The Milky Way Saves the Day

Gary Hart Photography: Yosemite Night, Half Dome and Milky Way from Olmsted Point

Yosemite Night, Half Dome and Milky Way from Olmsted Point
Sony a7SII
Sony 24mm f/1.4 GM
20 seconds
F/1.6
ISO 3200

I’m a one-click photographer (no composites or blending), so all of my Milky Way images were captured in a single frame.

I stress a lot before and during a photo workshop. A lot more than people know, and a lot more than I probably should. Some of that stress probably helps me ensure things go smoothly, but some things are just plain irrational because people know I don’t have any control over things like the weather, dogwood bloom, the northern lights, to name just a few of Nature’s fickle whims. But I stress nevertheless.

For example, I schedule my Yosemite Fall Color photo workshop for the best chance to catch peak color. But when you schedule an autumn trip, there’s no guarantee of nailing the color’s peak (I also learned that there’s no guarantee that your hotel will have power, but that’s another story). My ace-in-the-hole for dealing with Yosemite unknowns like this is that even on a “bad” day, it’s still Yosemite. I also remind myself that Yosemite is blessed with a wide variety of deciduous trees to stretch the fall color season, and the low and slow Merced River means ubiquitous mirror reflections. But still, I stress.

I’ve found that the key to minimizing my stress is having options to fall back on when Plan A doesn’t materialize, something that will make the workshop memorable even when things aren’t exactly what we’d hoped for. Which is why, when possible, I try to schedule my workshops around astrophotography options. That way, when I don’t get clouds (which are always preferred over blank blue skies), the conditions are good for astrophotography. But I can’t schedule my fall workshops around the night sky because peak color trumps everything—I just have to take the moon and Milky Way in whatever state I find it. More stress.

This year’s Yosemite autumn workshop got the color and reflections I’d hoped for, but not one cloud in four days. Not only that, a power outage meant no lights, heat, hot water, or WiFi in our hotel for the first two days. The group knew the power outage wasn’t my fault, but that’s not really my idea of how to make a workshop memorable. So I started to look for options.

While I hadn’t planned this workshop around astrophotography, when it started to become clear that no clouds were in our future, I started looking for night sky options. And as luck would have it and through no planning on my part, this workshop straddled the new moon, which meant a possible crescent at sunrise or sunset. Unfortunately, neither the sunrise or sunset crescent aligns with any of Yosemite’s nice views in autumn. Of course another nice thing about a new moon is dark skies, ideal for night and (especially) Milky Way photography. Hmmm….

But trying to photograph the Milky Way posed another problem. In autumn, the Milky Way’s brilliant core glows above the southwest horizon after sunset, then disappears for the night before midnight. And unfortunately, nearly all of Yosemite’s best views face east. The one exception is Olmsted Point, a southwest-facing view of Half Dome on the Tioga road near Tenaya Lake and Tuolumne Meadows. (This was no great discovery—people have been photographing the Milky Way from Olmsted Point for awhile.) Though I’d never done it, the Milky Way from Olmsted Point has been on my to-do list for a long time, but I’ve always resisted taking a group up there because it’s about a 2 1/2 hour roundtrip from our hotel. And at 8000 feet, at the end of October, Olmsted Point is quite chilly after dark.

When I pitched the Milky Way idea to the group, everyone was all for it (the option was to return to a hotel without lights, heat, hot water, or WiFi). Before leaving I gave the group some Milky Way photography training, made sure they had equipment that would work (sturdy tripod, fast and wide lens), and (especially) reminded them to bring their warmest clothing (including a hat and gloves). As a bonus, to break up the drive we made a 30-minute stop at Siesta Lake for some nice color and reflections. Even with that stop, we made it up to Olmsted Point about an hour before sunset.

Olmsted Point is a granite dome with great views of Half Dome’s face from the opposite side viewed from Yosemite Valley. In addition to having some of my favorite foreground options for Half Dome, it’s a great spot to get up close and personal with evidence of Yosemite’s glacial past. Most obvious are the glacial erratics, large (some car-size and larger) boulders carried by glaciers and deposited in place as the glaciers retreated. But you don’t have to look hard to spot other signs of glaciation, like glacial polish (granite with glassy smooth and reflective finish), and glacial striations (grooves scoured in the granite by rocks embedded in the moving ice sheets).

For the sunset shoot we made the five minute walk out to the point itself, but I brought everyone back to the vista at the parking lot for the Milky Way shoot because I didn’t want anyone to get hurt scrambling down in the dark. After dark the temperatures dropped and the wind picked up, so some of the group opted for the warmth of the cars, but the rest of us set up our tripods and cameras, picked our compositions, and focused before it got too dark. Then we waited.

The only restaurant option closed at 9 p.m., which gave us only about 45 minutes of quality Milky Way time before we had to head back down the mountain to avoid missing dinner, but that turned out to be just about right—everyone who stayed out to shoot got nice stuff, and no one froze. I hadn’t been sure that adding this unplanned Milky Way shoot was the right thing to do, but on the drive back I breathed a private sign of relief because the trip had gone even better than I’d hoped. My stress lifted completely when we pulled into the hotel parking lot to find the lights on.


To help you understand and photograph the Milky Way, here’s the Milky Way article from my Photo Tips section

Photograph the Milky Way

Gary Hart Photography: Bristlecone Night, Milky Way from the White Mountains, California

Bristlecone Night, Milky Way from the White Mountains, California

Look heavenward on a moonless summer night (in the Northern Hemisphere) far from city light. The first thing to strike you is the shear volume of stars, but as your eyes adjust, your gaze is drawn to a luminous band spanning the sky. Ranging from magnificently brilliant to faintly visible, this is the Milky Way, home to our sun and nearly a half trillion other stars of varying age, size, and temperature.

Size and shape

Though every star you’ve ever seen is part of our Milky Way galaxy, stargazers use the Milky Way label more specifically to identify this river of starlight, gas, and dust spanning the night sky. As you feast your eyes, appreciate that some of the Milky Way’s starlight has traveled 25,000 years to reach your eyes, and light from a star on one edge of the Milky Way would take 100,000 years to reach the other side.

Spiral Galaxy (Milky look-alike): This is what our galaxy would look like from above.

Milky Way look-alike spiral galaxy: This is what our galaxy would look like from the outside, looking in. (The individual stars visible here are “local” and not part of the spiral galaxy depicted here.) Earth would be between two of the spiral arms, about halfway out from the center.

The rest of the sky appears to be filled with far more discrete stars than the region containing the Milky Way, but don’t let this deceive you. Imagine that you’re out in the countryside where the lights of a distant city blend into a homogeneous glow—similarly, the stars in the Milky Way’s luminous band are simply too numerous and distant to resolve individually. On the other hand, the individual pinpoints of starlight that we name and mentally assemble into constellations are just closer, much like the lights of nearby farmhouses. And the dark patches in the Milky Way aren’t empty space—like the trees and mountains that block our view of the city, they’re starlight-blocking interstellar dust and gas, remnants of exploded stars and the stuff of future stars.

Just as it’s impossible to know what your house looks like by peering out a window, it’s impossible to know what the Milky Way looks like by simply looking up on a dark night. Fortunate for us, really smart people have been able to infer from painstaking observation, measurement, reconstruction, and comparison with other galaxies that our Milky Way is flat (much wider than it is tall) and spiral shaped, like a glowing pinwheel, with two major arms and several minor arms spiraling out from its center. Our solar system is in one of the Milky Way’s minor arms, a little past midway between the center and outer edge.

Blinded by the light

Sadly, artificial light and atmospheric pollution have erased the view of the Milky Way for nearly a third of the world’s population, and eighty percent of Americans. Worse still, even though some part of the Milky Way is overhead on every clear night, many people have never seen it.

Advances in digital technology have spurred a night photography renaissance that has enabled the Milky Way challenged to enjoy images of its splendor from the comfort of their recliner, but there’s nothing quite like viewing it in person. With just a little knowledge and effort, you too can enjoy the Milky Way firsthand; add the right equipment and a little more knowledge, and you’ll be able to photograph it as well.

Horizon to Horizon

Understanding that our Solar System is inside the Milky Way’s disk makes it easier to understand why we can see some portion of the Milky Way on any night (assuming the sky is dark enough). In fact, from our perspective, the plane of the Milky Way forms a complete ring around Earth (but of course we can only see half the sky at any given time), with its brightness varying depending on whether we’re looking toward our galaxy’s dense center or sparse outer region.

Where the action is

Milky Way and Halemaʻumaʻu Crater, Kilauea, Hawaii

The Milky Way’s brilliant center, its “galactic core,” radiates above Kilauea on Hawaii’s Big Island

Though the plane of the Milky Way stretches all the way across our sky, when photographers talk about photographing the Milky Way, they usually mean the galactic core—the Milky Way’s center and most densely packed, brightest region. Unfortunately, our night sky doesn’t always face the galactic core, and there are many months when this bright region is not visible at all.

To understand the Milky Way’s visibility in our night sky, it helps to remember that Earth both rotates on its axis (a day), and revolves around the sun (a year). When the side of the planet we’re on rotates away from the sun each day, the night sky we see is determined by our position on our annual trip around the sun—when Earth is between the sun and the galactic core, we’re in position to see the most brilliant part of the Milky Way; in the months when the sun is between earth and the galactic core, the bright part of the Milky Way can’t be seen.

Put in terrestrial terms, imagine you’re at the neighborhood playground, riding a merry-go-round beneath a towering oak tree. You face outward, with your back to the merry-go-round’s center post. As the merry-go-round spins, your view changes—about half of the time you’d rotate to face the oak’s trunk, and about half the time your back is to the tree. Our solar system is like that merry-go-round: the center post is the sun, the Milky Way is the tree, and in the year it takes our celestial merry-go-round to make a complete circle, we’ll face the Milky Way about half the time.

Finding the Milky Way

Just like every other celestial object outside our solar system, the Milky Way’s position in our sky changes with the season and time of night you view it, but it remains constant relative to the other stars and constellations. This means you can find the Milky Way by simply locating any of the constellations in the galactic plane. Here’s an alphabetical list of the constellations* through which the Milky Way passes (with brief notes by a few of the more notable constellations):

  • Aquila
  • Ara
  • Auriga—faintest
  • Canis Major—faint
  • Carina
  • Cassiopeia—faint; its easily recognized “w” (or “m”) shape makes Cassiopeia a good landmark for locating the Milky Way in the northern sky
  • Cepheus
  • Circinus
  • Crux
  • Cygnus—bright
  • Gemini
  • Lacerta
  • Lupus
  • Monoceros
  • Musca
  • Norma
  • Ophiuchus
  • Orion—faint; another easy to recognize constellation that’s good for finding the galactic plane
  • Perseus—faint
  • Puppis
  • Pyxis
  • Sagitta
  • Sagittarius—brightest, galactic core
  • Scorpius—bright
  • Scutum
  • Serpens
  • Taurus—faint
  • Triangulum
  • Vela
  • Vulpecula
* Constellations are comprised of stars that only appear connected by virtue of our Earth-bound perspective—a constellation is a direction in the sky, not a location in space.

If you can find any of these constellations, you’re looking in the direction of some part of the Milky Way (if you can’t see it, your sky isn’t dark enough). But most of us want to see the center of the Milky Way, where it’s brightest, most expansive, and most photogenic. The two most important things to understand about finding the Milky Way’s brilliant center are:

  • From our perspective here on Earth, the galactic core is in Sagittarius (and a couple of other constellations near Sagittarius)—when Sagittarius is visible, so is the brightest part of the Milky Way (assuming you can find a dark enough sky)
  • Earth’s night side most directly faces Sagittarius in the Northern Hemisphere’s summer months (plus part of spring and autumn)

Armed with this knowledge, locating the Milky Way’s core is as simple as opening one of my (too many) star apps to find out where Sagittarius is. Problem solved. Of course it helps to know that the months when the galactic core rises highest and is visible longest are June, July, and August, and to not even consider looking before mid-March, or after mid-October. If you can’t wait until summer and don’t mind missing a little sleep, starting in April, Northern Hemisphere residents with a dark enough sky can catch Sagittarius and the galactic core rising in the southeast shortly before sunrise. After its annual premier in April, the Milky Way’s core rises slightly earlier each night and is eventually well above the horizon by nightfall.

People who enjoy sleep prefer doing their Milky Way hunting in late summer and early autumn, when the galactic core has been above the horizon for most of the daylight hours, but remains high in the southwest sky as soon as the post-sunset sky darkens enough for the stars to appear. The farther into summer and autumn you get, the closer to setting beneath the western horizon the Milky Way will be at sunset, and the less time you’ll have before it disappears.

Into the darkness

The Milky Way is dim enough to be easily washed out by light pollution and moonlight, so the darker your sky, the more visible the Milky Way will be. To ensure sufficient darkness, I target moonless hours, from an hour or so after sunset to an hour before sunrise. New moon nights are easiest because the new moon rises and sets (more or less) with the sun and there’s no moon all night. But on any night, if you pick a time before the moon rises, or after it sets, you should be fine. Be aware that the closer the moon is to full, the greater the potential for its glow to leak into the scene from below the horizon.

Getting away from city lights can be surprisingly difficult (and frustrating). Taking a drive out into the countryside near home is better than nothing, and while it may seem dark enough to your eyes, a night exposure in an area that you expect to be dark enough reveals just how insidious light pollution is as soon as you realize all of your images are washed out by an unnatural glow on the horizon. Since the galactic core is in the southern sky in the Northern Hemisphere, you can mitigate urban glow in your Milky Way images by heading south of any nearby population area, putting the glow behind you as you face the Milky Way.

Better than a night drive out to the country, plan a trip to a location with a truly dark sky. For this, those in the less densely populated western US have an advantage. The best resource for finding world-class dark skies anywhere on Earth is the International Dark-Sky Association. More than just a resource, the IDA actively advocates for dark skies, so if the quality of our night skies matters to you, spend some time on their site, get involved, and share their website with others.

Photograph the Milky Way

 

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Viewing the Milky Way requires nothing more than a clear, dark sky. (Assuming clean, clear skies) the Milky Way’s luminosity is fixed, so our ability to see it is largely a function of the darkness of the surrounding sky—the darker the sky, the better the Milky Way stands out. But because our eyes can only take in a fixed amount of light, there’s a ceiling on our ability to view the Milky Way with the unaided eye.

A camera, on the other hand, can accumulate light for a virtually unlimited duration. This, combined with technological advances that continue increasing the light sensitivity of digital sensors, means that when it comes to photographing the Milky Way, well…, the sky’s the limit. As glorious as it is to view the Milky Way with the unaided eye, a camera will show you detail and color your eyes can’t see.

Knowing when and where to view the Milky Way is a great start, but photographing the Milky Way requires a combination of equipment, skill, and experience that doesn’t just happen overnight (so to speak). But Milky Way photography doesn’t need to break the bank, and it’s not rocket science.

Equipment

Bottom line, photographing the Milky Way is all about maximizing your ability to collect light: long exposures, fast lenses, high ISO.

Camera

In general, the larger your camera’s sensor and photosites (the “pixels” that capture the light), the more efficiently it collects light. Because other technology is involved, there’s not an absolute correlation between sensor and pixel size and light gathering capability, but a small, densely packed sensor almost certainly rules out your smartphone and point-and-shoot cameras for anything more than a fuzzy snap of the Milky Way. At the very least you’ll want a mirrorless or DSLR camera with an APS-C (1.5/1.6 crop) size sensor. Better still is a full frame mirrorless or DSLR camera. (A 4/3 Olympus or Panasonic sensor might work, but as great as these cameras are for some things, high ISO photography isn’t their strength.

Another general rule is that the newer the technology, the better it will perform in low light. Even with their smaller, more densely packed sensors, many of today’s top APS-C bodies outperform in low light full frame bodies that have been out for a few years, so full frame or APS-C, if your camera is relatively new, it will probably do the job.

If you’re shopping for a new camera and think night photography might be in your future, compare your potential cameras’ high ISO capabilities—not their maximum ISO. Read reviews by credible sources like DP Review, Imaging Resource, or DxOMark (among many others) to see how your camera candidates fare in objective tests.

An often overlooked consideration is the camera’s ability to focus in extreme low light. Autofocusing on the stars or landscape will be difficult to impossible, and you’ll not be able to see well enough through a DSLR’s viewfinder to manually focus. Some bodies with a fast lens might autofocus on a bright star or planet, but it’s not something I’d count on (though I expect within a few years before this capability will become more common).

Having photographed for years with Sony and Canon, and working extensively with most other mirrorless and DSLR bodies in my workshops, I have lots of experience with cameras from many manufacturers. In my book, focus peaking makes mirrorless the clear winner for night focusing. Sony’s current mirrorless bodies (a7RII/RIII, a7S/SII) are by far the easiest I’ve ever used for focusing in the dark—what took a minute or more with my Canon, I can do in seconds using focus peaking with my Sony bodies (especially the S bodies). I use the Sony a7SII, but when I don’t want to travel with a body I only use for night photography, the Sony a7RIII does the job too. Of the major DSLR brands, I’ve found Canon’s superior LCD screen (as of 2019) makes it much easier to focus in extreme low light than Nikon. (More on focus later.)

Lens

Put simply, to photograph the Milky Way you want fast, wide glass—the faster the better. Fast to capture as much light as possible; wide to take in lots of sky. A faster lens also makes focus and composition easier because the larger aperture gathers more light. How fast? F/2.8 or faster—preferably faster. How wide? At least 28mm, and wider is better still. I do enough night photography that I have a dedicated, night-only lens—my original night lens was a Canon-mount Zeiss 28mm f/2; my current night lens is the Sony 24mm f/1.4.

Tripod

It goes without saying that at exposure times up to 30 seconds, you’ll need a sturdy tripod and head for Milky Way photography. You don’t need to spend a fortune, but the more you spend, the happier you’ll be in the long run (trust me). Carbon fiber provides the best combination of strength, vibration reduction, and light weight, but a sturdy (albeit heavy) aluminum tripod will do the job.

An extended centerpost is not terribly stable, and a non-extended centerpost limits your ability to spread the tripod’s legs and get low, so I avoid tripods with a centerpost. But if you have a sturdy tripod with a centerpost, don’t run out and purchase a new one—just don’t extend the centerpost when photographing at night.

Read my tips for purchasing a tripod here.

Other stuff

To eliminate the possibility of camera vibration I recommend a remote release; without a remote you’ll risk annoying all within earshot with your camera’s 2-second timer beep. You’ll want a flashlight or headlamp for the walk to and from the car, and your cell phone for light while shooting. And it’s never a bad idea to toss an extra battery in your pocket. And speaking of lights, never, never, NEVER use a red light for night photography (more on this later).

Getting the shot

Keep it simple

There are just so many things that can go wrong on a moonless night when there’s not enough light to see camera controls, the contents of your bag, and the tripod leg you’re about to trip over. After doing this for many years, both on my own and helping others in workshops, I’ve decided that simplicity is essential.

Simplicity starts with paring down to the absolute minimum camera gear: a sturdy tripod, one body, one lens, and a remote release (plus an extra battery in my pocket). Everything else stays at home, in the car, or if I’m staying out after a sunset shoot, in my bag.

Upon arrival at my night photography destination, I extract my tripod, camera, lens (don’t forget to remove the polarizer), and remote release. I connect the remote and mount my lens—if it’s a zoom I set the focal length at the lens’s widest—then set my exposure and focus (more on exposure and focus below). If I’m walking to my photo site, I carry the pre-exposed and focused camera on the tripod (I know this makes some people uncomfortable, but if you don’t trust your tripod head enough to hold onto your camera while you’re walking, it’s time for a new head), trying to keep the tripod as upright and stable as possible as I walk.

Flashlights/headlamps are essential for the walk/hike out to to and from my shooting location, but while I’m there and in shoot mode, it’s no flashlights, no exceptions. This is particularly important when I’m with a group. Not only does a flashlight inhibit your night vision, its light leaks into the frame of everyone who’s there. And while red lights may be better for your night vision and are great for telescope view, red light is especially insidious about leaking into everyone’s frame, so if you plan to take pictures, no red light! If you follow my no flashlight rule once the photography begins, you’ll be amazed at how well your eyes adjust. I can operate my camera’s controls in the dark—it’s not hard with a little practice, and well worth the effort to learn. If I ever do need to see my camera to adjust something, or if I need to see to move around, my cell phone screen (not the phone’s flashlight, just its illuminated screen) gives me all the light I need.

Composition

A good Milky Way image is distinguished from an ordinary Milky Way image by its foreground. Simply finding a location that’s dark enough to see the Milky Way is difficult enough; finding a dark location that also has a foreground worthy of pairing with the Milky Way usually takes a little planning.

Since the Milky Way’s center is in the southern sky (for Northern Hemisphere observers), I look for remote (away from light pollution) subjects that I can photograph while facing south (or southeast or southwest, depending on the month and time of night). Keep in mind that unless you have a ridiculous light gathering camera (like the Sony a7S or a7S II) and an extremely fast lens (f/2 or faster), your foreground will probably be more dark shape than detail. Water’s inherent reflectivity makes it a good foreground subject as well, especially if the water includes rocks or whitewater.

When I encounter a scene I deem photo worthy, not only do I try to determine its best light and moon rise/set possibilities, I also consider its potential as a Milky Way subject. Can I align it with the southern sky? Are there strong subjects that stand out against the sky? Is there water I can include in my frame?

I’ve found views of the Grand Canyon from the North Rim, the Kilauea Caldera, and the bristlecone pines in California’s White Mountains that work spectacularly. And its hard to beat the dark skies and breathtaking foreground possibilities at the bottom of the Grand Canyon. On the other hand, while Yosemite Valley has lots to love, you don’t see a lot of Milky Way images from Yosemite Valley because not only is there a lot of light pollution, and Yosemite’s towering, east/west trending granite walls give its south views an extremely high horizon that blocks much of the galactic core from the valley floor.

The last few years I’ve started photographing the Milky Way above the spectacular winter scenery of New Zealand’s South Island, where the skies are dark and the Milky Way is higher in the sky than it is in most of North America.

To maximize the amount of Milky Way in my frame, I generally (but not always) start with a vertical orientation that’s at least 2/3 sky. On the other hand, I do make sure to give myself more options with a few horizontal compositions as well. Given the near total darkness required of a Milky Way shoot, it’s often too dark to see well enough to compose that scene. If I can’t see well enough to compose I guess at a composition, take a short test exposure at an extreme (unusable) ISO to enable a relatively fast shutter speed (a few seconds), adjust the composition based on the image in the LCD, and repeat until I’m satisfied.

Focus

Needless to say, when it’s dark enough to view the Milky Way, there’s not enough light to autofocus (unless you have a rare camera/lens combo that can autofocus on a bright star and planet), or even to manually focus with confidence. And of all the things that can ruin a Milky Way image (not to mention an entire night), poor focus is number one. Not only is achieving focus difficult, it’s very easy to think you’re focused only to discover later that you just missed.

Because the Milky Way’s focus point is infinity, and you almost certainly won’t have enough light to stop down for more depth of field, your closest foreground subjects should be far enough away to be sharp when you’re wide open and focused at infinity. Before going out to shoot, find a hyperfocal app and plug in the values for your camera and lens at its widest aperture. Even though it’s technically possible to be sharp from half the hyperfocal distance to infinity, the kind of precise focus focusing on the hyperfocal point requires is difficult to impossible in the dark, so my rule of thumb is to make sure my closest subject is no closer than the hyperfocal distance.

For example, I know with my Sony 24mm f/1.4 wide open on my full frame Sony a7SII, the hyperfocal distance is about 50 feet. If I have a subject that’s closer (such as a bristlecone pine), I’ll pre-focus (before dark) on the hyperfocal distance, or shine a bright light on an object at the hyperfocal distance and focus there, but generally I make sure everything is at least 50 feet away. Read more about hyperfocal focus in my Depth of Field article.

By far the number one cause of night focus misses is the idea that you can just dial any lens to infinity; followed closely by the idea that focused at one focal length means focused at all focal lengths. Because when it comes to sharpness, almost isn’t good enough, if you have a zoom lens, don’t even think of trying to dial the focus ring to the end for infinity. And even for most prime lenses, the infinity point is a little short of all the way to the end, and can vary slightly with the temperature and f-stop. Of course if you know your lens well enough to be certain of its infinity point by feel (and are a risk taker), go for it. And that zoom lens that claims to be parfocal? While it’s possible that your zoom will hold focus throughout its entire focal range, regardless of what the manufacturer claims, I wouldn’t bet an entire shoot on it without testing first.

All this means that the only way to ensure night photography sharpness is to focus carefully on something before shooting, refocus every time your focal length changes, and check focus frequently by displaying and magnifying an image on your LCD. To simplify (there’s that word again), when using a zoom lens, I usually set the lens at its widest focal length, focus, verify sharpness, and (once I know I’m focused) never change the focal length again.

While the best way to ensure focus is to set your focal length and focus before it gets dark, sometimes pre-focusing isn’t possible, or for some reason you need to refocus after darkness falls. If I arrive at my destination in the dark, I autofocus on my headlights, a bright flashlight, or a laser 50 feet or more away. And again, never assume you’re sharp by looking at the image that pops up on the LCD when the exposure completes—always magnify your image and check it after you focus.

For more on focusing in the dark, including how to use stars to focus, read my Starlight Photo Tips article.

Exposure

Exposing a Milky Way image is wonderfully simple once you realize that you don’t have to meter—because you can’t (not enough light). Your goal is simply to capture as many photons as you can without damaging the image with noise, star motion, and lens flaws.

Basically, with today’s technology you can’t give a Milky Way image too much light—you’ll run into image quality problems before you overexpose a Milky Way image. In other words, capturing the amount of light required to overexpose a Milky Way image is only possible if you’ve chosen an ISO and/or shutter speed that significantly compromises the quality of the image with excessive noise and/or star motion.

In a perfect world, I’d take every image at ISO 100 and f/8—the best ISO and f-stop for my camera and lens. But that’s not possible when photographing in near total darkness—a usable Milky Way image requires exposure compromises. What kind of compromises? The key to getting a properly exposed Milky Way image is knowing how far you push your camera’s exposure settings before the light gained isn’t worth the diminished quality. Each exposure variable causes a different problem when pushed too far:

  • ISO: Raising ISO to increase light sensitivity comes with a corresponding increase in noise that muddies detail. The noise at any particular ISO varies greatly with the camera, so it’s essential to know your camera’s low-light capability(!). Some of the noise can be cleaned up with noise reduction software (I use Topaz DeNoise 6)—the amount that cleans up will depend on the noise reduction software you use, your skill using that software, and where the noise is (is it marring empty voids or spoiling essential detail?).
  • Shutter speed: The longer the shutter stays open, the more motion blur spreads the stars’ distinct pinpoints into streaks. I’m not a big fan of formulas that dictate star photography shutter speeds because I find them arbitrary and inflexible, and they fail to account for the fact that the amount of apparent stellar motion varies with the direction you’re composing (you’ll get less motion the closer to the north or south poles you’re aimed). My general shutter-speed rule of thumb is 30-seconds or less, preferably less—I won’t exceed 30 seconds, and do everything I can to get enough light with a faster shutter speed.
  • F-stop: At their widest apertures, lenses tend to lose sharpness (especially on the edges) and display optical flaws like comatic aberration (also called coma) that distorts points of light (like stars) into comet shaped blurs. For many lenses, stopping down even one stop from wide open significantly improves image quality.

Again: My approach to metering for the Milky Way is to give my scene as much light as I can without pushing the exposure compromises to a point I can’t live with. Where exactly is that point? Not only does that question require a subjective answer that varies with each camera body, lens, and scene, as technology improves, I’m less forgiving of exposure compromises than I once was. For example, when I started photographing the Milky Way with my Canon 1DS Mark III, the Milky Way scenes I could shoot were limited because my fastest wide lens was f/4 and I got too much noise when I pushed my ISO beyond 1600. This forced me compromise by shooting wide open with a 30-second shutter speed to achieve even marginal results. In fact, given these limitations, despite trying to photograph the Milky Way from many locations, when I started the only Milky Way foreground that worked well enough was Kilauea Caldera, because it was its own light source (an erupting volcano).

Today (mid-2019) I photograph the Milky Way with a Sony a7S II and a Sony 24mm f/1.4 lens. I get much cleaner images from my Sony at ISO 6400 than got a ISO 1600 on my Canon 1DSIII, and the night light gathering capability of an f/1.4 lens revelatory. At ISO 6400 (or higher) I can stop down slightly to eliminate lens aberrations (though I don’t seem to need to with the Sony lens), drop my shutter speed to 20 or 15 seconds to reduce star motion 33-50 percent, and still get usable foreground detail by starlight.

I can’t emphasize enough how important it is to know your camera’s and lens’s capabilities in low light, and how for you’re comfortable pushing the ISO and f-stop. For each of the night photography equipment combos I’ve used, I’ve established a general exposure upper threshold, rule-of-thumb compromise points for each exposure setting that I won’t exceed until I’ve reached the compromise threshold of the other exposure settings. For example, with my Sony a7SII/24mm f/1.4 combo, I usually start at ISO 6400, f/1.4, and 20 seconds. Those settings will usually get me enough light for Milky Way color and pretty good foreground detail. But if I want more light (for example, if I’m shooting into the black pit of the Grand Canyon from the canyon rim), my first exposure compromise might be to increase to ISO 12800; if I decide I need even more light, my next compromise is to bump my shutter speed to 30 seconds. Or if I want a wider field of view than 24mm, I’ll put on my Sony 16-35 f/2.8 G lens and increase to ISO 12800 and 30 seconds.

These thresholds are guidelines rather than hard-and-fast rules, and they apply to my preferences only—your results may vary. And though I’m pretty secure with this workflow, for each Milky Way composition I try a variety of exposure combinations before moving to another composition. Not only does this give me a range of options to choose between when I’m at home and reviewing my images on a big monitor, it also gives me more insight into my camera/lens capabilities, allowing me to refine my exposure compromise threshold points.

One other option that I’ve started applying automatically is long exposure noise reduction, which delivers a noticeable reduction in noise for exposures that are several seconds and longer.

* In normal situations the Sony a7SII can handle ISO 12,800 without even breathing hard, but the long exposure time required of night photography generates a lot of heat on the sensor with a corresponding increase in noise.

It’s time to click that shutter

You’re in position with the right gear, composed, focused, and exposure values set. Before you actually click the shutter, let me remind you of a couple of things you can do to ensure the best results: First, lower that center post. A tripod center post’s inherent instability is magnified during long exposures, not just by wind, but even by nearby footsteps, the press of the shutter button, and slap of the mirror (and sometimes it seems, by ghosts). And speaking of shutter clicks, you should be using a remote cable or two-second timer to eliminate the vibration imparted when your finger presses the shutter button.

When that first Milky Way image pops up on the LCD, it’s pretty exciting. So exciting in fact that sometimes you risk being lulled into a “Wow, this isn’t as hard as I expected” complacency. Even though you think everything’s perfect, don’t forget to review your image sharpness every few frames by displaying and magnifying and image on your LCD. In theory nothing should change unless you changed it, but in practice I’ve noticed an occasional inclination for focus to shift mysteriously between shots. Whether it’s slight temperature changes or an inadvertent nudge of the focus ring as you fumble with controls in the dark, you can file periodically checking your sharpness falls under “an ounce of prevention….” Believe me, this will save a lot of angst later.

And finally, don’t forget to play with different exposure settings for each composition. Not only does this give you more options, it also gives you more insight into your camera/lens combo’s low light capabilities.

The bottom line

Though having top-of-the-line, low-light equipment helps a lot, it’s not essential. If you have a full frame mirrorless or DSLR camera that’s less than five years old, and a lens that’s f/2.8 or faster, you probably have all the equipment you need to get great the Milky Way images. Even with a cropped sensor, or an f/4 lens, you have a good chance of getting usable Milky Way images in the right circumstances. If you’ve never photographed the Milky Way before, don’t expect perfection the first time out. What you can expect is improvement each time you go out as you learn the limitations of your equipment and identify your own exposure compromise thresholds. And success or failure, at the very least you’ll have spent a magnificent night under the stars.

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A Milky Way Gallery

Click an image for a closer look and slide show. Refresh the window to reorder the display.

 

Starry Night

Gary Hart Photography: Starry Night, Lake Wanaka, New Zealand

Starry Night, Lake Wanaka, New Zealand
Sony a7SII
Sony 16-35 f/2.8 GM
35mm
30 seconds
F/2.8
ISO 6400

It’s midnight and I’m right back where my day had started 21 hours earlier. Standing in the frigid dark beside Lake Wanaka, I feel equal parts energized and exhausted by the longest photography day of my life. And for the first time all day, I’m alone.

With the moon’s arrival still a couple of hours away, most of my attention is on aligning the Milky Way with the much photographed Wanaka willow tree. But photographing the Milky Way with the tree also put the glow of the Wanaka’s lights directly in my field of view. As someone who always strives to photograph the natural world untouched by humans, this would have been a deal-breaker for the old me. But what the heck—the reflection is crisp, the light’s amber glow illuminating the fog is kind of pretty, and since I’m already out here….

Once I embrace the moment, I’m free to click and enjoy. For most of this night the fog ebbed and flowed in the distance, adding character to the scene without subtracting too many stars. I’m having a blast, city lights or not. But eventually the fog starts to take over, slowly expanding upward until it completely swallows most of the Milky Way. Bedtime….

But just as I decide to pack it in, the fog pulls back and the stars briefly rally. Much of the Milky Way is still obscured, but the sky in the west has opened and I quickly reposition, pointing my camera away from the fog, city, and Milky Way, and toward the dark, pristine sky. As my exposure begins, long, undulating ripples stir the lake surface that had been still all night, and I’m concerned that I’ll loose my reflection. Instead, the long exposure smooths the ripples and stretches the brightest stars into oblong balls of light.

Below is a rewrite of the Starlight Photography article in my Photo Tips section



Starlight Photography

With pretty much any mirrorless or DSLR camera, a sturdy tripod, fast lens, and just little knowledge, you can now capture landscapes beneath more stars than you ever imagined possible. A camera’s ability to accumulate light allows it to reveal stars far fainter than the naked eye sees; rapidly advancing digital SLR technology now enables usable (low noise) images at the extreme ISOs necessary for star-freezing shutter speeds in very low light.

Before you start

I’m starting with the assumption that you have a relatively new mirrorless camera or digital SLR, one that allows you to capture fairly clean (low noise) images at 3200 ISO or higher. You’ll need to be fairly comfortable with managing the controls in the dark, and know how to get it into manual and bulb modes. For star trails a locking remote release is essential (one that allows you to lock down the shutter rather than forcing you to hold it down for the duration of the exposure).

And of course don’t even think about trying any of this without a rock-solid tripod (you don’t need to spend tons of money, but neither can you assume any tripod will work). A wide (28mm or wider on full frame is best), fast (at least f/2.8, but the faster the better) lens is best. Oh yeah, and take off your polarizer.

Test frame

Moonlight photography is great for photographing landscapes beneath a few bright stars, but a sky filled with stars (and maybe even the Milky Way) can only happen when there’s no moon and city light washing out the faint stars.

Gary Hart Photography: Milky Way Reflection, Colorado River, Grand Canyon

Milky Way Reflection, Colorado River, Grand Canyon

When I go out on a moonless night, whether my goal is pinpoint stars, star trails, or both, I start with a test frame to determine the amount of light my planned image requires. The test frame also allows me to check my exposure, focus, level, and composition in light that’s nearly opaque to my eyes.

My initial test frame is usually no more than a 30-second, high ISO (the goal isn’t a usable image, it’s solely to determine exposure, focus, and composition) and my lens’s widest aperture. After each click I check my composition and focus, adjust, and reshoot. The first frame is mostly to gauge the light; subsequent frames refine both the exposure and composition. I’m usually ready to go after two or three test frames.

Once I have an exposure that works (the desired combination of stars and foreground light), I just need to decide which shutter speed will give me the star effect I want—short for pinpoint stars, long for star trails. With that, finding the ISO and/or f-stop that adds or subtracts the light subtracted or added by my chosen shutter speed is just simple math.

For example, let’s say my test exposure was perfect at ISO 12,800, f/2.8, and 30 seconds. A 30-minute star trail image will gather a lot more light (than my 30-second test exposure), so I start by figuring out how many stops 30 minutes adds to 15 seconds. Since I have to double ¼ minute (15 seconds) seven times to get to 32 minutes, I know going from 15 seconds to 32 minutes adds 7 stops of light. (2×1/4=1/2 minute -> 2×1/2=1  -> 2×1=2 -> 2×2=4 -> 2×4=8 -> 2×8=16 -> 2×16=32.)

Finding focus

A moonless night doesn’t have enough light to see the controls on your camera, the contents of your bag, and the tripod leg you’re about to kick. Needless to say, there’s not enough light to focus either, at least in the traditional ways.

Because we’re usually wide, and very rarely concerned about close detail, all of our night subjects are probably at least 25 feet away with an infinity focus point. Unfortunately, that old prime lens habit of twisting the focus ring to the end for infinity focus doesn’t work on a zoom lens—every focal length has a different focus point (I’ve found this to be true even for lenses labeled parfocal). While I’ve simplified my night photography by usually going with my Sony 24mm f/ 1.4 GM lens, when I do use a zoom (usually my Sony 16-35 f/2.8 GM), I almost always use it at its widest focal length. Not only does a wide lens maximize the amount of sky in my frame, the extra depth of field increases my range of focus tolerance. And sticking with a single focal length reduces the times I need to mess with focus—once I get it sharp, I’m done with the focus hassle.

Despite the hardships, there are a number of methods for focusing at infinity in the dark. Here they are in my order of preference:

1.    Autofocus on a bright planet or star. Some camera/lens combinations have excellent autofocus (the faster the lens, the better). I always start by picking out the brightest planet/star. Venus is great, but it won’t be up during the darkest hours of the night. Jupiter, Saturn, and Mars can work, as can Sirius and maybe a few other bright stars. Regardless, you don’t need to know what you’re pointing at—find something bright in the sky, center it in your viewfinder, and try to autofocus. (Any bright, distant object will do—headlights, a plane overhead, whatever.) Don’t forget to take your lens out of autofocus as soon as it’s focused.

2.    Live-view focus on a bright planet or star. With my camera on my tripod I center the brightest object in the sky in my viewfinder and lock it in place. I go into live-view mode, center the star/planet in the LV magnification square, then magnify the view to the maximum (it’s 10x on my Canon), and manually focus. Since switching to Sony mirrorless, this is my preferred focus technique and I rarely try 1 or 3.

3.    Autofocus on a nearby flashlight. When all else fails, I have somebody stand 50 feet or so away with a flashlight and autofocus on that. If I’m by myself, I rest the flashlight on a rock (or whatever) and walk (stumble?, grope?) 50 feet away. Believe it or not, if I focus my 24mm f/1.4 lens (for example), on a point 50 feet away, I’ll be sharp from about 25 feet to infinity, so you should be fine too unless your lens is significantly longer (which I don’t recommend for night photography) or faster (lucky you).  Don’t forget to take your lens out of autofocus as soon as it’s focused.

Don’t forget!: Because there’s no fixed infinity on a zoom lens, if you change your focal length, you must refocus. And no matter what method you choose to focus, you must check the sharpness on the LCD before assuming it’s sharp (once you’ve verified sharpness, you don’t need to refocus or check sharpness again until you change your focal length).

Composition

Gary Hart Photography: Moonlight and Milky Way, Lake Wakatipu, New Zealand

Moonlight and Milky Way, Lake Wakatipu, New Zealand

Because I love stars, and it’s the stars that really set a night image apart, most of my night images are at least 2/3 sky. The foreground is usually more of a placeholder, an excuse to dazzle you with the celestial ceiling. But that does not mean the foreground doesn’t matter. Quite the contrary, because the sky is a relative constant, the foreground is the difference between another pretty picture and something that pulls people to a print from across the room.

It’s not necessary, but when possible I always try to include something recognizable, such as the Milky Way (my favorite), or a recognizable constellation like the Big Dipper, Orion, or Cassiopeia. This is especially nice in pinpoint star images. If you don’t know the night sky, spend a little time familiarizing yourself with the major constellations—there are many, many smartphone apps to help with this.

Most people’s vision subconsciously runs along the long edge of an image. Since the primary feature or a night image is the sky, most of my night images are oriented vertically. Regardless of my orientation preference for a particular night shoot, I always make sure I have at least one vertical and horizontally oriented image.

I’m constantly on the lookout for a striking foreground to feature beneath a starry sky. Bold objects without a lot of intricate detail work well, such as a prominent or mountain. Reflective subjects, like water, granite, and sand, work well too.

In Yosemite I like Half Dome for the way it stands out against the sky. For years I struggled getting enough light into the dark hole of the Grand Canyon at night, but today’s digital sensors and fast lenses have changed that. had better luck with Grand Canyon my star trail images because the long shutter time allows enough light at a very clean ISO. My current favorite location for night photography is New Zealand, which I always visit in June (winter). The skies are dark and clear, the nights are long (the Milky Way is up all night in June), and the foregrounds are off the charts

Star motion

Successful star photography is all about managing star motion—either minimizing their motion or maximizing it. Unfortunately there’s an inverse relationship between the number of stars you capture and your ability to freeze their motion—for any given ISO and f-stop, the longer your shutter is open, the more stars you’ll expose, but the more they’ll move during your exposure.

Pinpoint stars

Pinpoint star images require (relatively) fast shutter speeds to (more or less) freeze the stars’ motion; star trail images us long shutter speeds (either in one frame, or a series of blended frames), the longer the better, to maximize star motion. (Of course it’s not the stars’ motion we’re capturing, it’s Earth’s rotation against a fixed backdrop of stars, but you already knew that.)

Gary Hart Photography: Dark Sky Dreams, Lake Matheson, New Zealand

Dark Sky Dreams, Lake Matheson, New Zealand

Some nights I shoot both pinpoint stars and star trails; other nights I only photograph pinpoint stars. Because a pinpoint star exposure is usually only 15 to 30 seconds, even after I’ve completed my test exposures, they’re the best way to make sure I have everything right before moving on to the quite lengthy star trail exposures.

I’ve seen a formula floating around that’s supposed to ensure pinpoint stars. It’s called the “Rule of 600” (or 500) and says: “Divide 600 by your focal length to ensure a shutter speed that will freeze the stars.” My concern with solutions like this is that they sound far more precise than they are, and they create a false sense of security, often leading to longer or shorter exposures than the scene calls for.

The problem is, the amount of motion is a function of (among other things) a star’s distance from the axis of rotation. For example the North Star, which is less than a degree from Earth’s north axis, will show very little motion in exposures of many minutes or even hours; Betelgeuse, on the other hand, because it’s near the celestial equator will show a significant amount of motion in just a few minutes. For pinpoint stars I think it’s more important to find an exposure that delivers enough light with the least amount of noise.

My biggest problem with exposure speed rules like this is that they can create a worse problem than they correct. Night photography is all about compromise—less than ideal aperture, ISO, and shutter speeds. To me the most unrecoverable compromise, the thing that will render an image unusable more than anything, is too much noise. I generally will forgive the slight amount of star motion of a 30-second exposure (that’s not usually even visible at standard viewing distance) if it saves me from a too dark foreground or unsatisfactory ISO. I find that I’m satisfied with my results if I keep my shutter speeds to 30-seconds and below—the faster the lens, the more likely I am to drop my shutter speed into the 10-20 second range.

I currently (as of September 2019) shoot with a Sony a7SII and Sony 24mm f/1.4 GM lens. I know I can get usable images that clean up nicely with noise reduction software (DxO Prime and/or Topaz DeNoise is my choice) at 12800 ISO, which allows me to stop down to f/2.0 and/or use a 10-second shutter speed. ISO 12800 is higher than I’d use with most cameras, but it seems today’s full frame (and even some APS-C) sensors do fine at ISO 3200, which might require a 30-second shutter speed to get enough light for the foreground.

The Milky Way

Spiral Galaxy (Milky look-alike): This is what our galaxy would look like from above.

Spiral Galaxy (Milky Way look-alike): This is what our galaxy would look like from above. The individual stars are nearby neighbors who just got in the way—they’re not part of the galaxy pictured. (Photo courtesy of European Southern Observatory)

The Milky Way may just be the single most beautiful everyday feature of Earth’s night sky. Sadly, increased light pollution has made it all but unknown to the vast majority of us. Once upon a time observing the Milky Way’s glowing band stretching across the sky was for most people a matter of walking out and looking up on a dark, clear night; seeing it now usually requires planning and travel.

As most know, the Milky Way is the galaxy of which our Solar System is a very insignificant piece (the Sun is one star in nearly a half trillion). When you see the Milky Way, you’re looking toward our galaxy’s center and seeing the accumulated light of billions of stars. The dark areas you see aren’t areas without stars, they’re regions of interstellar dust so dense that it obscures all starlight (the occasional pinpoint of starlight in these dark regions are nearby stars between us and the galactic center).

Earth’s position in one of the Milky Way’s spiral arms is kind of like being in the distant suburbs of a large city. While all the discrete stars we view and imagine into constellations are the porch lights of our neighbors (technically they’re part of the Milky Way too, just as some cities have city limits that extend all the way out to the suburbs), when we view the Milky Way we’re looking beyond our neighborhood toward our galaxy’s distant, much more densely populated, urban skyline. Due to our Solar System’s skewed orientation (we don’t orbit the Sun on the same plane on which the Milky Way is laid out), parts of the Milky Way are visible regardless of the side of the Sun Earth is on.

The constellations the Milky Way “passes through” (from our perspective—in reality we’re looking through these constellations to the Milky Way center beyond) include Perseus, Cassiopeia, Lacerta, Cygnus, Aquila, Sagittarius, Ophiuchus and Scorpius, Norma, Circinus, Crux, and Carina. If you want to see it, simply pick one of these constellations, figure out when and where it will be visible (an star chart or app will do), pick a clear, moonless night, and position yourself a location

Gary Hart Photography: Milky Way and Jupiter, Tasman Lake, New Zealand

Milky Way and Jupiter, Tasman Lake, New Zealand

far from city lights. For example, in the Northern Hemisphere Cassiopeia is visible year-round more or less opposite the Big Dipper with Polaris (the North Star) in the center—you might be able to go out tonight to see it (assuming there’s no moon and you can get away from city lights).

But the Milky Way isn’t particularly bright in Cassiopeia—for most photographers (or anyone else who appreciates beauty) it’s the Milky Way center we’re looking for. For that Northern Hemisphere viewers need to look to the southern sky, toward Sagittarius, the constellation that aligns most closely with the Milky Way’s dense (most brilliant) center. And since the Sun is in or near Sagittarius (when we look in the direction of Sagittarius, we’re also looking toward the sun) in winter, we need to wait until Earth has circled around to the other side of the sun—summer.

In other words, viewing (and photographing) the Milky Way’s bright center is a summer (-ish—late spring and early fall will work too) activity. Get out your star chart/app and find a summer night when the moon is below the horizon while Sagittarius is above it (the closer to a new moon, the better your odds). Then get yourself as far from city lights as you can (mountains or desert are great), look to the south, and prepare to be awestruck. Stand there and appreciate the view for a while—when you’re ready to photograph, follow the instructions for pinpoint stars above.

Read more about photographing the Milky Way

Star trails

Many people enjoy great success photographing star trails by combining many consecutive, relatively short exposures. In general this approach reduces noise and results in a cleaner image. But since all my images are captured in a single frame (I’m a film shooter with a digital camera), you’ll need to look elsewhere for guidance on that method.

Bristlecone Star Trails, White Mountains, California

My star trail images are usually 20-30 minute exposures, which I find to be more than adequate to achieve the motion effect I’m looking for. Start with pinpoint star frames and stick with those shots until you’re happy with your composition, exposure, and focus. When you’re ready for star trails, without changing your composition, focal length, or focus:

  1. Turn on your camera’s long exposure noise reduction (most cameras have it, though it’s usually buried deep in the menu system). LENR isn’t necessary for pinpoint stars (though it may help slightly—results vary with the camera manufacturer), but it makes a noticeable difference in star trail images. The downside of LENR is that it doubles your exposure time because the camera takes a second exposure of the same duration with the shutter closed, compares the results, and subtracts whatever it finds in both images. That means if you take a 30 minute exposure, you’ll need to wait another 30 minutes before viewing your results (which is another reason you want star trails to be at the end of your shoot).
  2. Put your camera in Bulb mode. On some cameras Bulb mode is one of the choices on the Aperture Priority, Shutter Priority, Manual (and so on) dial; on others Bulb is the step after 30 seconds as you increase the shutter speed.
  3. Now it’s time to do your exposure math. Assuming you want the same exposure (amount of light) you have in the pinpoint star images, determine how many stops of light your star trail shutter speed will add, then subtract that amount of light with some combination of lower ISO and smaller aperture (larger f-stop number). For example, if your star trail exposure is 30 seconds at ISO 3200 and f/2.8, a 30 minute exposure would add 6 stops (technically a full 6 stops would be all the way to 32 minutes, but those extra two minutes are inconsequential). I usually get my ISO down as far as possible before subtracting light with my f-stop, so in this example I’d probably go with 30-32 minutes, ISO 100, f/4.
  4. Now you’re ready to shoot. If your camera allows you to block the light entering through the viewfinder, now’s the time to engage that (if you don’t know what I’m talking about, you probably can’t do it, so don’t worry about it). Click the shutter button on your remote, lock it down, and check your watch or set a timer.
  5. Enjoy the view.

Processing

Before I start, let me just say that there are just about as many processing approaches as there are photographers. And there are far fewer absolute right/wrong ways to do things than you might read/hear/see. So what I’ll tell you here is the way I process a night image, rather than the way to process night image. If you already have a workflow you like, or if somebody else tells you a way you like better mine, go for it.

I wouldn’t even consider photographing night scenes in anything but raw. Not only do jpeg captures reduce your margin for error, a jpeg capture makes processing decisions that are difficult to impossible to reverse.

Gary Hart Photography: Skylight,The Milky Way and City Lights, Lake Wanaka, New Zealand

Sky Light,The Milky Way and City Lights, Lake Wanaka, New Zealand

Lightroom

  • Cool the color temperature: Since I photograph everything with auto white balance, in my raw processor (Lightroom) the first thing I do with a night image is cool the color temperature to introduce a little blue that gives the scene a more night-like feel. The temperature varies from image to image, but it’s usually in the 3,000-4,000 degrees range.
  • Noise reduction: Lightroom/Camera Raw noise reduction is much improved, but I don’t use it as my final noise solution. Rather, I do a subtle de-noise with the Lightroom color and luminosity sliders (you’ll notice much more difference with the luminosity slider than you will with the color slider),
  • Clarity: The Clarity slider brings out stars like magic, but you need to be careful about the noise it subtly (insidiously) increases right along with the stars. I’ve found that it’s easy to get so excited by what Clarity does to your stars that you overlook the more subtle damage it does to the noise in the image. I generally magnify my view to 1:1 and slowly pull my Clarity slider to the right, concentrating on the noise and ignoring the stars (as much as I can). I’ll be able to fix a little noise later with my Photoshop de-noise plugin, but I just try to be careful not to create additional problems for myself.
  • Dehaze: Like Clarity, the Dehaze slider can make a night image look spectacular, but it’s extremely easy to overdo so be gentle.
  • Standard Lightroom processing: While the above bullets are points of particular emphasis, that doesn’t mean that I don’t also apply the rest of my Lightroom workflow to a night image. Exposure, Highlights, Vibrance, Crop, and so on may or may not have their place in any given image.

Photoshop

  • Noise reduction (since NR is an art in itself, I won’t go into it in great deal here): I use Topaz DeNoise; it’s the first thing I do when I bring an image into Photoshop. Depending on the rest of frame, I often select the areas most prone to noise (shadows, sky, clouds, etc.) and process them separately from the areas with lots of detail (which may not get an NR treatment at all, or a much gentler treatment that preserves detail).
  • Dodge/burn: I find that many night images benefit from subtle dodge/burn brush strokes to smooth tone differences in the sky. For example, I often have to clean up slight vignetting, likely the result of shooting wide open (at an aperture far from the lens’s best). And sometimes I like to moderate the tone difference between the horizon line and the top of the frame. Another problem I occasionally encounter is a subtle brightness on one side of the frame or the other, caused by extraneous light (such as moonlight, nearby artificial light) leaking in from outside the frame.
  • Content Aware Fill: The longer the exposure, the greater the chance of something unwelcome finding its way into your frame. Headlights and airplanes are by far the biggest offender. But since the advent of Content Aware Fill, I no longer stress about these things.
  • Sharpen: Always my final step, I never sharpen an image until it’s sized for output. Especially with night photography, I selectively sharpen only those areas with important detail—dark shadows are never sharpened. And be careful when sharpening the sky—as with the Clarity slider, sharpening can make the stars pop but at the cost of extra noise. One trick I sometimes do after sharpening is brush with the history slider at around 85 percent (100 percent can sometimes create visible transitions) those areas of the sky without significant stars. And honestly, the more I do this, the less night image sharpening I do and in fact, I often do sharpen them at all.
  • Standard Photoshop processing: While the above bullets are points of particular emphasis, that doesn’t mean that I don’t also apply the rest of my Photoshop workflow to a night image.

New Zealand Photo Workshop

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A Starlight Gallery

Click an image for a closer look and to view a slide show.

A Milky Way Success Story (Phew)

Gary Hart Photography: Moonlight and Milky Way, Lake Wakatipu, New Zealand

Moonlight and Milky Way, Lake Wakatipu, New Zealand
Sony a7SII
Sony 16-35 f/2.8 GM
30 seconds
F/2.8
ISO 8000

Several people in this month’s New Zealand workshop had stated pretty emphatically that the Milky Way was a prime reason for attending—one guy even said his wife had told him not to come home without a Milky Way picture (we think she was joking). So no pressure. I reassured everyone in the orientation that I had multiple Milky Way shoots planned, but as the workshop’s nights ticked off, each Milky Way plan was doused—first by clouds, later by moonlight. And with the moon brightening and closer in the sky to the Milky Way each night, the we’d about run out of time.

I’d known all along that a waxing moon meant that our best Milky Way chances would come in the first half of the workshop. And I’d decided long before the workshop started that our final night would be especially problematic for the Milky Way not just because of the moon, but because of our location. But desperate times call for desperate measures, so with just a couple of days to go, I decided to recheck my calculations for about the millionth time (maybe a slight exaggeration, but you get the point). The two nights in Twizel were out of the question—the moon would be pretty much in the Milky Way. But our last night, in Queenstown…. Hmmm, maybe, just maybe, we’d have a 30-45 minute window between sunset and moonrise when the sky might be dark enough for the Milky Way to shine.

But the moon wasn’t the only obstacle. The forecast called for “high clouds,” a frustratingly vague forecast. And even if the sky darkened enough and the clouds cleared, we were in Queenstown, where I’d long ago decided that city lights and the orientation of Lake Wakatipu made finding Milky Way vantage point with a dark enough sky (no light pollution) and a nice enough foreground (lake and mountains) impossible. The moonlight and clouds risk were irrelevant if I couldn’t find a Milky Way location. But I had to give it a shot. Zooming in on the map, my eyes landed on one small tiny of lakeshore with enough of a twist that might work, though I’d never photographed there or even considered its Milky Way potential. But that was enough for me to circle the date and location and tell the group that we were going to give the Milky Way one more shot. All that was left to do was monitor the forecast and wait.

Wanting to be certain (and to avoid hunting blindly in the dark), on the way to our final sunset shoot I asked the driver to swing by my potential spot. I was relieved to confirm that the angle was good, and that there was an open, easily accessible stretch of beach. Yay. Down the road at our sunset location I just watched the clouds and hoped. The sky seemed clear enough there, but looked a little less promising back in the direction of my Milky Way location.

Arriving in twilight I hopped out of the van and checked the twilight sky—In addition to the promised high clouds, an accumulation of thicker clouds sat on the horizon more or less where the brightest part of the galactic center would be. And there were indeed a few high clouds, but Jupiter’s appearance was a relief because I knew Jupiter was on the leading edge of the Milky Way that night. Waiting for darkness, I prepared the group and just tried to stay positive. Every few minutes I’d return to my camera and fire a test frame to see if the sky was dark enough and look for any hint of moonlight.

You can’t imagine my excitement the first time my LCD displayed the faint glow of the Milky Way angling above 6000 foot Cecil Peak—we were in business. As the sky darkened, the Milky Way unfurled overhead in all its Southern Hemisphere glory, flanked by Jupiter and thousands of other stars in completely unfamiliar arrangements.

I started with my dedicated night photography setup, my Sony a7SII body and Sony 24 f/1.4 GM lens, trying a variety of horizontal and vertical compositions. After about 15 minutes I switched to my Sony 16-35 f/2.8 GM, sacrificing two stops of light for a wider field of view (more Milky Way). I liked the extra sky and stuck with that lens for the rest of the shoot.

After about 30 minutes of happy shooting we started to detect a brightening that signaled the moon’s approach behind The Remarkables (my hands-down favorite mountain range name). But rather than being a show stopper, the moonlight added a diaphanous sheen to the previously dark clouds and we kept going. As we wound down, the entire group was giddy with excitement, and I was giddy with relief. Just as we were started to pack up, I detected the faint reflection of Cecil Peak on the lake’s surface and adjusted my composition to include it.

To say that this night exceeded my expectations would be an understatement. In fact, my expectations almost dashed the entire shoot. It was a good a reminder not to get too locked in to preconceived notions. Had I stuck with my original belief that our final night in Queenstown wouldn’t work, I’d never have found a great Milky Way location—and one of the best shoots of an already great workshop would never have happened.

My tutorial on photographing the Milky Way


A Gallery of Stars

Click an image for a closer look and to view a slide show.

The Evolution of a Stargazer

Gary Hart Photography: Dark Sky, Milky Way Above the Colorado River, Grand Canyon

Dark Sky, Milky Way Above the Colorado River, Grand Canyon
Sony a7SII
Sony 24 f/1.4 GM
20 seconds
F/1.4
ISO 6400

In the Beginning

I grew up in a camping family. My dad was a minister, so pricey airline/hotel/restaurant vacations were out of the question for the five of us, as of course were weekend camping trips. But for as far back as I can remember, each summer my family went camping somewhere. Usually it was a week or two in Yosemite, Sequoia/Kings Canyon, the California coast, or some other relatively close scenic destination, but every few years we’d hook up the tent trailer, pile into the station wagon, and take a road trip.

The one constant in this numbing succession of summer campsites was the dark sky far from city lights, and the vast sprinkle of stars that mesmerized me. I soon learned that stargazing is the one thing a child can do for as long as he wants after bedtime without getting in trouble. I enjoyed playing connect-the-dots with the stars, identifying named constellations, or making up my own. It turned out all this scanning was a great way to catch shooting stars, and soon my goal was to stay awake until one flashed across my vision. And satellites were still something of a novelty back then, so another camping bedtime exercise was to slowly scan the sky looking for a “star” that moved; when I found one, I’d track it across the until it disappeared behind the horizon—or my eyelids.

At some point I became aware of a hazy band of light stretching across my night sky. On the darkest nights, when my vantage point faced the right direction, the widest and brightest part of this band reminded me of sugar spilled on pooled ink. But the Milky Way wasn’t as dramatic some of the other stuff in my night skies, so the childhood Me was oblivious to its inherent coolness for many years.

On these nightly scans I was more interested in the apparent randomness in the patterns overhead—the consistency of certain stellar arrangements, while a few bright “stars” would be in different positions each night relative to these recognizable patterns. Someone explained to me the difference between stars and planets, that stars were far and planets were close, and that was good enough for me. For a while.

Then, when I was about ten, my best friend and I did a science project on comets, which ignited a sudden and intense interest in all things astronomical. I was gifted a second-hand telescope by a friend of my dad, which we’d set up in my best friend’s front yard on summer nights. Through the telescope the stars remained (boring) points of light, no matter how much I magnified them, but the planets became fascinating disks, each with its own personality. I learned that Venus and Mercury were actually crescents of varying size, just like a mini moon. After searching in vain for the canals on Mars, I was thrilled to (barely) see Saturn’s rings, and to watch the nightly dance of the four pin-prick Galilean moons.

All this stargazing helped me develop a rudimentary understanding of celestial relationships, the vastness of space, the sun’s dominant role in our solar system, and its utter insignificance in the Universe. And the more I learned about astronomy, the more fascinating our home galaxy became. Rather than just passively observing it, the Milky Way became a catalyst for pondering the mysteries of the Universe and my favorite night sky feature.

Fast forward…

Then came college, marriage, family, jobs, cameras (lots of cameras) until I found myself at the bottom of the Grand Canyon on this moonless night in May. It was the second night of my annual Grand Canyon Raft Trip for Photographers, a highlight in a year full of highlights, and my first opportunity each year to reconnect with my favorite celestial feature. After night one hadn’t worked out, I told myself that we still had four more chances, but at bedtime on night two I was a little more pessimistic.

The prescription for a successful Milky Way photograph includes a clear view of the southern sky with a nice foreground. There’s no shortage of foreground in the Grand Canyon, but southern sky views are not quite so plentiful. The first night had been spectacularly clear, but our otherwise spectacular campsite was on an east/west trending section of river (I try to select each campsite for its astrophotography potential, but the sites can’t be reserved, and sometime there are other factors to consider), which placed the rising galactic core behind a towering canyon wall. On our second day we’d scored prime real estate on a north/south section of river a few miles upstream from Desert View, but now thin clouds threatened to spoil the show.

In May the Milky Way doesn’t usually crest the canyon walls until 2:00 or 3:00 a.m. (depending on the location), but as we prepared for bed that second day, only a handful of stars smoldered in the gauzy veil above. But with six hours for conditions to improve, I prepared anyway, identifying my foreground, setting up my tripod next to my cot, and mounting my Sony a7SII body and Sony 24mm f/1.4 lens with ISO, f-stop, and shutter speed set.

Waking a little before 3:00, I instantly saw far more stars than had been visible at bedtime. But more importantly, there was the Milky Way, directly overhead. I sat up and peered toward the river—the soft glow of several LCD screens told me others were already shooting, so I grabbed my tripod and stumbled down to the river’s edge in the dark (to avoid illuminating the others’ scene). It’s quite amazing how well you can see by the light of the Milky Way once your eyes adjust.

After a few frames I saw that a few thin clouds remained, creating interesting patterns against the starry background. By about 4 a.m., an hour-and-a-half before sunrise, loss of contrast in my images that wasn’t visible to my eyes told me the approaching sun was already starting to brighten the sky. I photographed for about an hour that morning, then managed to catch another 45 minutes of contented sleep before the guides’ coffee call got me up for good.

Workshop Schedule || Purchase Prints


I continue updating my Photo Tips articles—here’s my just-updated Milky Way article,

with all you need to know to locate and photograph our home galaxy


How to photograph the Milky Way

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See the Milky Way

Look heavenward on a moonless (Northern Hemisphere) summer night far from city light. The first thing to strike you is the shear volume of stars, but as your eyes adjust, your gaze is drawn to a luminous band spanning the sky. Ranging from magnificently brilliant to faintly visible, this is the Milky Way, home to our sun and nearly a half trillion other stars of varying age, size, and temperature.

Size and shape

Though every star you’ve ever seen is part of our Milky Way galaxy, stargazers use the Milky Way label more specifically to identify this river of starlight, gas, and dust spanning the night sky. As you feast your eyes, appreciate that some of the Milky Way’s starlight has traveled 25,000 years to reach your eyes, and light from a star on one edge of the Milky Way would take 100,000 years to reach the other side.

Spiral Galaxy (Milky look-alike): This is what our galaxy would look like from above.

Milky Way look-alike spiral galaxy: This is what our galaxy would look like from the outside, looking in. (The individual stars visible here are “local” and not part of the spiral galaxy depicted here.) Earth would be between two of the spiral arms, about halfway out from the center.

The rest of the sky appears to be filled with far more discrete stars than the region containing the Milky Way, but don’t let this deceive you. Imagine that you’re out in the countryside where the lights of a distant city blend into a homogeneous glow—similarly, the stars in the Milky Way’s luminous band are simply too numerous and distant to resolve individually. On the other hand, the individual pinpoints of starlight that we name and mentally assemble into constellations are just closer, much like the lights of nearby farmhouses. And the dark patches in the Milky Way aren’t empty space—like the trees and mountains that block our view of the city, they’re starlight-blocking interstellar dust and gas, remnants of exploded stars and the stuff of future stars.

Just as it’s impossible to know what your house looks like by peering out a window, it’s impossible to know what the Milky Way looks like by simply looking up on a dark night. Fortunate for us, really smart people have been able to infer from painstaking observation, measurement, reconstruction, and comparison with other galaxies that our Milky Way is flat (much wider than it is tall) and spiral shaped, like a glowing pinwheel, with two major arms and several minor arms spiraling out from its center. Our solar system is in one of the Milky Way’s minor arms, a little past midway between the center and outer edge.

Blinded by the light

Sadly, artificial light and atmospheric pollution have erased the view of the Milky Way for nearly a third of the world’s population, and eighty percent of Americans. Worse still, even though some part of the Milky Way is overhead on every clear night, many people have never seen it.

Advances in digital technology have spurred a night photography renaissance that has enabled the Milky Way challenged to enjoy images of its splendor from the comfort of their recliner, but there’s nothing quite like viewing it in person. With just a little knowledge and effort, you too can enjoy the Milky Way firsthand; add the right equipment and a little more knowledge, and you’ll be able to photograph it as well.

Horizon to Horizon

Understanding that our Solar System is inside the Milky Way’s disk makes it easier to understand why we can see some portion of the Milky Way on any night (assuming the sky is dark enough). In fact, from our perspective, the plane of the Milky Way forms a complete ring around Earth (but of course we can only see half the sky at any given time), with its brightness varying depending on whether we’re looking toward our galaxy’s dense center or sparse outer region.

Where the action is

Milky Way and Halemaʻumaʻu Crater, Kilauea, Hawaii

The Milky Way’s brilliant center, its “galactic core,” radiates above Kilauea on Hawaii’s Big Island

Though the plane of the Milky Way stretches all the way across our sky, when photographers talk about photographing the Milky Way, they usually mean the galactic core—the Milky Way’s center and most densely packed, brightest region. Unfortunately, our night sky doesn’t always face the galactic core, and there are many months when this bright region is not visible at all.

To understand the Milky Way’s visibility in our night sky, it helps to remember that Earth both rotates on its axis (a day), and revolves around the sun (a year). When the side of the planet we’re on rotates away from the sun each day, the night sky we see is determined by our position on our annual trip around the sun—when Earth is between the sun and the galactic core, we’re in position to see the most brilliant part of the Milky Way; in the months when the sun is between earth and the galactic core, the bright part of the Milky Way can’t be seen.

Put in terrestrial terms, imagine you’re at the neighborhood playground, riding a merry-go-round beneath a towering oak tree. You face outward, with your back to the merry-go-round’s center post. As the merry-go-round spins, your view changes—about half of the time you’d rotate to face the oak’s trunk, and about half the time your back is to the tree. Our solar system is like that merry-go-round: the center post is the sun, the Milky Way is the tree, and in the year it takes our celestial merry-go-round to make a complete circle, we’ll face the Milky Way about half the time.

Finding the Milky Way

Just like every other celestial object outside our solar system, the Milky Way’s position in our sky changes with the season and time of night you view it, but it remains constant relative to the other stars and constellations. This means you can find the Milky Way by simply locating any of the constellations in the galactic plane. Here’s an alphabetical list of the constellations* through which the Milky Way passes (with brief notes by a few of the more notable constellations):

  • Aquila
  • Ara
  • Auriga—faintest
  • Canis Major—faint
  • Carina
  • Cassiopeia—faint; its easily recognized “w” (or “m”) shape makes Cassiopeia a good landmark for locating the Milky Way in the northern sky
  • Cepheus
  • Circinus
  • Crux
  • Cygnus—bright
  • Gemini
  • Lacerta
  • Lupus
  • Monoceros
  • Musca
  • Norma
  • Ophiuchus
  • Orion—faint; another easy to recognize constellation that’s good for finding the galactic plane
  • Perseus—faint
  • Puppis
  • Pyxis
  • Sagitta
  • Sagittarius—brightest, galactic core
  • Scorpius—bright
  • Scutum
  • Serpens
  • Taurus—faint
  • Triangulum
  • Vela
  • Vulpecula
* Constellations are comprised of stars that only appear connected by virtue of our Earth-bound perspective—a constellation is a direction in the sky, not a location in space.

If you can find any of these constellations, you’re looking in the direction of some part of the Milky Way (if you can’t see it, your sky isn’t dark enough). But most of us want to see the center of the Milky Way, where it’s brightest, most expansive, and most photogenic. The two most important things to understand about finding the Milky Way’s brilliant center are:

  • From our perspective here on Earth, the galactic core is in Sagittarius (and a couple of other constellations near Sagittarius)—when Sagittarius is visible, so is the brightest part of the Milky Way (assuming you can find a dark enough sky)
  • Earth’s night side most directly faces Sagittarius in the Northern Hemisphere’s summer months (plus part of spring and autumn)

Armed with this knowledge, locating the Milky Way’s core is as simple as opening one of my (too many) star apps to find out where Sagittarius is. Problem solved. Of course it helps to know that the months when the galactic core rises highest and is visible longest are June, July, and August, and to not even consider looking before mid-March, or after mid-October. If you can’t wait until summer and don’t mind missing a little sleep, starting in April, Northern Hemisphere residents with a dark enough sky can catch Sagittarius and the galactic core rising in the southeast shortly before sunrise. After its annual premier in April, the Milky Way’s core rises slightly earlier each night and is eventually well above the horizon by nightfall.

People who enjoy sleep prefer doing their Milky Way hunting in late summer and early autumn, when the galactic core has been above the horizon for most of the daylight hours, but remains high in the southwest sky as soon as the post-sunset sky darkens enough for the stars to appear. The farther into summer and autumn you get, the closer to setting beneath the western horizon the Milky Way will be at sunset, and the less time you’ll have before it disappears.

Into the darkness

The Milky Way is dim enough to be easily washed out by light pollution and moonlight, so the darker your sky, the more visible the Milky Way will be. To ensure sufficient darkness, I target moonless hours, from an hour or so after sunset to an hour before sunrise. New moon nights are easiest because the new moon rises and sets (more or less) with the sun and there’s no moon all night. But on any night, if you pick a time before the moon rises, or after it sets, you should be fine. Be aware that the closer the moon is to full, the greater the potential for its glow to leak into the scene from below the horizon.

Getting away from city lights can be surprisingly difficult (and frustrating). Taking a drive out into the countryside near home is better than nothing, and while it may seem dark enough to your eyes, a night exposure in an area that you expect to be dark enough reveals just how insidious light pollution is as soon as you realize all of your images are washed out by an unnatural glow on the horizon. Since the galactic core is in the southern sky in the Northern Hemisphere, you can mitigate urban glow in your Milky Way images by heading south of any nearby population area, putting the glow behind you as you face the Milky Way.

Better than a night drive out to the country, plan a trip to a location with a truly dark sky. For this, those in the less densely populated western US have an advantage. The best resource for finding world-class dark skies anywhere on Earth is the International Dark-Sky Association. More than just a resource, the IDA actively advocates for dark skies, so if the quality of our night skies matters to you, spend some time on their site, get involved, and share their website with others.

Photograph the Milky Way

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Viewing the Milky Way requires nothing more than a clear, dark sky. (Assuming clean, clear skies) the Milky Way’s luminosity is fixed, so our ability to see it is largely a function of the darkness of the surrounding sky—the darker the sky, the better the Milky Way stands out. But because our eyes can only take in a fixed amount of light, there’s a ceiling on our ability to view the Milky Way with the unaided eye.

A camera, on the other hand, can accumulate light for a virtually unlimited duration. This, combined with technological advances that continue increasing the light sensitivity of digital sensors, means that when it comes to photographing the Milky Way, well…, the sky’s the limit. As glorious as it is to view the Milky Way with the unaided eye, a camera will show you detail and color your eyes can’t see.

Knowing when and where to view the Milky Way is a great start, but photographing the Milky Way requires a combination of equipment, skill, and experience that doesn’t just happen overnight (so to speak). But Milky Way photography doesn’t need to break the bank, and it’s not rocket science.

Equipment

Bottom line, photographing the Milky Way is all about maximizing your ability to collect light: long exposures, fast lenses, high ISO.

Camera

In general, the larger your camera’s sensor and photosites (the “pixels” that capture the light), the more efficiently it collects light. Because other technology is involved, there’s not an absolute correlation between sensor and pixel size and light gathering capability, but a small, densely packed sensor almost certainly rules out your smartphone and point-and-shoot cameras for anything more than a fuzzy snap of the Milky Way. At the very least you’ll want a mirrorless or DSLR camera with an APS-C (1.5/1.6 crop) size sensor. Better still is a full frame mirrorless or DSLR camera. (A 4/3 Olympus or Panasonic sensor might work, but as great as these cameras are for some things, high ISO photography isn’t their strength.

Another general rule is that the newer the technology, the better it will perform in low light. Even with their smaller, more densely packed sensors, many of today’s top APS-C bodies outperform in low light full frame bodies that have been out for a few years, so full frame or APS-C, if your camera is relatively new, it will probably do the job.

If you’re shopping for a new camera and think night photography might be in your future, compare your potential cameras’ high ISO capabilities—not their maximum ISO. Read reviews by credible sources like DP Review, Imaging Resource, or DxOMark (among many others) to see how your camera candidates fare in objective tests.

An often overlooked consideration is the camera’s ability to focus in extreme low light. Autofocusing on the stars or landscape will be difficult to impossible, and you’ll not be able to see well enough through a DSLR’s viewfinder to manually focus. Some bodies with a fast lens might autofocus on a bright star or planet, but it’s not something I’d count on (though I expect within a few years before this capability will become more common).

Having photographed for years with Sony and Canon, and working extensively with most other mirrorless and DSLR bodies in my workshops, I have lots of experience with cameras from many manufacturers. In my book, focus peaking makes mirrorless the clear winner for night focusing. Sony’s current mirrorless bodies (a7RII/RIII, a7S/SII) are by far the easiest I’ve ever used for focusing in the dark—what took a minute or more with my Canon, I can do in seconds using focus peaking with my Sony bodies (especially the S bodies). I use the Sony a7SII, but when I don’t want to travel with a body I only use for night photography, the Sony a7RIII does the job too. Of the major DSLR brands, I’ve found Canon’s superior LCD screen (as of 2019) makes it much easier to focus in extreme low light than Nikon. (More on focus later.)

Lens

Put simply, to photograph the Milky Way you want fast, wide glass—the faster the better. Fast to capture as much light as possible; wide to take in lots of sky. A faster lens also makes focus and composition easier because the larger aperture gathers more light. How fast? F/2.8 or faster—preferably faster. How wide? At least 28mm, and wider is better still. I do enough night photography that I have a dedicated, night-only lens—my original night lens was a Canon-mount Zeiss 28mm f/2; my current night lens is the Sony 24mm f/1.4.

Tripod

It goes without saying that at exposure times up to 30 seconds, you’ll need a sturdy tripod and head for Milky Way photography. You don’t need to spend a fortune, but the more you spend, the happier you’ll be in the long run (trust me). Carbon fiber provides the best combination of strength, vibration reduction, and light weight, but a sturdy (albeit heavy) aluminum tripod will do the job.

An extended centerpost is not terribly stable, and a non-extended centerpost limits your ability to spread the tripod’s legs and get low, so I avoid tripods with a centerpost. But if you have a sturdy tripod with a centerpost, don’t run out and purchase a new one—just don’t extend the centerpost when photographing at night.

Read my tips for purchasing a tripod here.

Other stuff

To eliminate the possibility of camera vibration I recommend a remote release; without a remote you’ll risk annoying all within earshot with your camera’s 2-second timer beep. You’ll want a flashlight or headlamp for the walk to and from the car, and your cell phone for light while shooting. And it’s never a bad idea to toss an extra battery in your pocket. And speaking of lights, never, never, NEVER use a red light for night photography (more on this later).

Getting the shot

Keep it simple

There are just so many things that can go wrong on a moonless night when there’s not enough light to see camera controls, the contents of your bag, and the tripod leg you’re about to trip over. After doing this for many years, both on my own and helping others in workshops, I’ve decided that simplicity is essential.

Simplicity starts with paring down to the absolute minimum camera gear: a sturdy tripod, one body, one lens, and a remote release (plus an extra battery in my pocket). Everything else stays at home, in the car, or if I’m staying out after a sunset shoot, in my bag.

Upon arrival at my night photography destination, I extract my tripod, camera, lens (don’t forget to remove the polarizer), and remote release. I connect the remote and mount my lens—if it’s a zoom I set the focal length at the lens’s widest—then set my exposure and focus (more on exposure and focus below). If I’m walking to my photo site, I carry the pre-exposed and focused camera on the tripod (I know this makes some people uncomfortable, but if you don’t trust your tripod head enough to hold onto your camera while you’re walking, it’s time for a new head), trying to keep the tripod as upright and stable as possible as I walk.

Flashlights/headlamps are essential for the walk/hike out to to and from my shooting location, but while I’m there and in shoot mode, it’s no flashlights, no exceptions. This is particularly important when I’m with a group. Not only does a flashlight inhibit your night vision, its light leaks into the frame of everyone who’s there. And while red lights may be better for your night vision and are great for telescope view, red light is especially insidious about leaking into everyone’s frame, so if you plan to take pictures, no red light! If you follow my no flashlight rule once the photography begins, you’ll be amazed at how well your eyes adjust. I can operate my camera’s controls in the dark—it’s not hard with a little practice, and well worth the effort to learn. If I ever do need to see my camera to adjust something, or if I need to see to move around, my cell phone screen (not the phone’s flashlight, just its illuminated screen) gives me all the light I need.

Composition

A good Milky Way image is distinguished from an ordinary Milky Way image by its foreground. Simply finding a location that’s dark enough to see the Milky Way is difficult enough; finding a dark location that also has a foreground worthy of pairing with the Milky Way usually takes a little planning.

Since the Milky Way’s center is in the southern sky (for Northern Hemisphere observers), I look for remote (away from light pollution) subjects that I can photograph while facing south (or southeast or southwest, depending on the month and time of night). Keep in mind that unless you have a ridiculous light gathering camera (like the Sony a7S or a7S II) and an extremely fast lens (f/2 or faster), your foreground will probably be more dark shape than detail. Water’s inherent reflectivity makes it a good foreground subject as well, especially if the water includes rocks or whitewater.

When I encounter a scene I deem photo worthy, not only do I try to determine its best light and moon rise/set possibilities, I also consider its potential as a Milky Way subject. Can I align it with the southern sky? Are there strong subjects that stand out against the sky? Is there water I can include in my frame?

I’ve found views of the Grand Canyon from the North Rim, the Kilauea Caldera, and the bristlecone pines in California’s White Mountains that work spectacularly. And its hard to beat the dark skies and breathtaking foreground possibilities at the bottom of the Grand Canyon. On the other hand, while Yosemite Valley has lots to love, you don’t see a lot of Milky Way images from Yosemite Valley because not only is there a lot of light pollution, and Yosemite’s towering, east/west trending granite walls give its south views an extremely high horizon that blocks much of the galactic core from the valley floor.

The last few years I’ve started photographing the Milky Way above the spectacular winter scenery of New Zealand’s South Island, where the skies are dark and the Milky Way is higher in the sky than it is in most of North America.

To maximize the amount of Milky Way in my frame, I generally (but not always) start with a vertical orientation that’s at least 2/3 sky. On the other hand, I do make sure to give myself more options with a few horizontal compositions as well. Given the near total darkness required of a Milky Way shoot, it’s often too dark to see well enough to compose that scene. If I can’t see well enough to compose I guess at a composition, take a short test exposure at an extreme (unusable) ISO to enable a relatively fast shutter speed (a few seconds), adjust the composition based on the image in the LCD, and repeat until I’m satisfied.

Focus

Needless to say, when it’s dark enough to view the Milky Way, there’s not enough light to autofocus (unless you have a rare camera/lens combo that can autofocus on a bright star and planet), or even to manually focus with confidence. And of all the things that can ruin a Milky Way image (not to mention an entire night), poor focus is number one. Not only is achieving focus difficult, it’s very easy to think you’re focused only to discover later that you just missed.

Because the Milky Way’s focus point is infinity, and you almost certainly won’t have enough light to stop down for more depth of field, your closest foreground subjects should be far enough away to be sharp when you’re wide open and focused at infinity. Before going out to shoot, find a hyperfocal app and plug in the values for your camera and lens at its widest aperture. Even though it’s technically possible to be sharp from half the hyperfocal distance to infinity, the kind of precise focus focusing on the hyperfocal point requires is difficult to impossible in the dark, so my rule of thumb is to make sure my closest subject is no closer than the hyperfocal distance.

For example, I know with my Sony 24mm f/1.4 wide open on my full frame Sony a7SII, the hyperfocal distance is about 50 feet. If I have a subject that’s closer (such as a bristlecone pine), I’ll pre-focus (before dark) on the hyperfocal distance, or shine a bright light on an object at the hyperfocal distance and focus there, but generally I make sure everything is at least 50 feet away. Read more about hyperfocal focus in my Depth of Field article.

By far the number one cause of night focus misses is the idea that you can just dial any lens to infinity; followed closely by the idea that focused at one focal length means focused at all focal lengths. Because when it comes to sharpness, almost isn’t good enough, if you have a zoom lens, don’t even think of trying to dial the focus ring to the end for infinity. And even for most prime lenses, the infinity point is a little short of all the way to the end, and can vary slightly with the temperature and f-stop. Of course if you know your lens well enough to be certain of its infinity point by feel (and are a risk taker), go for it. And that zoom lens that claims to be parfocal? While it’s possible that your zoom will hold focus throughout its entire focal range, regardless of what the manufacturer claims, I wouldn’t bet an entire shoot on it without testing first.

All this means that the only way to ensure night photography sharpness is to focus carefully on something before shooting, refocus every time your focal length changes, and check focus frequently by displaying and magnifying an image on your LCD. To simplify (there’s that word again), when using a zoom lens, I usually set the lens at its widest focal length, focus, verify sharpness, and (once I know I’m focused) never change the focal length again.

While the best way to ensure focus is to set your focal length and focus before it gets dark, sometimes pre-focusing isn’t possible, or for some reason you need to refocus after darkness falls. If I arrive at my destination in the dark, I autofocus on my headlights, a bright flashlight, or a laser 50 feet or more away. And again, never assume you’re sharp by looking at the image that pops up on the LCD when the exposure completes—always magnify your image and check it after you focus.

For more on focusing in the dark, including how to use stars to focus, read my Starlight Photo Tips article.

Exposure

Exposing a Milky Way image is wonderfully simple once you realize that you don’t have to meter—because you can’t (not enough light). Your goal is simply to capture as many photons as you can without damaging the image with noise, star motion, and lens flaws.

Basically, with today’s technology you can’t give a Milky Way image too much light—you’ll run into image quality problems before you overexpose a Milky Way image. In other words, capturing the amount of light required to overexpose a Milky Way image is only possible if you’ve chosen an ISO and/or shutter speed that significantly compromises the quality of the image with excessive noise and/or star motion.

In a perfect world, I’d take every image at ISO 100 and f/8—the best ISO and f-stop for my camera and lens. But that’s not possible when photographing in near total darkness—a usable Milky Way image requires exposure compromises. What kind of compromises? The key to getting a properly exposed Milky Way image is knowing how far you push your camera’s exposure settings before the light gained isn’t worth the diminished quality. Each exposure variable causes a different problem when pushed too far:

  • ISO: Raising ISO to increase light sensitivity comes with a corresponding increase in noise that muddies detail. The noise at any particular ISO varies greatly with the camera, so it’s essential to know your camera’s low-light capability(!). Some of the noise can be cleaned up with noise reduction software (I use Topaz DeNoise 6)—the amount that cleans up will depend on the noise reduction software you use, your skill using that software, and where the noise is (is it marring empty voids or spoiling essential detail?).
  • Shutter speed: The longer the shutter stays open, the more motion blur spreads the stars’ distinct pinpoints into streaks. I’m not a big fan of formulas that dictate star photography shutter speeds because I find them arbitrary and inflexible, and they fail to account for the fact that the amount of apparent stellar motion varies with the direction you’re composing (you’ll get less motion the closer to the north or south poles you’re aimed). My general shutter-speed rule of thumb is 30-seconds or less, preferably less—I won’t exceed 30 seconds, and do everything I can to get enough light with a faster shutter speed.
  • F-stop: At their widest apertures, lenses tend to lose sharpness (especially on the edges) and display optical flaws like comatic aberration (also called coma) that distorts points of light (like stars) into comet shaped blurs. For many lenses, stopping down even one stop from wide open significantly improves image quality.

Again: My approach to metering for the Milky Way is to give my scene as much light as I can without pushing the exposure compromises to a point I can’t live with. Where exactly is that point? Not only does that question require a subjective answer that varies with each camera body, lens, and scene, as technology improves, I’m less forgiving of exposure compromises than I once was. For example, when I started photographing the Milky Way with my Canon 1DS Mark III, the Milky Way scenes I could shoot were limited because my fastest wide lens was f/4 and I got too much noise when I pushed my ISO beyond 1600. This forced me compromise by shooting wide open with a 30-second shutter speed to achieve even marginal results. In fact, given these limitations, despite trying to photograph the Milky Way from many locations, when I started the only Milky Way foreground that worked well enough was Kilauea Caldera, because it was its own light source (an erupting volcano).

Today (mid-2019) I photograph the Milky Way with a Sony a7S II and a Sony 24mm f/1.4 lens. I get much cleaner images from my Sony at ISO 6400 than got a ISO 1600 on my Canon 1DSIII, and the night light gathering capability of an f/1.4 lens revelatory. At ISO 6400 (or higher) I can stop down slightly to eliminate lens aberrations (though I don’t seem to need to with the Sony lens), drop my shutter speed to 20 or 15 seconds to reduce star motion 33-50 percent, and still get usable foreground detail by starlight.

I can’t emphasize enough how important it is to know your camera’s and lens’s capabilities in low light, and how for you’re comfortable pushing the ISO and f-stop. For each of the night photography equipment combos I’ve used, I’ve established a general exposure upper threshold, rule-of-thumb compromise points for each exposure setting that I won’t exceed until I’ve reached the compromise threshold of the other exposure settings. For example, with my Sony a7SII/24mm f/1.4 combo, I usually start at ISO 6400, f/1.4, and 20 seconds. Those settings will usually get me enough light for Milky Way color and pretty good foreground detail. But if I want more light (for example, if I’m shooting into the black pit of the Grand Canyon from the canyon rim), my first exposure compromise might be to increase to ISO 12800; if I decide I need even more light, my next compromise is to bump my shutter speed to 30 seconds. Or if I want a wider field of view than 24mm, I’ll put on my Sony 16-35 f/2.8 G lens and increase to ISO 12800 and 30 seconds.

These thresholds are guidelines rather than hard-and-fast rules, and they apply to my preferences only—your results may vary. And though I’m pretty secure with this workflow, for each Milky Way composition I try a variety of exposure combinations before moving to another composition. Not only does this give me a range of options to choose between when I’m at home and reviewing my images on a big monitor, it also gives me more insight into my camera/lens capabilities, allowing me to refine my exposure compromise threshold points.

One other option that I’ve started applying automatically is long exposure noise reduction, which delivers a noticeable reduction in noise for exposures that are several seconds and longer.

* In normal situations the Sony a7SII can handle ISO 12,800 without even breathing hard, but the long exposure time required of night photography generates a lot of heat on the sensor with a corresponding increase in noise.

It’s time to click that shutter

You’re in position with the right gear, composed, focused, and exposure values set. Before you actually click the shutter, let me remind you of a couple of things you can do to ensure the best results: First, lower that center post. A tripod center post’s inherent instability is magnified during long exposures, not just by wind, but even by nearby footsteps, the press of the shutter button, and slap of the mirror (and sometimes it seems, by ghosts). And speaking of shutter clicks, you should be using a remote cable or two-second timer to eliminate the vibration imparted when your finger presses the shutter button.

When that first Milky Way image pops up on the LCD, it’s pretty exciting. So exciting in fact that sometimes you risk being lulled into a “Wow, this isn’t as hard as I expected” complacency. Even though you think everything’s perfect, don’t forget to review your image sharpness every few frames by displaying and magnifying and image on your LCD. In theory nothing should change unless you changed it, but in practice I’ve noticed an occasional inclination for focus to shift mysteriously between shots. Whether it’s slight temperature changes or an inadvertent nudge of the focus ring as you fumble with controls in the dark, you can file periodically checking your sharpness falls under “an ounce of prevention….” Believe me, this will save a lot of angst later.

And finally, don’t forget to play with different exposure settings for each composition. Not only does this give you more options, it also gives you more insight into your camera/lens combo’s low light capabilities.

The bottom line

Though having top-of-the-line, low-light equipment helps a lot, it’s not essential. If you have a full frame mirrorless or DSLR camera that’s less than five years old, and a lens that’s f/2.8 or faster, you probably have all the equipment you need to get great the Milky Way images. Even with a cropped sensor, or an f/4 lens, you have a good chance of getting usable Milky Way images in the right circumstances. If you’ve never photographed the Milky Way before, don’t expect perfection the first time out. What you can expect is improvement each time you go out as you learn the limitations of your equipment and identify your own exposure compromise thresholds. And success or failure, at the very least you’ll have spent a magnificent night under the stars.

Workshop Schedule || Purchase Prints


A Milky Way Gallery

Click an image for a closer look and slide show. Refresh the window to reorder the display.

2018 Highlights

Gary Hart Photography: Milky Way Reflection, Colorado River, Grand Canyon

Milky Way Reflection, Colorado River, Grand Canyon
Sony a7S II
Rokinon 24mm f/1.4
20 seconds
f/1.4
ISO 12,800

I’ve always struggled with the “top-whatever” end-of-year countdown of my favorite images because the choices are so subjective and mood dependent, and so many images are favorites as much for their memories as they are for their aesthetic value. And coming up with a predetermined number is arbitrary, and inevitably requires choices I don’t want to make and will almost certainly regret later. One year I may have only seven or eight images that thrill me; the next year I might have two dozen. This year I chose 27, and I still have some left to process.

So rather than attempt to rate and rank my images at year’s end, I prefer using them as a catalyst for reflection. Each December I go through everything I’ve processed from the waning year (this year I know of several that would certainly qualify as a highlight but they’re as yet unprocessed) think about the circumstances of their capture.

I remember

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I remember the New Year’s Eve solo drive to Yosemite to photograph the full moon rising behind, followed by a night drive to the other side of the Sierra (a six hour drive in winter) where I hoped to capture the full moon setting behind Mt. Whitney. The Yosemite part of that trip was spectacular, the Mt. Whitney half was a photography flop, but I enjoyed the entire journey.

I remember nearly a month in New Zealand, photographing the South Island’s unmatched beauty in its most beautiful season (hint: brrrrrrr). In New Zealand I hiked on a glacier, photographed the (far superior) Southern Hemisphere version of Milky Way, was chased through a fjord by leaping dolphins, witnessed one of the most vivid crimson sunrises I’ve ever seen, and logged hundreds of quality kilometers with a group of wonderful people.

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I remember a solo drive to Yosemite to photograph fresh snow, never a sure thing regardless of the forecast. I approached Yosemite on the evening prior, I felt like a lone spawning salmon fighting up current against the continuous stream of headlights evacuating Yosemite in advance of the storm. I settled into my room in dark and dry Yosemite Valley, and woke to so much snow that I couldn’t find my car. I’m convinced there is nothing, nothing on Earth more beautiful than Yosemite Valley with fresh snow, and with the park mostly vacant and the noise-damping quality of powdery snow, for a few hours I felt like I had heaven all to myself.

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I remember chasing lightning on the Grand Canyon’s North Rim, the thrill (and relief) when everyone in both workshop groups captured lightning, and an especially spectacular lightning storm that started in the telephoto distances and chased us to the cars. This year’s Grand Canyon workshops were altered by fires burning in and near the park and I feared that they’d spoil the photography—instead, in addition to all the lightning, we ended up with spectacular red-rubber-ball sunrises and sunsets that allowed genuinely unique images in this heavily photographed destination.

I remember arriving on the Big Island shortly after Kilauea had shut down after 35 years of continuous eruption, and discovering that between the just-concluded Kilauea eruption and the recently depart remnants of Hurricane Lane, I’d lost nearly half of my locations. Instead I ended up finding alternate photo spots that I like even better than the ones I lost. The high point (literally and figuratively) of that trip turned out to be a chilly, first-ever sunset and Milky Way shoot from atop 13,800 foot Mauna Kea.

I remember my Yosemite Fall Color workshop group finding Yosemite Valley at peak fall color, and three beautiful moonrises in my just concluded winter moon workshop. And while thousand of photographers jockeyed for position beneath bone dry Horsetail Fall in February, my workshop group set up elsewhere and photographed one of the most beautiful sunsets of the year.

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I remember way back in January, along with my Death Valley workshop group, photographing my first-ever lunar eclipse (on the heals of my first-ever solar eclipse in August of 2017).

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And I remember trudging through Grand Canyon sand by starlight to a spot that I’d decided before nightfall was probably not a good Milky Way candidate, and discovering that I was wrong. It turned out the level of the Colorado River level had changed in the night, replacing mushy sand with a swirling pool that rendered the Milky Way’s reflection as a luminous abstract.

Gary Hart Photography: Milky Way Reflection, Colorado River, Grand Canyon

Milky Way Reflection, Colorado River, Grand Canyon

I could go on and on about my memories of 2018, but all these great memories also remind me of the unknown highlights in store for 2019. Certainly the planned trips, which include my first-ever Iceland visit (with Don Smith in preparation for our 2020 workshop), my first-ever Oregon Coast workshop (with Don Smith), another raft trip through the Grand Canyon, a return visit to New Zealand, and on and on. But what excites me more than anything is the inevitable surprises, those special moments that dazzle when dazzling is the last thing you expect. Bring it on!


2018 Highlights

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New Zealand Night

Gary Hart Photography: Mars Rising, Milky Way and Lake Hawea, New Zealand

Mars Rising, Milky Way and Lake Hawea, New Zealand
Sony a7S II
Sony 16-35 f/2.8 GM
15 seconds
F/2.8
ISO 12800

One of the questions I get the most about the New Zealand workshop Don Smith and I do is, “Why winter?” The simple answer is that it’s the best time to photograph there. This answer is usually followed with, “But isn’t it cold?” Not really—it’s more like a Northern California or Oregon winter, with highs in the 40s and 50s, and lows in the 20s and 30s. Also like Northern California and Oregon, New Zealand’s South Island gets some rain and fog in the lowlands, and snow in the mountains—so much better for photography than the persistent blue skies of the California summer I left behind.

While the conditions are certainly tolerable, and winter storms whiten the many peaks and fill the skies with interesting clouds, when pressed for more specifics on my preference for a New Zealand winter, it’s usually not long before I get to the night sky. With clean air and minimal light pollution, New Zealand is an astrophotographer’s paradise any season. But winter is when the Milky Way’s brilliant center shines prominently all night, rising much higher above the horizon than my Northern Hemisphere eyes are accustomed to.

One night in Wanaka Don and I took the group for short drive out to a vista overlooking Lake Hawea, one of many large glacial lakes decorating the South Island. I knew we’d get the Milky Way, but had forgotten about Mars, near opposition and shining brighter than it has in 15 years. We found it rising across the lake, so bright that it cast a sparkling reflection on the water. I started with vertical compositions, but soon switched to horizontal to include both Mars and the snow-capped peaks rising above the north shore.

Here are a couple of links to help with your night photography:

A New Zealand Winter Gallery

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Oh, What a Night…

Gary Hart Photography: Dark Sky Dreams, Lake Matheson, New Zealand

Dark Sky, Lake Matheson, New Zealand
Sony a7S II
Rokinon 24mm f/1.4
30 seconds
F/1.4
ISO 12800

(Jump to the bottom for a “how-to” and my starlight photography exposure recipe)

Five photographers followed bouncing headlamps through the chilly dark. Even in midday the trail through the dense rainforest surrounding Lake Matheson has a twilight feel; on a moonless winter night like this, the path becomes downright cave-like. Soon our footsteps were in sync, each tap broken by a beat of eerie silence. For me, the solitary experience at the front of the line was simultaneously serene and disconcerting, a feeling enhanced by occasional rustling and primal cries from the primitive world outside radius of my light.

I was midway through the second of back-to-back New Zealand Winter photo workshops. Just a couple of hours earlier the entire group had completed the nearly 2 1/2 mile loop in daylight. So striking was the sunset reflection of Mt. Tasman and Mt. Cook on that hike, that when we looked up after dinner and saw stars, a few of us hardcore night shooters couldn’t resist returning to the lake to photograph the Milky Way above the peaks.

Rather than hike all the way out there, we reasoned that we could satisfy our objective with a relatively short walk to Jetty Viewpoint, the closest view of the lake and mountains, less than a quarter of the way along the loop. Given the spur-of-the-moment nature of our adventure, I hadn’t done my usual (obsessive) plotting of the Milky Way’s position before bundling up and heading our to the lake. I knew only that it would be more or less vertical, in the general direction of the peaks.

What I hadn’t fully accounted for is how much higher in the sky as the Milky Way is in New Zealand. So unfortunately, by the time the five of us arrived at Jetty Viewpoint, we found the Milky Way was so high that capturing the bright galactic core and its reflection required a vertical composition. And it had rotated so far north that including the Milky Way and the peaks required a horizontal composition. After trying a few versions of those either/or compositions, we decided that since the reflection was the real star of the show, we may as well just continue another 20 minutes to the Lake Matheson’s best view point, Reflection Island.

The shear volume of stars in the pure New Zealand darkness is mesmerizing, but it’s disorienting to look up at night and not see a single familiar constellation, . Once we were settled in at Reflection Island, I spent the time during exposures wandering my gaze about the foreign sky.

A camera can “see” much better in the dark than we can, a capability that only continues to improve. For many years my night photography was limited by technology to moonlight only, but the low-light capability of the newest cameras has opened the door to a world that’s been invisible to the naked eye. Combining a modern camera that captures clean high ISO images with a fast lens not only enables moonless night photography, it pulls unseen wonders from the darkness.

I only use my Sony a7SII and Rokinon 24mm f/1.4 lens when photographing extreme dark skies, but when I do, I never cease to be blown away by what they “see.” Packing for four weeks in winter without exceeding the airline’s weight limits is difficult. But anticipating the opportunity to photograph the Southern Hemisphere night sky, I bit the bullet and added my dedicated night photography gear to my camera bag.  Every time an exposure completed, I couldn’t take my eyes off the image on my LCD. As saturated with stars as the sky appeared, each image revealed far more stars than were visible to my eyes, and the brightest stars stood out like an approaching locomotive.

A quick check of my astronomy app told me that the bright star burning a hole in the sky above the trees on the right is Achernar, well known Down Under but new to me. Slightly brighter than magnitiude .5 (the lower the number, the brighter the star), it’s the ninth brightest star in the night sky—the Achernar photons that landed on my sensor started their Earthward journey nearly 140 years ago.

The Magellanic Clouds (satellite galaxies gravitationally bound to the Milky Way but not visible in the Northern Hemisphere) that were faint fuzzy blurs to my eyes took on actual shapes. And while I couldn’t fit the mountains and both of the Magellanic Clouds in my frame, I was able to included the Small Magellanic Cloud in this image.

More exciting than the volume of stars revealed by my camera was the spectacular reflection it pulled from the seemingly black void of the lake’s surface. This ability to view beauty hidden from my eyes by darkness is the best part of night photography.

Starlight exposure made simple

Based on many years experience teaching starlight photography (not to be confused with moonlight photography), I’ve come up with what I think is the simplest approach to the most frequently asked night photography question: “What exposure settings should I use?”

The problem is, there isn’t a single set of ISO, f-stop, and shutter speed settings you can plug in for great results because the setting you use (and the results you get) depend on your equipment. Starlight photography is all about capturing light, the more the better. But as good as today’s camera technology is, successful night photography is still about making compromises. As you try to maximize the light reaching your sensor, you’ll need to manage these exposure compromises:

  • Shutter speed: Star motion is a function of the time the shutter is open, the focal length, and the direction your lens points—the faster the shutter speed, wider the lens, and closer to the poles (due north or south) you’re composed, the less star motion you’ll record. As much as we like pinpoint stars, I’ve always felt that getting enough light is more important than perfect pinpoints. Your compromise comes as you try to decide how much motion you can live with. My drop-dead shutter speed that I won’t exceed is 30 seconds.
  • F-stop: Sharpness and distortion, especially on the edges, becomes a concern when any lens is wide open. With some lenses it’s a livable problem, with others you’ll probably want to stop-down a stop or two. A starlight f-stop rule of thumb I follow is that (assuming a current camera with good high ISO capability) at f/4, the best you’ll be able to hope for is silhouettes; at f/2.8, you can probably get decent but dark landscape detail; making the scene significantly brighter than your eyes see (like this image) usually requires f/2 or faster. Given that, I like to shoot starlight at f/1.4 (hence my dedicated night lenses), and just live with slightly less than perfect quality in the corners.
  • ISO: Noise is the threshold that most limits our night efforts. If we didn’t have to deal with noise, we could push our ISO as far as necessary to eliminate star motion and lens flaws. High ISO noise varies a lot with the camera—some cameras struggle mightily beyond ISO 1600, others deliver very usable results at ISO 12800 or even higher. As a general rule, the larger the sensor, and the fewer the megapixels, the better the high ISO performance (larger, farther apart photosites mean more light gathering and less heat). So an APS-C sensor will usually yield cleaner high ISO images than a 4/3 sensor (Olympus and Panasonic), and a full frame sensor will yield cleaner high ISO images than an APS-C sensor. This is by no means an absolute—today’s 40+ megapixel sensors are much better at high ISOs than yesterday’s 12 megapixel sensors, and some of today’s high resolution sensors (for example, the Sony a7RIII) are far superior to contemporary sensors with lower resolution. My night camera is the 12 megapixel Sony a7SII. Regardless of the camera, and I can’t emphasize this too much, is to know your camera and how far you can push your ISO and still yield usable results. One more thing: because high ISO performance decreases significantly with shutter speed, base your high ISO evaluations on long shutter speeds, 15-30 seconds.

Understanding these compromises, you’re ready for my starlight-exposure-made-simple axiom: Give the scene as much light as you can without ruining the image. In other words, for the most light possible, use the longest shutter speed, widest aperture, and highest ISO that gives you results you can live with.

Taking this approach doesn’t mean that I don’t vary my exposure settings. Once I’ve settled on a composition, I use a variety exposure-setting combinations. Not only does this give me as many options as possible at processing time, it’s also an opportunity better understand my cameras’ and lenses’ limitations to learn how far I can push the exposure threshold next time.

New Zealand 2019

Workshop Schedule || Purchase Prints


A Starlight Gallery

Click an image for a closer look and slide show. Refresh the window to reorder the display.

 

 

 

 

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