How to Photograph the Night Sky With Your Phone

Ten years ago, pointing a phone at the night sky produced a black rectangle with some noise in it. Today, recent phones from Apple, Google, and Samsung can photograph the Milky Way, catch auroras the naked eye barely registers, and turn the ISS into a streak of light across the frame. The technology is computational: the phone takes many exposures and merges them. But all of it depends on one thing the phone can't do for you, which is staying perfectly still.

The Most Important Accessory

A phone tripod. Night photography means exposures lasting seconds, sometimes half a minute, and any movement turns stars into smudges. Many phones only unlock their longest night-mode exposures when they detect they're on a stable surface, so a tripod doesn't just make photos sharper, it makes better settings available.

A simple, inexpensive phone tripod with a clamp is enough. If you don't have one, wedge the phone against a wall, a fence post, or a bag of rice. Then set a 3-second timer so the act of tapping the shutter doesn't shake the shot.

Use Night Mode First

Before touching any manual settings, try your phone's built-in night mode. On iPhones it switches on automatically in low light and shows an exposure time in seconds at the top of the screen. Google Pixels have Night Sight and an Astrophotography mode that activates on a tripod. Samsung Galaxy phones have Night mode, plus manual controls in Pro mode.

Once the phone is steady, push the exposure time to the maximum the phone offers. Then tap the screen to focus on a bright star or the Moon, or, if focus wanders, on a distant light.

What to Photograph

The Moon. The easiest target, and the one most people get wrong. The Moon is extremely bright, so night mode makes it a white blob. Instead, use the normal camera, zoom in, then tap the Moon and drag the exposure slider down until you can see craters. Shoot near the edge between light and shadow, where craters cast shadows and look three-dimensional.

Star fields and the Milky Way. You need a properly dark site, away from towns, and no Moon in the sky. With the phone on a tripod in night or astro mode at its longest exposure, a modern phone can pick up the band of the Milky Way that you can barely see with your eyes. Including a tree or rooftop in the foreground makes the shot far more interesting.

Satellites and the ISS. Here, long exposure is your friend. Point the phone where the satellite will cross, start a long exposure just before it arrives, and its path is recorded as a bright line. Our satellite-spotting guide covers when to look.

Auroras. Phones are surprisingly good here, often better than the eye. A faint, greyish glow on the horizon can come out green and pink on a phone screen. Use night mode, but keep exposures shorter, around 2 to 5 seconds when the aurora is moving fast, so its structure doesn't blur. The aurora guide explains when to try.

Meteors. The hardest, because you can't predict where or when they'll appear. The best approach is to point the phone at a wide patch of sky and take many long exposures back to back, using an app or setting that shoots continuously, then hope one catches a streak. It takes patience, but a meteor photo is a genuine trophy.

Settings If You Want More Control

Pro or manual modes, available built in on many Android phones and through third-party apps on iPhone, let you set things yourself. A starting point for stars:

One rule of thumb: on a wide lens, exposures longer than about 20 to 30 seconds start to show the stars trailing as Earth rotates. That can be a deliberate effect, but if you want pinpoint stars, keep exposures shorter.

Editing

Almost every great night-sky photo is edited. The built-in editors on iOS and Android, or free apps like Snapseed and Lightroom Mobile, are enough. Try a little more contrast, lower highlights so bright stars don't blow out, a touch of noise reduction, and a cooler colour balance. Go easy: the goal is to show what was there, not invent a sky that wasn't.

Common Mistakes

Using the flash. It does nothing at astronomical distances except light up the foreground and ruin the shot. Turn it off.

Using digital zoom on stars. Zooming in on a star field mostly magnifies noise. Shoot wide and crop later if you need to.

Giving up after one try. Night photography is a skill. Your first attempts will be soft or noisy. By the third clear night you'll have the settings figured out, and then the results get very good, very fast.

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