What the Star Identifier does
You point your phone or camera at a clear night sky, get a shot full of bright dots, and then have no real way to know what you're looking at afterward. Sky-scanning apps need to be pointed at the live sky in real time, which doesn't help once you're back home scrolling through the photo you already took. This tool works from the photo itself: upload what you shot and it reads the pattern of visible stars to identify likely constellations, name prominent stars, flag planets if they're in frame, and note things like the Milky Way or star clusters when visible. You get probabilities rather than a single flat answer, since the same patch of sky can look similar across a few constellations depending on framing.
See a sample result
Input: A wide night sky photo showing a dense field of stars with a faint band of the Milky Way visible near the center, and the silhouette of a person standing on a hillside with a tree and mountain ridge along the bottom of the frame.
- Milky Way band (no isolated constellation)55%
- Cygnus region20%
- Sagittarius region15%
- Undetermined10%
Most likely: Northern Milky Way band, no single dominant constellation isolated
The faint, diffuse brightening running through the middle of the frame is consistent with the Milky Way's galactic plane rather than a cluster of unrelated bright stars, which fits the density and slight color variation visible across that band.
What's visible
- A dense star field consistent with a clear, low-light-pollution location, given how many faint stars are resolved
- A soft diagonal brightening through the frame's center, most consistent with a stretch of the Milky Way, though which part can't be pinned down without the date and viewing direction
- A brief streak in the lower left that's likely a meteor or satellite trail rather than a fixed star, based on its linear shape
- No single constellation's shape is isolated cleanly in this framing since the wide field captures multiple star groups at once
Viewing conditions The visible faintness of the Milky Way and high star density both suggest dark-sky conditions, away from significant city light pollution, which is when this kind of shot is possible at all.
How it works
- 1
Upload your night sky photo
A photo taken with a longer exposure or a steady phone camera, where individual stars are visible as distinct points rather than a blurred smear, gives the clearest result.
- 2
The AI reads the star pattern
It looks at the arrangement, relative brightness, and spacing of visible points of light to match them against known constellations and prominent named stars.
- 3
Get a ranked identification, not just one guess
Since partial views of the sky can resemble more than one constellation, you get a most-likely match along with runner-up possibilities and how confident each one is.
- 4
Read the extra context
Where possible, the result also notes visible planets, the Milky Way, star clusters or nebulae, and general viewing conditions like light pollution in your shot.
Use cases
Figuring out what you photographed after a camping trip
You took a night sky shot on a trip and want to know what's actually in it once you're home with better internet and time to look, instead of guessing from memory.
Confirming a planet sighting
A bright, non-twinkling point in your photo might be a planet rather than a star. Upload the shot to get a read on what it likely is based on position and brightness.
Learning constellations from your own photos
Rather than memorizing a star chart cold, use your own captured shots as the starting point and let identification build your familiarity with the sky over time.
Checking whether you caught the Milky Way
The faint band of the Milky Way isn't always obvious to the naked eye but often shows up in a longer-exposure photo. Confirm whether that's what you captured.
Getting feedback to improve your next shot
Notes on viewing conditions and star visibility in your photo can point to what to change, like finding a darker location or adjusting exposure, next time out.
Tips for better results
- Use a photo taken with a tripod or steady surface, since camera shake blurs stars into streaks that are harder to match.
- A longer exposure captures fainter stars and the Milky Way more clearly than a quick handheld shot.
- Shoot away from city lights when possible. Light pollution washes out all but the brightest stars.
- Include a wide enough field of view to capture a recognizable pattern rather than just a handful of isolated points.
- Type the date, time, rough location, and the direction you were facing into the details box, since that context narrows down ambiguous matches a lot.
Limitations
This tool works from what's visible in your photo, and matching star patterns has real limits: a narrow crop, heavy light pollution, or motion blur can all make identification genuinely uncertain, which is why results come with probabilities rather than one guaranteed answer. It's built for stargazing curiosity and photo organization, not for navigation, astronomical research, or any application where precision matters.
Frequently asked questions
Can it identify stars from a phone photo, or do I need a real camera?
A phone photo can work if it captures individual stars as distinct points, though a dedicated camera with a longer exposure will generally resolve fainter stars and give a clearer match.
Why did it give me more than one possible constellation?
Star fields can look similar across different constellations, especially in a cropped or wide-angle shot, so the tool ranks the most likely matches by confidence instead of forcing one answer.
Can it tell me if I photographed a planet instead of a star?
It can flag a bright point that looks more like a planet than a star. Planets move, though, so a photo alone can't confirm one; add the date, time, and location in the details box and the answer gets much more reliable.
Does it work on photos with light pollution or clouds?
It will still attempt an identification, but fewer visible stars and washed-out contrast from light pollution or haze make the match less confident.
Can it identify the Milky Way in my photo?
Yes, when the characteristic diffuse band is visible, the tool will note it separately from individual star or constellation identification.
Is this the same as a live sky map app?
No, sky map apps point at the live sky in real time using your phone's sensors. This tool works after the fact, from a photo you've already taken.
How do I get a better night sky photo next time?
Use a tripod, get away from city lights, and use as long an exposure as your camera or phone night mode allows, since sharper, darker shots give clearer identification.
Plans start at $9 a month. See pricing