Mount your smartphone on a telescope or camera. AstroHelm continuously plate-solves the sky to guide you directly to galaxies, nebulae, planets, and stars—or precisely frame them for photography. No GoTo mount or proprietary hardware required.
New to astronomy?
See something incredible tonight
A telescope opens up the wonders of the night sky — but getting started can be surprisingly difficult. What should you look at? How do you find it? What if you don't know the constellations?
Personalized guide to the night sky
AstroHelm comes with a curated list of great objects to observe and highlights the best ones for your location and time. From bright planets to faint galaxies and nebulae, AstroHelm helps you find what’s worth seeing.
Pick, follow, and discover
Choose an object and AstroHelm shows you which way to move your telescope. Your phone’s camera recognizes the stars overhead and continuously determines where your telescope is pointing with high precision, ensuring the object lands right in your eyepiece.
No astronomy knowledge required
No need to learn star hopping or memorize constellations. And unlike a GoTo mount, there’s no complicated multi-star alignment. Better yet, AstroHelm can find its way even under heavily light-polluted skies.
Live Plate Solving
Observatory-Grade Precision in Your Pocket
Traditional astronomy apps rely on your phone's compass and gyroscope, which drifts and lags. AstroHelm takes a picture of the night sky and matches it against a massive database of stars, so it always knows where you are pointing.
- Accurate up to within 10 arcseconds (1/360 of a degree)
- Computes coordinates in less than a second
- Immune to magnetic field interference
- Works even in the most light polluted cities
Features
Everything you need under the stars
Casual stargazers, serious amateur astronomers, and aspiring astrophotographers. AstroHelm is for everyone.
Standard planetarium apps have pointing errors of several degrees, putting objects out of view. AstroHelm matches real stars in the sky to pinpoint your exact coordinates with sub-arcminute accuracy.
The best dark-sky sites don't have Internet access. AstroHelm’s plate solving engine runs entirely on device. No internet connection required, and your camera images stay on your phone.
AstroHelm works with equipment you already have, whether it's a dobsonian, a DIY telescope, or a telephoto lens. No lock-in. No proprietary hardware.
Find Tonight’s Highlights
Not sure what to observe? Discover rewarding targets for your location and tonight’s sky, taking altitude, twilight, and moonlight into consideration.
Keep the Sky in Your Hands
Leave one device on your telescope and guide it from another in your hand, so you can explore the sky without reaching for the mounted screen.
Connect Your Favorite Apps
Works with astronomy software you already use, including Stellarium and SkySafari. AstroHelm acts as a telescope through ASCOM Alpaca, INDI, or LX200.
What Astronomers Are Saying
“After that, whatever I called for was in the field of view, even when I was using a 5mm eyepiece.”
“I’m really impressed… guided me almost dead on to the double cluster when asked.”
“This app has been so good that I sold my other push-to and GoTo hardware.”
Pricing
Free to use. No subscription.
Start observing for free. When you want more, unlock more of the sky and advanced features with a one-time purchase.
Included for free
- On-device plate solving
- Push-to navigation
- The Moon and planets
- A selection of tonight’s best targets
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Explore the complete Messier and Caldwell catalogs, plus all Bayer or Flamsteed designated stars.
Upgrade to Pro anytime — just pay the difference.
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Everything in Plus, full NGC and IC catalogs, remote control from another iPhone or iPad, and connections to ASCOM Alpaca, INDI, LX200 or Stellarium.
Discover something new
Take AstroHelm under the stars and let it guide you to your next object
Free to use. No subscription.