SkyPortal

Celestron Telescope Controller and Planetarium application

App info

Version :

4.0.0.17

Category :

Education

Update :

October 29, 2025

Installs :

1,121,481

Developer :

Celestron

Requires Android :

Android 4.4+

Content Rating :

Everyone

Get it on :

Download APK

App description

Android App Analysis and Review: SkyPortal, Developed by Celestron. Listed in Education Category. Current Version Is 4.0.0.17, Updated On 29/10/2025 . According to users reviews on Google Play: SkyPortal. Achieved Over 1 million Installs. SkyPortal Currently Has 6 thousand Reviews, Average Rating 3.5 Stars

Celestron® SkyPortal™
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Celestron’s newest planetarium app is an astronomy suite that redefines how you experience the night sky. Explore the Solar System, 120,000 stars, over 200 star clusters, nebulae, galaxies, and dozens of asteroids, comets, and satellites—including the ISS. SkyPortal includes everything you need to experience the night sky in an exciting new way. When connected to a compatible Celestron WiFi telescope, you can automatically point the telescope to any object in the database and view it with great detail.

Planetarium Features
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Simulate the night sky and plan your observing session with a custom list of tonight’s best objects based on your exact time and location. Look ahead to see when Jupiter’s Great Red Spot will be visible, animate transits, eclipses, and other celestial events. View hundreds of photos or listen to more than four hours of audio narration to enhance your stargazing experience.

Simulate the night sky from anywhere on planet Earth, up to 100 years in the past or future.
Compass Mode (with compatible devices): Hold your device up to the sky for a real-time synchronized display of celestial objects – from star names, constellations, planets, to nebulae and galaxies.
Control compatible Celestron WiFi telescopes with sophisticated mount modeling for quick and accurate go-to alignment.
Animate transits, conjunctions, eclipses, and other events with SkyPortal's Time controls.
Explore the sky with Night Vision turned on, and preserve your eyesight after dark.
Learn the history, mythology, and science of the heavens with SkyPortal's hundreds of object descriptions.
Browse hundreds of astronomical photographs and NASA spacecraft images
Access over 4 hours of audio commentary to guide you through the best celestial objects.

Computerized Telescope Control
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Pair your device to your compatible Celestron WiFi telescope, align with Celestron’s patented SkyAlign™ technology, and you’re ready to explore! Identify objects instantly. Tap any object and your telescope automatically centers it in the eyepiece.

SkyPortal’s telescope alignment incorporates advanced mount modeling, providing better pointing accuracy than other telescope systems which rely on a dedicated computer.

SkyPortal has localization support for French, Italian, German, and Spanish.

We are currently offering version 4.0.0.17. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.

We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.

It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.

What's New

Version 4 introduces a new look, and enhanced object databases!

Rate and review on Google Play store

3.5

5,673 total

5 46.0

4 14.0

3 5.0

2 10.0

1 25.0

Total number of ratings

Total number of active users rated for: SkyPortal

Total number of installs (*estimated)

Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.

Recent Comments

Kimomo

The only reason it is not 5 stars is because the ap is not accurate according to my location. I even manually put in my current latitude and longitude coordinates and elevation, and my app is still slightly off. this is causing a discrepancy in my telescope alignment with the stars. I tried playing with it to reverse polar and other settings, and I even tried changing the time and still had the same issue. This is the only drawback to this app for me. Does anyone have any pointers or tips?

Paul S

Been using this app since it was introduced and would give it 5 stars up until now. Just downloaded the Oct '25 update. Cannot display the all-important toolbar without which the usefulness is seriously diminished. What happened??

Norm

Keyboard STILL doesn't work in night mode, there's an overlay of red and it can't be pressed. Connection is flakey (Astro-fi..not the one with weak signal!), even when the phone is definitely and solidly connected to the mount the app will often not connect. It will also drop connection often, which causes the app to crash, having your device always on helps. Otherwise it's a great app, when it's working it's fun and easy to use but the connection issues are annoying.

ali zia

I like how I can use skyportal with my nexstar se. Lately I have been unable to calibrate the scope when I'm connected and its finding the planets I tell the app to go too. In the beginning I would just calibrate and after that, I didnt have to manually find anything but now the calibration doesn't work and throws a plate error. Also, the minute you go out of the app or the screen turns off, its game over and you have to start over. So much potential with this app celestron. Get it together!

Dorothy Frank

This app has worked great for years, until the December update. Now, it is worthless. When I open it, it automatically starts a download of files, which stalls. Then tries to install the downloaded files, and stalls. I've uninstalled it twice and reinstalled it, same thing. It went from being my go to sky app to needing to be uninstalled and not reinstalled. Update. Tried on my new galaxy phone. It won't even open. Shows a nanosecond of opening screen and crashes. I loved this app! 😭

rooibos

Overall, a very useful tool which I use every time I go out observing. However, it would be nice if you could hide objects that are currently not visible or low on the sky. It doesn't make sense to have objects that are always below the horizon show up in the "Tonight's best" list. Also, many deep sky objects are not visible or selectable on the map and only show up in the catalogs. This makes it hard to find deep sky objects in a certain part of the sky.

Tony Caliva

Worked great, but since the last update the app won't connect to the module. I've tried multiple devices, all which connect to the module's wifi, and keep getting same error from the app: "Skyportal can make a wireless connection to the scope, but the scope is not responding." I also get this error when I'm not connected to the module, which further makes me think it's a problem with the app. I've tried restarting the telescope multiple times, and uninstalled and reinstalled the app.

Jeremiah Johnson

Annoying is the most accurate way to describe this app. It has a fairly nice layout and a lot of potential. However, the compass setting when viewing the sky does not accurately move with the sky. It will be accurate for wherever you start at, but will not move across the sky as you move your phone. If you're looking for a similar app try stellarium. I dropped them for sky portal (got a sky portal telescope for Christmas). I wish I never had