Telescope calculator

App seems pretty useful and has lots of good data. I only had two issues. First, the help responses to the question marks is in Russian (?) and so no help at all explaining what the values are. Second, quite often switching values or screens results in the view through the eyepiece shrinking in size. The whole eyepiece shrinks, not just what is shown as being the view. Example, moon is almost filling the eyepiece, switch to another view or change a value, switch back to main screen and the eyepiece circle is now 1/4 size and the moon still almost fills it.

Very useful in planning viewing sessions, eyepieces and photography by providing excellent data on what to expect. As a beginner, I refer to it a lot but it must be equally useful for experienced astronomers, too.

The resolution of the image appears the same even if the objective lens is 10mm. I cannot acess the page where I can zoom in on galaxies if there is one and the app seems to have a very low fps.

A really useful app that makes it a lot simpler to understand the focal length of eyepieces and how they increase/decrease clarity and magnification. I'm a beginner in astronomy so having this app installed gives me all the support needed to improve my understanding of the scope I'm using. Thanks for putting this app out there for everyone 👌.

Aside from the full screen ads that pop up in the most inappropriate way, it is not accurate at all! Comparing the sizes it provides with what I see in my telescope, it is far by quite a bit.

A good start. I would love more objects and a bit of a friendlier interface. The button are small and clumsy but very interesting idea! I bought the pro version.

whoa! I've never encountered so many ads! There is a banner that's ok, but every few actions my phone audio switches to and goes full screen for a set number of seconds...for a social platform ad.

I installed the app and updated the information on the telescope and eyepiece quite simply. But there I have come to a screaming stop. No idea how to proceed and the controls are not intuitive.

Useful app tho i do wish for legacy scopes to be added.. I have a 10" meade starfinder dobsonian that predates the listings. Or at least let the user set the app for his own scope.

Excellent app, but after using it for a while, I am having a problem, as the tabs at the edge of the screen don't seem give any info about which model of scope they refer to. Just wonder if I am missing something? Thanks Rob_B.

I tried to use this app to simulate what i whil see with my telescope that i planed to buy. It gave fine simulation of planets but the deep sky objects where way overated. By that i meen that they looked like hubble throgh 10 inch telescope. In jeneral its a ok app for planets but not for deep sky. Also the simulation includes no light pollusion.

I looking for this app so badly. Really helpful if u want to test telescope before buying it. But I have some suggestion pls add different filters like lunar, eclipse or planetary filters. That would be great.

I liked the informations but false images are attached.. Good for kids but not enough good for students and grown ups.

Very practical tool for the amateur astronomer. It shows the size of an object in the field of view for a given optical setup.

Great aid .taught me what to expect from my new telescope and how to best use it. Made my viewing session more productive.

It is not user friendly and its icon's is very small, and its number changing is very difficult.

Meh. On a phone at least, the user interface is too small and awkward to use.

Not bad. Could you expand the max focal length? I use 2800mm, application stops at 2500mm. Thanks

brilliant app... need to add more targets as it's great for planning shots.

Very nice and helpful for beginners in Astronomy and telescopes.

Celestron 114LCM is not on the scope list. Any chances of it being added soon? thanks ...update! thanks for adding it.

Can you update app to allow even more bigger focal length and aparture. Eg 4000mm focal length and above

The app was amazing . And help a lot in amateur astronomy.

Useless - many ads - waste of time

probubly needs blue moon or other colors of moon.

It would be helpful to have information on how to navigate...

The loading in mobile take lot of time it comes to 99 and stop

Objects not to scale, far from it