Learning never exhausts the mind
Home >  Astronomy > Astrophotography > Telescope Calculator

Last Updated by

What's the optimum magnification for my instrument? Is the field of view of a given eyepiece too small to see all of the Moon? Is there a minimum magnification for my scope? What sort of limiting magnitude should I expect with an instrument of a given aperture? You can find answers to all these questions and many more besides with this interactive telescope calculator.
Telescope
aperture		Telescope
focal length		Eyepiece
focal length		Eyepiece
apparent field
Here is an analysis of your telescope's performance using the parameters selected above:
Telescope aperture (d) and focal length (F)

Telescope aperture (d) and focal length (F)

Telescope eyepiece focal length (25mm & 10mm) and apparent field (52)

Telescope eyepiece focal length (25mm & 10mm) and apparent field (52)

Leave a Reply

Fields marked with * are mandatory.

We respect your privacy, and will not make your email public. Hashed email address may be checked against Gravatar service to retrieve avatars. This site uses Akismet to reduce spam. Learn how your comment data is processed.

You May Also Like
Using a Telescope Finderscope

Using a Telescope Finderscope
By Tim Trott

How to Use The Setting Circles on Your Telescope

How to Use The Setting Circles on Your Telescope
By Tim Trott

All About Telescope Eyepieces

All About Telescope Eyepieces
By Tim Trott

Navigation ×