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Telescope calculator


Steem

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A few years ago I made a telescope calculator for myself and eventually it got used by a couple of friends quite often. Recently I updated the calculator and some people suggested I should make an English version of it. So I did. Please let me know what you think and if you see yourself using it. Also, let me know of you encounter bugs or wrong translations!

You can visit the calculator at http://www.nachtwachters.nl/telescope-calculator/

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  • 4 years later...

Steem, I think I found a bug in it regarding barlow magnification.

See the image with the following setup:

http://www.nachtwachters.nl/telescoop-calculator/?diameter=127&focallength=1900&units=undefined&eyepiece_focallength=40&afov=46&barlow=2

With barlow=x1 the Moon diameter is half of the apparent fov. When barlow=x2 the moon diameter is twice the size of the fov. There is some quadratic power going on. Where as it should be linear I think.

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