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Bahtinov Mask for Refractor


Aeseir

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hi guys,

I'm wondering if anyone is aware of bahtinov masks for 80mm Short Tube for orion (http://www.telescope.com/Telescopes/Refractor-Telescopes/Refractor-Optical-Tube-Assemblies/Orion-ShortTube-80-Refractor-Telescope-Optical-Tube-Assembly/pc/1/c/10/sc/346/p/9948.uts)?

Looking to do some wider shots with it for a change of pace.

I know about the mask generator that astrojargon has but i don't know how to use it properly or how to print it off to be proper size (they either too big or too small).

Any advice anyone can provide would be appreciated.

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If you simply put in the aparture (+20mm for the "rim") and your focal length the program will produce a full sized print out for you.  A Bhatinov doesn't have to be "perfect" and will work within quite a wide range of parameters so even if it is a bit small/large it will still be OK to use successfully.

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