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Works great to achieve focus for astrophotography
Works great to achieve focus for astrophotography. Simple to use. Fits my Orion 8" Newtonian Astrograph perfectly; viewing focus on a Canon t3i 600d.
Inexpensive and easy to use
This is an inexpensive product and it does the job.
Bahtinov Focus Masks...
• In 2008 an amateur telescope maker and astronomer ppublished an ingenious new way to easily focus your DSLR, webcam or CCD camera for taking astrophotos. The method is simple, very intuitive and the device has universally been named after the inventor. The Bahtinov Mask.
• Farpoint manufactures this *LIFESAVING* astrophotography tool out of virtually indestructable ABS plastic and comes in two major types and in a range of sizes.
• One mask is a general purpose mask designed to fit refractors and newtonian telescope. The other mask is designed to fit Schmidt Cassegrain telescopes. Both types of mask are available in a range of sizes to cover your needs.