Telescope Back Focus: The Ultimate Guide [TAIC Short]

What is telescope back focus...why is it important...and how do you set it correctly?

Having the proper back focus between your telescope and camera is critical to successful astro imaging. Although you hear the term “back focus” a lot in astrophotography, people use it to mean different things in different contexts. This can be confusing and frustrating. This video will help you make sense of it all.

TAIC host Alex McConahay walks us through an in-depth back focus tutorial, from the basic physics of telescope optics to the dizzying array of spacers, field flatteners, and focal reducers. He ends with practical advice on how to dial in the back focus for your imaging rig.

Full episode from June 5, 2022:    • 2022-06-05 | TAIC 8th Anniversary Spe...  

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