Farpoint Tri-Bahtinov Mask — Celestron 8" SCT (Hyperstar/Fastar)

Must have

Obtaining perfect focus seems obvious. Turn the knob for the sharpest image but the earth's atmosphere makes it difficult and a celestial target is no longer a static image. I can get close by eye but not perfect. That's what I learned about the Tri-Bahtinov mask and it helps with collimation of reflectors. Get one, you won't regret it!

Perfect fit for Carbonstar RC-8

This was a perfect fit for my Apertura Carbonstar Ritchey Chretien 8" telescope.

Helpful for getting excellent collimation

This mask is all you need to get spot on sct collimation. Very quick, easy and repeatable.