Bahtinov Focus mask for Celestron 9.25" SCT with Fastar or Hyperstar Ready, FP415H

if you're planning on using a dslr and camera lens for your astrophotography whether that's wide-angle milky way stuff or telephoto deep space work one of the problems you might encounter is that you have a hard time getting the stars perfectly sharp this can be especially true if your eyesight isn't the best or your camera doesn't have a flip out screen or the live view system isn't great there's a lot of factors that go into this but one thing that can really help you out is a simple batnov mask these are traditionally used with telescopes but thankfully there's now an option for dslr shooters as well and they're going to work on virtually any lens you might have so i want to thank case filters they actually reached out to me and said hey we like your stuff and do you want to check out some of these filters and i've been wanting to do this video for a couple of months now so that kind