[troypiggo (Troy)]

Most of my experience is with an ED80, and I leave the hood/dewshield on it all the time. I've been putting the Baht mask on the front of the dewshield to date. The diff spike pattern is noticable, but have to zoom in to see it clearly.

For the first time at Astrofest I imaged with my C8, and put a mask on it right at the lens with dewshield off. The diff spikes were massive, very easy and clear to see.

Wondering if this is simply a function of the C8 collecting more light, or rather because I put the mask right at the lens rather than some distance in front of it.

It only occurred to me to ask this since I got back so haven't had a chance to test it myself. Plus, the ED80 hood is a little loose and I have it duct taped in place so removing it every time would require a slightly different approach.