Adam - That's my problem - I couldn't find it with my admittedly cursory review of all of the lessons in both your Photoshop and CCD Stacck video series. Can you point me to the CCD Stack section that you illustrated it in? BTW, subscribing to you…
Adam - you truly are always part of the solution and never part of the problem. Two questions
1. I do not drizzle - will pixel math still work - if not does the first approach handle it then.
2. If I apply either technique, must I do it to all dark…
No because I went back to a Sept imaging session of M31, did the same precise process and got the exact weighting factor for a 15 second exposure that should have occurred. As stated in the video, the universe works as it should! I am going to tra…