I am trying to narrow down what is causing some issues with the curvature of my field at the edges of photos, so I popped 7 images from the same night and target into CCDInspector and this is what it resulted in. For reference, I am using a D5300 with my C80ED. The images were guided and were 360s at ISO-800.
The thing that immediately jumps out to me is the curvature. I know its a refractor, but do I really have that extreme of field curvature? What are the other metrics given in the 2D plot?
I also added 3 subs from a different target on the same night. Still 360s and ISO-800.
Why are these so drastically different?
Edited by Keudn, 20 November 2019 - 10:51 PM.