Guiding was good at an average 1.1 arcsec total rms error in PHD2 (good for me).
Shot 240 second lights with my
I am happy with the image. Definitely pleasant enough and possibly on the bluish side, but a big improvement over my first time imaging M13.
There are some things with the image I would like to improve on next time and hopefully some of you experienced imagers might be able to help with some suggestions.
First off, I somewhat blew out the core. Apparently, 240 seconds at iso 400 is too much exposure. The histogram peaks in
The other thing is that some of the stars in the corners are slightly non- homogeneous in color. I did check the camera and there is a significant amount of flexure at the t-ring possibly causing the camera sensor not being perfectly perpendicular to the imaging train. Possibly a contributor to the corner star color?
I will tell you though, that this is the flattest image that this rig has ever produced by far! I feel like the
If you have any suggestions please comment and thanks for looking!