Howdy Folks, another puzzling one for me as I continue on my journey. First, here is my rig setup.
Telescope: AP130 EDFS f/6
Reducer/Flattener: Tele Vue RAD-1074
Auto Focuser: ZWO EAF
Mount: Celestron CGX
Imaging Camera: ASI2600MC-Pro
Guide Camera: ASI120MM Mini
Guide Scope: Svbony 9x50
Hub: Pegasus Astro
Darks and Flats
I have this weird blue line appearing in my horse head nebula subs. The line is not in any of the subs for other targets. I imaged M81, Iris Nebula, Rosette in the same session. I even processed my M81 images to completion and no line is present in the stacked result. I am including a sub full scale and zoomed in.
Something specific to the Horsehead? Must be something in the imaging train?