I'm waiting for my field flattener for my WO Z61 and the supplier says it will still be a month maybe... I've been shooting and processing (in AstroPixel) some sessions without the flattener and wondering if the bloated stars are negatively effecting the final result. I know that M51 is a tight shot for this scope but galaxies are so cool... I'm manually guiding and just trying to get a solid polar alignment, and focus - then hunting, finding, centering, as well as possible. Then setting the intervalometer and letting it run while I gaze with binocs and naked eye.
Attached is an image from APP using default settings. 140 x 60second subs (with 26 darks and 6 flats) from my bortle 4 backyard. The cropped image is 'decent' (for me) after some tweaking in Lightroom.
I'm just wondering if I did a batch crop, if the final result may be better.