Originally Posted by naskies
Very nice! I've yet to try out my RC8 on DSOs using my full-frame SLR. Are you happy with the Astrotech flattener?
The extreme corners have distorted stars, Bottom Left and Right attached. I'm not sure if this is collimation, focuser or flattener or all of the above. I'm not brave enough to fiddle with the mirrors until I know the focuser is square but I would assume if the stars are distorted, they should be equally distorted around the whole image. Another focuser won't be happening till after tax time though, I need to inject some cash into cutting my tax bill
I added an image without flats and exaggerated to show the image circle.