Quote:
Originally Posted by Lee
I've certainly seen coma, I don't think this is though - I've attached a strecthed/enlarged crop from a frame showing what I mean....
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If you move your corrector too far from your camera you'll get the inverted seagull/pacman shapes. If it's too close you'll get flaring. If you have some kind of misalignment then astigmatism will give you little cross shapes on the edge of your field. So all aberrations compound to give you chonky stars. First step is to get your system aligned, then you can tweak your corrector at focus to fix your field.