Quote:
Originally Posted by gregbradley
Very nice image. Your polar alignment was a bit off though and you have a bit of rotation plus a bit of sag there at the bottom right. Minor though and does not detract from a wonderful image.
Greg.
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Good points Greg. The sag (or perhaps focuser not square-on) is something that has been bugging me for a while. The other problem is that I had trouble finding a guide star (with Orion SSAG in off-axis guider mode) so the original image is way off centre frame and had to be cropped, so we are looking at the off=axis region here.