Quote:
Originally Posted by rustigsmed
thanks guys,
Ray, I guess good flats would take care of the curvature?
Russ
|
Flats will correct for vignetting, but field curvature will give out-of-focus away from the centre of the fofv. I reckon that the best approach would be to try a Barlow and see what you get - work out what is important from that.
I don't have any feel for how to combine a Barlow and coma corrector - or even if a CC will be necessary over the fields of view that you will be using. Maybe just take JJJ's advice and crop.