Quote:
Originally Posted by alpal
Hi Peter,
that's a superb picture at high res.
"vignetting is minimal?"
I dunno.
It seems to be a fair bit darker in all of the 4 corners.
I don't know if it's real or not.
Did you use flat frames in the stack?
cheers
Allan
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Yes.
Flats are mandatory in my neck of the woods....as per the attached sky flat...which shows: stars, dust motes, some vignetting...but hardly a tragedy
When calibrated, the h-alpha sky really is darker further from the nebula
