Quote:
Originally Posted by peeb61
Folks,
As mentioned before in a previous post, my polar alignment was out and Polemaster arrives today.
Doing a couple of test runs last night I ended up with this image of M20, just a short exposure set with no bias, darks or flats yet and a quick process in Photoshop.
I'm thinking the bright area is street lights? Not apparent in the original subs.
Paul
Many thanks in advance.
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Anything is possible, and it's odd that it may not have shown up (
or possibly may have not shown up enough) in your subs, but there's a whole lot of other stuff going around there that may contribute. Refer attached composite image of your M20 image rotated and resized to suit a comparison with another wider field image (grabbed from google images with attribution) of M8 and M20 which shows similar
but not identical light brownish nebulosity/gas/light between M8 and M20.
Who knows? If you suspect extraneous light try another location away from potential sources or a long "lens hood"
Best
JA