NGC 891 via gradiant filter

[nytecam]

Tried for galaxy NGC 891 low down in Andromeda last night. Bad move! Transparency was poor with NGC 891 deep in London light dome and maybe the scope needed a tweak to even out the field illumination and no flat available as the correct way to remove this defect.

This morning created an artificial gradiant filter with moderate success [below] in recovering a reasonable image!

A = raw image contrast stretched

B = A + 75% Gaussian Blur via PS to remove star images

C = A - B to smooth out image gradiant - actually used B[=negative] +A which does same thing!

D = C cropped full size

Hope my exercise was of interest - still have the dust bunnies!

[Paul81]

Despite the low altitude and conditions that is a great shot of NGC 891 - a great piece of processing work! Well done!