Sunday, March 22, 2020

imaged NGC 3628 again (Halifax)

With BGO, I imaged NGC 3628 again. First imaged this hamburger on 24 Apr '17. The Leo galaxy seems to have very low surface brightness and the first image seemed to lack contrast.

galaxy NGC 3628 in luminance

Luminance only, 60 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; east is left.

I was able to pump up the core this time but there's a nasty gradient. Overall, I think it's better.


Processed in colour (poorly) on 7 Aug '22 and with better results on 8 Aug '22.

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