Thursday, July 14, 2016

glorious NGC 6781

Processed the big planetary nebula NGC 6781 in RGB using the latest data acquired on July 6.

planetary nebula NGC 6781 in colour

I'm pleased—while I didn't do anything (yet) with the luminance, hydrogen, or oxygen data. Don't know what to do!

In particular, this represents the first time I applied anti-vignetting techniques to one of the colour channels. The red image had a bad gradient.

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