Pacman Nebula (RGB) (Linda)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281 · Sh2-184

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Pacman Nebula (RGB)

Link: https://lindasastronomyadventures.space/2020/11/13/pacman-nebula/

Powered byPixInsight

Pacman Nebula (RGB)

Link: https://lindasastronomyadventures.space/2020/11/13/pacman-nebula/

Although this is listed as "own remote observatory" it's not actually mine. I was invited as a guest into someone else's own remote observatory and while my equipment is there, this was taken with his (very nice) equipment.

This is the Pacman Nebula in RGB and was interesting to process. First, it was my first image with a CCD camera and it was interesting to see how processing CCD data differed from my own ASI1600 CMOS camera. On the plus side, the noise was smoother and better behaved. On the downside, the higher read noise made for longer exposures. Though on the plus side it was a 16-bit camera compared to my 12-bit camera. On the whole, it was pretty easy data to work with.

The image scale was just over 1"/pixel and quite a bit finer than on my rig. In the end I kept processing fairly simple:

On each R, G and B master:

Mure Denise

DBE

For the combined RGB master:

channel combination

PCC

Histogram Transformation

LHE (using a range mask)

Curves for saturation and contrast

Adv Sharpening script

Adam Block's modified star de-emphasis using starnet++

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Status	Advanced success
Started	...
Astrometry.net job	4002347
PixInsight job	G7RKCV0DKQ5W0FN39TSLQ4HXKGCPD3H3
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h52m42s.68
RA (top/left)	00h56m28s.35
RA (top/right)	00h48m50s.70
RA (bottom/right)	00h49m02s.24
RA (bottom/left)	00h56m29s.31

Dec (center)	+56°37′30″.6
Dec (top/left)	+57°04′38″.7
Dec (top/right)	+57°03′36″.8
Dec (bottom/right)	+56°09′57″.1
Dec (bottom/left)	+56°10′58″.0

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Pacman Nebula (RGB)

Pacman Nebula (RGB)

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Pacman Nebula (RGB)

Pacman Nebula (RGB)

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