Cosmic Comma - NGC 772 in LRGB (Marcel Noordman)

Cosmic Comma - NGC 772 in LRGB

Description (from Wikipedia)
At around 200,000 light years in diameter, NGC 772 is somewhat larger than the Milky Way Galaxy,[3] and is surrounded by several satellite galaxies – including the dwarf elliptical, NGC 770 – whose tidal forces on the larger galaxy have likely caused the emergence of a single elongated outer spiral arm that is much more developed and stronger than the others arms. Halton Arp includes NGC 772 in his Atlas of Peculiar Galaxies as Arp 78, where it is described as a "Spiral galaxy with a small high-surface brightness companion".Three supernovae have been observed in NGC 772. SN 2003hl (Type II, mag. 16.5)[4] was discovered on 20 August 2003. SN 2003iq (Type II, mag. 16.4)[5] was discovered on 8 October 2003.[6] SN 2022qze (type IIP, mag. 19.9) was discovered on 8 August 2022.[7]NGC 772 probably has a H II nucleus, but it may be a transitional object.[8]

Personal Note
Nice irregular galaxy. I wanted to show the contract of the dust bands and the outer rings of star streams. Lot of stuff going on in this field of view. The larger picture showed a lot of additional nebulosity (IFN) but it was too difficult to optimize for both the galaxy details and the IFN, so I cropped the main picture. NGC 772 and 770 are described in "Annals of the Deep Sky, volume 2). Kanipe and Webb talk about the relation between 772 and 770 and with Quasars that seem to be much farther away. I might add the full frame and maybe Ha at a later stage.

Processing
Chrominance: WBPP, autocrop, Graxpert, Linear Fit, RGB combination, Background Neutralisation, Photometric ColorCalibration, Deconvolution, Maskstretch, ArcsinhStretch, denoise, Curves
Luminance: WBPP with 2xdrizzle, DBE, Deconvolution, denoise, Histogram Transformation, Curves, denoise, HDRM MT, UnsharpMask, LocalHistogramTransformation

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Basic failed
Started	...
Astrometry.net job	8918771
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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