NGC3718, NGC3729, and Hickson Compact Group 56 (Doug Gray)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3718 · NGC 3729

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NGC3718, NGC3729, and Hickson Compact Group 56

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NGC3718, NGC3729, and Hickson Compact Group 56

NGC3718 and its companion galaxy NGC3729 along with Hickson Compact Group of Galaxies (HCG) 56.

From Wikipedia: "NGC 3718, also called Arp 214, is a galaxy located approximately 52 million light years from Earth in the constellation Ursa Major. It is either a lenticular or spiral galaxy. NGC 3718 has a warped, s-shape. This may be due to gravitational interaction between it and NGC 3729, another spiral galaxy located 150,000 light-years away."

HCG 56 (aka ARP 232) are the 5 interacting galaxies above NGC3718. These are quite small for amateur scopes. Would love to see a closeup with the GWST.

I spent a lot of time experimenting with the post-processing on this one, backtracking multiple times. I had previously applied the luminance layer in Siril, but have found it better to process it separately, particularly when doing RGB in bin4 and L in bin2. If the final color palette looks odd, it's probably related to my being R/G color blind.

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Status	Advanced success
Started	...
Astrometry.net job	6064941
PixInsight job	EAM9PYD2I0W5PZ9RZVM0X26I1XQ56G9U
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h33m09s.657
RA (top/left)	11h30m39s.617
RA (top/right)	11h35m43s.180
RA (bottom/right)	11h35m41s.919
RA (bottom/left)	11h30m33s.982

Dec (center)	+53°04′12″.74
Dec (top/left)	+52°44′30″.24
Dec (top/right)	+52°45′07″.51
Dec (bottom/right)	+53°23′42″.76
Dec (bottom/left)	+53°23′04″.89

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NGC3718, NGC3729, and Hickson Compact Group 56

NGC3718, NGC3729, and Hickson Compact Group 56

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Image Index:

Contribution Index (beta):

NGC3718, NGC3729, and Hickson Compact Group 56

NGC3718, NGC3729, and Hickson Compact Group 56

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