NGC 3938 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3938 · PGC 2238816 · PGC 2239382

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NGC 3938

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NGC 3938

This object is a beautiful face-on spiral galaxy located 50 million light years away in the constellation of Ursa Major at a declination of +44 degrees. This 10.4 magnitude galaxy spans 5 arc-minutes in our apparent view, which corresponds to an actual diameter of 75,000 light years.

The detailed disk surrounding the bright tight core is sprinkled with blue star clusters and pink HII regions. The arm structure is fascinatingly asymmetric. On the lower right portion of the disk, the arms appear in segments that are tightly bunched. But in the upper left part of the disk, the arms take on a widely spaced unusual but regular pattern. The disk has been disturbed but I don’t see any companions.

Images from the EdgeHD Series
Schmidt-Cassegrain Telescope (SCT) Imagers
Cloudy Nights
ZWO ASI1600MM/QHY163M
Texas Astronomy

Face-on Galaxies
Many Galaxy Arms
VV Galaxy Rows

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	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

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	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

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3629658
PixInsight job	KRPPE63XEJDOMJ7VKVTVUMEW80XO7OCQ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	11h52m49s.652
RA (top/left)	11h53m37s.126
RA (top/right)	11h52m00s.537
RA (bottom/right)	11h52m02s.379
RA (bottom/left)	11h53m38s.577

Dec (center)	+44°07′20″.10
Dec (top/left)	+44°14′41″.95
Dec (top/right)	+44°14′20″.39
Dec (bottom/right)	+43°59′56″.81
Dec (bottom/left)	+44°00′18″.31

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NGC 3938

NGC 3938

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NGC 3938

NGC 3938

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