NGC 4100 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 4100

NGC 4100

A brief break today from Arp imaging to bring you this object, a spiral galaxy located 65 million light years away in the constellation of Ursa Major at a declination of +50 degrees. This galaxy spans 3.5 arc-minutes in our apparent view, which corresponds to a diameter of 70,000 light years. Our view is about 15 degrees from edge-on.

I like the strong intermediate dust lanes and the fragmented arms. The inner core is bright. The best part for me is the faint star streams around the outer edge of the disk.

I find the Hubble image of the mouseover to be hard to understand. The faint outer star streams are barely seen. Plus, the tone and saturation of the blue star color does not look natural to me. The stars are all the same bright blue tone. Perhaps those of you with more experience interpreting or processing NASA Hubble images could help me better understand this one.

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Description: Comparison with Hubble Image

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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.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
Astrometry.net job	4655851
PixInsight job	2WOK510PPEXQUTUYNOM5GHPZT5ZXXY4J
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	12h06m08s.570
RA (top/left)	12h05m49s.219
RA (top/right)	12h05m28s.899
RA (bottom/right)	12h06m27s.804
RA (bottom/left)	12h06m48s.402

Dec (center)	+49°35′01″.69
Dec (top/left)	+49°42′56″.50
Dec (top/right)	+49°29′28″.11
Dec (bottom/right)	+49°27′07″.21
Dec (bottom/left)	+49°40′34″.55

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