Coddington's Nebula - Galaxy - IC 2574 (Monty Chandler)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Coddington's Nebula · IC 2574

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Coddington's Nebula - Galaxy - IC 2574

Link: https://montychandler.smugmug.com/Astrophotography/The-Heavans/i-QjP2sLZ/A

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Coddington's Nebula - Galaxy - IC 2574

Link: https://montychandler.smugmug.com/Astrophotography/The-Heavans/i-QjP2sLZ/A

IC 2574, also known as Coddington's Nebula, is a dwarf spiral galaxy in the Ursa Major constellation in our northern sky. It's located 12 million light-years away and is about 50,000 light-years across.

When imaging this target with 5 minute exposures at a 1625mm focal length, a faint smudge appears where the galaxy is suppposed to be. This is not one of those big bright galaxies we so often see photographed. This image is an integration of 11 hours of exposure. Even then it's a fairly faint target.

American astronomer Edwin Foster Coddington discovered IC 2574 in 1898. It's classified as a dwarf irregular galaxy because of its small size and lack of structure. IC 2574 is a member of the M81 group of galaxies, which is one of the closest groups to the local group. It contains active star-forming regions that show strong H-alpha emissions, especially in the lower left part of the galaxy in my image.

Astronomers consider IC 2574 a galaxy because it's small, lacks structure, and is forming stars. Dwarf galaxies are small galaxies made up of a few billion stars. In 1898 it looked like a smear and therefore was called a nebula by Edwin Coddington. Improved resolution of telescopes over time revealed it to be a galaxy. Of course now with the Hubble Telescope, a population census is possible.

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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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Status	Advanced success
Started	...
Astrometry.net job	9138033
PixInsight job	XO2PZNZ6WA47HPGN44QNOQS5DNK1RLSV
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	10h28m23s.730
RA (top/left)	10h25m22s.402
RA (top/right)	10h25m48s.280
RA (bottom/right)	10h31m19s.107
RA (bottom/left)	10h31m05s.214

Dec (center)	+68°24′38″.36
Dec (top/left)	+68°48′07″.70
Dec (top/right)	+67°59′47″.78
Dec (bottom/right)	+68°00′55″.77
Dec (bottom/left)	+68°49′19″.11

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Coddington's Nebula - Galaxy - IC 2574

Coddington's Nebula - Galaxy - IC 2574

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Coddington's Nebula - Galaxy - IC 2574

Coddington's Nebula - Galaxy - IC 2574

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