NGC2903 (Kenneth Adler)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: NGC 2903 · NGC 2905

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NGC2903

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NGC2903

NGC2903 is a barred spiral galaxy located in the constellation of Leo . The Galaxy is some 30 million light years away. It was discovered by William Hershel In 1785. Herschel thought it was a double nebula. William Parsons, 3rd Earl of Rosse, a famous astronomer, found NGC2903 to be a barred spiral galaxy. Parsons was famous for building large telescopes. He built a 72" reflecting telescope called the Leviathan of Parsonstown in Northern Ireland. The telescope was the largest telescope in the world until around 1917 when the 100" Hooker telescope was built.

NGC2903 has tightly wound pinwheeling arms with scatterings of sparkling stars, glowing bursts of gas, and dark, weaving lanes of cosmic dust. The Galaxy is about 107, 000 light years in diameter.

This photo was the result of six observing sessions with nearly a full moon. My observatory is a backyard Podshed in the City of Huntington Beach, in a Bortle 9 location. I captured the data with both an Optolong L Pro 115 x 180 and 55 minutes of Optolong L Enhance. I stacked the frames in Astro Pixel Processor and used 73 gigabytes of hard drive to process the photograph. Altogether I have about 10 hours of exposure. The photo was processed in Startools.

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	Distinct awarded users	Total awarded images
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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
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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
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
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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	4397567
PixInsight job	V01FQXEWG99WL090WBX6WEQ7ERHSMVW6
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	09h32m11s.200
RA (top/left)	09h31m47s.124
RA (top/right)	09h31m43s.928
RA (bottom/right)	09h32m35s.270
RA (bottom/left)	09h32m38s.609

Dec (center)	+21°30′13″.19
Dec (top/left)	+21°39′40″.72
Dec (top/right)	+21°21′14″.46
Dec (bottom/right)	+21°20′45″.20
Dec (bottom/left)	+21°39′10″.74

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NGC2903

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NGC2903

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