NGC 7721 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Aquarius (Aqr) · Contains: NGC 7721 · PGC 1031346 · PGC 1032492

NGC 7721

This Astrobin Debut Object is a spiral galaxy located 100 million light years away in the constellation of Aquarius at a declination of -7 degrees. It is a magnitude 12 galaxy which spans 4 arc-minutes in our apparent view. This corresponds to a Milky Way size diameter of 120,000 light years.

The disk is inclined about 18 degrees off edge-on, with the near side at the bottom of the disk.

I love the colorful and textured disk of this distant galaxy. The yellow unbarred core is surrounded by spiraling dust lanes sprinkled with blue star clouds. A few reddish HII regions make it even more interesting.

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CMOS Imagers
Cloudy Nights
First on Astrobin
Schmidt-Cassegrain Telescope (SCT) Imagers
Rarely Imaged Small DSOs
Texas Astronomy
Images from the EdgeHD Series
ZWO ASI294MM Pro Images
Unique or Unusal Deep Sky Targets

Astrobin Debuts (670 DSOs)
Many Galaxy Arms

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	7248801
PixInsight job	SO50IYV9O8LKZ8XGEOSGEIHFF802279H
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h38m48s.783
RA (top/left)	23h39m15s.297
RA (top/right)	23h39m14s.548
RA (bottom/right)	23h38m22s.276
RA (bottom/left)	23h38m22s.992

Dec (center)	-06°31′04″.90
Dec (top/left)	-06°38′50″.46
Dec (top/right)	-06°23′09″.80
Dec (bottom/right)	-06°23′19″.20
Dec (bottom/left)	-06°38′59″.35

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NGC 7721

NGC 7721

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Contribution Index (beta):

NGC 7721

NGC 7721

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