Hickson 91 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Piscis Austrinus (PsA) · Contains: IC 5168 · NGC 7214

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Hickson 91

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Hickson 91

This tiny object is a Hickson compact galaxy group located over 300 million light years away in the constellation of Piscis Austrinus, at a declination of -28 degrees. Like many of the Hickson groups, this object consists of four galaxies at the same distance away from earth. The four galaxies consist of the central galaxy plus the 3 immediate galaxies to the lower right.

Hickson objects look absolutely spectacular in images captured from large mountaintop telescopes. From backyard images, not so much, but I enjoy imaging them anyway. I believe that this is the first image of this object on Astrobin.

The feature face-on galaxy at image center, NGC 7214, is 1.5 arc-minutes wide in our apparent view, corresponding to a diameter of 130,000 light years. This galaxy is interacting with a small companion galaxy (PGC 68155) to the lower right, as evidenced by the tidal streams surrounding the system, as well as the bright blue star clusters in the galaxy arm on the right side. The face-on galaxy to the lower right (PGC 68160) also shows signs of interaction in the Vorontsov-Velyaminov rows in its arms.

The galaxy to the upper left is IC 5168, which lies much closer to us. Just to the upper left of this galaxy are some tiny faint orangish galaxies which are located over 2 billion light years away.

The refractors!
Cloudy Nights
Hickson Galaxy Clusters
Takahashi Refractors
ZWO ASI183/QHY183

Galaxy Groups
Hickson Catalog (Complete)

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	Distinct awarded users	Total awarded images
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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.
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	2841184
PixInsight job	KRYBHXUS1B1J593X7AVLF4A5XJ4JHJTD
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	22h09m07s.711
RA (top/left)	22h08m19s.408
RA (top/right)	22h09m57s.776
RA (bottom/right)	22h09m55s.855
RA (bottom/left)	22h08m17s.789

Dec (center)	-27°48′35″.68
Dec (top/left)	-27°58′14″.91
Dec (top/right)	-27°57′47″.13
Dec (bottom/right)	-27°38′55″.38
Dec (bottom/left)	-27°39′23″.11

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Hickson 91

Hickson 91

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Hickson 91

Hickson 91

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