Sh2-228 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: HD280571 · HD280572 · HD280666 · HD280668 · LBN 783 · LBN 784 · Sh2-228

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Sh2-228

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Sh2-228

This small HII-dominated emission nebula, also known as LBN 784, is located 14,000 light years away in the constellation of Auriga at a declination of +37 degrees. It spans 3 arc-minutes in our apparent view. This corresponds to a diameter of 12 light years.

When seen in the infrared, a small dense star cluster appears in the upper portion of the nebula between the central bright star and the pair of bright stars above. This cluster is not visible in my image. The dark dust clouds in the nebula are pointing to this cluster location, which is likely the source of the nebula ionization.

By coincidence, yesterday my friend Göran posted a nice wide field image of the region which contains this object, seen here. His image has a FOV over 10x mine - his FOV is 4.13 degrees while mine is 0.38 degrees.

Images from the EdgeHD Series
ZWO ASI294MM Pro Images
Sharpless2 Objects
Unique or Unusal Deep Sky Targets
CMOS Imagers
Cloudy Nights
Schmidt-Cassegrain Telescope (SCT) Imagers
Rarely Imaged Small DSOs
Texas Astronomy

HII-Dominated Nebulae
Sharpless Catalog (200/313)

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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	6554109
PixInsight job	ZL7RUTK6JR11SPKYDZYBKB74EZC1P8FR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h13m25s.961
RA (top/left)	05h14m13s.800
RA (top/right)	05h12m37s.277
RA (bottom/right)	05h12m38s.356
RA (bottom/left)	05h14m14s.542

Dec (center)	+37°26′49″.10
Dec (top/left)	+37°33′10″.36
Dec (top/right)	+37°32′54″.30
Dec (bottom/right)	+37°20′26″.39
Dec (bottom/left)	+37°20′42″.39

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