Sh2-278 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Sh2-278

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Sh2-278

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Sh2-278

This object is a Sharpless emission nebula located in the constellation of Orion at a declination of -6 degrees. This image captures the emission nebula, associated dark nebula, and several faint blue reflection nebulae created by the nearby bright star Rigel.

The blue reflection nebulae threw me off at first. These objects don't show up as typical reflection nebulae - it just looks like two washed out blue regions in the image. I assumed I had a poor flat calibration or some other issue, since the blue color is so faint that it just looks like the image is "off" a bit. But checking other images, these regions are not artifacts but exist because of Rigel.

The tiny bright red arc in the center of the darkest nebula is the Herbig-Haro object HH 240. Several other tiny red HH objects can be seen nearby. Many other nearby HH objects are hidden from view in the clouds.

This object is best captured with a setup that has a wider field of view.

The refractors!
Cloudy Nights
Texas Astronomy
Takahashi Refractors
Sharpless2 Objects
ZWO ASI183/QHY183

HII-Dominated Nebulae
Sharpless Catalog (200/313)

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Star trails
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
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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	3234514
PixInsight job	UNNJZM4SDQT0MWKCVZB1SAY23VGOUYB1
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h19m53s.906
RA (top/left)	05h18m54s.441
RA (top/right)	05h21m29s.844
RA (bottom/right)	05h20m53s.304
RA (bottom/left)	05h18m17s.963

Dec (center)	-05°44′56″.40
Dec (top/left)	-06°04′30″.58
Dec (top/right)	-05°50′36″.34
Dec (bottom/right)	-05°25′21″.47
Dec (bottom/left)	-05°39′15″.26

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Sh2-278

Sh2-278

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Sh2-278

Sh2-278

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