Sh2-254 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: IC 2162 · Sh2-254 · Sh2-255 · Sh2-256 · Sh2-257

Powered byPixInsight

Sh2-254

Powered byPixInsight

Sh2-254

This image captures a series of five circular Sharpless HII emission objects located 8000 light-years away in the constellation of Orion. I have attached an annotated image to assist with the description below.

The three main objects, top to bottom, are Sh2-254, Sh2-257, and Sh2-255. To the right of Sh2-257 is the smaller nebula, Sh2-256. At the bottom of the image is the smallest of these 5 Sharpless nebulae, Sh2-258. In the annotated image, I have circled the ionizing stars which have been identified for each of these HII regions. A massive young star cluster, S255-2, is also identified on the annotated image. This cluster is well hidden by the extreme amount of dust in this region.

Thin brownish dust lanes wind through all of these nebulae. Several darker black patches of dust, dark enough to blot out all of the stars behind them, are also seen towards the center of the image.

This is a bright object, easy to image and process. It is fairly accessible for most of us in the northern hemisphere. I am not why it is not a more popular object.

Final
Original
C

C

Description: Annotated

Uploaded: ...

Sharpless2 Objects
The refractors!
Cloudy Nights
ZWO ASI1600MM/QHY163M

HII-Dominated Nebulae
Orphaned Beauties Catalog (Complete)
Sharpless Catalog (200/313)

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	2517842
PixInsight job	OJPPV2NVNV2XMCULCI943F3RE1OVUQY2
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h12m34s.975
RA (top/left)	06h11m56s.747
RA (top/right)	06h11m17s.335
RA (bottom/right)	06h13m13s.590
RA (bottom/left)	06h13m52s.794

Dec (center)	+18°01′09″.99
Dec (top/left)	+18°21′10″.47
Dec (top/right)	+17°49′15″.65
Dec (bottom/right)	+17°41′08″.97
Dec (bottom/left)	+18°13′02″.43

Image Index:

Contribution Index (beta):

Sh2-254

Sh2-254

Equipment

Acquisition details

Description

Comments

Revisions

C

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Sh2-254

Sh2-254

Equipment

Acquisition details

Description

Comments

Revisions

C

Sky plot

Histogram

In these public groups

In these collections

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information