SH 2-313 (Abell 35) in Hydra (Steve de Lisle)

Celestial hemisphere: Southern · Constellation: Hydra (Hya) · Contains: HD111865 · HD111947 · HD112039 · PK303+40.1 · Sh2-313

Powered byPixInsight

SH 2-313 (Abell 35) in Hydra

Powered byPixInsight

SH 2-313 (Abell 35) in Hydra

SH 2-313 was once thought to be a planetary nebula. However, close inspection by Jacoby, (Astrophys. J., v 244, 902-911, March 15, 1981) revealed some anomalies which challenged this view. Of note is that the central star is actually a close binary with a very hot white dwarf companion - which you can see in this image. Also, there is a prominent bow shock surrounding the central star which indicates that the central star is moving at very high speeds through the interstellar medium. Instead of a PN, Jacoby and Hollis, et al (Astrophys. J. v 456, 644-650, January 10, 1996), considered that the hot white dwarf star had ionised the hydrogen in the region, resulting in what is known as a Strömgren sphere, similar to that of the famous Rosette nebula.
This image is a combination of RGB, Ha and OIII filtered images.

Original
Final
F

Astronomical Society of Victoria (ASV)

Nebulae

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	7962628
PixInsight job	953RLLHHPIC5DOJVQYSP2NB26LVS15W1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h53m32s.751
RA (top/left)	12h52m17s.885
RA (top/right)	12h52m10s.119
RA (bottom/right)	12h54m47s.926
RA (bottom/left)	12h54m54s.805

Dec (center)	-22°52′25″.80
Dec (top/left)	-22°27′22″.55
Dec (top/right)	-23°16′06″.88
Dec (bottom/right)	-23°17′27″.41
Dec (bottom/left)	-22°28′37″.50

Image Index:

Contribution Index (beta):

SH 2-313 (Abell 35) in Hydra

SH 2-313 (Abell 35) in Hydra

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

SH 2-313 (Abell 35) in Hydra

SH 2-313 (Abell 35) in Hydra

Equipment

Acquisition details

Description

Comments

Revisions

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