NGC 2346 (Peter Goodhew)

Celestial hemisphere: Southern · Constellation: Monoceros (Mon) · Contains: HD293368 · HD293369 · HD293370 · HD293371 · HD293372 · HD293373 · HD293374 · NGC 2346 · PK215+03.1

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NGC 2346

Link: https://www.imagingdeepspace.com/ngc-2346.html

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NGC 2346

Link: https://www.imagingdeepspace.com/ngc-2346.html

NGC 2346 is a bipolar planetary nebula in the constellation of Monoceros. It is informally known as the Butterfly Nebula. It has an unusually cool central star, which is a spectroscopic binary.
The central star is a binary star system consisting of an A-type subgiant and a subdwarf O star. The system, which has an orbital period of 16 days is also variable, probably due to dust in orbit around it. The dust itself is heated by the central star and so NGC 2346 is unusually bright in the infrared part of the spectrum. When one of the two stars evolved into a red giant, it engulfed its companion, which stripped away a ring of material from the larger star's atmosphere. When the red giant's core was exposed, a fast stellar wind inflated two ‘bubbles’ from either side of the ring.

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	7097142
PixInsight job	56ELGZT8ERV2EU1GGYSU0EK4Q6TV2UO0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h09m22s.994
RA (top/left)	07h09m56s.454
RA (top/right)	07h08m50s.311
RA (bottom/right)	07h08m49s.500
RA (bottom/left)	07h09m55s.648

Dec (center)	-00°48′24″.60
Dec (top/left)	-00°43′39″.60
Dec (top/right)	-00°43′18″.72
Dec (bottom/right)	-00°53′09″.91
Dec (bottom/left)	-00°53′29″.79

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NGC 2346

NGC 2346

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Image Index:

Contribution Index (beta):

NGC 2346

NGC 2346

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