NGC 2346 Butterfly Nebula (rdhand)

Celestial hemisphere: Southern · Constellation: Monoceros (Mon) · Contains: HD293368 · HD293369 · HD293370 · HD293371 · HD293372 · HD293373 · HD293374 · HD293378 · HD293379 · HD54739 · NGC 2346 · PK215+03.1

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NGC 2346 Butterfly Nebula

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NGC 2346 Butterfly Nebula

NGC 2346 is a planetary nebula informally known as the Butterfly Nebula. The nebula is bipolar in form and the center is girded by an expanding belt of ionized gas. It is moving away from the Sun at 47.00 km/s. At the heart of the bipolar planetary nebula is a pair of close stars orbiting each other once every sixteen days. The formation of the butterfly shape began millions of years ago, when the stars were farther apart. The more massive star expanded to encompass its binary companion, causing the two to spiral closer and expel rings of gas. Later, bubbles of hot gas emerged as the core of the massive red giant star became uncovered. In billions of years, our sun will become a red giant and emit a planetary nebula but in a more classic circular shape because the has no binary star companion.

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Planetary Nebula

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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	6812699
PixInsight job	GMWIM0ZTFWS82JEGR7XEIUP115NU47S9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h09m21s.717
RA (top/left)	07h08m38s.340
RA (top/right)	07h08m38s.151
RA (bottom/right)	07h10m05s.910
RA (bottom/left)	07h10m05s.262

Dec (center)	-00°47′52″.94
Dec (top/left)	-00°40′03″.58
Dec (top/right)	-00°55′38″.38
Dec (bottom/right)	-00°55′42″.70
Dec (bottom/left)	-00°40′07″.59

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NGC 2346 Butterfly Nebula

NGC 2346 Butterfly Nebula

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NGC 2346 Butterfly Nebula

NGC 2346 Butterfly Nebula

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