Dolphin Nebula (TRE)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 CMa) · 16 omi01 CMa · HD50304 · HD50646 · HD50680 · HD50740 · HD50804 · HD50896 · HD51013 · HD51550 · HD51601 · LBN 1052 · Sh2-308 · The star Udra (ο1 CMa

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Dolphin Nebula

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Dolphin Nebula

SH2-308, also known as the Dolphin Nebula, RCW 11, or LBN 1052, is an impressive astronomical object that captures the imagination with its unique shape resembling a dolphin's head. This nebula is located near the center of the constellation of Canis Major and belongs to a class of objects known as H II regions, which are composed of ionized hydrogen.SH2-308 is approximately 5,000 light-years away from Earth and covers a sky area comparable to that of a full moon, albeit much fainter. This nebula is the result of the powerful stellar winds blown by a hot, massive star known as a Wolf-Rayet star. This star, with a mass more than 20 times that of our Sun, is responsible for the ionization of the surrounding gas, creating the nebula's characteristic glow

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	9163031
PixInsight job	RU98B5TL0QPHMEIX8GSDXO6JLFW0709F
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h54m26s.50
RA (top/left)	06h51m21s.32
RA (top/right)	06h53m02s.40
RA (bottom/right)	06h57m30s.93
RA (bottom/left)	06h55m48s.85

Dec (center)	-23°50′12″.8
Dec (top/left)	-23°45′49″.6
Dec (top/right)	-24°28′11″.2
Dec (bottom/right)	-23°54′23″.0
Dec (bottom/left)	-23°12′12″.4

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Dolphin Nebula

Dolphin Nebula

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Image Index:

Contribution Index (beta):

Dolphin Nebula

Dolphin Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

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