SH2-308 - The Dolphin Head Nebula (BrettD)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: The star ο1CMa

SH2-308 - The Dolphin Head Nebula, BrettD

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SH2-308 - The Dolphin Head Nebula

Revision title: RGB Stars

Powered byPixInsight

SH2-308 - The Dolphin Head Nebula

Revision title: RGB Stars

The Dolphin Head nebula ( cataloged as SH2-308 ) is one that really looks like it's namesake.

Fast winds from the bright central Wolf-Rayet star create the bubble-shaped nebula. It lies in the Canis Major constellation approximately 70,000 light years away.

This image is created from almost 7 hours of 3 minute exposures with the L-eXtreme filter, which allows my colour camera to efficiently capture both HA and OIII spectral emissions, even under light polluted suburban skies.
Combined with an hour of unfiltered 60 second exposures for natural star colours.

Original
B
Final
C
D

B

Title: Starless

Description: Stars removed via Starnet V2

Uploaded: ...

C

Title: RGB Stars

Description: With RGB Stars

Uploaded: ...

D

Title: + 5 hrs

Description: Re-processed in PixInsight, and combined with 5 hours of new data taken with the L-Ultimate filter

Uploaded: ...

Cloudy Nights

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	Basic success
Started	...
Astrometry.net job	5467680
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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SH2-308 - The Dolphin Head Nebula

Revision title: RGB Stars

SH2-308 - The Dolphin Head Nebula

Revision title: RGB Stars

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SH2-308 - The Dolphin Head Nebula

Revision title: RGB Stars

SH2-308 - The Dolphin Head Nebula

Revision title: RGB Stars

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C

D

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