Dolphin-Head Nebula - Sh2-308 (HOO w/ RGB Stars) (James Hawks)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 CMa) · 16 omi01 CMa · HD50563 · HD50591 · HD50646 · HD50679 · HD50680 · HD50740 · HD50804 · HD50896 · HD51013 · HD51034 · HD51036 · HD51087 · HD51155 · LBN 1052 · Sh2-308 · The star Udra (ο1 CMa

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Dolphin-Head Nebula - Sh2-308 (HOO w/ RGB Stars)

Powered byPixInsight

Dolphin-Head Nebula - Sh2-308 (HOO w/ RGB Stars)

Dolphin-Head Nebula - Sh2-308, ~4530 light years away, is an H II region located near the center of the constellation Canis Major. The image is dominated by the glow of ionized oxygen atoms mapped to a blue hue. It is composed of ionized hydrogen. The nebula is bubble-like and surrounds a star named EZ Canis Majoris. This star is in the brief, pre-supernova phase of its stellar evolution.

This image was captured in a Queen Creek (Arizona) Bortle 7/8 backyard using a Skywatcher Esprit 150ED telescope. The telescope is mounted on a 10Micron GM2000 HPS II mount. The camera is a ZWO ASI 2600MM Pro using Antlia OIII and HA 3nm filters. It was captured over 9 nights (2023-02-15 to 2023-03-12). The images were stacked/processed in Pixinsight and fine-tuning done in Photoshop.

Acquisition:
   Location: Queen Creek, AZ Bortle 7/8
   Dates: 2023-02-15 to 2023-03-12
   Lights (Dithered, Cooled -20°C, Gain 100):
       33 x 600s HA
       52 x 600s OIII
       15 x 300s R
       15 x 300s G
       15 x 300s B
   Bias: 200
   Flats: 25 Each Filter

Hardware:
   Camera: ZWO ASI 2600MM PRO
   Scope: Skywatcher Esprit 150ED
   Focuser: FocusCube2
   Guide Camera: ASI 174mm Mini
   Guide Scope: ZWO OAG-L
   Mount: GM2000 HPS II
   Filters: Antlia VPRO RGB, OIII, HA 3nm

Software:
   NINA
   Pixinsight
   Photoshop

Processing:
   Stacked in Pixinsight (WBPP, SubframeSelector, ImageIntegration)
   Pixinsight (DCrop, DBE, BlurXterminator, NoiseXterminator, ChannelCombination (Stars), PixelMath (HOO), BGNeutralization, SpectrophotometricCC, SCNR, StarXTerminator, GeneralizedHS, Curves)
   Photoshop (AstroFlat Pro, Camera Raw, Image Color/Levels/Brightness/Vibrance/Saturation)

N.I.N.A. Users
Skywatcher Esprit ED Super APO Triplet
Arizona Astrophotographers
ZWO ASI2600MM Pro

Please note: The following tables are updated every 24 hours.

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	Distinct awarded users	Total awarded images
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This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	7420111
PixInsight job	CWGPYB4ICLKK70B1881MZIRY13OZIP3K
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h54m30s.187
RA (top/left)	06h52m37s.936
RA (top/right)	06h52m44s.840
RA (bottom/right)	06h56m23s.147
RA (bottom/left)	06h56m14s.761

Dec (center)	-23°56′18″.69
Dec (top/left)	-23°32′16″.65
Dec (top/right)	-24°22′01″.50
Dec (bottom/right)	-24°20′15″.75
Dec (bottom/left)	-23°30′32″.10

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Dolphin-Head Nebula - Sh2-308 (HOO w/ RGB Stars)

Dolphin-Head Nebula - Sh2-308 (HOO w/ RGB Stars)

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Dolphin-Head Nebula - Sh2-308 (HOO w/ RGB Stars)

Dolphin-Head Nebula - Sh2-308 (HOO w/ RGB Stars)

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