Dolphin nebula (Duane Melvin)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 CMa) · 16 omi01 CMa · HD49867 · HD49868 · HD49891 · HD49939 · HD50046 · HD50047 · HD50092 · HD50119 · HD50154 · HD50155 · HD50176 · HD50212 · HD50232 · HD50259 · HD50260 · HD50304 · HD50352 · HD50375 · HD50376 · HD50394 · HD50425 · HD50465 · HD50492 · HD50493 · HD50535 · HD50563 · HD50590 · HD50591 · And 64 more.

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Dolphin nebula

Powered byPixInsight

Dolphin nebula

Special thanks to the folks at Insight Observatory for outstanding data!
purchased data
Sublime Skies LLC Starbase

Ha7 46 exposures, 300 Seconds each
OIII 35 exposures, 300 Seconds each

Optics AFIL-9
Format FITS
Integration time 6h 45m 0s
Exposures 81
Dates 2022-12-17 2023-01-31

The source is from two precalibrated fits files. The data was captured with Ha7 and OIII filters.

My processing steps in general:
Deep Sky Stacker - two fits files, register then stack - tiff output
Open both tiff files in Pixinsight - perform ABE using division on each - crop the images
Pull the stars using starXterminator, stretch the stars in PS creating two linear images Ha7 and OIII
Back into Pixinsight to use script, EZ processing suite, and Soft Stretch on each of these two nebula-only images.

Combine the stars only images Ha7 and OIII using channel combination, HOO I.E. Ha7 to red, OIII to both green and blue to get stars in color
Combine the nebula only Ha7 and OIII using channel combination, HOO process same as above to produce the first color image of nebula only

Open this nebula only image in PS and perform selective color with Cyan in yellow reduced to left and magenta increased to right which brings out the blue head

use camera raw filter in PS to dehaze and clarify
use Topaz noise reduction
Final level adjustment for contrast depth

save file in PS then open in Pixinsight

In Pixinsight, combine color stars only with color nebula only using pixel math, and do final crop in Pixinsight!

Looks good

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
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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	9244412
PixInsight job	21JYQ8ZN7BI3XY1SAPKWX1A4ZCIL278B
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h54m18s.50
RA (top/left)	06h49m29s.57
RA (top/right)	06h49m14s.21
RA (bottom/right)	06h59m14s.99
RA (bottom/left)	06h59m14s.65

Dec (center)	-23°30′42″.5
Dec (top/left)	-22°11′33″.1
Dec (top/right)	-24°48′27″.3
Dec (bottom/right)	-24°50′02″.3
Dec (bottom/left)	-22°12′59″.9

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Dolphin nebula

Dolphin nebula

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