The Soul Nebula revisited (Roger Nichol)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD17086 · HD17356 · HD17505 · HD17520 · HD17688 · HD17911 · HD17971 · HD18152 · HD18294 · HD18326 · HD18337 · HD18458 · HD18473 · HD18766 · HD18767 · HD237000 · HD237007 · HD237011 · HD237015 · HD237016 · HD237018 · HD237019 · HD237023 · HD237034 · HD237036 · HD237054 · IC 1848 · IC 1871 · LBN 667 · LBN 670 · And 6 more.

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The Soul Nebula revisited

Powered byPixInsight

The Soul Nebula revisited

I originally imaged the Soul Nebula back in 2021; this year, while waiting for my main targets to appear over the horizon, I decided to re-image it and use the upgraded PixInsight tools, and my upgraded processing skills, to have another go and see how it compares. I didn't use any of the 2021 data as I was using a different dual Ha/Oiii filter and the rotation was a bit different to fit my main target.

The improvement in results is significant, particularly in noise reduction and better detail and contrast. The main reasons for improvement are: more data (89 x 1200s vs 43 x 600s on dual Ha/Oii filter), better dual filter (ALP-T vs L-eXtreme), better gradient processing (used NormaliseScaleGradient rather than LocalNormalisation), much better noise reduction (NoiseXterminator), better deconvolution (BlurXterminator rather than the usual deconvolution process).

Rendered in SHO PIP using the two dual filters ALP-T for Ha/Oiii and the IDAS NB3 for Sii/Oiii ; I didn't use any of the Oiii from the NB3 as it was so inferior to the data from the ALP-T.

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	7202059
PixInsight job	A3PJ5PC8X0HG91U9FYX25F8M7KXN2DYT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h55m23s.58
RA (top/left)	03h06m38s.40
RA (top/right)	02h47m31s.32
RA (bottom/right)	02h44m24s.93
RA (bottom/left)	03h02m44s.43

Dec (center)	+60°24′11″.4
Dec (top/left)	+60°49′10″.0
Dec (top/right)	+61°29′01″.4
Dec (bottom/right)	+59°55′40″.5
Dec (bottom/left)	+59°17′39″.9

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The Soul Nebula revisited

The Soul Nebula revisited

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The Soul Nebula revisited

The Soul Nebula revisited

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