IC1848 - IC1871 - Soul Nebula (Jon Bridges)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1848 · IC 1871 · Sh2-199

Image of the day 02/21/2021

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IC1848 - IC1871 - Soul Nebula

Image of the day 02/21/2021

Powered byPixInsight

IC1848 - IC1871 - Soul Nebula

The Soul Nebula spans roughly 100 light years across at 6,500 ly away. It doesn't quite fit into my smaller 183 sensor, but I enjoyed the additional detail from this camera's tiny pixels.

I experimented with tone mapping this time, moving Ha to be more towards the red and OIII towards the green. For anyone curious, the pixel math expression used was:

R: Ha*.45+SII*.55

G: Ha*.6+OIII*.4

B: OIII

Thank you for checking out the result!

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AstroPixelProcessor

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Stacked with default settings except LNC set to 2nd degree with 3 iterations.

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Pixinsight

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1. Deconvolution

2. TGV Denoise & MMT (Jon Rista method) used for noise reduction.

3. STF Stretch applied.

4. Temporary star removal for tone mapping.

5. PixelMath SHO combine.

6. Small 30% SNCR applied to remove slight green cast.

7. Re-add stars back.

8. Applied various curves/masks to enhance contrast.

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Photoshop

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1. Spot cleanup of small over-saturated stars.

2. Smart Sharpening of just the details in IC 1871

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

Distribution of astrophotographers

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	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
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Extremely wide field
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Northern lights
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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
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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	4222269
PixInsight job	PPCXFJVL9HJKI0ONX0EALE4D6YBKFGN5
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h55m38s.124
RA (top/left)	02h56m44s.516
RA (top/right)	02h49m10s.441
RA (bottom/right)	02h54m34s.903
RA (bottom/left)	03h02m08s.764

Dec (center)	+60°37′23″.30
Dec (top/left)	+61°25′00″.44
Dec (top/right)	+60°29′25″.28
Dec (bottom/right)	+59°49′43″.60
Dec (bottom/left)	+60°44′10″.18

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Image of the day 02/21/2021

IC1848 - IC1871 - Soul Nebula

Image of the day 02/21/2021

IC1848 - IC1871 - Soul Nebula

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Image Index:

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Image of the day 02/21/2021

IC1848 - IC1871 - Soul Nebula

Image of the day 02/21/2021

IC1848 - IC1871 - Soul Nebula

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Sky plot

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