Sharpless 2-132 Lion Nebula (Aaron Freimark)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B369 · HD211430 · HD211564 · HD211643 · HD211820 · HD211853 · HD211982 · HD212183 · HD239919 · HD239928 · HD239929 · HD239933 · LBN 471 · LBN 473 · LDN 1150 · LDN 1154 · LDN 1156 · LDN 1161 · LDN 1163 · RW Cep · Sh2-132

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Sharpless 2-132 Lion Nebula

Powered byPixInsight

Sharpless 2-132 Lion Nebula

Finally a clear night or two.

All

Weighted Batch Preprocessing
Dynamic Crop

L (stars)

NoiseXTerminator
StarXTerminator to keep stars and remove background
Histogram Transformation to stretch

RGB (stars)

Linear Fit R & G to B
Channel Combination
Image Solver
Photometric Color Calibration
Histogram Transformation to stretch
Create a Range Mask from L to mask out the biggest stars
LRGB Combination to apply L to the RGB stars, keeping the mask so the biggest stars stay big
Morphological Transformation to erode star sized, with mask, repeat once

SHO

NoiseXTerminator
StarXTerminator to remove stars from the nebula
Arcsinh Stretch
PixelMath to combine SII, Ha, and OIII to a Hubble palette image
SCNR to remove green cast
LRGB Combination to apply Ha as the luminance layer
Curves Transformation to emphasize brightness differences and dramatize the color
Clone Stamp to remove a few small artifacts
Unsharp Mask
Topaz DeNoise [Revision B]
PixelMath ~(~SHO * ~Stars) to screen back in stars

Original
Final
B

Mid-Hudson Astronomical Association (MHAA)

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	6400700
PixInsight job	D0LQK5YAYY6SPRY4X6NG13FI3LZKGQS8
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h19m07s.660
RA (top/left)	22h25m18s.844
RA (top/right)	22h23m01s.530
RA (bottom/right)	22h12m53s.579
RA (bottom/left)	22h15m22s.594

Dec (center)	+56°03′46″.36
Dec (top/left)	+55°53′38″.28
Dec (top/right)	+56°45′38″.47
Dec (bottom/right)	+56°12′44″.59
Dec (bottom/left)	+55°21′29″.29

Image Index:

Contribution Index (beta):

Sharpless 2-132 Lion Nebula

Sharpless 2-132 Lion Nebula

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Image Index:

Contribution Index (beta):

Sharpless 2-132 Lion Nebula

Sharpless 2-132 Lion Nebula

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

In these public groups

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