NGC 6946 - The Fireworks Galaxy in LRGB (gmadkat)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Fireworks Galaxy · NGC 6946

Powered byPixInsight

NGC 6946 - The Fireworks Galaxy in LRGB

Powered byPixInsight

NGC 6946 - The Fireworks Galaxy in LRGB

This was a tough target for me to process with the dense star field, the new Adam Block star deemphasis script was handy here!

Approx 26 hours of LRGB data from Sierra Remote Observatory.

L
deconvolution
MLT noise reduction
HT to linear
HDRMT to sharpen details
deconvolution

Ha
deconvolution
MLT noise reduciton
HT to linear

R, G and B
ABE
MLT noise reduciton

RGB
channel combination
MLT chrominance noise reduction
HT to linear using Randy's method. Thanks @Randy Lindstrom for the demo and the idea!
LRGBCombination drag L to RGB
LHE
HT and curves
NRGBCombination (adding in Ha very light touch)
HT and curves
Dynamic Crop
Adam Block Star De-emphasizer script
Adv Sharpening
LHE
MLT to sharpen
HT touch up

Original
Final
B

B

Description: Processed this with help from @SCObservatory, still iterating on this but here is version2!

Here is a brief overview of the processing. Most of the changes were in Lum..

Lum
1. MLT Denoise
2. Lum deconvolution with the PSF from Hartmut's PSFImage script. Star Mask for deringing support, with the Lum Mask in place
3. SCT/HT to nonliner gently, so the galaxy k values stayed under 0.8 (except stars)
3. LHE mask with the (Lum mask - Starmask) added to it and tweaked settings in LHE until I got desired sharpness and contrast

RGB
Chroma denoise in MLT
RGB Combination
Convolution to light blur

LRGB:
L from above applied to RGB above.

Adjust final settings in curves and saturation

Uploaded: ...

NOVAC
N.I.N.A. Users
AstroBros
AstroBin Platform open discussions community forum

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	4913217
PixInsight job	Z4JXZGR5CBUQ7FB5PBLJAWE28SQFT8UT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h34m54s.981
RA (top/left)	20h33m48s.416
RA (top/right)	20h33m45s.345
RA (bottom/right)	20h36m02s.112
RA (bottom/left)	20h36m04s.920

Dec (center)	+60°09′03″.60
Dec (top/left)	+60°00′33″.37
Dec (top/right)	+60°17′12″.40
Dec (bottom/right)	+60°17′31″.80
Dec (bottom/left)	+60°00′52″.99

Image Index:

Contribution Index (beta):

NGC 6946 - The Fireworks Galaxy in LRGB

NGC 6946 - The Fireworks Galaxy in LRGB

Equipment

Acquisition details

Description

Comments

Revisions

B

Acquired at

Sky plot

Histogram

In these public groups

Image Index:

Contribution Index (beta):

NGC 6946 - The Fireworks Galaxy in LRGB

NGC 6946 - The Fireworks Galaxy in LRGB

Equipment

Acquisition details

Description

Comments

Revisions

B

Acquired at

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information