Pacman Nebula (Michael Vincent)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281

Powered byPixInsight

Pacman Nebula

Powered byPixInsight

Pacman Nebula

===Capture===
74 Ha at 300s, 200 gain 50 offset
158 O3 at 300s, 200 gain 50 offset
146 S2 at 300s, 200 gain 50 offset
50 R at 15s, 200 gain 50 offset
50 G at 15s, 200 gain 50 offset
50 B at 15s, 200 gain 50 offset
Bortle 7 suburban zone

===Narrowband color processing===
Crop and DBE each channel
Combine as SHO with LRGBCombination
Extract luminance for later
Background neutralization
MMT noise reduction
Masked stretch; select background with preview window

===Luminance processing===
PSF Image Creator - Harmut v. Bornemann
Deconvolution, 30 iterations
7 5 3 1 wavelet layers

Fix star rings:
Starnet on original Lum
Stretch further with histogram transformation as needed to fully cover rings

Apply mask on deconvolved image to protect all but stars
Pixelmath original Lum (before deconvolution) onto image. Can do multiple times if rings remain

Noise reduction on Lum:
Copy lum, stretch, low contrast, stretch to middle of histogram
apply mask, invert to protect lights
MMT noise reduction

Masked stretch; select background with preview window

Add contrast with LocalHistogramEqualization (mask off background)

AdvSharpen by Hartmut V. Bornemann

===LRGB===
Apply Lum to RGB with LRGBCombination
Starnet to remove stars
Contrast curve
Mask background with Luminance, then saturate lights
Curves with color masks

===RGB Stars===
Register to LRGB and DBE
Background Neutralization
Color Calibration
Masked Stretch
Starnet to remove stars

===Final===
Add RGBstars to starless LRGB with PixelMath
Apply Luminance again
Strong Luminance mask, MMT noise reduction
TGVDenoise
Final crop

Narrowband imaging
Suburban Astrophotography
Light Polluted skies

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	Basic success
Started	...
Astrometry.net job	5198144
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

Pacman Nebula

Pacman Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Pacman Nebula

Pacman Nebula

Equipment

Acquisition details

Description

Comments

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?

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