M81 - Bode's Galaxy - HaRGB 2-8-2022 (scottacrosby)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · M 81 · NGC 3031

M81 - Bode's Galaxy - HaRGB 2-8-2022, scottacrosby

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M81 - Bode's Galaxy - HaRGB 2-8-2022

Powered byPixInsight

M81 - Bode's Galaxy - HaRGB 2-8-2022

Notes:
M81 Bode's Galaxy in HaRGB - 2-8-2022: My first galaxy on the 2022 season!. I captured this over three nights and this is my first time processing an HaRGB version of a galaxy. I had a lot of weather trouble so my RGB data is light. Hope to improve upon this later.

Astro Pixel Processor Workflow for each set; HA, Red, Blue, Green:
0) Defaults
1. Single Session Processing: Sorting frames: quality
2. Checked create 32-bit Masters
3. 1000 stars
4. Defaults
5. Defaults
6. Lights to stack 90%, integrate Average, filter Winsorized Rejection, LNC Degree. 2nd degree, x2 Drizzle

PixInsight Workflow:
Dynamic crop
EZ Denoise on each image before integration
Dynamic Background Extraction
Combined Red, Blue, and Green into an RGB image
Then add Ha with the following pixel math
R: max($T[0], 1.1*HA_Add)
G: $T[1]
B: iif($T[0]<HA_Add, $T[2] + 0.06*HA_Add, $T[2])

Conservative easy soft stretch, Background Neutralization, Color Calibration, SCNR Green 50%
StarXterminator to make Stars and Starless images
Curves Transformation on Starless for saturation and contrast using color masks
Rangemask and Unsharp Mask on Starless to enhance brighter structures
Dark structure enhance script on Starless
Convolution on Stars image to smooth out the stars slightly
Curves Transformation on Stars Image for saturation and contrast
Create final version using PixelMath stars+Starless
Save Image as 16 bit TIFF for LightRoom

Lightroom:
Slight Exposure increase
Increase Whites slightly
Noise reduction
Additional Color Balance via Tone Curve
Luminescence adjustment via HSL

Topaz DeNoise to remove some leftover noise from the final image

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	5479383
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M81 - Bode's Galaxy - HaRGB 2-8-2022

M81 - Bode's Galaxy - HaRGB 2-8-2022

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Image Index:

Contribution Index (beta):

M81 - Bode's Galaxy - HaRGB 2-8-2022

M81 - Bode's Galaxy - HaRGB 2-8-2022

Equipment

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Description

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