M81 & M82 HaRGB Early 2024 (Mike Webster)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 3031 · NGC 3034

Powered byPixInsight

M81 & M82 HaRGB Early 2024

Powered byPixInsight

M81 & M82 HaRGB Early 2024

M81 (Bode's Galaxy) and M82 (Cigar Galaxy) in HaRGB. To combine the Ha, I added the Ha before the initial image stretch and then applied SPCC for color correction. Later, I had difficulty with StarXterminator taking the Ha bits from M81 with it. To correct for this problem I:

Applied a range mask including both galaxies
Applied a binary mask (inverted) using the GAME script to mask the M81 portion of the range mask
Used pixel math to turn all unmasked pixels to zero: iif($T>0,0,$T)
The remaining mask was a range mask made up of M81 only
Created a clone image
Applied the mask to the image ahead of running StarX
Ran StarX
Processed the clone image (with stars) and starless image separately. The image with stars was processed for the result in the stars.
Used Bill Blanshan's star reduction methods to recombine the images.

Original
B
C
D
Final
E

B

Description: Darkened the background a bit more

Uploaded: ...

C

Description: minor adjustments to eliminate blue sky color and red shade in galaxies

Uploaded: ...

E

Description: Toned down the saturation somewhat for a more natural looking image.

Uploaded: ...

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	9620362
PixInsight job	MF97OAQ0K50BB7ZLI3BWDM8O92Q0FRGS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h55m48s.727
RA (top/left)	09h55m12s.175
RA (top/right)	09h49m48s.478
RA (bottom/right)	09h56m24s.410
RA (bottom/left)	10h01m58s.428

Dec (center)	+69°21′39″.10
Dec (top/left)	+69°57′42″.83
Dec (top/right)	+69°04′38″.18
Dec (bottom/right)	+68°45′32″.20
Dec (bottom/left)	+69°37′51″.89

Image Index:

Contribution Index (beta):

M81 & M82 HaRGB Early 2024

M81 & M82 HaRGB Early 2024

Equipment

Acquisition details

Description

Comments

Revisions

B

C

E

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

M81 & M82 HaRGB Early 2024

M81 & M82 HaRGB Early 2024

Equipment

Acquisition details

Description

Comments

Revisions

B

C

E

Sky plot

Histogram

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?

Delete this revision?

Delete this revision?

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