M81 & M82 (jeremy.wiggins)

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

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M81 & M82

Powered byPixInsight

M81 & M82

Pre-processing (PixInsight 1.8.8)

1. ABE on each sub (apply ABE to Image Container)

2. Cosmetic Correction

3. Debayer

4. Subframe Selector to weight frames

5. Star Alignment, generating Drizzle data

6. Local Normalization

7. Drizzle Integration

Processing (PixInsight 1.8.8)

1. Dynamic Crop

2. Clone Stamp to get rid of dust motes

3. 2x ABE, division then subtraction

4. 2x DBE, subtraction then division

5. Background Neutralization

6. Photometric Color Calibration

7. SCNR, removing 85% green

8. TGVDenoise, using an inverted bright low contrast mask (Jon Rista method)

9. MMT, using an inverted (very) bright mask (Jon Rista method)

10. ArcsinhStretch

11. CorrectMagentaStars script

12. HDRMultiscaleTransform to add contrast to the galaxies, using a mask generated by PixelMath to subtract a star mask from a range mask

13. Curves to adjust saturation / blue & red levels / brightness, using a luminance mask to target the galaxies & stars

14. MorphologicalTransformation to shink stars, using a star mask

15. Resample

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	3319713
PixInsight job	GZBJQN6Q6INX1I8PC0FWF3KNDGZTTL6N
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	09h54m55s.29
RA (top/left)	09h48m33s.28
RA (top/right)	09h48m55s.52
RA (bottom/right)	10h00m53s.45
RA (bottom/left)	10h01m18s.76

Dec (center)	+69°20′23″.7
Dec (top/left)	+70°00′53″.9
Dec (top/right)	+68°39′12″.8
Dec (bottom/right)	+68°39′08″.1
Dec (bottom/left)	+70°00′47″.4

Image Index:

Contribution Index (beta):

M81 & M82

M81 & M82

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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Image Index:

Contribution Index (beta):

M81 & M82

M81 & M82

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

Notifications

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IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

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