M82 "Cigar Galaxy" in HaLRGB (Aaron Freimark)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Cigar Galaxy · M 82 · NGC 3034

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M82 "Cigar Galaxy" in HaLRGB

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M82 "Cigar Galaxy" in HaLRGB

Preprocessing
1. Subframe Sector to weed out any subs with Eccentricity ≥ 0.7
2. Weighted Batch Processing
3. Drizzle Integration with a Region of Interest to crop to the cluster
4. Dynamic Background Extraction

Ha
1. EZ Denoise
2. StarXterminator
3. Arcsinh Stretch
4. Histogram Transformation
5. Convert to RGB
6. CurvesTransformation to make a nice shade of red
7. Histogram Transformation

L
1. EZ Denoise
2. Histogram Transformation

Mask
1. Start with L
2. Run StarXterminator
3. Histogram Transformation to brighten galactic center

RGB
1. ChannelCombination to combine R, G, and B
2. Color Calibration
4. EZ Soft Stretch
5. Extract CIE*L, darken background a bit, then re-apply using LRGB Combination with Saturation = 0.3; repeat
6. Convolution
7. LRGBCombination to apply L
8. StarXterminator to remove stars to a separate image
9. On stars, apply Morphological Transformation to erode star sizes
10. On starless RGB galaxy, apply the mask to protect the blue-hued galactic center, then apply PixelMath: 1-((1-RGB)*(1-Ha))
11. Curves Transformation to get the starburst just right
12. Bring stars back with PixelMath: $T + 0.8*stars

Mid-Hudson Astronomical Association (MHAA)
Northeast Imagers

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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	5529923
PixInsight job	3BGKN6RVK7JMWRLMERGDO4TSLCSGXAFR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h55m59s.999
RA (top/left)	09h59m50s.119
RA (top/right)	09h57m59s.710
RA (bottom/right)	09h52m03s.450
RA (bottom/left)	09h54m05s.167

Dec (center)	+69°40′44″.30
Dec (top/left)	+69°23′52″.12
Dec (top/right)	+70°04′55″.72
Dec (bottom/right)	+69°57′17″.57
Dec (bottom/left)	+69°16′28″.35

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M82 "Cigar Galaxy" in HaLRGB

M82 "Cigar Galaxy" in HaLRGB

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Image Index:

Contribution Index (beta):

M82 "Cigar Galaxy" in HaLRGB

M82 "Cigar Galaxy" in HaLRGB

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Description

Comments

Sky plot

Histogram

In these public groups

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