M42 (Xavier Ducrohet)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 Ori A) · 41 Ori C · 41 Ori D · 41 the01 Ori · 42 Ori) · 42 c Ori · 43 Ori) · 43 the02 Ori · 44 Ori) · 44 iot Ori · 45 Ori · Great Orion Nebula · HD294262 · HD294263 · HD36606 · HD36655 · HD36671 · HD36712 · HD36742 · HD36782 · HD36843 · HD36866 · HD36884 · HD36899 · HD36917 · HD36918 · HD36919 · HD36938 · HD36939 · HD36958 · And 51 more.

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M42

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M42

M42

I battled focuser issues and clouds. Probably need more time (especially the blue channel which was really impacted by clouds) but that'll be good enough for now.

Update (2024-02-19): California is still under heavy cloud, so learning new techniques. New revision with GHS and processing the nebual separately from the stars (Using StarXtermintor)

Update (2023-11-26): Diving again into this hobby, and saw a bunch of new Machine Learning based tools showing up, so I decided to use them to reprocess this. GraXpert definitively helped deal with the weird gradients. Also used BlurXterminator, and NoiseXterminator.

Previous Processing flow (in PixInsight):
WeightedBatchPreProcessing (Calibrate only)
SubFrameSelector
StarAlignment
ImageIntegation
DynamicCrop
EZ Denoise
AutomaticBackgroundExtraction
ChannelCombination
BackgroundNeutralization
PhotometricColorCalibration
HDRComposition
EZ Soft Stretch
HDRMultiScaleTransform
LRGB Combination

Original
B
Final
C

B

Description: Complete reprocess using GraXpert (AI) to tame the heavy gradient

Uploaded: ...

C

Description: New rev using GHS and processing nebula separately from stars

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	9244305
PixInsight job	4FNN94AEXXSAZN0YDP1BIR3BNIZJ29IY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h34m45s.36
RA (top/left)	05h32m35s.35
RA (top/right)	05h32m44s.30
RA (bottom/right)	05h36m55s.66
RA (bottom/left)	05h36m46s.80

Dec (center)	-05°21′08″.1
Dec (top/left)	-04°34′42″.0
Dec (top/right)	-06°09′08″.4
Dec (bottom/right)	-06°07′34″.7
Dec (bottom/left)	-04°33′11″.3

Image Index:

Contribution Index (beta):

M42

M42

Equipment

Acquisition details

Description

Comments

Revisions

B

C

Sky plot

Histogram

Image Index:

Contribution Index (beta):

M42

M42

Equipment

Acquisition details

Description

Comments

Revisions

B

C

Sky plot

Histogram

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