M51 HaLRGB (Jason)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4263 · IC 4278 · M 51 · NGC 5169 · NGC 5194 · NGC 5195 · NGC 5198 · Whirlpool Galaxy

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M51 HaLRGB

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M51 HaLRGB

Original
B
C
E
Final
F

B

Description: Significantly culled data (about 6 hours!) to remove some high cloud and full moon contamination.

26/02/21 0,0,0,0,30
20/03/21 0,15,09,10,01
23/03/21 5,0,0,0,0
30/03/21 3,0,0,0,0
06/06/21 0,31,29,30,0
07/06/21 0,10,22,20,46

Ref Images
L 287

--------------------------------
WBPPWGHT assigned in batch pre-processing
LRGB Cropped
DBE Subtraction
RGB Combined
PCC
------------------------
DBE_DIV RGB
Soft Stretch

L Deconvol
L HDR Layers =5 Iterations =4 (to lightness, lightness mask + deringing)
Added L to RGB (saturation = 0.4, Chroma NR On)
EZ Star reduction

Uploaded: ...

C

Description: WBPPWGHT assigned in batch pre-processing
Alignment with NO FRAME ADAPTION
HaLRGB Cropped
DBE Subtraction
RGB Combined (25%H + 75%R)
PCC
*RGB*
DBE Subtraction
Soft Stretch

L Deconvol
Denoise
Soft Stretch
EZ HDR
L add with 75% mix

Uploaded: ...

E

Description: Revised Dark calibration files

Uploaded: ...

F

Description: Revisited the data with batch gradient script and then reprocessed splitting the galaxy from the stars and then recombining (60%)

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	4721856
PixInsight job	25CYBUBOMW0BXZTLMT2NWWN92F3UIKW1
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	13h30m11s.20
RA (top/left)	13h33m20s.61
RA (top/right)	13h33m00s.44
RA (bottom/right)	13h26m57s.13
RA (bottom/left)	13h27m25s.60

Dec (center)	+47°14′03″.1
Dec (top/left)	+46°40′20″.2
Dec (top/right)	+47°50′56″.3
Dec (bottom/right)	+47°47′19″.9
Dec (bottom/left)	+46°36′54″.3

Image Index:

Contribution Index (beta):

M51 HaLRGB

M51 HaLRGB

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Image Index:

Contribution Index (beta):

M51 HaLRGB

M51 HaLRGB

Equipment

Acquisition details

Comments

Revisions

B

C

E

F

Sky plot

Histogram

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