M51 (Adam Block) - AstroBin

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4277 · IC 4278 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

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M51

Link: https://www.adamblockphotos.com/m51-keith-allred.html

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M51

Link: https://www.adamblockphotos.com/m51-keith-allred.html

This is an image I processed for one of my masterclasses at AdamBlockStudios.com . The data was kindly provided by my friend Keith Allred. Although it isn't deep by today's standards (this is an HaLRGB image with around 3 hours in each filter)- the data was wonderful to work with and allowed me to show a number of noteworthy techniques (including inclusion of H-alpha via continuum subtraction, HDRMT, Lab color, GHS stretching and more...)

The class from which this comes is here:
https://www.adamblockstudios.com/categories/m51

The image was also processed partially using a forthcoming AI-based sharpening tool.
Be certain to click the image at the link above to scroll around!

HaLRGB 180:220:180:180:180 minutes

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
Artificial satellite

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	...
PixInsight job	K1VGMXVU5EOLWQH5L2Y9EJX5S1N61AKN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h29m51s.237
RA (top/left)	13h30m54s.170
RA (top/right)	13h30m49s.132
RA (bottom/right)	13h28m47s.751
RA (bottom/left)	13h28m54s.340

Dec (center)	+47°13′39″.46
Dec (top/left)	+46°57′27″.80
Dec (top/right)	+47°30′25″.90
Dec (bottom/right)	+47°29′49″.14
Dec (bottom/left)	+46°56′51″.39

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M51

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