M 51 - Jim Misti data (MAILLARD)

M 51 - Jim Misti data

I was delighted again, trying to best deal with the raw data provided so amicably by Jim Misti, whom I thank again.

From what I have read about it, M51, also known as the Whirlpool Galaxy is a couple of galaxies, about 27.4 million a.l. from Earth in the constellation Canes Venatici, consisting of a massive regular spiral galaxy with an estimated diameter of 100,000 light-years and a small, irregular galaxy. It was discovered in 1773 by Charles Messier. Its easily visible spiral arms have earned it the nickname

" Whirlpool ". A supernova was observed in the galaxy in 1994, another in 2005, and a third appeared on June 1, 2011, according to the French magazine "Heaven and Space".

For this treatment, I used 3 software, IRIS, Siril, and Photoshop.

Iris allows me to process LRGB images in Fit format: bottom level of the sky, dynamic enhancement and contrast adjustment.

Siril used me mainly to combine RGB channels , color balancing treatments and background level.

I then realized the combination L and RGB with Photoshop and all the adjustments necessary to get a presentable image, I hope.

Thank you for any comments and/or advice.

Image acquisition by Jim Misti.

Ritchey-Chretien 32“ telescope

Camera SBIG STL 1100

Luminance 15x5 mn

5x5 mn RGB

2016

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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	Basic failed
Started	...
Astrometry.net job	4167773
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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