M100 (Tom Harrison)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: M 100 · NGC 4321 · NGC 4323 · NGC 4328

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M100

Link: http://www.manoprietoobservatory.com/plogger/index.php?level=picture&id=126

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M100

Link: http://www.manoprietoobservatory.com/plogger/index.php?level=picture&id=126

M100 is an example of a grand design spiral galaxy found in the direction of the Constellation Coma Berenices at a distance of approximately 55 Million Light-Years. It is one of the brightest galaxies in the Virgo Cluster numbering around 2,500 galaxies. It is large, with a diameter of 160,000 Light-Years. Two companion galaxies, NGC 4323 and NGC 4328 appear as two bright blobs above and to the right of M100. The morphology of M100 is probably shaped by the two companion galaxies. The core of M100 is surrounded by a ring of bright dust clumps called a circumnuclear ring. Five stars in M100 have gone supernova in the recorded history of observations. M100 has many dark dust lanes and many clusters of young blue stars lighting up the arms and dust lanes. M100 shines at a magnitude of 9.4. Imaged with a 12.5" Ritchey-Chretien design RCOS Truss telescope at f9, using a Paramount ME mount and an SBIG STL6303E camera, guided by the SBIG Guide camera off-axis. Image completed in June 2013 at the Manoprieto Observatory, Fort Davis, TX. LRGB:480:150:180:240, with Tru-Balance Gen II 2" filters. Processed with MaxIm DL, CCDStack and Photoshop CS3

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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 success
Started	...
Astrometry.net job	6561826
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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