M100 Blowdryer Galaxy (Joe Niemeyer)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: M 100 · NGC 4312 · NGC 4321 · NGC 4323 · NGC 4328

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M100 Blowdryer Galaxy

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M100 Blowdryer Galaxy

This is an outlying galaxy in the Virgo Cluster called the Blowdryer Galaxy (M100). This beautiful target is referred to as a grand design intermediate spiral galaxy. These spirals are my favorite because you can see lots of detail in their arms. The Blowdryer Galaxy sits 56 Million light-years from Earth and is very faint at magnitude 9.5, hence difficult to image. Like the Milky Way, M100 has small companion galaxies, NGC 4328 above and NGC 4323 to the right. NGC 4323 is connected to M100 by a thin bridge of luminous matter and is tugging the adjacent spiral arm out of place. This image also captures galaxy NGC 4312 to the far left and tiny little galaxy IC 783 low and left of center.

This image is a cropped stack of thirty 300-second exposures at 2310mm focal length and relatively high gain, then calibrated with 20 each dark, flat, and dark flat frames, post-processed with StarNet++ and Photoshop.

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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
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Astrometry.net job	4605838
PixInsight job	n/a
PixInsight queue size	n/a
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M100 Blowdryer Galaxy

M100 Blowdryer Galaxy

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M100 Blowdryer Galaxy

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