M92 Globular Cluster (Richard H)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: HD156428 · HD156873 · IC 4645 · M 92 · NGC 6341

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M92 Globular Cluster

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M92 Globular Cluster

M92 or NGC 6341 is a globular cluster of stars in the northern constellation of Hercules. Discovered by Johann Elert Bode on December 27, 1777, then published in the Jahrbuch during 1779. It was inadvertently rediscovered by Charles Messier on March 18, 1781, and added as the 92nd entry in his catalogue. William Herschel first resolved individual stars in 1783.

Visibility
It is one of the brighter of its sort in apparent magnitude in the northern hemisphere and in its absolute magnitude in the galaxy, but it is often overlooked by amateur astronomers due to angular proximity to bright cluster Messier 13, about 20% closer. Though when compared to M13, M92 is only slightly less bright, but about 1/3 less extended. It is visible to the naked eye under very good viewing conditions. With a small telescope, M92 can be seen as a nebulous smudge even in a severely light-polluted sky, and can be further resolved in darker conditions.
Source: Wikipedia

Lum 10 x 90s bin 1x1
Red 25 x 120s bin 1x1
Grn 25 x 120s bin 1x1
Blu 25 x 120s bin 1x1

As an experiment, I did not use any calibration frames with the QHY 533M mono camera. I was surprised how well the data turned out without them.

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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
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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
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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
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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	7656666
PixInsight job	WOX6CWVIPH6OMFKVPDBN9JBP9RTL3UXE
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	17h17m07s.40
RA (top/left)	17h19m37s.33
RA (top/right)	17h14m36s.70
RA (bottom/right)	17h14m38s.86
RA (bottom/left)	17h19m35s.64

Dec (center)	+43°08′21″.9
Dec (top/left)	+43°35′36″.0
Dec (top/right)	+43°35′28″.9
Dec (bottom/right)	+42°40′57″.2
Dec (bottom/left)	+42°41′03″.1

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M92 Globular Cluster

M92 Globular Cluster

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M92 Globular Cluster

M92 Globular Cluster

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