M13 - Great Globular Cluster in Hercules - APOD 2021-05-20 ( Martin Dufour )

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: Hercules Globular Cluster · IC 4617 · M 13 · NGC 6205 · NGC 6207

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M13 - Great Globular Cluster in Hercules - APOD 2021-05-20

Powered byPixInsight

M13 - Great Globular Cluster in Hercules - APOD 2021-05-20

Imaging Telescopes Or Lenses: AG Optical Convergent FA12
Imaging Cameras: SBIG STXL-11002
Mounts: EQ8
Filters: R · L · Astrodon G · Astrodon B
Software: PixInsight

Dates:: May 13, 2021
Frames:: 175×300″(14h 35′)
Integration:: 14h 35′
Avg. Moon age:: 1.52 days
Avg. Moon phase:: 2.60%

RA center: 16h41m41s.68

DEC center: +36°27′37″.5

Pixel scale: 1.189 arcsec/pixel

Orientation: 151.263 degrees

Field radius: 0.771 degrees

More info:Open

Resolution: 3888x2579

File size: 5.1 MB

Data source: Backyard

Every year since 2011, when M13 is high enough in the sky, I can't resist the temptation to do it again and each time, I keep improving it. So here is my 2021 version. Thank you for looking at it and giving me your comments!

Globular Star Clusters
Astro-Québec

Please note: The following tables are updated every 24 hours.

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	Distinct awarded users	Total awarded images
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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
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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
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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	4501770
PixInsight job	6ICW6RJXTIPPUENGOSLXV9JTOJWFJS1G
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h41m41s.68
RA (top/left)	16h39m55s.78
RA (top/right)	16h45m30s.38
RA (bottom/right)	16h43m29s.46
RA (bottom/left)	16h37m52s.61

Dec (center)	+36°27′37″.5
Dec (top/left)	+35°46′40″.4
Dec (top/right)	+36°23′30″.2
Dec (bottom/right)	+37°08′26″.4
Dec (bottom/left)	+36°31′16″.5

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M13 - Great Globular Cluster in Hercules - APOD 2021-05-20

M13 - Great Globular Cluster in Hercules - APOD 2021-05-20

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M13 - Great Globular Cluster in Hercules - APOD 2021-05-20

M13 - Great Globular Cluster in Hercules - APOD 2021-05-20

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