M5 "A 13 Billion Year Old Globular Cluster in Serpens" (Steve Argereow)

Celestial hemisphere: Northern · Constellation: Serpens (Ser) · Contains: 5 Ser · IC 4537 · M 5 · NGC 5904 · The star 5 Ser

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M5 "A 13 Billion Year Old Globular Cluster in Serpens"

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M5 "A 13 Billion Year Old Globular Cluster in Serpens"

M5 is a superb globular cluster that's located close to the celestial equator in the constellation of Serpens (Caput). Shining at magnitude +5.7, it's visible to the naked eye under dark skies appearing as a faint "star". The cluster is large covering 23 arc minutes of apparent sky, which at a distance of 24,500 light-years corresponds to a spatial diameter of 160 light-years, making it one of the largest globulars in both apparent and actual size.

Information Credits: Home Free Star Charts

Telescope: Explorer Scientific 127mm CF APO Refractor f/7.5 (952mm Focal Length)
Explore Scientific X0.7 Reducer f/5.25 (667mm Focal Length)
Mount IOptron CEM40
Camera ZWOASI6200MC-Pro Temp -10C, Binning 1 x 1, Gain 100 Offset 50
ZWO EFW

71 X 180 Second Exposures W/Optolong L-Pro Filter
20 Dark Frames/20 flat frames
Total Integration Time: 3 Hours 33 Minutes
Acquisition with SharpCap
Stacked with Astro Pixel Processor
Guiding PHD2
Processed with Astra Image
Photo taken from Seven Lakes, NC Bortle 4.5

ZWO ASI 2600MC PRO
AstroBin Platform open discussions community forum

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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.

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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	5762184
PixInsight job	MP8H6QF6GSJJAO4L2PRUOFFO6IGBEWJG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	15h18m33s.14
RA (top/left)	15h21m04s.30
RA (top/right)	15h21m12s.97
RA (bottom/right)	15h16m02s.41
RA (bottom/left)	15h15m53s.41

Dec (center)	+02°04′46″.2
Dec (top/left)	+01°34′47″.7
Dec (top/right)	+02°31′37″.8
Dec (bottom/right)	+02°34′46″.3
Dec (bottom/left)	+01°37′54″.3

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M5 "A 13 Billion Year Old Globular Cluster in Serpens"

M5 "A 13 Billion Year Old Globular Cluster in Serpens"

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M5 "A 13 Billion Year Old Globular Cluster in Serpens"

M5 "A 13 Billion Year Old Globular Cluster in Serpens"

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