M3 - Globular Cluster_ (Steve Argereow)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: HD119081 · HD119391 · M 3 · NGC 5263 · NGC 5272

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M3 - Globular Cluster_

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M3 - Globular Cluster_

M3 was discovered by Charles Messier on May 3, 1764 and was first resolved into stars by William Herschel
around 1784. It's located about 33,900 light-years from Earth and is a large globular cluster, estimated to
contain at least 500,000 stars. With an age of about 8 billion years, M3 is young. It also contains a large
number of variable stars. At least 274 exist, more than any other globular, of which 133 have been
determined to be of the RR Lyrae type. M3 has a radius of 90 light-years.

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 ZWOASI2600MC-Pro Temp -10C, Binning 1 x 1, Gain 100 Offset 50

62 X 180 Second Exposures W/Optolong UV/IR Filter

20 Dark Frames/50 Flats
Total Integration Time: 3 Hours 6 Minutes
Acquisition with Astro Pixel Processor
Stacked with Deep Sky Stacker
Guiding PHD2
Processed with Astra Image
Photo taken from Seven Lakes, NC Bortle 4.5

Original
Final
B

B

Description: On my first rev there was too much green, so I decreased the green and increased blue.

Uploaded: ...

AstroBin Platform open discussions community forum
North Carolina Astronomers
SharpCap Users
ZWO ASI 2600MC PRO

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

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	Advanced success
Started	...
Astrometry.net job	7829864
PixInsight job	LO3TGD11N59BU94HPJJBX2C0FPYEP0L3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m01s.28
RA (top/left)	13h43m54s.30
RA (top/right)	13h44m26s.86
RA (bottom/right)	13h40m07s.82
RA (bottom/left)	13h39m37s.48

Dec (center)	+28°23′24″.2
Dec (top/left)	+27°49′50″.4
Dec (top/right)	+28°50′18″.5
Dec (bottom/right)	+28°56′51″.7
Dec (bottom/left)	+27°56′18″.9

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Contribution Index (beta):

M3 - Globular Cluster_

M3 - Globular Cluster_

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M3 - Globular Cluster_

M3 - Globular Cluster_

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