M3Global Cluster-RGB-Meade 80 ED triplet-Orion flattener-ASI 1600 MM-Pro-crop (Adel Kildeev)

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

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M3Global Cluster-RGB-Meade 80 ED triplet-Orion flattener-ASI 1600 MM-Pro-crop

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M3Global Cluster-RGB-Meade 80 ED triplet-Orion flattener-ASI 1600 MM-Pro-crop

M3 is one of the largest and brightest star clusters, and is made up of around 500,000 stars. It is located at a distance of about 33,900 light-years from Earth, the cluster spans about 220 light-years. It is estimated to be 8 billion years old, making M3 one of the oldest formations in our galaxy. To put that in perspective, this nebula was already half its current age when our own Sun was formed.

Despite the fact that it is farther from us than the center of our own galaxy, M3 is visible with just the slightest of optical aid. This is largely because it contains 274 known variable stars, which is by far the highest number found in any globular cluster. It contains at least 133 RR Lyrae variables – along with a surprising number of Blue Straggler Stars – blue main-sequence stars which appear youthful. Since all stars in globular clusters are believed to be about the same age, it is possible these stars have had their outer layers stripped away while passing through the dense core region of M3. Messier 3 also commands about 760 light years of space – meaning that it keeps all stars within that distance tied to its rich core. The overall abundance of elements other than hydrogen and helium, Messier also has a relatively high abundance of heavier elements – making it “metal-rich”. Messier 3 (M3) – The NGC 5272 Globular Cluster. Tammy Plotner (c)

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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.
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Status	Advanced success
Started	...
Astrometry.net job	2050720
PixInsight job	S0GZZBJ8TW7S25XLNEGQTBTW3QPSROSR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m07s.45
RA (top/left)	13h39m03s.16
RA (top/right)	13h43m57s.73
RA (bottom/right)	13h45m11s.69
RA (bottom/left)	13h40m18s.79

Dec (center)	+28°22′10″.2
Dec (top/left)	+28°29′42″.8
Dec (top/right)	+28°55′36″.1
Dec (bottom/right)	+28°14′16″.7
Dec (bottom/left)	+27°48′32″.4

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M3Global Cluster-RGB-Meade 80 ED triplet-Orion flattener-ASI 1600 MM-Pro-crop

M3Global Cluster-RGB-Meade 80 ED triplet-Orion flattener-ASI 1600 MM-Pro-crop

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M3Global Cluster-RGB-Meade 80 ED triplet-Orion flattener-ASI 1600 MM-Pro-crop

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