Globular cluster M3 ( Thomas LELU )

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Globular cluster M3

Imaging Cameras: ZWO ASI2400MC Pro
Mounts: Software Bisque Paramount MYT GEM
Filters: IDAS LPS-P3 2"
Accessories: ASA 3" 0.95x Wynne Coma Corrector · X-rite i1 Display Pro · EIZO ColorEdge CS2420
Software: Adobe Photoshop · Aries Productions Astro Pixel Processor (APP) · Open PHD Guiding Project PHD2 · Pleiades Astrophoto PixInsight · Software Bisque TheSkyX Imaging Bundle · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)
Guiding Telescopes Or Lenses: Sky-Watcher Evostar 72ED
Guiding Cameras: ZWO ASI290MM Mini

Dates:: April 26, 2022 · April 27, 2022 · April 30, 2022 · May 2, 2022
Frames:: IDAS LPS-P3 2": 46×180″(2h 18′) (gain: 145.00) -10°C bin 1×1
IDAS LPS-P3 2": 103×600″(17h 10′) (gain: 145.00) -10°C bin 1×1
Integration:: 19h 28′
Darks:: 15
Flats:: 30
Bias:: 100
Avg. Moon age:: 20.57 days
Avg. Moon phase:: 8.36%
Bortle Dark-Sky Scale:: 4.00

RA center: 13h42m11s.60

DEC center: +28°22′51″.1

Pixel scale: 2.764 arcsec/pixel

Orientation: 176.952 degrees

Field radius: 1.133 degrees

WCS transformation: thin plate spline

More info:Open

Resolution: 2258x1898

File size: 2.6 MB

Locations: Jardin, TOUL, Lorraine, France

Data source: Backyard

M3 is one of the largest globular clusters, with an estimated population of half a million stars.
But what makes M3 really special is the unusually high number of variable stars it contains. We continue to discover and to date there are no less than 274.

The cluster's distance is estimated at about 33,300 light-years (it is far beyond the center of our Galaxy) and its age is 11.39 billion years.

Its luminosity is estimated at 300,000 times that of our Sun. Finally, this swarm of stars is approaching us at a rate of 147.6 km/sec!

When the light emitted from this globular cluster "left" to strike my photographic sensor, we are in the age of carved stone: the Paleolithic!
While hunter-gatherers decorated certain caves in the south of France, the photons began their journey from this cluster to arrive 33,300 years later in my photographic sensor.

Original
Final
C

Star clusters

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds

	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

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Status	Advanced success
Started	...
Astrometry.net job	5773596
PixInsight job	D8I0US3DGS116FZ3LBJGJQVA7Z13MRBK
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m11s.60
RA (top/left)	13h38m28s.15
RA (top/right)	13h46m16s.16
RA (bottom/right)	13h45m58s.28
RA (bottom/left)	13h38m03s.87

Dec (center)	+28°22′51″.1
Dec (top/left)	+27°36′21″.3
Dec (top/right)	+27°41′51″.1
Dec (bottom/right)	+29°08′57″.9
Dec (bottom/left)	+29°03′25″.8

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