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Contains:  M 3, NGC 5272
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Messier 3, Globular Cluster, 





    
        

            Big_Dipper
Messier 3, Globular Cluster

Messier 3, Globular Cluster

Technical card

Imaging telescope or lens:Orion Optics UK CT10

Imaging camera:Atik 4000

Mount:Skywatcher AZ EQ6 GT

Guiding telescope or lens:Omegon Modul Finder 50/230

Guiding camera:Lacerta M-Gen

Focal reducer:Tele Vue Parracor 1.15

Software:Pixinsight 1.8Artemis CaptureGuide 9.0

Filter:Astronomik LRGB 1.25" Type IIc

Accessory:Atik EFW2-1 9x1.25"

Resolution: 1787x1792

Dates:Jan. 30, 2019

Frames:Astronomik LRGB 1.25" Type IIc: 72x180" -25C bin 1x1

Integration: 3.6 hours

Darks: ~20

Flats: ~80

Bias: ~120

Avg. Moon age: 24.66 days

Avg. Moon phase: 24.52%

Astrometry.net job: 2666857

RA center: 205.548 degrees

DEC center: 28.385 degrees

Pixel scale: 1.149 arcsec/pixel

Orientation: 359.027 degrees

Field radius: 0.404 degrees

Locations: Homeobservatory , Roding, Bayern, Germany

Data source: Backyard

Description

Charles Messier entdeckte am 3. Mai 1764 diesen beeindruckenden Kugelsternhaufen im Sternbild Jagdhunde. Mit über 500 000 Sternen gehört er zu den Sternreichsten dieser Art. Sein Gezeiten Durchmesser beträgt 226 Lichtjahre in einer Entfernung von 33900 Lichtjahren. Die Ausdehnung beträgt ca. 18 Bogenminuten. Bisher sind 224 Variable Sterne nachgewiesen. Mit rund 4% an schweren Elementen im Vergleich zur Sonne gilt Messier 3 als sehr metallreich und ist Prototyp dieser Klasse von Kugelsternhaufen.
Charles Messier discovered on 3 May 1764 the impressive globular cluster in the constellation Canes Venatici. With over 500,000 stars, it is one of the star-rich of its species. Its tidal diameter is 226 light-years at a distance of 33900 light-years. The expansion is about 18 arcmin. So far, 224 variable stars have been detected. With around 4% of heavy elements compared to the Sun, Messier 3 is considered to be very metal-rich and is the prototype of this class of globular clusters.

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Big_Dipper
Big_Dipper
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Messier 3, Globular Cluster, 





    
        

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