Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  M 13  ·  NGC 6205  ·  NGC 6207
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Messier 13 - The Great Globular Cluster in Hercules - RGB, 



    
        

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Messier 13 - The Great Globular Cluster in Hercules - RGB
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Messier 13 - The Great Globular Cluster in Hercules - RGB

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Messier 13 - The Great Globular Cluster in Hercules - RGB, 



    
        

            SoundIdea
Messier 13 - The Great Globular Cluster in Hercules - RGB
Powered byPixInsight

Messier 13 - The Great Globular Cluster in Hercules - RGB

Technical card

Imaging telescopes or lenses: Tele Vue NP101is

Imaging cameras: ZWO ASI1600mm-Pro

Mounts: Software Bisque Paramount MYT

Guiding cameras: ZWO ASI120mm-Mini

Software: Nighttime Imaging 'N' Astronomy  ·  Pixinsight

Filters: Baader Planetarium LRGB 31mm


Dates:May 15, 2020

Frames:
Baader Planetarium Blue 31mm: 110x30" (55') bin 1x1
Baader Planetarium Green 31mm: 110x30" (55') bin 1x1
Baader Planetarium Red 31mm: 110x30" (55') bin 1x1

Integration: 2h 45'

Avg. Moon age: 22.98 days

Avg. Moon phase: 41.19%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 21.45

Temperature: 5.00


Basic astrometry details

Astrometry.net job: 3528001

RA center: 16h 41' 44"

DEC center: +36° 28' 19"

Pixel scale: 1.441 arcsec/pixel

Orientation: 358.761 degrees

Field radius: 0.566 degrees


Resolution: 2001x2001

Data source: Traveller

Description

M13 is the best globular cluster to observe from northern latitudes, and one of the five best globular clusters visible from Earth. There is an estimated one million stars in this cluster, which is 100 light years across and around 25,000 light years away from us. Globular clusters contain some of the oldest stars in the Universe. By observing the number of stars that have evolved into red giants, globular clusters are estimated to be around 10 billion years old, twice as old as the Solar System and about as old as the Galaxy itself. The stars in globular clusters appear to be made only of the lightest elements, hydrogen and helium, which marks them as being part of the first generation of stars, formed before supernovae started to contaminate the star-forming gaseous regions with heavier elements.

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Messier 13 - The Great Globular Cluster in Hercules - RGB, 



    
        

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