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Contains:  M 13, Great Cluster in Hercules, NGC 6205
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Hercules Globular Cluster Messier M13, 





    
        

            Claus
Hercules Globular Cluster Messier M13

Hercules Globular Cluster Messier M13

Technical card

Imaging telescope or lens:TS Optics 8" f4

Imaging camera:Canon EOS 600d

Mount:Skywatcher AZ EQ6 GT

Focal reducer:TeleVue Paracorr Type 2

Software:Photoshop CS6

Resolution: 1920x1295

Dates:May 19, 2013

Frames: 22x120" ISO800

Integration: 0.7 hours

Darks: ~10

Flats: ~10

Bias: ~10

Avg. Moon age: 8.63 days

Avg. Moon phase: 63.16%

Mean FWHM: 2.50

Temperature: 8.00

Astrometry.net job: 103009

RA center: 250.418 degrees

DEC center: 36.459 degrees

Pixel scale: 1.701 arcsec/pixel

Orientation: 178.399 degrees

Field radius: 0.547 degrees

Locations: Nuremberg, Germany, Nuremberg, Bavaria, Germany

Description

Messier M13 the Hercules Globular Cluster:

Discovered by E. Halley in 1714 and catalogued by Charles Messier 1764.
About 150 lightyears in diameter, and composed of hundred thousand stars.

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Author

Claus
Claus
License: None (All rights reserved)
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Hercules Globular Cluster Messier M13, 





    
        

            Claus