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Name / Constellation

M 13

 Other: NGC 6205

Her
Coordinates AR: 16h 41m 41.44sec - Dec: +36° 27' 36.9"
Optics Richtey-Chretien Officina Stellare 10"@F8 Carbon Truss
Camera-Mount SBIG ST10XME/CFW10/AO8/VSI Zerotator/Remote Guider - 10Micron GM2000 QCI Mount
Filters Astrodon LRGB TruBalance (Gen 1)
Exposure
  • Luminance
  • Red
  • Green
  • Blue
  • 21 x 180 sec - 63 min
  • 10 x 180 sec - 30 min
  • 10 x 180 sec - 30 min
  • 10 x 180 sec - 30 min
  • UNBINNED
  • UNBINNED
  • UNBINNED
  • UNBINNED
Location / Date Promiod (Valle D'Aosta-Italy) - 4 / 5 jul 2013
Seeing 2" @ 0.71 arcosec/pixel unbinned - SQM 20.9
Note  
Acquisition MaxIm DL
Processing MaxIm DL - Adobe Photoshop CS4
Comment

E. Halley noted M13 the first time on 1715 and C. Messier later on 1764 when icluded the cluster into his cathalog. M 13 is one of the most viewed obiects in the Sky. It ha apparent mag 5.8 and size 23'. Its diameter is about 165 light-years. The age of M 13 has been extimated between 12-15 billion years and it'0s 23157 light-years away fron the Earth.