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 M13 






Optics: Takahashi FSQ-106EDXIII F/5 530mm. - APO Refractor
Mount: AP Mach1 GTO on Gemini Q-Lock tripod
Camera: ATIK 383L+ with SX USB Filter Wheel
Filters: Baader LRGB 2"
Guiding Systems: SX OAG with SX Lodestar
Dates/Times: 20/24 May 2011
Location: Pragelato - Turin - Italy
Exposure Details: L:R:G:B => 104:6:6:6 = > (13x8):(2x3):(2x3):(2x3) [num x minutes]
Cooling Details: -20 C
Acquisition: Maxim DL/CCD, Perseus
Processing: CCDStack2, PS CS2, GradientX
Mean FWHM: 3.02"
SQM-L: 21.1