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 NGC869 Perseus Double Cluster 

Full Resolution 2047 x 2047

Optics: GSO RC 8" F/8 1624mm. - Astrograph Ritchie-Chrétien
Mount: AP Mach1 GTO on Gemini Q-Lock tripod
Camera: ATIK 4000LE with SX USB Filter Wheel
Filters: Baader LRGB 2"
Guiding Systems: Celestron OAG with SX Lodestar
Dates/Times: 11 September 2010
Location: Col Basset (Torino) - Alps - Italy
Exposure Details: R:G:B => 10:10:10 = > (2x5):(2x5):(2x5) [num x minutes]
Cooling Details: -20 °C
Acquisition: Maxim DL/CCD, Perseus
Processing: Maxim DL/CCD, PS with Noel Action
Mean FWHM: 3.48
SQM-L: 21.68