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 M38 Open Star Cluster 

Full Resolution 1023 x 1023

Optics: GSO RC 10" Reduced to F/5.3 1320mm. With AP-CCDT67 - 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: SX OAG with SX Lodestar
Dates/Times: 25 February 2011
Location: Pragelato - Torino - Italy
Exposure Details: R:G:B => 12:9:9 = > (4x3):(3x3):(3x3) all bin2 [num x minutes]
Cooling Details: -20 °C
Acquisition: Maxim DL/CCD, Perseus
Processing: CCDStack2, PS CS2
Mean FWHM: 6.76
SQM-L: 21.1