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 NGC 4725 


Optics: GSO RC 10" F8 2000mm - 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: SXV-AO-LF Active Optics - SX Lodestar
Dates/Times: 6/7 Maggio 2011
Location: Pian dell'Armŕ (PV) - Italy
Exposure Details: L:R:G:B => 210:50:50:50 = > (21x10):(5x10):(5x10):(5x10) all Bin1 [num x minutes]
Cooling Details: -20 °C
Acquisition: Maxim DL/CCD, Perseus
Processing: CCDStack2, PS CS2
Mean FWHM: 1.56 / 1.94 "
SQM-L: 21.63 / 21.35
NOTE Link to the same object realized in collaboration with STEFANO CONTI