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 M17 - Omega Nebula Wide Field 

M18 e Vdb121

Optics: Takahashi FSQ-106EDXIII F/3.6 383mm. - APO Refractor
Mount: SW HEQ5 Pro
Camera: ATIK 383L+ with SX USB Filter Wheel
Filters: Baader LRGB 2"
Guiding Systems: SX OAG with SX Lodestar
Dates/Times: 29 August 2011
Location: Pragelato - Turin - Italy
Exposure Details: R:G:B => 35:35:35 = > (7x5):(7x5):(7x5) All Bin1 [num x minutes]
Cooling Details: -20 C
Acquisition: Maxim DL/CCD, Perseus
Processing: CCDStack, PixInsight, PS CS2
Mean FWHM: 3.29
SQM-L: 21.07