Nebulae  Back to Photo Gallery - Nebulae
 NGC 1491 / SH2-206 Emission Nebula 

Full Resolution 1439 x 1408

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: 23 Gennaio 2011
Location: Pragelato (Torino) - Alps - Italy
Exposure Details: L:R:G:B => 70:30:25:30 = > (7x10)bin1:(6x5)bin2:(5x5)bin2:(6x5)bin2 [num x minutes]
Cooling Details: -20 °C
Acquisition: Maxim DL/CCD, Perseus
Processing: CCDStack2, PS CS2
Mean FWHM: 4.05
SQM-L: 21.22