H-Alpha  Back to Photo Gallery - H-Alpha
 SH2-155 - The Cave Nebula 




Optics: Takahashi FSQ-106EDXIII F/3.6 383mm. - APO Refractor
Mount: AP Mach1 GTO on Gemini Q-Lock tripod
Camera: ATIK 383L+ with SX USB Filter Wheel
Filters: Baader H-Alpha 7nm 2"
Guiding Systems: SX OAG with SX Lodestar
Dates/Times: 9 August 2011
Location: Pragelato - Turin - Italy
Exposure Details: H => 120 = > (8x15) all Bin1 [num x minutes]
Cooling Details: -20 C
Acquisition: Maxim DL/CCD, Perseus
Processing: CCDStack, PixInsight, PS CS2
Mean FWHM: 2.90
SQM-L: 75% Moon