25 September 2015

           Cosmic Maelstrom       




       By    Alessandro Falesiedi   
www.alessandrofalesiedi.it )

OTA: Celestron C11 HD
Aperture:280 mm
Focal lenght: f20,f10, f7.3, f/6.3
CCD: Starlight Xpress H694 mono
Filter(s): Baader LHaRGB
Exposure Time: LHaRGB: L: 698 min Ha : 210 min;  R: 190min+ 210 halpha (25% 2013);  B: 90 min (34% 2013)
Mount: Avalon M1 Fast Reverse
Location: Viterbo (Italy) 323 mt

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