M31
Three frame mosaïc : 18 - 19 september 2004 - 24 december 2005
Grand Colombier - 1500 m - Ain - France

Technical details :
FSQ-106
ST 10 XME (-30°C) - CFW8A - L filter
8 h total exposure
(4153 x 2148 pixel image - 1.7 Mo)
(2078 x 1074 pixel image - 604 ko)