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Messier 31
Optic: Canon 400 mm f:5.6 L.
Camera: Modified Baader Canon 350D (Ha pass filter - see
here) at ISO800. Processing: Iris
software. Exposure: 50 minutes (10 x
5 minutes). Location: Pic du Midi (altitude 2860 meters, french Pyrénées).
Date: August 27.02, 2006.
For
display an enlarged view, click here (1732 x 1144 pixels), click
here.