H alpha enhanced M1
M1, the Crab nebula is the first of the Messier objects and a favorite astrophoto target. It is the reminent of a supernova explosion observed by Chinese astronomers in 1054.
20" f/4.1 telescope at the SDG observatory of Garry Sedun in Arizona.
Camera - SBIG ST2000 XM.
Guidescope WO 80mm f/6.8 APO.
Mount - Paramount ME
10 Blue, 10 Green, 7 red and 14 clear frames of 240s
17 - 5m exposures with Ha filter