Orion Nebula (M42, NGC 1976)
A diffuse nebula situated south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2000 times the mass of the Sun.
I was not able to collect as much light as I had planned due to the drift of the nebula over time towards the light polluted horizon. In all I collected 19 minutes, 10 1-min and 3 3-minute exposures at 400 ISO. I am very happy with the focus and the detail I was able to get with an un-modified T2i (550D) through a Stellarvue SV105 @ F3.5.