This is a composite of 15 sec, 30 sec and 5 min subs taken over three evenings - I can only get around an hour on M42 between the neighbours trees! ED120APO, unmodified Canon 1100D at ISO 800, EQ6 EQMOD/PHD, stacked and aligned in DSS and finished in PS.
20 x 15 sec
20 x 30 sec
19 x 5 min subs - for a total of around an hour and a half.
I used the unmodified camera as I had been imaging comet Lovejoy with it and it seemed a shame to lose good imaging time by changing cameras!!