This is a combination of four different single exposures blended together in PS.
Having a few guiding problems for some strange reason ATM hope to sort it out and get back to longer exposures again ASAP
Details
1x8min 1x4min 1x2min 1x25sec ISO 800
Canon 40D unmodded
Celestron C9.25 using 6.3 Focal reducer
Larger image
http://www.pbase.com/rangeviewobserv...73522/original
An added repro with the dark trap area revealed as suggested by Mr Sidonio
Thanks Mike
A larger size of both images can be compared here http://www.pbase.com/rangeviewobservatory/nebulae