I used up a whole clear night to get this image. Twelve fifteen minute exposures with in camera noise reduction on takes just over six hours. I am sure it was worth it.
Details
Canon 5DH, Orion 100ED with Astro Physics focal reducer so 640mm at F6.4, 12X15 min at ISO 400, corrected for flats with ImagesPlus, stacked with RegiStar, digitally developed with IP, levels and curves in PS.
Large image 1.9MB
http://members.optusnet.com.au/~trlee8/SMC_100ED.jpg
here is the SMC taken at 300mm from a previous post
3MB
http://users.bigpond.net.au/avandonk/SMC_m.jpg
Bert