exellent...thankyou ezy..its very interesting for me to note that the amount of detail doesn't neccasarilly increase with the exposure time...my max to date has been 12 seconds, but i stack a lot more images...the dsi software seems to handle this quite well...some guys at my club save them as fits(i think) and fill up there hard drives with one picture, and use the editing software that comes with autostar...but the results aren't that much better(if at all) then useing the allign and combine method...but one of the best images taken with the dsi that i have seen is of m42, and stacked 120 2 second images...is a curious thing that somuch detail can be obtained by such short exposures...i have the polar allingment thing sussed out now, so my next batch will be interesting to compare...cheers ezzy..
