A combination of 5 images - 2@10min; 2@15min; 1@20min - totaling 70 min at ISO800. No darks, no flats.
Raw processing in Canon's ZoomBrowser Raw Image Processor; DDP in ImagesPlus; Aligned and Average Combined in Registar. Enhancement in ThumbsPlus (Gamma/contrast boost/lightening).
(20051205_IC1805_Comb1-Avg-tp+.JPG)