A combination of 10 images - 10s, 20s, 30s, 60s, 3@120s and 3@180sec at ISO800.
Raw processing in Canon's ZoomBrowser Raw Image Processor; DDP in ImagesPlus; Aligned and Average Combined in Registar.
(See "Getting the Red Out - Balancing the Colors of a modified Canon Rebel XT" in the adjacent album.)
(20051129_M42_Comb1-Avg-TP+.jpg)