Yet another combined shoot by Andy D'arienzo and myself usng different cameras (DSLR and CCD) and scopes 700 miles apart. This is my original RGB image (seen on flickr) reprocessed from the 10th and 12th September using the modded Canon 5D Mark II on the TMB 130 together with Andy's layer of hydrogen alpha that he shot last week in Long Island New York, using an FLI ML8300 Mono CCD on his TMB92SS at F4.4. I also added some 1 minute sub exposures that were layered into the final image of HA RED, HAL and RGB to prevent the area surrounding the trapezium from being totally blown out. Here is some information regarding the equipment we both used Terry's Location: Fremont, Michigan Date of Shoot: 10th and 12th September 2010 Camera: modified Canon 5D Mark II 4x15 min sub exposures at 400ISO with flat and dark frames. 6x5 min sub exposures at 100ISO with flat and dark frames. 30x1 min sub exposures at 200ISO with flat and dark frames. Scope: TMB130SS F7 Refractor using WO/TMB 2.7" Field Flattener. Auto-guided with Orion Auto Guider on Stellarvue 10x60 Mount: Mountain Instruments MI-250 (pier mounted) Image Acquired using Nebulosity II, stacked with Deep Sky Stacker, processed and re-sized with Photoshop CS3. Andy's Location: Long Island, New York Date of shoot: 19th November 2010 Camera: FLI ML8300 Mono CCD FLI CFW 2-7 Filter wheel 11x20 minute sub exposures with hydrogen alpha filter Scope: TMB 92ss F5.5 Refractor At.8 Reducer CGE Mount Star shoot Autoguider Borg Mini 50 Guidescope Astronomik 50mm Round filters Aquisition and Stacking: CCD Stack Post processing: Photoshop CS/2