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First light - Canon 6D with Canon 135mm f2 L series.
yahoo,
The clouds have finally gone after six weeks here in the centre of Australia. Absolutely frustrating but since rebuilding my dead computer last night my SBIG STT 8300m would not talk to my laptop so strapped the camera canon 6D unmodified with the new 135mm lens on and did 1h 40m on Orion with darks and flats applied.
I have no idea how I see similar images with perfect background sky using ISO 1600, f4, and 4 minute exposure times? Is there something I am doing wrong as my first picture is really just a smash out process to see the uneven and circular background through out the image. I have then cropped the central section but processed the hell out of this just to even be a little bit happy with it.
Should the set up I have tracking on an Astrophysics mount (was not guiding during this only tracking) give me these flat images??? I do have an expensive UV filter on front to protect my lens. Advice would be wonderful..
Mark
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