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Hi All,
As new DSLR Cameras seem to come on the market at regular intervals, with more and more pixels, (but smaller) and I believe closer together, decreasing the sensitivity in direct proportion, making the old EOS300D Camera with the largest Pixels ( 6.3 Mp at 7.4 microns in size) better ,than say the EOS450D (the latest model) with twice as many pixels (12.2 Mp) but only 5.2 microns in size, any ideas out there ??.

Also seeing CCD image sensors (some Nikon Cameras) are better than CMOS sensors-(Canon Cameras) would not the Nikon D70 having a CCD array be better than the Canon DSLRs (pixel size being equal)`for Astronomy work, of course modification of the UV/IR filters would be required, wonder has anyone out there had experience with using both types of Camera.

regards.......Jim