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Another CCD
Hello Lee,
About " ... What about noise levels ... " what really matters is "signal to noise ratio" cooling (to reduce thermal noise and lower dark currents), choosing low noise amps, designing the CCD's to produce low readout noise etc. On the processing side one does dark frame subtraction, stacking images etc.
In my case I am interested in locating dim objects - comets and asteroids - so I use a sensitive low noise camera (MX916) that uses a Sony ICX083 CCD. The pixel size is 11.6 x 11.2 micro-metres (I use it in the binned mode giving 22 X 22 micron pixels) full well capicity is 300,000 e- and the readout noise of about 15e-. Dark current accumulation is 0.1 3e- per second.
For short exposures (5 min to 8 min max) dark frame and flat field processing is not required.
Rgds,
Jerry.
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