QE Comparison

This graph compares the quantum efficiency of several popular CCD chips.
It can be readily seen that the KAF blue enhanced chips (E) are much more
efficient than the earlier (KAF) versions and are essentially just as sensitive
as the venerable ST6. Considering their small pixel size (unlike the ST6 and SITe)
and low dark current, they are an excellent choice for the amateur imager,
although none of the other chips can compare to the outstanding performance
of the backside thinned SITe and Tektronics chips

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