Thread: SBIG or QHY9
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Old 09-12-2009, 09:14 AM
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Kal (Andrew)
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Kal is offline
Join Date: Nov 2006
Location: Sydney
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Regarding the absolute QE debate, perhaps I am missing something, but on Gama's webpage for the QHY9 there is a graph showing absolute QE for the Sony KAF-8300 chip (link).

Microlensing is added to a CCD to reduce the effect that causes the drop in QE (to Effective QE) as some photons don't strike a part of the CCD that can record the strike. Adding a microlens helps ensure that a larger portion of the photons are recorded. Both the ST-8300 and the QHY9 use microlensed KAF-8300 CCD's yes?
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