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Old 13-10-2014, 12:05 PM
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Shiraz (Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
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In view of Peter's problems with a high end triplet, maybe the 814 is not the best bet with a fairly fast doublet - particularly an OSC version of the 814. As Peter says, problem seems to be that the Sony chips are very sensitive to violet, so if your scope produces a violet halo, it will be visible as blue. The small pixels of the 814 simply don't give aberrations anywhere to hide (they are about 1/6 the size of the Kodak 9 micron ones).

Otherwise, the Sony chips are excellent, with very high QE and good overload characteristics. The well depth issue is a bit of a non-issue - if you take short subs (and you can because of the low read noise), you can get just as good (or better) dynamic range compared to other chips. Cooling is also no big deal - provided you can get them down to 0C or below, dark current is not really an issue.

If you want to use the WO scope with a Sony chip, get a mono version and do NB - should be a killer combo with no CA issues.
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