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Rich Reed demonstrated some of the NOAO large-chip cameras. In
particular we saw the Quad, front-side CCD, Loral head which appeared
to operate with
much the same sort of characteristics as our own cryogenic heads.
Hold-times , thermal load
,
power
required at
, using 1.5 litres of cryogen. Pixel
time is
(i.e. 4 amps with
integrator slopes).
Noise figures looked good,
for thick devices,
for thinned devices. He reported that he lost
2-3% in the blue after UV flooding and didnt recover later when
warmed to room temperature. He also reported a dark current for the
devices of
.