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Old 17-05-2008, 09:09 PM
Ian Robinson
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Ian Robinson is offline
 
Join Date: Jan 2007
Location: Gateshead
Posts: 2,205
One word .... WOW !!!!

Not much interested in the moon .... the other photos I am wowwed by.

How's the camera cooling arrangement coming along. I would have thought that thermoelectric cooling would be more efficient and easier to impliment. I know TE is used in industrial thermography cameras and it is very efficient , I've used them in very hot environments ring next to steel furnaces and steel rolling mills (ambient temps over 50oC where we were where making observations and producing thermographic images).

TE cold sides maximum current ranges from 0.3 to 10 Amp, single stage DT - 74oC to 150oC in multi-stage configurations. See http://www.rmtltd.ru/tec_modules.htm...FRpciAodBi_W4g
In summer that would give you a chip temp about -40oC and a dark current <0.05 electrons / pixcel / sec !!!.
(http://www.sbig.com/sbwgifs/4020_dar...temp_graph.gif )

Last edited by Ian Robinson; 17-05-2008 at 10:05 PM.
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