The scientific ccd cameras I have seen have used a thermoelectric cooler (peltier) with circulating water (maybe with glycol). This method is a lot easier to implement than the liquid nitrogen approach :-)
Antti-Pekka --- Antti-Pekka Virjonen Computec Oy, Turku Finland Gsm: +358-500-789 753 www.computec.fi * www.estera.fi > -----Original Message----- > Indeed liquid Nitrogen cooled CCDs have been used on telescopes > for much > longer than they've been used for SLR type cameras. Still I don't > want > to have to carry of thermos full of liquid nitrogen around with me > all > the time, although it can be fun to play with sometimes. > > -Scott >
