Archived posting to the Leica Users Group, 1997/11/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> > I'm not sure about what you mentioned, but the super-cooled instruments > are used in astronomy are typically composed of electronic sensors, not > film emulsions. Examples of this are in the Hubble Space Telescope's > near infared camera and spectograph sensor, which is cooled by liquid > nitrogen. I would imagine that cooling film emulsions would make them > less, not more sensitive to light, since chemical reactions are usually > inhibited by such low temperatures. I recall reading about cooled emulsion (they definately used film) cameras about 15 years ago. I have absolutely no knowledge about the physics behind this, but I recall reading an article in an astronomy magazine descibing how to build one of these. Maybe someone else knows about these.