Last modified on 04 March 2002.


What a wonderful world

Photos and travel accounts from around the world



Photo Calendar 2002 - 3rd of February 2002

Copyright: R. Rekola

The liquid nitrogen container. Liquid nitrogen is used to cool CCD-cameras down to -100°C or colder. This is done to avoid noise in the images. Cooling has to be done usually once or twice a day - depending on the instrument.












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Created by: Rami T. F. Rekola