Liquid nitrogen cooling
The CCD detectors in the FORS instrument are kept very cold using liquid Nitrogen, in order to minimize the adverse effect of the heat during very long exposures. Without this cooling, it would not be possible to take images lasting more than a second.
Credit:ESO
About the Image
| Id: | liqu_nitrogen_fill_dec2004 |
| Type: | Photographic |
| Release date: | 3 December 2009, 23:21 |
| Size: | 4180 x 2843 px |
About the Object
| Name: | Very Large Telescope |
| Type: | Unspecified : Technology : Observatory : Instrument |
| Category: | Paranal |
