False-colour infrared image of Saturn taken with the IRCAM camera mounted on the UK Infrared Telescope (UKIRT). It is a composite image of two exposures made at the H (1.65 microns) and K (2.2 microns) infrared bands. An exposure in the K band would not show the disc of Saturn (red),which is seen here thanks to the radiation emitted in the H band. This is probably caused by the presence of methane in the atmosphere of Saturn which absorbs the radiation in the K band. UKIRT is situated on the top of the dormant volcano Mauna Kea,Hawaii | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Royal Observatory, Edinburgh |
Bildgröße: | 4902 px × 3602 px |
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