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Cassini–Huygens Probe

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Author Topic: Cassini–Huygens Probe  (Read 195 times)
Abraxas
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« on: June 21, 2007, 01:52:39 am »



Contrast-enhanced version of surface image

Descent Imager/Spectral Radiometer (DISR)

This instrument made a range of imaging and spectral observations using several sensors and fields of view. By measuring the upward and downward flow of radiation, the radiation balance (or imbalance) of the thick Titan atmosphere was measured. Solar sensors measured the light intensity around the Sun due to scattering by aerosols in the atmosphere. This permitted calculation of the size and number density of the suspended particles. Two imagers (one visible, one infrared) observed the surface during the latter stages of the descent and, as the probe slowly spun, they built up a mosaic of pictures around the landing site. In addition, a side-view visible imager obtained a horizontal view of the horizon and of the underside of the cloud deck. For spectral measurements of the surface, a lamp was switched on shortly before landing to augment the weak sunlight.
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