Instrument Information
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| IDENTIFIER |
urn:nasa:pds:context:instrument:vsk.phb2::1.1
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| NAME |
VSK-FREGAT
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| TYPE |
IMAGER
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| DESCRIPTION |
The scientific objectives of this experiment were the following: 1) MARS surveying - investigation of rock composition of the surface, cloudiness, dust amount in atmosphere; 2) NAVIGATION - updating of Phobos' and Deimos' orbits, their rotation periods, updating the data on Phobos shape, detailed imaging of the hovering region, spacecraft navigation; 3) PHOBOS investigations - surface structure studies, geological studies, topographic, morphometric and stereo mapping. VSK-FREGAT combines a three channel television (TV) camera with two short-focal-length channels and one longer-focal-length channel. The camera has charge-coupled device (CCD) detectors with photosensitive and memory sections and uses an 'electronic shutter' technique. At the entrance of the cameras a mirror is placed. When closed it protects the telescopes and permits photometric calibration from internal radiation sources. When opened, it permits nadir viewing of Phobos, while in two intermediate positions it allows panoramic viewing of Phobos, Mars and navigation targets.
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| MODEL IDENTIFIER |
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| NAIF INSTRUMENT IDENTIFIER |
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| SERIAL NUMBER |
not applicable
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| REFERENCES |
Avanesov, G.A., B.I.Bonev, F.Kempe, A.T.Bazilevsky, V.Boicheva, F.Kempe, A.T.Bazilevskii, T.Duxbury, 1989. Television Observations of Phobos, Nature, volume 341, p. 585-587.
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