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GIOTTO Dust Detector (DID) observations of 1P/Halley
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Citation |
McDonnell, J. A. M, GIOTTO DUST IMPACT DETECTOR SYSTEM DATA V1.0,
GIO-C-DID-3-RDR-HALLEY-V1.0, NASA Planetary Data System, 1992. |
Digital Object Identifier (DOI) |
10.26007/a718-6y64
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Data Set Abstract |
Dust Impact Detection System (DIDSY) consists of six independent
subsystems with the primary aim of registering the impacts of all
particulates of significant mass incident on the probe during the
post-perihelion encounter with Comet Halley in 1986. Mounted on
Giotto's front dust shield, the detectors will determine the
mass spectrum of the dust, with a limiting sensitivity of some
10^^-17^^ g, increasing to the largest grain masses encountered
along Giotto's trajectory through the cometary environment
with an ultimate spatial resolution of some 70 km. An additional
detector is located on the rear shield to monitor those dust
particles (m > ~ 5 X 10^^-7^^ g) that are able to penetrate
the front dust shield. An ambient plasma monitor is also
incorporated into DIDSY to measure the inJpact plasma generated
by both dust and gas impacts on the spacecraft. The system is
controlled and its data processed by a microprocessor-based
system that allows the wide range of anticipated impact rates
(varying from a few per minute, to ~ 10^6 s^^-1^^ at closest
approach) to be handled. The instrument weighs 2.26 kg and
consumes 1.9 W of power during normal operation. |
Search/Access Data |
SBN Comet Website
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Additional Information |
Mission Information |
GIOTTO
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Data Set Information |
GIO-C-DID-3-RDR-HALLEY-V1.0 |
Instrument Host Information |
GIO
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Instrument Information |
DID
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Target Information |
HALLEY
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