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CONTOUR Dust Analyzer (CIDA)

NSSDCA ID: 2002-034A-04

Mission Name: CONTOUR


The CONTOUR Dust Analyzer (CIDA) will be an improved version of the instruments flown on Vega and Giotto during the Halley encounter. CIDA will be mounted on the front of the spacecraft to look in the direction of flight during the encounters. The CIDA instrument is a mass spectrometer, which separates ions' masses by comparing differences in their flight times. The operating principle of the instrument is the following: when a dust particle hits the target of the instrument, ions are extracted from it by an electrostatic grid. The extracted ions move through the instrument and are measured by a detector. The flight times of the ions are then used to calculate their masses.

Alternate Names

  • CIDA
  • urn:nasa:pds:context:instrument:con.cida

Facts in Brief

Mass: 12 kg
Power (avg): 13 W

Funding Agency

  • NASA-Office of Space Science Applications (United States)


  • Planetary Science: Small Bodies

Additional Information

Questions and comments about this experiment can be directed to: Dr. David R. Williams



NameRoleOriginal AffiliationE-mail
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