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Imaging Science Subsystem (ISS)

NSSDC ID: 1997-061A-02
Mission Name: Cassini
Principal Investigator: Dr. Carolyn C. Porco

Description

The Imaging Science Subsystem (ISS) on Cassini is intended to study Saturn, Titan, and the other satellites of Saturn. The primary science objectives of the ISS are to: (1) map the three-dimensional structure and motion of the atmospheres of Saturn and Titan; (2) study the composition, distribution, and physical properties of clouds and aerosols; (3) examine scattering, absorpotion, and solar heating within the atmospheres of Saturn/Titan; (4) search for lightning, aurorae, and airglow; (5) investigate the gravitational interactions among Saturn's rings and satellites; (6) determine the nature and rate of energy and momentum transfer within the rings; (7) determine the thickness of the rings as well as the size, composition, and physical nature of the ring particles; (8) map the surfaces of the satellites and determine the composition of their surface materials; and, (9) measure the rotation states of the satellites.

To accomplish these goals, the ISS consists of a wide angle camera and a narrow angle camera. The wide angle camera (WAC) telescope is a 20 cm (f/3.5) refractor while the narrow angle camera (NAC) telescope is a 2 m (f/10.5) refractor. The WAC is planned to cover a wavelength range from 380-1100 nm with 18 separate filters while the NAC covers a range of 200-1100 nm with 24 filters. The WAC's field-of-view is 3.5 degrees with an angular resolution of 60 microradians/pixel. The NAC's field-of-view is 0.35 degrees with an angular resolution of 6.0 microradians/pixel. The imaging plane of each will contain a 1024 x 1024 element CCD array.

Alternate Names

  • ISS

Facts in Brief

Mass: 57.83 kg
Power (avg): 30.0 W
Bit rate (avg): 115.2 bps

Funding Agency

  • NASA-Office of Space Science (United States)

Disciplines

  • Planetary Science: Geology and Geophysics
  • Planetary Science: Rings
  • Planetary Science: Small Bodies

Additional Information

Questions or comments about this experiment can be directed to: Dr. Edwin V. Bell, II.

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Carl D. MurrayTeam MemberQueen Mary and Westfield College, Londonc.d.murray@qmul.ac.uk
Dr. Steven W. SquyresTeam MemberCornell Universitysws6@cornell.edu
Dr. Anthony D. Del GenioTeam MemberNASA Goddard Institute for Space Studiesadelgenio@giss.nasa.gov
Dr. Joseph F. VeverkaTeam MemberCornell Universityjfv4@cornell.edu
Dr. Peter C. ThomasTeam MemberCornell University 
Dr. Alfred S. McEwenTeam MemberUS Geological Surveymcewen@pirl.lpl.arizona.edu
Dr. Henry C. Dones, Jr.Team MemberNASA Ames Research Centerluke@boombox.arc.nasa.gov
Dr. Robert A. WestTeam MemberNASA Jet Propulsion Laboratoryrwest@mail1.jpl.nasa.gov
Dr. Gerhard NeukumTeam MemberDeutsche Forschungsenstalt fuer Luft-und Raumfahrt 
Dr. Andre BrahicTeam MemberObservatoire de Paris, Meudonandre.brahic@obspm.fr
Dr. Andrew P. IngersollTeam MemberCalifornia Institute of Technologyapi@gps.caltech.edu
Dr. Joseph A. BurnsTeam MemberCornell Universityburns@astrosun.tn.cornell.edu
Dr. Torrence V. JohnsonTeam MemberNASA Jet Propulsion Laboratorytjohnson@jpltvj.jpl.nasa.gov
Dr. Carolyn C. PorcoTeam LeaderUniversity of Arizonacarolyn@raven.lpl.arizona.edu
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