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ISS Wide Angle Camera
The ISS is a modified version of the slow scan vidicon camera
designs that were used in the earlier Mariner flights. The
ISS consists of two television-type cameras, each with 8 filters
in a commandable Filter Wheel mounted in front of the vidicons.
One has a low resolution 200 mm wide-angle lens with an aperture
of f/3, while the other uses a higher resolution 1500 mm narrow-angle
f/8.5 lens.
Unlike the other onboard instruments, operation
of the cameras is not autonomous, but is controlled by an
imaging parameter table residing in one of the spacecraft
computers, the Flight Data Subsystem (FDS).
ISS Science Objectives
- Observe
and characterize the circulation of the planetary atmosphere,
provide limits on atmospheric composition, and determine
the wind velocities in the regions observed.
- Map
the radial and azimuthal distribution of material in the
ring plane; search for new rings.
- Obtain
global multi-spectral coverage of all satellites; establish
rotation rates and spin axis orientations, study the surface
morphology of Triton at spatial resolutions less than
2 km; search for undiscovered satellites.
- Provide
support images to assist other onboard investigations
in their data reduction.
The following image shows the Wide Angle camera.
There
is also an image of the Narrow Angle Camera.
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