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Working with Cassini ISS Data


About Cassini ISS (Imaging Science SubSystem)


Instrument Overview

The Imaging Science SubSystem (ISS) is used for multispectral imaging of Saturn, Titan, rings, and the icy satellites to observe their properties.

See: The Cassini Mission

Technical Details

The ISS consists of two framing cameras. The narrow angle camera (ISS-NAC) is a reflecting telescope with a field of view of 0.35 degrees. The wide angle camera (ISS-WAC) is a refractor with a field of view of 0.35 degrees. Each camera is outfitted with a large number of spectral filters: 23 different filters for the NAC and 17 for the WAC spanning wavelengths of light from ultraviolet to the near-infrared. Each camera is a charged coupled device (CCD) detector consisting of a 1024 square array of pixels. The data system allows many options for data collection, including choices for on-chip summing and data compression.

References & Related Resources

Cartographic Processing ISS Data


Level 0 Processing

  1. Data Acquisition
  2. Ingestion
  3. SPICE
  4. Raw Camera Geometry

Level 1 Processing

  1. Radiometric Calibration
  2. Noise Removal

Level 2 Processing

  1. Map Projecting