VIMS- Visual and Infrared Mapping Spectrometer

VIMS data sets are archived by the PDS (Imaging Node) at the Jet Propulsion Laboratory and USGS - Flagstaff.

Raw Data Products

Online Access      PDS-D Search

Higher Order Products
VIMS Rings Occultation Data -- Preliminary Version

Access via ISIS - The ISIS 3 software package can be used to process data from the Imaging Science Subsystem (ISS), Visual and Infrared Mapping Spectrometer (VIMS) and RADAR. You will find step-by-step instructions for cartographic and science data to create your own products.

A Guide to the Planetary Atlas that introduces search options and a tutorial on review and retrieval of Cassini data can be found at the Imaging Node.

Enhanced Search
Searches constrained by improved target definition and geometric parameters for the surfaces of Saturn and the satellites, as well as for rings observations, are available. more

Higher Order Products - Ring Occultation Profiles- reduced & calibrated optical depth profiles for Saturn's rings derived from VIMS stellar occultation observations.

Continuing Refinement of Documentation and Calibration

IR Pixel Timing

VIMS is being used in modes that were not a part of the initial instrument design. Because the VIMS infrared channel uses an articulating secondary mirror to produce a raster scan of the scene being observed, users who wish to construct geometry for individual pixels within the scan must deal with characteristics of the VIMS internal clock. A white paper, VIMS IR Pixel Timing, has been generated and the resulting refinement has been included in the ISIS software package.

Previous Radiometric Calibration Reports

VIMS Final Report of Radiometric Calibration 1/25/2018

We update the VIMS Radiometric Calibration, RC19, including data to the end of mission in September, 2017 and derive the calibration extending back to before the Jupiter fly-by in 2000. Clark et al. (2018) VIMS Wavelength and Radiometric Calibration 19, Final Report and the calibration data files are in in a gziped tar file. We derive the final radiometric calibration of the mission for the Visual and Infrared Mapping Spectrometer (VIMS) on Cassini. The VIMS instrument has undergone shifts in the wavelength calibration of the spectrometer after launch, with large shifts during the Jupiter fly-by in 2000, a period of stability until Saturn orbit insertion, then small shifts throughout the orbital tour until the end of mission in September, 2017. The wavelength shifts require a time-dependent radiometric calibration technique to be deployed to preserve radiometric accuracy. Herein we quantify the time-dependent wavelength shift, and describe a compensatory scheme that provides an accurate calibration for both specific intensity and I/F for VIMS measurements made during the Cassini Mission. We also discuss unresolved issues.

Other Useful Products and Other Resources for Interpreting the Data

See the Master Schedule for a time ordered listing of observations by all instruments.

Imaging Node Aids

SPICE - Archived Cassini SPICE ancillary data providing observation geometry (positions, orientations, instrument pointing, time conversions and the like) are available from the PDS NAIF Node.

Publications - A listing of team members to facilitate literature searches.