Mission Elapsed Time
What is CRISM?
The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) is 1 of 6 science experiments on the Mars Reconnaissance Orbiter, which takes measurements of both the surface and the atmosphere of Mars.
CRISM data are used to find minerals’ spectral signatures on Mars. Different minerals form in different settings, ranging from ancient lakes and deltas to volcanic lava flows. We use the mineral evidence to understand how different geologic processes have shaped the planet over time. CRISM also observes the polar ice caps and atmosphere to understand seasonal and year-to-year variations in the Martian weather.
July 29, 2016
June 15, 2016
May 3, 2016
March 17, 2016
Read about the career paths that led members of the CRISM team into space exploration.
CRISM Spectral Library
The MRO CRISM Spectral Library is an analysis tool for interpreting CRISM data. it currently contains 2,260 spectral analyses of 1,134 Mars-analog samples, all measured under desiccating conditions so that materials that adsorb water look as they would on Mars. This was made avaialble to the community through the PDS on the day that MRO entered Mars orbit!
Hi-Res Image Map
What is the difference between hyperspectral and multispectral images?
The difference is a little fuzzy. In general, a hyperspectral image has many tens to hundreds of different colors, whereas a multispectral image can have a few to a few tens of colors. For CRISM, hyperspectral generally refers to images with hundreds of wavelengths, all the way through all 544, whereas multispectral refers to images with tens of wavelengths (usually 72) across both detectors.
MSL Site Selection
CRISM has been supporting landing site selection for the Mars Science Laboratory (MSL) mission with hundreds of observations that have been converted to color and mineral indicator maps. [ more ]
CRISM uses colors in reflected sunlight to investigate the mineralogy of the Martian surface and the composition and processes of the Martian atmosphere.