CaSSIS has acquired colour coverage of ~5% of the surface of Mars. But what's it missing?
The Colour and Stereo Surface Imaging System (CaSSIS) Resampled Data Record (CaRDR) is an attempt to answer that question. CaRDR is a near-global, four-band multispectral dataset at ~90 m/pixel, built by spectrally resampling the CRISM hyperspectral mapping archive into the exact colour bands of the CaSSIS instrument. The result is a consistent, CaSSIS-style view of ~99.9% of the Martian surface at a scale that sits between broad global surveys and the narrow footprints of high-resolution targeted imaging.
The dataset enables smarter targeting of future high-resolution observations by acting as a 'multispectral viewfinder' that provides surface context before a targeted image is acquired, and opens new opportunities to investigate surface composition and mineralogical variation at regional scales across Mars.
The CaRDR Dataset (LINK) is available on the Natural History Museum's Data Portal.
McNeil and Stabbins (in prep)
McNeil and Stabbins (in prep)