Hyper Spectral Imager (HySI – ISRO)
The Hyper Spectral Imager was a CMOS camera that performed mineralogical mapping of the lunar surface in the 400–900 nm band, with a spectral resolution of 15 nm and a spatial resolution of 80 m.
By splitting reflected sunlight into 64 contiguous spectral channels, HySI could distinguish subtle differences between lunar minerals such as pyroxenes, olivines and plagioclase feldspar across mare and highland terrains, complementing the higher-spectral-range observations of the NASA Moon Mineralogy Mapper. HySI was developed by ISRO's Space Applications Centre, Ahmedabad.