Moderate resolution imaging spectrometer‐tilt (modis‐t)

Abstract The Moderate Resolution Imaging Spectrometer‐Tilt (MODIS‐T) instrument is being constructed for flight on the Earth Observing System (EOS). It is an imaging spectrometer utilizing a grating‐type, reflecting Schmidt optical design that must provide a 1.1‐km spatial resolution at nadir from a spacecraft altitude of 705 km with a 1500‐km cross‐track swath and a ±50° fore and aft tilt capability. The instrument is required to cover the wavelength range from 400 to 880 nm in approximately 15‐nm steps with less than 2.3% instrument‐induced polarization. The absolute radiometric accuracy must be at least 5% over the full dynamic range of the instrument.