The "Thematic Mapper" (TM) instrument on-board the LANDSAT-4 and LANDSAT-5 satellites is a high resolution imaging spectrometer operating in the visible/near-infrared (VNIR), short-wave infrared (SWIR), and thermal infrared spectrum. Data are acquired through six multi-spectral bands in the VNIR/SWIR (TM1, TM2, TM3, TM4, TM5, TM7) with a 30 metres spatial resolution and one thermal band (TM6) at 120 metres spatial resolution.