Likely answer edit

Thematic Mapper (TM) vs. MSS — major changes (Landsat 4/5 onward):

  • More spectral bands (7 vs. 4).
  • Better spatial & spectral resolution.
  • Lower orbit — 919 km → 705 km (improves ground resolution).
  • Wider viewing angle — 11.56° → 14.92°.
  • Faster repeat — 18 → 16 days.
  • 16 detectors per band for B1–B5, B7; 4 detectors for the thermal (B6).
TM band Name Wavelength Resolution
TM1 Blue 0.45 – 0.52 µm 30 m
TM2 Green 0.52 – 0.60 µm 30 m
TM3 Red 0.63 – 0.69 µm 30 m
TM4 NIR 0.76 – 0.90 µm 30 m
TM5 SWIR-1 1.55 – 1.75 µm 30 m
TM7 SWIR-2 2.08 – 2.35 µm 30 m
TM6 Thermal 10.4 – 12.5 µm 120 m