Landsat MSS (Multispectral Scanner) was flown on L1 to L5. The objective was to provide repetitive daytime acquisition of high-resolution, multispectral data of the Earth’s surface on a global basis and to demonstrate that remote sensing from space is a feasible and practical approach to efficient management of the Earth’s resources.
Landsat RBV (Return Beam Vidicon Camera) was flown on L1 to L3. Measurements were only conducted in daylight. RBV imaged an entire ground scene instantaneously, providing a greater cartographic fidelity than MSS.

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Operators: NOAA, NASA, USGS
Date of Launch: 23.07.1972
Orbit Height: 917 km
Orbit Type: Sun Synchronous
Repeat Cycle: 18 days (Landsat 1-3); 18 days (Landsat 4-5)
Resolution: 80 m
Swath Width: 185 km

Onboard Sensors:
+ MSS (Multispectral Scanner)
+ RBV (Return Beam Vidicon Camera) - Only onboard Landsat 1 to 3