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**Landsat MSS scanning specifics.** - Scan direction: **across-track**; platform moves along-track. - **Six image lines per mirror sweep** → needs **6 detectors per band**, with 4 bands = **24 detectors total**. - **Scene size:** 185 km × 170 km. - **Spatial resolution:** ~79 m × 57 m (pixel is rectangular because of detector geometry and scan speed).
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