We explore and compare the capabilities and limitations of different optical sensors (Sentinel-2/ESA. Landsat 7/8/USGS. Ven μ s/CNES-ISA. Pléiades/AirbusD&S and Planet Labs images) for mapping the surface speeds of mountain glaciers on a regional scale. https://safeersappliancers.shop/product-category/aeg-l6fbg842r-prosense-8-kg-1400rpm-washing-machine-white/