Photographs of a ground-based laser beacon were taken by astronauts on board the Skylab spacecraft. Unexpected large and elliptical laser-beam images were recorded. The photographic results are presented and discussed in terms of possible atmospheric scattering mechanisms. Current beacon experiments with the Landsat spacecraft are also discussed.
© 1979 Optical Society of America
Jack L. Bufton, Louis O. Caudill, Thomas E. McGunigal, and Kenneth R. Piech, "Skylab—Earth laser-beacon experiment: results and analysis," J. Opt. Soc. Am. 69, 1180-1183 (1979)