Optical Scanning Pictures of Geosynchronous Orbit - "Scanning pictures were obtained, by using an optical telescope, for the geosynchronous orbital arc visible from Kashima Space Communications Center." (April 2001 through September 2004) http://www2.nict.go.jp/ka/control/geosurvey/geoindex.html At the foot of the page, below the links to the imagery, it says: "Scanning Method "One set of scanning pictures is obtained in one night. Scanning observation is planned so that the line of sight of the telescope points to a fixed right ascension. "In order to see whether a satellite is stationary, or to see its drift motion if it was non-stationary, we need two pictures of different times. This is the reason why the scanning is repeated over two successive nights." Each image is fixed on one spot, with stars trailing. Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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