Translator Disclaimer
3 July 1998 Solar system geometry and ephemeris processing for the HST
Author Affiliations +
Hubble Space Telescope (HST) moving target observations are planned using the 'Percy' interactive computer program. Percy provides ephemeris and geometrical even information about solar system objects including the Sun, major planets and their natural satellites, comets, and asteroids. While Percy contains some HST specific feature, it should be useful for almost nay ground or spacecraft based observing system. Percy was originally developed by JPL, but the Space Telescope Science Institute took-over all Percy development in 1992. Since then, extensive modifications and many new features have been added. This paper reflects the current state of Percy.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Scott Stallcup "Solar system geometry and ephemeris processing for the HST", Proc. SPIE 3349, Observatory Operations to Optimize Scientific Return, (3 July 1998);


Design for a low cost geosynchronous 2.4 meter UV EUV...
Proceedings of SPIE (August 27 1998)
Mechanisms for space applications
Proceedings of SPIE (May 24 2012)
Quantitative solar system science with AO systems
Proceedings of SPIE (September 12 2012)

Back to Top