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Proceedings Paper

Pointing control system of SOFIA
Author(s): Karl Wandner; Hans Juergen Kaercher
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Paper Abstract

The challenging pointing stability requirement for the SOFIA telescope requires the application of sophisticated control concepts and high performance sensors and actuators. The pointing control concept involves a tracking system with optical cameras, a three-axis inertial stabilization loop, and the compensation of telescope deflections taking the secondary mirror control system into account. Special algorithms and techniques based on finite element calculations are applied for the online identification of telescope deflections and the design of the position control loop algorithm. New developments have been performed with regard to low noise fiber optic gyroscopes and spherical torquers for three degrees of freedom. The paper explains the control concept of the SOFIA telescope.

Paper Details

Date Published: 20 June 2000
PDF: 10 pages
Proc. SPIE 4014, Airborne Telescope Systems, (20 June 2000); doi: 10.1117/12.389113
Show Author Affiliations
Karl Wandner, MAN Technologie AG (Germany)
Hans Juergen Kaercher, MAN Technologie AG (Germany)

Published in SPIE Proceedings Vol. 4014:
Airborne Telescope Systems
Ramsey K. Melugin; Hans-Peter Roeser, Editor(s)

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