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Proceedings Paper

Tracking subsystem of the SOFIA telescope
Author(s): Hermann Bittner; Christoph Braeuninger; Andreas Dierks; Matthias Erdmann; Markus Erhard; Klaus Lattner; Juergen Schmolke
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Paper Abstract

The Tracking Subsystem of the SOFIA telescope consists of three high performance imagers and a dedicated tracking control unit. There are two boresighted imagers for target acquisition and tracking, one with a wide (6 degrees) and one with a fine (70 arcmin) field-of-view, and one main- telescope-optics sharing imager with a narrow field-of-view (8 arcmin) for high performance tracking. From the recorded stellar images, tracking error signals are generated by the tracker controller. The tracker controller has several features to support various tracking schemes such as tracking the telescope as an inertial platform, on- axis/offset tracking, and limb tracking. The tracker has three modes, i.e. positioning, tracking and `override'. Special features are the handling of so-called areas-of- interest in the inertial reference frame and the external imager synchronization. The paper presents the design and functional/operational performance of the imagers and the tracking control unit.

Paper Details

Date Published: 20 June 2000
PDF: 10 pages
Proc. SPIE 4014, Airborne Telescope Systems, (20 June 2000); doi: 10.1117/12.389114
Show Author Affiliations
Hermann Bittner, Kayser-Threde GmbH (Germany)
Christoph Braeuninger, Kayser-Threde GmbH (Germany)
Andreas Dierks, Kayser-Threde GmbH (Germany)
Matthias Erdmann, Kayser-Threde GmbH (Germany)
Markus Erhard, Kayser-Threde GmbH (Germany)
Klaus Lattner, Kayser-Threde GmbH (Germany)
Juergen Schmolke, Kayser-Threde GmbH (Germany)

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

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