1 June 2000 The Origins Testbed: capturing the dynamics and control of future space-based telescopes
Author Affiliations +
Abstract
We describe a laboratory test article developed to capture the dynamics and control problems anticipated for future space-based telescopes: the Space Interferometry Mission (SIM) and the Next Generation Space Telescopes (NGST). We motivate the design of the Origins Testbed (OT) by identifying three operational events common to spacebased telescopes and requiring the OT to simulate them in a laboratory: large-angle slew, optical capture (alignment), and observation. The OT is the first spacecraft-like testbed to include nanometer phasing and a large-angle slew capability in the presence of spacecraftlike disturbances. The OT is discussed in detail, including the testbed’s dynamics and control sensors and actuators, with particular emphasis on the optical system. We present the necessary optics to capture the phasing of SIM and NGST using three interferometer channels. Pointing optics are detailed, with a description of an implemented spiral-based autoalignment algorithm. Initial slew control is discussed, and experimental results are presented. Future experiments performed on the OT will provide critical heritage for control techniques to be implemented on SIM and NGST.
Gregory J. Mallory, Alvar Saenz-Otero, David W. Miller, "The Origins Testbed: capturing the dynamics and control of future space-based telescopes," Optical Engineering 39(6), (1 June 2000). https://doi.org/10.1117/1.602544
JOURNAL ARTICLE
12 PAGES


SHARE
RELATED CONTENT

Cold interferometric nulling demonstration in space (CINDIS)
Proceedings of SPIE (November 19 2003)
NASA IRTF tip-tilt secondary system
Proceedings of SPIE (September 18 1997)
8-m UV/visible/IR space telescope
Proceedings of SPIE (June 02 1995)
MAXIM Pathfinder x-ray interferometry mission
Proceedings of SPIE (March 11 2003)

Back to Top