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Proceedings Paper

Overview of SIM wide-angle astrometric calibration strategies
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Paper Abstract

This paper summarizes two different strategies envisioned for calibrating the systematic field dependent biases present in the Space Interferometry Mission (SIM) instrument. The Internal Calibration strategy is based on pre-launch measurements combined with a set of on-orbit measurements generated by a source internal to the instrument. The External Calibration strategy uses stars as an external source for generating the calibration function. Both approaches demand a significant amount of innovation given that SIM's calibration strategy requires a post-calibration error of 100 picometers over a 15 degree field of regard while the uncalibrated instrument introduces tens to hundreds of nanometers of error. The calibration strategies are discussed in the context of the wide angle astrometric mode of the instrument, although variations on both strategies have been proposed for doing narrow angle astrometry.

Paper Details

Date Published: 26 February 2003
PDF: 13 pages
Proc. SPIE 4852, Interferometry in Space, (26 February 2003); doi: 10.1117/12.460937
Show Author Affiliations
Lisa A. Sievers, Jet Propulsion Lab. (United States)
Robert P. Korechoff, Jet Propulsion Lab. (United States)
Mark H. Milman, Jet Propulsion Lab. (United States)
Stuart B. Shaklan, Jet Propulsion Lab. (United States)
Joseph Catanzarite, Jet Propulsion Lab. (United States)
Ipek Basdogan, Jet Propulsion Lab. (United States)
Miltiadis V. Papalexandris, Jet Propulsion Lab. (United States)
Raymond Swartz, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4852:
Interferometry in Space
Michael Shao, Editor(s)

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