Translator Disclaimer
Paper
1 November 1993 Space-based CCD experiment for high-precision astrometry
Author Affiliations +
Abstract
The Astrometric Imaging Telescope, an orbiting 1.5 m low-distortion Ritchey-Chretien, will use a large format CCD to record star trails as the CCD is dragged across the image plane. Star-trail separations, when averaged over thousands of pixels, yield photon-noise limited centroids with 10 micro-arcsecond accuracy. In this paper, we will discuss the important CCD and optical design parameters that affect astrometric accuracy. For the CCD, these include charge transfer efficiency, pixel-to-pixel relative quantum efficiency, sub-pixel QE gradients, and systematic pixel dislocations. For optical design, they are tolerancing to parameters such as secondary mirror decenter and tilt, and conic constants. We present a point design for a system that can achieve 10 micro-arcsecond accuracy over a long-term mission. End-to-end modeling, including high precision diffraction calculations, is used to validate the design.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stuart B. Shaklan and Steven H. Pravdo "Space-based CCD experiment for high-precision astrometry", Proc. SPIE 1945, Space Astronomical Telescopes and Instruments II, (1 November 1993); https://doi.org/10.1117/12.158799
PROCEEDINGS
7 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Design Of Wide-Band Catadioptic Telescope
Proceedings of SPIE (June 13 1989)
Design and performance predictions for the GOES SXI telescope
Proceedings of SPIE (November 02 1998)
Error analysis on the NWO starshade
Proceedings of SPIE (August 10 2010)
Optical design of PANORAMIX II, the OMM wide field VIS...
Proceedings of SPIE (September 30 2004)
Optical design of Gemini Altair
Proceedings of SPIE (September 11 1998)

Back to Top