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Proceedings Paper

Precision astrometry with adaptive optics
Author(s): P. B. Cameron; M. C. Britton; S. R. Kulkarni
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Paper Abstract

We discuss the limits of ground-based astrometry with adaptive optics based on experiments using the core of the Galactic globular cluster M5. We have recently achieved ⪅ 100microarcsecond astrometric precision and accuracy at the Hale 200-inch telescope. Here we apply the same experimental design considerations and optimal estimation technique to explore the astrometric precision of the Keck II telescope. We find that high-precision astrometry at ≈ 50 microarcsecond level is possible at Keck in 20 seconds. We discuss the potential of differential astrometry for current and next generation large aperture telescopes based on these results.

Paper Details

Date Published: 7 July 2008
PDF: 9 pages
Proc. SPIE 7015, Adaptive Optics Systems, 70150A (7 July 2008); doi: 10.1117/12.789811
Show Author Affiliations
P. B. Cameron, California Institute of Technology (United States)
M. C. Britton, California Institute of Technology (United States)
S. R. Kulkarni, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)

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