Published July 7, 2008
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Precision astrometry with adaptive optics
Chicago
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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.
Additional Information
© 2008 Society of Photo-Optical Instrumentation Engineers. We thank Nicholas Law, Michael Ireland, David Le Mignant, Adam Kraus, Marten van Kerkwijk, Andrew Gould, Andrea Ghez and Jessica Lu for useful discussions on astrometry. This work has been supported by NASA, and by the National Science Foundation Science and Technology Center for Adaptive Optics, managed by the University of California at Santa Cruz under cooperative agreement No. AST-9876783.Attached Files
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Additional details
- Eprint ID
- 91859
- Resolver ID
- CaltechAUTHORS:20181217-103024399
- NASA
- NSF
- AST-9876783
- Created
-
2018-12-18Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences (GPS)
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 7015