Abstract
Measurements of anisoplanatism from data obtained with natural guide star adaptive optics on the Lick Observatory 3m are presented. These were obtained from short exposures of binary stars with the IRCAL camera whose field of view (∼ 20″) is generally considered isoplanatic in the K-band. However, measurable amounts of high-order anisoplanatism were present at separations of ∼ 7″ and ∼ 12″ with an isoplanatic patch size estimated to be ∼ 26″. Within this field, there was measurerable differential image motion between the binary star components. This image motion was small compared to the size of the diffraction-spot and therefore had negligible effect.
Original language | English (US) |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Editors | P.L. Wizinowich, D. Bonaccini |
Pages | 846-857 |
Number of pages | 12 |
Volume | 4839 |
Edition | 2 |
DOIs | |
State | Published - 2002 |
Externally published | Yes |
Event | Adaptive Optical System Technologies II - Waikoloa, HI, United States Duration: Aug 22 2002 → Aug 26 2002 |
Other
Other | Adaptive Optical System Technologies II |
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Country | United States |
City | Waikoloa, HI |
Period | 8/22/02 → 8/26/02 |
Keywords
- Adaptive optics
- Anisoplanatism
- Astronomy
- Strehl ratio
- Tip-tilt motion
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics