Anisoplanatism within the isoplanatic patch

J. C. Christou; E. Steinbring; S. M. Faber; D. Gavel; Jennifer Patience; E. Gates

doi:10.1117/12.467863

Anisoplanatism within the isoplanatic patch

J. C. Christou, E. Steinbring, S. M. Faber, D. Gavel, Jennifer Patience, E. Gates

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

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)
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	https://doi.org/10.1117/12.467863
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
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

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10.1117/12.467863

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Christou, JC, Steinbring, E, Faber, SM, Gavel, D, Patience, J & Gates, E 2002, Anisoplanatism within the isoplanatic patch. in PL Wizinowich & D Bonaccini (eds), Proceedings of SPIE - The International Society for Optical Engineering. 2 edn, vol. 4839, pp. 846-857, Adaptive Optical System Technologies II, Waikoloa, HI, United States, 8/22/02. https://doi.org/10.1117/12.467863

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title = "Anisoplanatism within the isoplanatic patch",

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.",

keywords = "Adaptive optics, Anisoplanatism, Astronomy, Strehl ratio, Tip-tilt motion",

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year = "2002",

doi = "10.1117/12.467863",

language = "English (US)",

volume = "4839",

pages = "846--857",

editor = "P.L. Wizinowich and D. Bonaccini",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

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T1 - Anisoplanatism within the isoplanatic patch

AU - Christou, J. C.

AU - Steinbring, E.

AU - Faber, S. M.

AU - Gavel, D.

AU - Patience, Jennifer

AU - Gates, E.

PY - 2002

Y1 - 2002

N2 - 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.

AB - 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.

KW - Adaptive optics

KW - Anisoplanatism

KW - Astronomy

KW - Strehl ratio

KW - Tip-tilt motion

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