First light for Hokupa'a: 36 Element curvature AO system at UH

J. Elon Graves; Malcolm J. Northcott; Francois J. Roddier; Claude A. Roddier; Laird M. Close

doi:10.1117/12.321698

First light for Hokupa'a: 36 Element curvature AO system at UH

J. Elon Graves, Malcolm J. Northcott, Francois J. Roddier, Claude A. Roddier, Laird M. Close

Research output: Contribution to journal › Conference article › peer-review

54 Scopus citations

Abstract

The University of Hawaii adaptive optics program has scaled its previously successful 13 elements AO system to 36 actuators and named it "Hokupa'a", meaning "immovable star" in Hawaiian. First light for Hokupa'a in early November of 1997, was on the Canada France Hawaii Telescope on Mauna Kea, an f/35, 3.35 meter telescope. Performance at the telescope has now been measured and compares favorably with that predicted theoretically. The extension to 36 elements has now allowed the system to give diffraction limited performance down to I band on stars as faint as 12.5 magnitude in median 0.7 arcsecond seeing on Mauna Kea. Like our previous system, extensive computer simulations were carried out to achieve the best possible match between the curvature WFS and the deformable curvature mirror.

Original language	English (US)
Pages (from-to)	34-43
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3353
DOIs	https://doi.org/10.1117/12.321698
State	Published - 1998
Externally published	Yes
Event	Adaptive Optical System Technologies - Kona, HI, United States Duration: Mar 23 1998 → Mar 23 1998

Keywords

AO optical system design
AO telescope performance
Adaptive optics
Curvature deformable mirrors
Curvature wavefront sensing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.321698

Cite this

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title = "First light for Hokupa'a: 36 Element curvature AO system at UH",

abstract = "The University of Hawaii adaptive optics program has scaled its previously successful 13 elements AO system to 36 actuators and named it {"}Hokupa'a{"}, meaning {"}immovable star{"} in Hawaiian. First light for Hokupa'a in early November of 1997, was on the Canada France Hawaii Telescope on Mauna Kea, an f/35, 3.35 meter telescope. Performance at the telescope has now been measured and compares favorably with that predicted theoretically. The extension to 36 elements has now allowed the system to give diffraction limited performance down to I band on stars as faint as 12.5 magnitude in median 0.7 arcsecond seeing on Mauna Kea. Like our previous system, extensive computer simulations were carried out to achieve the best possible match between the curvature WFS and the deformable curvature mirror.",

keywords = "AO optical system design, AO telescope performance, Adaptive optics, Curvature deformable mirrors, Curvature wavefront sensing",

author = "Graves, {J. Elon} and Northcott, {Malcolm J.} and Roddier, {Francois J.} and Roddier, {Claude A.} and Close, {Laird M.}",

year = "1998",

doi = "10.1117/12.321698",

language = "English (US)",

volume = "3353",

pages = "34--43",

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note = "Adaptive Optical System Technologies ; Conference date: 23-03-1998 Through 23-03-1998",

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T1 - First light for Hokupa'a

T2 - Adaptive Optical System Technologies

AU - Graves, J. Elon

AU - Northcott, Malcolm J.

AU - Roddier, Francois J.

AU - Roddier, Claude A.

AU - Close, Laird M.

PY - 1998

Y1 - 1998

N2 - The University of Hawaii adaptive optics program has scaled its previously successful 13 elements AO system to 36 actuators and named it "Hokupa'a", meaning "immovable star" in Hawaiian. First light for Hokupa'a in early November of 1997, was on the Canada France Hawaii Telescope on Mauna Kea, an f/35, 3.35 meter telescope. Performance at the telescope has now been measured and compares favorably with that predicted theoretically. The extension to 36 elements has now allowed the system to give diffraction limited performance down to I band on stars as faint as 12.5 magnitude in median 0.7 arcsecond seeing on Mauna Kea. Like our previous system, extensive computer simulations were carried out to achieve the best possible match between the curvature WFS and the deformable curvature mirror.

AB - The University of Hawaii adaptive optics program has scaled its previously successful 13 elements AO system to 36 actuators and named it "Hokupa'a", meaning "immovable star" in Hawaiian. First light for Hokupa'a in early November of 1997, was on the Canada France Hawaii Telescope on Mauna Kea, an f/35, 3.35 meter telescope. Performance at the telescope has now been measured and compares favorably with that predicted theoretically. The extension to 36 elements has now allowed the system to give diffraction limited performance down to I band on stars as faint as 12.5 magnitude in median 0.7 arcsecond seeing on Mauna Kea. Like our previous system, extensive computer simulations were carried out to achieve the best possible match between the curvature WFS and the deformable curvature mirror.

KW - AO optical system design

KW - AO telescope performance

KW - Adaptive optics

KW - Curvature deformable mirrors

KW - Curvature wavefront sensing

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Y2 - 23 March 1998 through 23 March 1998

ER -

First light for Hokupa'a: 36 Element curvature AO system at UH

Abstract

Keywords

ASJC Scopus subject areas

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