Design of the first generation wave front sensor and actuator geometry for the 6.5 m MMT adaptive-optical system

Troy A. Rhoadarmer; Patrick C. McGuire; Michael Lloyd-Hart; James Roger P. Angel; Brian Cuerden; Bruce C. Fitz-Patrick; David G. Sandler

doi:10.1117/12.321715

Design of the first generation wave front sensor and actuator geometry for the 6.5 m MMT adaptive-optical system

Troy A. Rhoadarmer, Patrick C. McGuire, Michael Lloyd-Hart, James Roger P. Angel, Brian Cuerden, Bruce C. Fitz-Patrick, David G. Sandler

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

Abstract

A description is given for the geometry of the first generation adaptive-optical (AO) system being developed for the 6.5m single-mirror telescope that will replace the Multiple Mirror Telescope on Mt. Hopkins. The AO system consists of an adaptive secondary mirror with 330-actuators and a wave front senor composed of a 13 by 13 square subaperture array. The deformable mirror actuator vibrational modes were determined from a finite element model of the adaptive-secondary mirror. Numerical simulations in based on the finite element results were carried out to determine the expected performance of the system. Two reconstruction algorithms were compared - a least squares reconstructor and a modal equalization technique developed for this AO geometry. Strehl ratios are reported for the two algorithms for various guide star magnitudes and number of corrected wave front modes.

Original language	English (US)
Pages (from-to)	579-590
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3353
DOIs	https://doi.org/10.1117/12.321715
State	Published - 1998
Event	Adaptive Optical System Technologies - Kona, HI, United States Duration: Mar 23 1998 → Mar 23 1998

Keywords

Adaptive optics
Adaptive secondary
Deformable mirrors
Influence functions
Wave front sensors

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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10.1117/12.321715

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title = "Design of the first generation wave front sensor and actuator geometry for the 6.5 m MMT adaptive-optical system",

abstract = "A description is given for the geometry of the first generation adaptive-optical (AO) system being developed for the 6.5m single-mirror telescope that will replace the Multiple Mirror Telescope on Mt. Hopkins. The AO system consists of an adaptive secondary mirror with 330-actuators and a wave front senor composed of a 13 by 13 square subaperture array. The deformable mirror actuator vibrational modes were determined from a finite element model of the adaptive-secondary mirror. Numerical simulations in based on the finite element results were carried out to determine the expected performance of the system. Two reconstruction algorithms were compared - a least squares reconstructor and a modal equalization technique developed for this AO geometry. Strehl ratios are reported for the two algorithms for various guide star magnitudes and number of corrected wave front modes.",

keywords = "Adaptive optics, Adaptive secondary, Deformable mirrors, Influence functions, Wave front sensors",

author = "Rhoadarmer, {Troy A.} and McGuire, {Patrick C.} and Michael Lloyd-Hart and Angel, {James Roger P.} and Brian Cuerden and Fitz-Patrick, {Bruce C.} and Sandler, {David G.}",

year = "1998",

doi = "10.1117/12.321715",

language = "English (US)",

volume = "3353",

pages = "579--590",

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

issn = "0277-786X",

publisher = "SPIE",

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

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TY - JOUR

T1 - Design of the first generation wave front sensor and actuator geometry for the 6.5 m MMT adaptive-optical system

AU - Rhoadarmer, Troy A.

AU - McGuire, Patrick C.

AU - Lloyd-Hart, Michael

AU - Angel, James Roger P.

AU - Cuerden, Brian

AU - Fitz-Patrick, Bruce C.

AU - Sandler, David G.

PY - 1998

Y1 - 1998

N2 - A description is given for the geometry of the first generation adaptive-optical (AO) system being developed for the 6.5m single-mirror telescope that will replace the Multiple Mirror Telescope on Mt. Hopkins. The AO system consists of an adaptive secondary mirror with 330-actuators and a wave front senor composed of a 13 by 13 square subaperture array. The deformable mirror actuator vibrational modes were determined from a finite element model of the adaptive-secondary mirror. Numerical simulations in based on the finite element results were carried out to determine the expected performance of the system. Two reconstruction algorithms were compared - a least squares reconstructor and a modal equalization technique developed for this AO geometry. Strehl ratios are reported for the two algorithms for various guide star magnitudes and number of corrected wave front modes.

AB - A description is given for the geometry of the first generation adaptive-optical (AO) system being developed for the 6.5m single-mirror telescope that will replace the Multiple Mirror Telescope on Mt. Hopkins. The AO system consists of an adaptive secondary mirror with 330-actuators and a wave front senor composed of a 13 by 13 square subaperture array. The deformable mirror actuator vibrational modes were determined from a finite element model of the adaptive-secondary mirror. Numerical simulations in based on the finite element results were carried out to determine the expected performance of the system. Two reconstruction algorithms were compared - a least squares reconstructor and a modal equalization technique developed for this AO geometry. Strehl ratios are reported for the two algorithms for various guide star magnitudes and number of corrected wave front modes.

KW - Adaptive optics

KW - Adaptive secondary

KW - Deformable mirrors

KW - Influence functions

KW - Wave front sensors

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U2 - 10.1117/12.321715

DO - 10.1117/12.321715

M3 - Conference article

AN - SCOPUS:62249104387

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VL - 3353

SP - 579

EP - 590

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Adaptive Optical System Technologies

Y2 - 23 March 1998 through 23 March 1998

ER -

Design of the first generation wave front sensor and actuator geometry for the 6.5 m MMT adaptive-optical system

Abstract

Keywords

ASJC Scopus subject areas

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