Gemini south adaptive optics imager (GSAOI)

Peter McGregor; John Hart; Dejan Stevanovic; Gabe Bloxham; Damien Jones; Jan Van Harmelen; Jason Griesbach; Murray Dawson; Peter Young; Mark Jarnyk

doi:10.1117/12.550288

Gemini south adaptive optics imager (GSAOI)

Peter McGregor^*, John Hart, Dejan Stevanovic, Gabe Bloxham, Damien Jones, Jan Van Harmelen, Jason Griesbach, Murray Dawson, Peter Young, Mark Jarnyk

^*Corresponding author for this work

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

78 Citations (Scopus)

Abstract

The Gemini South Adaptive Optics Imager (GSAOI) is the science camera and commissioning instrument for the Multi-Conjugate Adaptive Optics (MCAO) system on the Gemini South telescope. GSAOI is required to deliver diffraction-limited performance at near-infrared wavelengths over a 85×85″ field of view. It must be delivered on a short timescale commensurate with MCAO delivery. GSAOI will use a high throughput, all-refractive optical design and a mosaic of four HAWAH-2RG detectors to form an imager focal plane of 4080×4080 pixels with a fixed scale of 0.02″/pixel. The On-Detector Guide Window (ODGW) capability of the HAWAII-2RG detectors will be used for flexure monitoring and as near-infrared substitutes for MCAO natural guide star wave front sensors. The imager will include a pupil viewer for accurate alignment to MCAO and defocus lenses to measure wave front phase errors at the science detector using the curvature technique. Non-common path wave front errors will be nulled by setting the base shapes of the three MCAO deformable mirrors. The science drivers, performance predictions, optical design issues, and detector system for the instrument are described.

Original language	English
Pages (from-to)	1033-1044
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5492
Issue number	PART 2
DOIs	https://doi.org/10.1117/12.550288
Publication status	Published - 2004
Event	Ground-based Instrumentation for Astronomy - Glasgow, United Kingdom Duration: 21 Jun 2004 → 25 Jun 2004

Access to Document

10.1117/12.550288

Cite this

@article{a91940a1c1644306bbda86bba7897561,

title = "Gemini south adaptive optics imager (GSAOI)",

abstract = "The Gemini South Adaptive Optics Imager (GSAOI) is the science camera and commissioning instrument for the Multi-Conjugate Adaptive Optics (MCAO) system on the Gemini South telescope. GSAOI is required to deliver diffraction-limited performance at near-infrared wavelengths over a 85×85″ field of view. It must be delivered on a short timescale commensurate with MCAO delivery. GSAOI will use a high throughput, all-refractive optical design and a mosaic of four HAWAH-2RG detectors to form an imager focal plane of 4080×4080 pixels with a fixed scale of 0.02″/pixel. The On-Detector Guide Window (ODGW) capability of the HAWAII-2RG detectors will be used for flexure monitoring and as near-infrared substitutes for MCAO natural guide star wave front sensors. The imager will include a pupil viewer for accurate alignment to MCAO and defocus lenses to measure wave front phase errors at the science detector using the curvature technique. Non-common path wave front errors will be nulled by setting the base shapes of the three MCAO deformable mirrors. The science drivers, performance predictions, optical design issues, and detector system for the instrument are described.",

keywords = "Detector system, Gemini, Imager, Instrumentation, Near-infrared, Optical design",

author = "Peter McGregor and John Hart and Dejan Stevanovic and Gabe Bloxham and Damien Jones and {Van Harmelen}, Jan and Jason Griesbach and Murray Dawson and Peter Young and Mark Jarnyk",

year = "2004",

doi = "10.1117/12.550288",

language = "English",

volume = "5492",

pages = "1033--1044",

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

issn = "0277-786X",

publisher = "SPIE",

number = "PART 2",

note = "Ground-based Instrumentation for Astronomy ; Conference date: 21-06-2004 Through 25-06-2004",

}

TY - JOUR

T1 - Gemini south adaptive optics imager (GSAOI)

AU - McGregor, Peter

AU - Hart, John

AU - Stevanovic, Dejan

AU - Bloxham, Gabe

AU - Jones, Damien

AU - Van Harmelen, Jan

AU - Griesbach, Jason

AU - Dawson, Murray

AU - Young, Peter

AU - Jarnyk, Mark

PY - 2004

Y1 - 2004

N2 - The Gemini South Adaptive Optics Imager (GSAOI) is the science camera and commissioning instrument for the Multi-Conjugate Adaptive Optics (MCAO) system on the Gemini South telescope. GSAOI is required to deliver diffraction-limited performance at near-infrared wavelengths over a 85×85″ field of view. It must be delivered on a short timescale commensurate with MCAO delivery. GSAOI will use a high throughput, all-refractive optical design and a mosaic of four HAWAH-2RG detectors to form an imager focal plane of 4080×4080 pixels with a fixed scale of 0.02″/pixel. The On-Detector Guide Window (ODGW) capability of the HAWAII-2RG detectors will be used for flexure monitoring and as near-infrared substitutes for MCAO natural guide star wave front sensors. The imager will include a pupil viewer for accurate alignment to MCAO and defocus lenses to measure wave front phase errors at the science detector using the curvature technique. Non-common path wave front errors will be nulled by setting the base shapes of the three MCAO deformable mirrors. The science drivers, performance predictions, optical design issues, and detector system for the instrument are described.

AB - The Gemini South Adaptive Optics Imager (GSAOI) is the science camera and commissioning instrument for the Multi-Conjugate Adaptive Optics (MCAO) system on the Gemini South telescope. GSAOI is required to deliver diffraction-limited performance at near-infrared wavelengths over a 85×85″ field of view. It must be delivered on a short timescale commensurate with MCAO delivery. GSAOI will use a high throughput, all-refractive optical design and a mosaic of four HAWAH-2RG detectors to form an imager focal plane of 4080×4080 pixels with a fixed scale of 0.02″/pixel. The On-Detector Guide Window (ODGW) capability of the HAWAII-2RG detectors will be used for flexure monitoring and as near-infrared substitutes for MCAO natural guide star wave front sensors. The imager will include a pupil viewer for accurate alignment to MCAO and defocus lenses to measure wave front phase errors at the science detector using the curvature technique. Non-common path wave front errors will be nulled by setting the base shapes of the three MCAO deformable mirrors. The science drivers, performance predictions, optical design issues, and detector system for the instrument are described.

KW - Detector system

KW - Gemini

KW - Imager

KW - Instrumentation

KW - Near-infrared

KW - Optical design

UR - http://www.scopus.com/inward/record.url?scp=10444238048&partnerID=8YFLogxK

U2 - 10.1117/12.550288

DO - 10.1117/12.550288

M3 - Conference article

AN - SCOPUS:10444238048

SN - 0277-786X

VL - 5492

SP - 1033

EP - 1044

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

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

IS - PART 2

T2 - Ground-based Instrumentation for Astronomy

Y2 - 21 June 2004 through 25 June 2004

ER -

Gemini south adaptive optics imager (GSAOI)

Abstract

Access to Document

Other files and links

Fingerprint

Cite this