Laboratory demonstration of a liquid atmospheric dispersion corrector

J. Zheng; W. Saunders; J. S. Lawrence; F. Bastien; F. Cantalloube

doi:10.1117/12.925248

Laboratory demonstration of a liquid atmospheric dispersion corrector

J. Zheng^*, W. Saunders, J. S. Lawrence, F. Bastien, F. Cantalloube

^*Corresponding author for this work

MQ Photonics Research Centre

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

3 Citations (Scopus)

Abstract

A liquid atmospheric dispersion corrector (LADC) is investigated to compensate atmospheric dispersion for modern extremely large telescopes (ELTs). The LADC uses a pair of immiscible liquids in a small glass container which can be placed very close to the telescope focal plane. A pair of liquid prisms is formed and the apex of the two prisms varies with telescope zenith because of gravity. The idea is that a large number of independent deployable units (e.g., AAO's 'Starbugs') would each carry its own LADC. Three pairs of liquids were identified that were found suitable for use in an LADC after thousands of chemicals were investigated. We have theoretically and experimentally verified that LADC can correct atmospheric dispersion adaptively. It is demonstrated that a LADC can correct a simulated atmospheric dispersion of 0.34° at a Zenith of 48°, over a wavelength range of 370nm to 655nm. The experimental results show very good agreement with the optical (Zemax) model.

Original language	English
Title of host publication	Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II
Editors	Ramón Navarro, Colin R. Cunningham, Eric Prieto
Place of Publication	Bellingham, WA
Publisher	SPIE
Pages	84500F-1-84500F-9
Number of pages	9
Volume	8450
ISBN (Print)	9780819491510
DOIs	https://doi.org/10.1117/12.925248
Publication status	Published - 2012
Event	Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II - Amsterdam, Netherlands Duration: 1 Jul 2012 → 6 Jul 2012

Other

Other	Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II
Country/Territory	Netherlands
City	Amsterdam
Period	1/07/12 → 6/07/12

Keywords

Astronomical optics
Atmospheric dispersion compensation
Liquid optics

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10.1117/12.925248

Cite this

Zheng, J., Saunders, W., Lawrence, J. S., Bastien, F., & Cantalloube, F. (2012). Laboratory demonstration of a liquid atmospheric dispersion corrector. In R. Navarro, C. R. Cunningham, & E. Prieto (Eds.), Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II (Vol. 8450, pp. 84500F-1-84500F-9). Article 84500F SPIE. https://doi.org/10.1117/12.925248

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title = "Laboratory demonstration of a liquid atmospheric dispersion corrector",

abstract = "A liquid atmospheric dispersion corrector (LADC) is investigated to compensate atmospheric dispersion for modern extremely large telescopes (ELTs). The LADC uses a pair of immiscible liquids in a small glass container which can be placed very close to the telescope focal plane. A pair of liquid prisms is formed and the apex of the two prisms varies with telescope zenith because of gravity. The idea is that a large number of independent deployable units (e.g., AAO's 'Starbugs') would each carry its own LADC. Three pairs of liquids were identified that were found suitable for use in an LADC after thousands of chemicals were investigated. We have theoretically and experimentally verified that LADC can correct atmospheric dispersion adaptively. It is demonstrated that a LADC can correct a simulated atmospheric dispersion of 0.34° at a Zenith of 48°, over a wavelength range of 370nm to 655nm. The experimental results show very good agreement with the optical (Zemax) model.",

keywords = "Astronomical optics, Atmospheric dispersion compensation, Liquid optics",

author = "J. Zheng and W. Saunders and Lawrence, {J. S.} and F. Bastien and F. Cantalloube",

year = "2012",

doi = "10.1117/12.925248",

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booktitle = "Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II",

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note = "Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II ; Conference date: 01-07-2012 Through 06-07-2012",

}

Zheng, J, Saunders, W, Lawrence, JS, Bastien, F & Cantalloube, F 2012, Laboratory demonstration of a liquid atmospheric dispersion corrector. in R Navarro, CR Cunningham & E Prieto (eds), Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II. vol. 8450, 84500F, SPIE, Bellingham, WA, pp. 84500F-1-84500F-9, Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II, Amsterdam, Netherlands, 1/07/12. https://doi.org/10.1117/12.925248

Laboratory demonstration of a liquid atmospheric dispersion corrector. / Zheng, J.; Saunders, W.; Lawrence, J. S. et al.
Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II. ed. / Ramón Navarro; Colin R. Cunningham; Eric Prieto. Vol. 8450 Bellingham, WA: SPIE, 2012. p. 84500F-1-84500F-9 84500F.

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

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AU - Saunders, W.

AU - Lawrence, J. S.

AU - Bastien, F.

AU - Cantalloube, F.

PY - 2012

Y1 - 2012

N2 - A liquid atmospheric dispersion corrector (LADC) is investigated to compensate atmospheric dispersion for modern extremely large telescopes (ELTs). The LADC uses a pair of immiscible liquids in a small glass container which can be placed very close to the telescope focal plane. A pair of liquid prisms is formed and the apex of the two prisms varies with telescope zenith because of gravity. The idea is that a large number of independent deployable units (e.g., AAO's 'Starbugs') would each carry its own LADC. Three pairs of liquids were identified that were found suitable for use in an LADC after thousands of chemicals were investigated. We have theoretically and experimentally verified that LADC can correct atmospheric dispersion adaptively. It is demonstrated that a LADC can correct a simulated atmospheric dispersion of 0.34° at a Zenith of 48°, over a wavelength range of 370nm to 655nm. The experimental results show very good agreement with the optical (Zemax) model.

AB - A liquid atmospheric dispersion corrector (LADC) is investigated to compensate atmospheric dispersion for modern extremely large telescopes (ELTs). The LADC uses a pair of immiscible liquids in a small glass container which can be placed very close to the telescope focal plane. A pair of liquid prisms is formed and the apex of the two prisms varies with telescope zenith because of gravity. The idea is that a large number of independent deployable units (e.g., AAO's 'Starbugs') would each carry its own LADC. Three pairs of liquids were identified that were found suitable for use in an LADC after thousands of chemicals were investigated. We have theoretically and experimentally verified that LADC can correct atmospheric dispersion adaptively. It is demonstrated that a LADC can correct a simulated atmospheric dispersion of 0.34° at a Zenith of 48°, over a wavelength range of 370nm to 655nm. The experimental results show very good agreement with the optical (Zemax) model.

KW - Astronomical optics

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AN - SCOPUS:84872238830

SN - 9780819491510

VL - 8450

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T2 - Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II

Y2 - 1 July 2012 through 6 July 2012

ER -

Laboratory demonstration of a liquid atmospheric dispersion corrector

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