Stressed-lap polishing of 3.5-m f/1.5 and 1.8-m f/1.0 mirrors

D. S. Anderson; J. R.P. Angel; J. H. Burge; W. B. Davison; S. T. Derigne; B. B. Hille; D. A. Ketelsen; W. C. Kittrell; H. M. Martin; R. H. Nagel; T. J. Trebisky; S. C. West; R. S. Young

doi:10.1117/12.134869.full

Stressed-lap polishing of 3.5-m f/1.5 and 1.8-m f/1.0 mirrors

D. S. Anderson
, J. R.P. Angel
, J. H. Burge
, W. B. Davison
, S. T. Derigne
, B. B. Hille
, D. A. Ketelsen
, W. C. Kittrell
, H. M. Martin
, R. H. Nagel
, T. J. Trebisky
, S. C. West
, R. S. Young

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

27 Scopus citations

Abstract

The stressed-lap polishing technique has been developed to meet the challenge of polishing 8-m-class mirrors with highly aspheric figures to an accuracy consistent with the best ground-based telescope sites. The method is currently being demonstrated in the polishing of two primary mirrors, a 1.8-m f/1.0 ellipsoid and a 3.5-m f/1.5 paraboloid. The figure accuracies achieved at the time of writing are 43 nm rms surface error for the 1.8-m mirror, and 190 nm rms surface error for the 3.5-m mirror. Polishing is proceeding on both mirrors. In this paper we describe the process used for the 3.5-m mirror and the progress through the early stages of fabrication. We also summarize progress on the 1.8-m mirror.

Original language	English (US)
Pages (from-to)	260-269
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	1531
DOIs	https://doi.org/10.1117/12.134869.full
State	Published - Jan 1 1992
Event	Advanced Optical Manufacturing and Testing II 1991 - San Diego, United States Duration: Jul 21 1991 → …

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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Anderson, D. S., Angel, J. R. P., Burge, J. H., Davison, W. B., Derigne, S. T., Hille, B. B., Ketelsen, D. A., Kittrell, W. C., Martin, H. M., Nagel, R. H., Trebisky, T. J., West, S. C., & Young, R. S. (1992). Stressed-lap polishing of 3.5-m f/1.5 and 1.8-m f/1.0 mirrors. Proceedings of SPIE - The International Society for Optical Engineering, 1531, 260-269. https://doi.org/10.1117/12.134869.full

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title = "Stressed-lap polishing of 3.5-m f/1.5 and 1.8-m f/1.0 mirrors",

abstract = "The stressed-lap polishing technique has been developed to meet the challenge of polishing 8-m-class mirrors with highly aspheric figures to an accuracy consistent with the best ground-based telescope sites. The method is currently being demonstrated in the polishing of two primary mirrors, a 1.8-m f/1.0 ellipsoid and a 3.5-m f/1.5 paraboloid. The figure accuracies achieved at the time of writing are 43 nm rms surface error for the 1.8-m mirror, and 190 nm rms surface error for the 3.5-m mirror. Polishing is proceeding on both mirrors. In this paper we describe the process used for the 3.5-m mirror and the progress through the early stages of fabrication. We also summarize progress on the 1.8-m mirror.",

author = "Anderson, \{D. S.\} and Angel, \{J. R.P.\} and Burge, \{J. H.\} and Davison, \{W. B.\} and Derigne, \{S. T.\} and Hille, \{B. B.\} and Ketelsen, \{D. A.\} and Kittrell, \{W. C.\} and Martin, \{H. M.\} and Nagel, \{R. H.\} and Trebisky, \{T. J.\} and West, \{S. C.\} and Young, \{R. S.\}",

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doi = "10.1117/12.134869.full",

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AU - Anderson, D. S.

AU - Angel, J. R.P.

AU - Burge, J. H.

AU - Davison, W. B.

AU - Derigne, S. T.

AU - Hille, B. B.

AU - Ketelsen, D. A.

AU - Kittrell, W. C.

AU - Martin, H. M.

AU - Nagel, R. H.

AU - Trebisky, T. J.

AU - West, S. C.

AU - Young, R. S.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - The stressed-lap polishing technique has been developed to meet the challenge of polishing 8-m-class mirrors with highly aspheric figures to an accuracy consistent with the best ground-based telescope sites. The method is currently being demonstrated in the polishing of two primary mirrors, a 1.8-m f/1.0 ellipsoid and a 3.5-m f/1.5 paraboloid. The figure accuracies achieved at the time of writing are 43 nm rms surface error for the 1.8-m mirror, and 190 nm rms surface error for the 3.5-m mirror. Polishing is proceeding on both mirrors. In this paper we describe the process used for the 3.5-m mirror and the progress through the early stages of fabrication. We also summarize progress on the 1.8-m mirror.

AB - The stressed-lap polishing technique has been developed to meet the challenge of polishing 8-m-class mirrors with highly aspheric figures to an accuracy consistent with the best ground-based telescope sites. The method is currently being demonstrated in the polishing of two primary mirrors, a 1.8-m f/1.0 ellipsoid and a 3.5-m f/1.5 paraboloid. The figure accuracies achieved at the time of writing are 43 nm rms surface error for the 1.8-m mirror, and 190 nm rms surface error for the 3.5-m mirror. Polishing is proceeding on both mirrors. In this paper we describe the process used for the 3.5-m mirror and the progress through the early stages of fabrication. We also summarize progress on the 1.8-m mirror.

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M3 - Conference article

AN - SCOPUS:85075521465

SN - 0277-786X

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

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

T2 - Advanced Optical Manufacturing and Testing II 1991

Y2 - 21 July 1991

ER -

Stressed-lap polishing of 3.5-m f/1.5 and 1.8-m f/1.0 mirrors

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