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

26 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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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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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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