Steps toward 8m honeycomb mirrors vii. Spin casting an experimental f/11.8m honeycomb blank of borosilicate glass

L. Goble; J. R.P. Angel; J. M. Hill

doi:10.1117/12.950389

Steps toward 8m honeycomb mirrors vii. Spin casting an experimental f/11.8m honeycomb blank of borosilicate glass

L. Goble, J. R.P. Angel, J. M. Hill

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

In March 1985 a 1.8m diameter, f/1 focal ratio, lightweighted honeycomb sandwich mirror blank was cast at the Steward Observatory Mirror Laboratory. The front surface curvature was formed by spinning molten borosilicate glass at 15.6 rpm. The purpose of the casting was to test the method to be used to make 8m honeycomb mirrors. The blank will be used to test a polishing method for f/1 paraboloids.

Original language	English (US)
Pages (from-to)	92-105
Number of pages	14
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	571
DOIs	https://doi.org/10.1117/12.950389
State	Published - Feb 21 1986

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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abstract = "In March 1985 a 1.8m diameter, f/1 focal ratio, lightweighted honeycomb sandwich mirror blank was cast at the Steward Observatory Mirror Laboratory. The front surface curvature was formed by spinning molten borosilicate glass at 15.6 rpm. The purpose of the casting was to test the method to be used to make 8m honeycomb mirrors. The blank will be used to test a polishing method for f/1 paraboloids.",

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N2 - In March 1985 a 1.8m diameter, f/1 focal ratio, lightweighted honeycomb sandwich mirror blank was cast at the Steward Observatory Mirror Laboratory. The front surface curvature was formed by spinning molten borosilicate glass at 15.6 rpm. The purpose of the casting was to test the method to be used to make 8m honeycomb mirrors. The blank will be used to test a polishing method for f/1 paraboloids.

AB - In March 1985 a 1.8m diameter, f/1 focal ratio, lightweighted honeycomb sandwich mirror blank was cast at the Steward Observatory Mirror Laboratory. The front surface curvature was formed by spinning molten borosilicate glass at 15.6 rpm. The purpose of the casting was to test the method to be used to make 8m honeycomb mirrors. The blank will be used to test a polishing method for f/1 paraboloids.

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

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Steps toward 8m honeycomb mirrors vii. Spin casting an experimental f/11.8m honeycomb blank of borosilicate glass

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