STEPS TOWARD 8m HONEYCOMB MIRROR BLANKS: III 1. 8m HONEYCOMB SANDWICH BLANKS CAST FROM BOROSILICATE GLASS.

J Roger P Angel, J. M. Hill

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

As part of a program leading to the production of 8m honeycomb mirrors, the authors have recently made two 1. 8m blanks. These have honeycomb sandwich form, with hexagonal honeycomb ribs sandwiched between front and back plates. Each is cast in one piece from borosilicate glass, using techniques that can be extended to larger sizes. Both blanks are of high quality, free from cracks and voids, and with an adequately low bubble content. The second and better blank, made of Ohara's E6 glass, is now to be figured to high precision, 0. 25 arcsecond images, and is to be tested for an extended period in the Multiple Mirror Telescope.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Pages184-193
Number of pages10
Volume444
ISBN (Print)0892523794
StatePublished - 1984

Fingerprint

honeycomb mirrors
Borosilicate glass
blanks
borosilicate glass
Telescopes
casts
Mirrors
Cracks
Glass
voids
bubbles
cracks
telescopes
mirrors
glass

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Angel, J. R. P., & Hill, J. M. (1984). STEPS TOWARD 8m HONEYCOMB MIRROR BLANKS: III 1. 8m HONEYCOMB SANDWICH BLANKS CAST FROM BOROSILICATE GLASS. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 444, pp. 184-193). SPIE.

STEPS TOWARD 8m HONEYCOMB MIRROR BLANKS : III 1. 8m HONEYCOMB SANDWICH BLANKS CAST FROM BOROSILICATE GLASS. / Angel, J Roger P; Hill, J. M.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 444 SPIE, 1984. p. 184-193.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Angel, JRP & Hill, JM 1984, STEPS TOWARD 8m HONEYCOMB MIRROR BLANKS: III 1. 8m HONEYCOMB SANDWICH BLANKS CAST FROM BOROSILICATE GLASS. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 444, SPIE, pp. 184-193.
Angel JRP, Hill JM. STEPS TOWARD 8m HONEYCOMB MIRROR BLANKS: III 1. 8m HONEYCOMB SANDWICH BLANKS CAST FROM BOROSILICATE GLASS. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 444. SPIE. 1984. p. 184-193
Angel, J Roger P ; Hill, J. M. / STEPS TOWARD 8m HONEYCOMB MIRROR BLANKS : III 1. 8m HONEYCOMB SANDWICH BLANKS CAST FROM BOROSILICATE GLASS. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 444 SPIE, 1984. pp. 184-193
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