Spincasting of a 3.5-m diameter f/1.75 mirror blank in borosilicate glass

L. W. Goble, J Roger P Angel, J. M. Hill, E. J. Mannery

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A 3.5-meter-diameter telescope primary-mirror blank was cast from E6 borosilicate glass at the University of Arizona, Steward Observatory Mirror Lab. A light-weighted-hollow design was made with a faceplate and backplate separated by a middle volule of ribs in a honeycomb pattern. The curvature of the F/1.75-mirror face was formed by spinning the melted glass at 8.54 RPM. A telescope on Apache Point in New Mexico will use this mirror.

Original languageEnglish (US)
Pages (from-to)300-310
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume966
DOIs
StatePublished - Jan 29 1989

Fingerprint

Borosilicate glass
blanks
borosilicate glass
Mirror
Mirrors
mirrors
Telescopes
Telescope
telescopes
Honeycomb
Observatories
Observatory
metal spinning
casts
hollow
observatories
Curvature
curvature
Face
Glass

ASJC Scopus subject areas

  • Applied Mathematics
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Cite this

Spincasting of a 3.5-m diameter f/1.75 mirror blank in borosilicate glass. / Goble, L. W.; Angel, J Roger P; Hill, J. M.; Mannery, E. J.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 966, 29.01.1989, p. 300-310.

Research output: Contribution to journalArticle

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