Share Email Print
cover

Proceedings Paper

Spincasting Of A 3.5-m Diameter f/1.75 Mirror Blank In Borosilicate Glass
Author(s): L W Goble; J . R.P Angel; J. M Hill; E J. Mannery
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 29 January 1989
PDF: 9 pages
Proc. SPIE 0966, Advances in Fabrication and Metrology for Optics and Large Optics, (29 January 1989); doi: 10.1117/12.948076
Show Author Affiliations
L W Goble, University of Arizona (United States)
J . R.P Angel, University of Arizona (United States)
J. M Hill, University of Arizona (United States)
E J. Mannery, University of Washington (United States)


Published in SPIE Proceedings Vol. 0966:
Advances in Fabrication and Metrology for Optics and Large Optics
Jones B. Arnold; Robert E. Parks, Editor(s)

© SPIE. Terms of Use
Back to Top