The Subaru 8.3 m mirror blank was sent in the summer of 1994 from Corning to Contraves US near Pittsburgh for polishing and figuring. It is expected to be delivered to the summit of Mauna Kea by the end of 1997. Hole boring on rear side is under process and the turnover of the mirror is planned for this autumn. Fabrication of the cell and actuators as well as that of the mirror control system have been finished in Japan. Performance tests using the actual mirror cell and a steel dummy mirror have shown the Subaru mirror support system satisfies the technical specification set forth in the design phase.

Date Published: 21 March 1997
PDF: 6 pages
Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); doi: 10.1117/12.269062

Published in SPIE Proceedings Vol. 2871:
Optical Telescopes of Today and Tomorrow
Arne L. Ardeberg, Editor(s)