A method to make honeycomb sandwich mirrors has been developed, casting in one piece in a complex mold. The furnace spins while the glass is liquid to form the curved face of the mirror. Following tests at the 1.8 m size, a facility for casting 8 m mirrors has been constructed, with a 12 m diameter turntable.
Very Large Telescopes and their Instrumentation, Vol. 2
- Pub Date:
- October 1988