Giant Furnace Opens to Reveal 'Perfect' LSST Mirror Blank
Tuesday, September 2, 2008
The single-piece primary and tertiary mirror blank cast for the LSST is "perfect", say project astronomers and engineers. The Mirror Lab team opened the furnace for a close-up look at the cooled 51,900-pound mirror blank. . It is the first time a combined primary and tertiary mirror has been produced on such a large scale.