Cer-Vit

Cer-Vit

(ser -vit) trademark a glass-ceramic material that expands and contracts very little when its temperature changes and is thus used in telescope optics.
References in periodicals archive ?
04' E Part of the Royal Observatory, Edinburgh, this telescope uses an Owens-Illinois Cer-Vit 1.83-m primary.
The primary is Owens-Illinois Cer-Vit. SOAR 4-m Telescope 4.2 m f/16 Ritchey-Chretien Altazimuth Cerro Pachon, Chile 30[degrees] 21' S 70[degrees] 49' W 2,701 m Scheduled for completion in 2002, this instrument is being built by the Southern Observatory for Astrophysical Research, a consortium of Brazil, Michigan State Univ., National Optical Astronomy Observatory, and the Univ.
Among Jarrett's initial projects was refurbishment of the Rockefeller telescope, including replacing its original primary with a Cer-Vit one.