Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
2016 Photonics Buyers' Guide Clearance! – Use Coupon Code FC16 to save 60%!
share
Email Facebook Twitter Google+ LinkedIn Comments

Subaru Telescope Gets 27-ft Mirror

Photonics Spectra
Nov 1998
A team of opticians has completed a one-piece, 27-ft-diameter mirror that soon will be incorporated into the Subaru Telescope, which is under construction at the summit of Mauna Kea in Hawaii.
Led by Scott Smith of Contraves Brashear Systems of Wampum, Pa., the group removed more than 9 tons of material from the original 33-ton piece of glass. The glass features a mean residual surface error of less than 0.0000005 and has a thickness of 8 in.
Delivered to Hawaii in September, the mirror will be supported by 261 computer-controlled actuators, used to prevent wind and gravity from distorting it. The mirror is to be assembled in the telescope in January 1999.


Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!