Spin-cast ZERODUR * mirror substrates of the 8 m class and lightweighted substrates for secondary mirrors

Rudolf W. Mueller; Hartmut W. Hoeness

doi:10.1117/12.20414

1 August 1990 Spin-cast ZERODUR * mirror substrates of the 8 m class and lightweighted substrates for secondary mirrors

Rudolf W. Mueller, Hartmut W. Hoeness

Proceedings Volume 1271, Adaptive Optics and Optical Structures; (1990) https://doi.org/10.1117/12.20414
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

The glass ceramic ZEROLXJR is excellently suited for the manufacture of mirror substrates hith is demonstrated by various astronomical telescope proj ects .The new spin casting tecbnique has been developed by ScFKYIT for the manufacture of thin monolithic mirror blanks exceeding 8 ra in diameter. This development resultel in sccirr obtaining the order for the manufacture of 4 meniscus shaped shells for the Very Large Telescope of the European Southern Observatoiy. The corresponding production facilities are currently being erected with the first casting Scheduled for the end of 1990 . Handling and suppcxtt of the huge blanks during the different process steps are the greatest challenges besides the spin-casting of about 50 t of glass . sciicrr has also performed considerable developmental work in the area of lightweighted ZEROLIJR mirror substrates which can be fabricated by applying various techniques.

Citation Download Citation

Rudolf W. Mueller and Hartmut W. Hoeness "Spin-cast ZERODUR * mirror substrates of the 8 m class and lightweighted substrates for secondary mirrors", Proc. SPIE 1271, Adaptive Optics and Optical Structures, (1 August 1990); https://doi.org/10.1117/12.20414

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available