Half time on the production of 949 ZERODUR ELT M1 segment blanks

Thomas Werner; Ralf Jedamzik; Thomas Westerhoff

doi:10.1117/12.2626585

29 August 2022 Half time on the production of 949 ZERODUR ELT M1 segment blanks

Thomas Werner, Ralf Jedamzik, Thomas Westerhoff

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121880E (2022) https://doi.org/10.1117/12.2626585
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

The fact that SCHOTT has been awarded the ELT M1 production contract with the requirement to produce 949 1.5 m diameter mirror segment blanks until 2024, has not influenced the ZERODUR® production for industrial applications at all. ZERODUR® production for ELT is only a fraction of the total amount of material processed today. SCHOTT has expanded the production capacity and upgraded capabilities in time already many years ago reaching a significant milestone in 2019 with a brand new modern ZERODUR® dedicated CNC grinding facility to be ready for the future of ZERODUR® applications. Now, at about half time of the production of 949 ELT M1 segment blanks, the excellent results on the material properties and dimensional characteristics achieved on 486 ELT M1 segment blanks underline the high standard in ZERODUR® production. This paper gives an update on the achievements at half time of the project.

Conference Presentation

Citation Download Citation

Thomas Werner, Ralf Jedamzik, and Thomas Westerhoff "Half time on the production of 949 ZERODUR ELT M1 segment blanks", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121880E (29 August 2022); https://doi.org/10.1117/12.2626585

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