The goal of this article is to describe the manufacture of lightweighted, 4 m diameter mirror blanks made of Zerodur in a fast and economical manner. Basic experiments have been performed involving production techniques and processes which may be usable to manufacture lightweighted mirrors in a mass-production format. On the basis of experiences gained through these experiments, a general consideration of the necessary equipment and further experimentation needed to develop the most promising of the processes will be described.
A. J. Marker,
"Lightweight Large Mirror Blanks Of Zerodur", Proc. SPIE 0571, Large Optics Technology, (21 February 1986); doi: 10.1117/12.950381; https://doi.org/10.1117/12.950381