Skip to main content
SpringerLink
Log in

Large mirror figuring and testing

  • Fourth Session Telescope Engineering and Fabrication of Large Mirrors
  • Published:
Astrophysics and Space Science Aims and scope Submit manuscript

Abstract

We describe a method for figuring and testing large aspheric mirrors using a rectangular, flexible lap (the so-called ‘Membrane Tool’) and a vibration stabilized interferometer. The rear side of the lap is covered with computer controlled dynamic pressure actuators which determine the amount of material to be removed for surface error correction. This method has been developed in the laboratory and tested to some extent by figuring thef/2.2 primary of the 3.6 m ESO-NTT. We describe the ongoing developments and the manufacturing plan for 8 m-class mirrors.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

Download references

Author information

Authors and Affiliations

  1. Carl Zeiss O-Labor, Oberkochen, F.R.G.

    K. Beckstette, M. Küchel & E. Heynacher

Authors
  1. K. Beckstette
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Küchel
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. E. Heynacher
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Beckstette, K., Küchel, M. & Heynacher, E. Large mirror figuring and testing. Astrophys Space Sci 160, 207–214 (1989). https://doi.org/10.1007/BF00642772

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00642772

Keywords

Search

Navigation