The impact of micro-vibrations on the METIS instrument

Abstract

The Mid-infrared ELT Imager and Spectrograph (METIS) is one of the first-light scientific instruments for the ELT with over 75 optical components. The science cases of METIS impose tight stability requirements on the optical performance. To assess whether the optical performance is harmed by micro-vibrations, the effect of numerous vibration sources on the optical stability are analyzed. We present the analysis approach and results for METIS. This includes finite element analysis to obtain transfer functions, compute rigid body motion response of optical elements and assess the optical impact by ray-tracing.

Authors 14

1. Dennis Dolkens

   Netherlands Institute for Radio Astronomy

   Affiliation as printed

   ASTRON (Netherlands)

2. Mirka Lewińska-Maresca

   Netherlands Institute for Radio Astronomy

   Affiliation as printed

   ASTRON (Netherlands)

3. Dirk Lesman

   Netherlands Institute for Radio Astronomy

   Affiliation as printed

   ASTRON (Netherlands)

4. Babak Sedghi

   European Southern Observatory

   Affiliation as printed

   European Southern Observatory (Germany)

5. Dan Pilbauer

   European Southern Observatory

   Affiliation as printed

   European Southern Observatory (Germany)

6. Gerd H. Jakob

   European Southern Observatory

   Affiliation as printed

   European Southern Observatory (Germany)

7. Michael Mueller

   European Southern Observatory

   Affiliation as printed

   European Southern Observatory (Germany)

8. Harald Baumeister

   Max Planck Institute for Astronomy

   Affiliation as printed

   Max-Planck-Institut für Astronomie (Germany)

9. Armin Huber

   Max Planck Institute for Astronomy

   Affiliation as printed

   Max-Planck-Institut für Astronomie (Germany)

10. A. Amorim

    University of Lisbon

    Affiliation as printed

    Univ. de Lisboa (Portugal)

11. Alastair Macleod

    Science and Technology Facilities Council · UK Astronomy Technology Centre

    Affiliation as printed

    UK Astronomy Technology Ctr., Science and Technology Facilities Council (United Kingdom)

12. Michael Wiest

    University of Cologne

    Affiliation as printed

    Univ. zu Köln (Germany)

13. Felix C. M. Bettonvil Aachen Leiden Observatory

    Leiden University · Leiden Observatory

    Affiliation as printed

    Leiden Observatory, Leiden Univ. (Netherlands)

14. Bernhard R. Brandl Aachen Leiden Observatory

    Leiden University · Leiden Observatory

    Affiliation as printed

    Leiden Observatory, Leiden Univ. (Netherlands)