Manufacturing thin shell mirrors for adaptive optics

Abstract

This study presents the steps of manufacturing of thin shell mirrors for adaptive optics. TNO, in cooperation with the University of Hawaii Institute for Astrophysics, UC Santa Cruz, Fraunhofer IPT, NOVA and Huygens Optics, have been developing adaptive secondary mirrors (ASM) for the UH 2.2 meter and NASA IRTF telescopes. The ASM shells are slumped convex aspheres, with a 620 and 243 mm diameter respectively. The thin shell mirrors have fast actuators mounted on the backside to correct the wavefront errors caused by atmospheric turbulence. The manufacturing of thin shell mirror is the highlighted part of complete manufacturing steps of ASM for this study. This part includes anti-sticking coating for slumping, slumping, shape correction with grinding/polishing/MRF, and coating of front and backside of the mirror, as well as metrology. The manufacturing of the thin shells is one of the critical technologies for deformable mirrors for adaptive optics.

Authors 20

1. Bart Snijders

   Netherlands Organisation for Applied Scientific Research

   Affiliation as printed

   TNO (Netherlands)

2. Nagihan Sezgin

   Netherlands Organisation for Applied Scientific Research

   Affiliation as printed

   TNO (Netherlands)

3. Fred Kampheus

   Netherlands Organisation for Applied Scientific Research

   Affiliation as printed

   TNO (Netherlands)

4. Stefan Kuiper

   Netherlands Organisation for Applied Scientific Research

   Affiliation as printed

   TNO (Netherlands)

5. Arjo Bos

   Netherlands Organisation for Applied Scientific Research

   Affiliation as printed

   TNO (Netherlands)

6. Jan de Vreugd

   Netherlands Organisation for Applied Scientific Research

   Affiliation as printed

   TNO (Netherlands)

7. Wouter A. Jonker

   Netherlands Organisation for Applied Scientific Research

   Affiliation as printed

   TNO (Netherlands)

8. Mark Chun

   University of Hawaiʻi at Mānoa · University of Hawaii System

   Affiliation as printed

   University of Hawai (United States)

9. Philip M. Hinz

   University of California, Santa Cruz

   Affiliation as printed

   University of California Santa Cruz (United States)

10. Bert Dekker

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

11. Douwe Jan IJlst

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

12. Bart van Venrooy

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

13. Wendy d. Kleijn

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

14. Robin van Buuren

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

15. Matias Kidron

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

16. Esperanza Vielba Salcedo

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

17. Glenn v. Zalen

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

18. Stefan Zaal

    Netherlands Organisation for Applied Scientific Research

    Affiliation as printed

    TNO (Netherlands)

19. Constantin Meiners Aachen Fraunhofer IPT

    Fraunhofer Institute for Production Technology IPT

    Affiliation as printed

    Fraunhofer IPT (Germany)

20. Rik ter Horst
    Affiliation as printed

    Nova-Astron (Netherlands)