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Proceedings Paper

LINC-NIRVANA: cryogenic optics for diffraction limited beam combination
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Paper Abstract

LINC-NIRVANA is an interferometric imaging camera, which combines the two 8.4 m telescopes of the Large Binocular Telescope (LBT). The instrument operates in the wavelength range from 1.1 μm to 2.4 μm, covering the J, H and K-band, respectively. The beam combining camera (NIRCS) offers the possibility to achieve diffraction limited images with the special resolution of a 23 m telescope. The optics are designed to deliver a 10 arcsec × 10 arcsec field of view with 5 mas resolution. In this paper we describe the evolution of the cryogenic optics, from design and manufacturing to verification. Including the argumentation for decisions we made in order to present a sort of guideline for large cryo-optics. We also present the alignment and testing strategies at a detailed level.

Paper Details

Date Published: 15 October 2012
PDF: 11 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150Q (15 October 2012); doi: 10.1117/12.977782
Show Author Affiliations
Peter Bizenberger, Max-Planck-Institut für Astronomie (Germany)
Harald Baumeister, Max-Planck-Institut für Astronomie (Germany)
Tom Herbst, Max-Planck-Institut für Astronomie (Germany)
Xianyu Zhang, Max-Planck-Institut für Astronomie (Germany)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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