LINC-NIRVANA: cryogenic optics for diffraction limited beam combination

Peter Bizenberger; Harald Baumeister; Tom Herbst; Xianyu Zhang

doi:10.1117/12.977782

15 October 2012 LINC-NIRVANA: cryogenic optics for diffraction limited beam combination

Peter Bizenberger, Harald Baumeister, Tom Herbst, Xianyu Zhang

Proceedings Volume 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 84150Q (2012) https://doi.org/10.1117/12.977782
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

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.

Citation Download Citation

Peter Bizenberger, Harald Baumeister, Tom Herbst, and Xianyu Zhang "LINC-NIRVANA: cryogenic optics for diffraction limited beam combination", Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150Q (15 October 2012); https://doi.org/10.1117/12.977782

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