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Proceedings Paper

Commissioning of the adaptive optics supported LUCI instruments at the Large Binocular Telescope: results
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Paper Abstract

The LUCI instruments are a pair of NIR imagers and multi-object spectrographs located at the front bent Gregorian foci of the Large Binocular Telescope (LBT). One of their special features is their diffraction-limited imaging and long-slit spectroscopic capability in combination with the LBT adaptive secondary mirrors. This allows to achieve a spatial resolution down to 60mas and a spectral resolution of up to 25000. Switching from seeing-limited to diffraction-limited observations changes several operational aspects due to features such as the non-common path aberration or the flexure of the instruments. They all require novel techniques to optimize the image quality and to maximize the scientific return. Non-common path aberration can be corrected via look-up tables. For active flexure compensation the night-sky emission is used. The commissioning of the instruments in diffraction-limited mode on sky is largely finished and the instruments have been handed over to the LBT in April 2018.

Paper Details

Date Published: 6 July 2018
PDF: 15 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107020B (6 July 2018); doi: 10.1117/12.2313506
Show Author Affiliations
Jochen Heidt, Zentrum für Astronomie der Univ. Heidelberg (Germany)
Alexander Pramskiy, Zentrum für Astronomie der Univ. Heidelberg (Germany)
David Thompson, Large Binocular Telescope Observatory (United States)
Walter Seifert, Zentrum für Astronomie der Univ. Heidelberg (Germany)
Roland Gredel, Max-Planck-Institut für Astronomie (Germany)
Doug Miller, Large Binocular Telescope Observatory (United States)
Greg Taylor, Large Binocular Telescope Observatory (United States)
Simone Esposito, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Alfio Puglisi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Enrico Pinna, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Andreas Quirrenbach, Zentrum für Astronomie der Univ. Heidelberg (Germany)


Published in SPIE Proceedings Vol. 10702:
Ground-based and Airborne Instrumentation for Astronomy VII
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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