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Proceedings Paper

The Wendelstein three channel imager (3KK): alignment, commissioning, and first results
Author(s): F. Lang-Bardl; R. Bender; C. Goessl; F. Grupp; H.-J. Hess; J. Kaminski; K. Hodapp; U. Hopp; S. Jacobson; H. Kravcar; A. Monna; W. Mitsch; J. Schlichter; M. Wegner
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Paper Abstract

The Ludwig-Maximilians-Universität München operates an astrophysical observatory on the summit of Mt. Wendelstein which was equipped with a modern 2m-class robotic telescope in 20111-3. One of the two Nasmyth ports is designed to deliver the excellent (< 0.8” median) seeing of the site for a FoV of 60 arcmin2 without any corrector optics at optical and near infrared (NIR) wavebands. This port hosts a three channel imager whose design was already presented in Lang-Bardl et al. 2010.4 It is designed to efficiently support observations of targets of opportunities like Gamma-Ray-bursts or efficient photometric redshift determination of sources identified by surveys like PanSTARS, Planck (SZ) or eROSITA. The covered wavelength range is 340 nm to 2.3 microns. The camera provides standard broadband filters (Sloan, Y, J, H, Ks) and 5 narrowband filters (OI, Hα, SII, H2, Brλ). The narrowband filters will enable deep studies of star forming regions. We present the final design of the camera, the assembly and alignment procedure performed in the laboratory before we transported the instrument to the observatory. We also show first results of the achieved on sky performance concerning image quality and efficiency of the camera in the different filter passbands.

Paper Details

Date Published: 9 August 2016
PDF: 8 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990844 (9 August 2016); doi: 10.1117/12.2232039
Show Author Affiliations
F. Lang-Bardl, Univ.-Sternwarte München (Germany)
R. Bender, Univ.-Sternwarte München (Germany)
Max-Planck Institut für extraterrestrische Physik (Germany)
C. Goessl, Univ.-Sternwarte München (Germany)
F. Grupp, Univ.-Sternwarte München (Germany)
Max-Planck Institut für extraterrestrische Physik (Germany)
H.-J. Hess, Univ.-Sternwarte München (Germany)
J. Kaminski, Univ.-Sternwarte München (Germany)
K. Hodapp, Institute for Astronomy, Univ. of Hawai'i (United States)
U. Hopp, Univ.-Sternwarte München (Germany)
Max-Planck Institut für extraterrestrische Physik (Germany)
S. Jacobson, Institute for Astronomy, Univ. of Hawai'i (United States)
H. Kravcar, Univ.-Sternwarte München (Germany)
A. Monna, Max-Planck-Institut für extraterrestrische Physik (Germany)
W. Mitsch, Univ.-Sternwarte München (Germany)
J. Schlichter, Univ.-Sternwarte München (Germany)
M. Wegner, Univ.-Sternwarte München (Germany)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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