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Proceedings Paper

SPIFFI image slicer: high-precision optics at cryogenic temperatures
Author(s): Matthias Tecza; Frank Eisenhauer; Christof Iserlohe; Niranjan A. Thatte; Roberto Abuter; Claudia Roehrle; Juergen Schreiber
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Paper Abstract

SPIFFI is the near-infrared integral field spectrograph of the SINFONI VLT instrument. SPIFFI uses an image slicer with plane mirrors as its integral field unit. The integral field unit consists of two stacks of mirrors, each with 32 mirrors, rearranging a two-dimensional field-of-view of 32 x 32 pixels into a one-dimensional pseudo slit, which is fed into a long-slit spectrograph. The image slicer is constructed solely from Zerodur and is operated at a cryogenic temperature of 77 Kelvin. Only optical contacting is used for the assembly of the individual slicer mirrors and the image slicer on its base-plate. The special slicer mount holds the image slicer stress-free and compensates for the different thermal coefficients of expansion of the Zerodur image slicer and the Aluminium mount. Tests at room and cryogenic temperatures show the performance of the image slicer, the durability of the optical contacting technique, and the accuracy of the slicer mount.

Paper Details

Date Published: 30 January 2003
PDF: 9 pages
Proc. SPIE 4842, Specialized Optical Developments in Astronomy, (30 January 2003); doi: 10.1117/12.457392
Show Author Affiliations
Matthias Tecza, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Frank Eisenhauer, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Christof Iserlohe, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Niranjan A. Thatte, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Roberto Abuter, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Claudia Roehrle, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Juergen Schreiber, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)


Published in SPIE Proceedings Vol. 4842:
Specialized Optical Developments in Astronomy
Eli Atad-Ettedgui; Sandro D'Odorico, Editor(s)

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