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Proceedings Paper

TIMMI2: a new multimode mid-infrared instrument for the ESO 3.6-m telescope
Author(s): Hans-Georg Reimann; Hendrick Linz; Ralf Wagner; Helena Relke; Hans-Ulrich Kaeufl; Eberhard Dietzsch; Martin Sperl; Josef Hron
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Paper Abstract

TIMMI2 is a focal reducer with variable magnification using a reflective collimator and various camera lenses from Silicon, CdTe, Germanium and KRS-5. The primary operating wavelength is 8-24 microns with limited access also to the 3-5 micron region. Longslit and Echelle spectroscopy up to a resolving power of 1000 are implemented with grisms. A cryogenic wire grid polarizer allows for imaging polarimetry. TIMMI2 uses a 240 X 320 As:Si detector array and is cooled by a 2 stage Gifford-McMahon cooler. Maximum field is 72 X 96 arcsec. TIMMI2 has 5 internal cryogenic functions and one external wheel holding calibration targets. TIMMI2 will be interfaced to the 3.6m telescope with a special IR adapter allowing wheel holding registration of the IR images with respect to astrometric reference frames. The instrument design, electronics and results from laboratory test will be presented. Sensitivity estimates as well as an outlook on possible astronomical programs will be given.

Paper Details

Date Published: 16 August 2000
PDF: 12 pages
Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); doi: 10.1117/12.395432
Show Author Affiliations
Hans-Georg Reimann, Astrophysikalisches Institut und Universitaets-Sternwarte Jena (Germany)
Hendrick Linz, Astrophysikalisches Institut und Universitaets-Sternwarte Jena (Germany)
Ralf Wagner, Astrophysikalisches Institut und Universitaets-Sternwarte Jena (Germany)
Helena Relke, Astrophysikalisches Institut und Universitaets-Sternwarte Jena (Germany)
Hans-Ulrich Kaeufl, European Southern Observatory (Germany)
Eberhard Dietzsch, Jena-Optronik GmbH (Germany)
Martin Sperl, Institut fuer Astronomie/Univ. Wien (Austria)
Josef Hron, Institut fuer Astronomie/Univ. Wien (Austria)


Published in SPIE Proceedings Vol. 4008:
Optical and IR Telescope Instrumentation and Detectors
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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