TIMMI2, a new multimode mid-infrared instrument for the ESO 3.6m telescope
- Autor(en)
- Hans-Georg Reimann, Hendrik Linz, Ralf Wagner, Helena Relke, Hans Ulrich Käufl, Eberhard Dietzsch, Josef Hron
- Abstrakt
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 240×320 As:Si detector array and is cooled by a 2 stage Gifford-McMahon cooler. Maximum field is 72×96 arcsec. TIMMI2 has 5 internal cryogenic functions (aperture/slit wheel, polarizer insertion and rotation, filter/grism wheel and lens wheel) and one external wheel holding calibration targets. TIMMI2 will be interfaced to the 3.6m telescope with a special infrared adapter allowing for sub-arcsec registration of the infrared images with respect to astrometric reference frames. The instrument design, electronics and results from laboratory tests will be presented. Sensitivity estimates as well as an outlook on possible astronomical programs will be given.
- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- Friedrich-Schiller-Universität Jena, European Southern Observatory (Germany)
- DOI
- https://doi.org/10.1117/12.395432
- Publikationsdatum
- 2000
- ÖFOS 2012
- 103003 Astronomie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/timmi2-a-new-multimode-midinfrared-instrument-for-the-eso-36m-telescope(fea87fd7-97b6-46f0-944b-bb41aca80232).html