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Astrophysics and Space Science

, Volume 286, Issue 1–2, pp 73–83 | Cite as

MIDI – the 10 μm instrument on the VLTI

  • Ch. Leinert
  • U. Graser
  • F. Przygodda
  • L.B.F.M. Waters
  • G. Perrin
  • W. Jaffe
  • B. Lopez
  • E.J. Bakker
  • A. Böhm
  • O. Chesneau
  • W.D. Cotton
  • S. Damstra
  • J. de Jong
  • A.W. Glazenborg-Kluttig
  • B. Grimm
  • H. Hanenburg
  • W. Laun
  • R. Lenzen
  • S. Ligori
  • R.J. Mathar
  • J. Meisner
  • S. Morel
  • W. Morr
  • U. Neumann
  • J.-W. Pel
  • P. Schuller
  • R.-R. Rohloff
  • B. Stecklum
  • C. Storz
  • O. von der Lühe
  • K. Wagner
Article

Abstract

After more than five years of preparation, the mid-infrared interferometric instrument MIDI has been transported to Paranal where it will undergo testing and commissioning on theVery Large Telescope Interferometer VLTI from the end of 2002through large part of this year 2003. Thereafter it will be available as a user instrument to perform interferometric observations over the8 μm–13 μm wavelength range, with a spatial resolution of typically 20 milliarcsec, a spectral resolution of up to 250, and an anticipated point source sensitivity of N = 3–4 mag or 1–2.5 Jy for self –fringe tracking, which will be the only observing mode during the first months of operation. We describe the layout of the instrument, laboratory tests, and expected performance, both for broadband and spectrally resolved observing modes. We also briefly outline the planned guaranteed time observations.

VLTI MIDI interferometry mid-infrared thermal infrared 

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References

  1. Bakker, E.J., Przygodda, F., Chesneau, O. and Jaffe, W.: 2003, MIDI scientific and technical observing modes, SPIE 4838, 905–916.ADSGoogle Scholar
  2. Bester, M., Danchi,W.C. and Townes, C.H.: 1990, Long baseline interferometer for the mid-infrared, SPIE 1237, 40–48.ADSGoogle Scholar
  3. Glazenborg-Kluttig, A.W., Przygodda, F., Hanenburg, H., Morel, S., Pel, J.-W.: 2003, Realization of the MIDI Cold Optics, SPIE 4838, 1171–1181.ADSGoogle Scholar
  4. Ligori, S., Graser, U., Grimm, B. and Klein, R.: 2002, in: Kona, W. Traub (ed.), Experiences with the Raethyon Si:As IBC Detector Arrays for Mid-IR Interferometric Observations, SPIE 4838, 774–785.Google Scholar
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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • Ch. Leinert
    • 1
  • U. Graser
    • 1
  • F. Przygodda
    • 1
  • L.B.F.M. Waters
    • 2
  • G. Perrin
    • 3
  • W. Jaffe
    • 4
  • B. Lopez
    • 5
  • E.J. Bakker
    • 4
  • A. Böhm
    • 1
  • O. Chesneau
    • 1
  • W.D. Cotton
    • 6
  • S. Damstra
    • 7
  • J. de Jong
    • 4
  • A.W. Glazenborg-Kluttig
    • 7
  • B. Grimm
    • 1
  • H. Hanenburg
    • 7
  • W. Laun
    • 1
  • R. Lenzen
    • 1
  • S. Ligori
    • 1
  • R.J. Mathar
    • 1
  • J. Meisner
    • 4
  • S. Morel
    • 8
  • W. Morr
    • 1
  • U. Neumann
    • 1
  • J.-W. Pel
    • 9
  • P. Schuller
    • 1
  • R.-R. Rohloff
    • 1
  • B. Stecklum
    • 10
  • C. Storz
    • 1
  • O. von der Lühe
    • 11
  • K. Wagner
    • 1
  1. 1.Max-Planck-Institut für AstronomieHeidelbergGermany
  2. 2.Astronomical InstituteUniversity of AmsterdamThe Netherlands
  3. 3.DESPAObservatoire de Paris-MeudonFrance
  4. 4.Sterrewacht LeidenUniversity of LeidenThe Netherlands
  5. 5.Observatoire de la Côte d'AzurNiceFrance
  6. 6.NRAOCharlottesvilleUSA
  7. 7.ASTRONDwingelooThe Netherlands
  8. 8.ESOGarchingGermany
  9. 9.Kapteyn ObservatoryUniversity of GroningenThe Netherlands
  10. 10.Thüringer Landessternwarte TautenburgGermany
  11. 11.Kiepenheuer-Institut für SonnenphysikFreiburgGermany

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