تقرير
Near-infrared wavefront sensing for the VLT interferometer
| العنوان: | Near-infrared wavefront sensing for the VLT interferometer |
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| المؤلفون: | Hippler, Stefan, Brandner, Wolfgang, Clénet, Yann, Hormuth, Felix, Gendron, Eric, Henning, Thomas, Klein, Ralf, Lenzen, Rainer, Meschke, Daniel, Naranjo, Vianak, Neumann, Udo, Ramos, José Ricardo, Rohloff, Ralf-Rainer, Eisenhauer, Frank |
| سنة النشر: | 2008 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics |
| الوصف: | The very large telescope (VLT) interferometer (VLTI) in its current operating state is equipped with high-order adaptive optics (MACAO) working in the visible spectrum. A low-order near-infrared wavefront sensor (IRIS) is available to measure non-common path tilt aberrations downstream the high-order deformable mirror. For the next generation of VLTI instrumentation, in particular for the designated GRAVITY instrument, we have examined various designs of a four channel high-order near-infrared wavefront sensor. Particular objectives of our study were the specification of the near-infrared detector in combination with a standard wavefront sensing system. In this paper we present the preliminary design of a Shack-Hartmann wavefront sensor operating in the near-infrared wavelength range, which is capable of measuring the wavefronts of four telescopes simultaneously. We further present results of our design study, which aimed at providing a first instrumental concept for GRAVITY. Comment: 10 pages, 7 figures, to appear in "Ground-based and Airborne Instrumentation for Astronomy II" SPIE conference, Marseille, 23-28 June 2008 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1117/12.789053 |
| URL الوصول: | http://arxiv.org/abs/0808.1637 |
| رقم الأكسشن: | edsarx.0808.1637 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1117/12.789053 |
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