Commissioning of the adaptive optics supported LUCI instruments at the Large Binocular Telescope: results
| Autor: | Douglas Miller, Andreas Quirrenbach, Jochen Heidt, Greg Taylor, Alexander Pramskiy, A. Puglisi, Walter Seifert, Simone Esposito, E. Pinna, Roland Gredel, D. J. Thompson |
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| Rok vydání: | 2018 |
| Předmět: |
business.industry
Image quality Computer science media_common.quotation_subject Strehl ratio Large Binocular Telescope 01 natural sciences Compensation (engineering) 010309 optics Optics Sky 0103 physical sciences Spectral resolution business Adaptive optics 010303 astronomy & astrophysics Image resolution media_common |
| Popis: | The LUCI instruments are a pair of NIR imagers and multi-object spectrographs located at the front bent Gregorian foci of the Large Binocular Telescope (LBT). One of their special features is their diffraction-limited imaging and long-slit spectroscopic capability in combination with the LBT adaptive secondary mirrors. This allows to achieve a spatial resolution down to 60mas and a spectral resolution of up to 25000. Switching from seeing-limited to diffraction-limited observations changes several operational aspects due to features such as the non-common path aberration or the flexure of the instruments. They all require novel techniques to optimize the image quality and to maximize the scientific return. Non-common path aberration can be corrected via look-up tables. For active flexure compensation the night- sky emission is used. The commissioning of the instruments in diffraction-limited mode on sky is largely finished and the instruments have been handed over to the LBT in April 2018. |
| Databáze: | OpenAIRE |
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