The calibration procedure of the LINC-NIRVANA ground and high layer WFS
| Autor: | Arcidiacono, Carmelo, Santhakumari, Kalyan Kumar Radhakrishnan, Viotto, Valentina, Bergomi, Maria, Briegel, Florian, Bertram, Thomas, Marafatto, Luca, Herbst, Tom, Farinato, Jacopo, Ragazzoni, Roberto, Hofferbert, Ralph, Kuerster, Martin, Kittman, Frank, Berwein, Juergen, Baumeister, Harald |
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| Rok vydání: | 2018 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | LINC--NIRVANA (LN) is an MCAO module currently mounted on the Rear Bent Gregorian focus of the Large Binocular Telescope (LBT). It mounts a camera originally designed to realize the interferometric imaging focal station of the telescopes. LN follows the LBT binocular strategy having two twin channels: a double Layer Oriented Multi-Conjugate Adaptive Optics system assisting the two arms, supplies high order wave-front correction. In order to counterbalance the field rotation, a mechanical derotation is applied for the two ground wave-front sensors, and an optical (K-mirror) one for the two high layers sensors, fixing the positions of the focal planes with respect to the pyramids aboard the wavefront sensors. The derotation introduces a pupil images rotation on the wavefront sensors, changing the projection of the deformable mirrors on the sensor consequently. Comment: 9 pages, 6 figures, proceeding of the SPIE Astronomical Telescopes + Instrumentation meeting, Conference Adaptive Optics Systems VI held in Austin Convention Center, Austin, Texas, United States, 10 - 15 June 2018 |
| Databáze: | arXiv |
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