ARCIDIACONO, CARMELOCARMELOARCIDIACONORADHAKRISHNAN SANTHAKUMARI, KALYAN KUMARKALYAN KUMARRADHAKRISHNAN SANTHAKUMARIVIOTTO, VALENTINAVALENTINAVIOTTOBERGOMI, MariaMariaBERGOMIBriegel, FlorianFlorianBriegelBertram, ThomasThomasBertramMARAFATTO, LucaLucaMARAFATTOHerbst, TomTomHerbstFARINATO, JACOPOJACOPOFARINATORAGAZZONI, RobertoRobertoRAGAZZONIHofferbert, RalphRalphHofferbertKürster, MartinMartinKürsterKittmann, FrankFrankKittmannBerwein, JürgenJürgenBerweinBaumeister, HaraldHaraldBaumeister2021-01-052021-01-052018978151061959397815106196090277-786Xhttp://hdl.handle.net/20.500.12386/29484LINC-NIRVANA (LN) is a MCAO module currently mounted on the Rear Bent Gregorian focus of the Large Binocular Telescope (LBT). It mounts a camera originally design to realize the interferometric imaging focal station of the LBT. LN follows the LBT strategy having two twin channels: a double Layer Oriented multi-conjugate adaptive optics system assists the two arms, supplying 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. The soft real-time computer load the matrix corresponding to the needed at one degree step. Calibrations were performed in daytime only and using optical fibers.ELETTRONICOenConference paper10.1117/12.23131522-s2.0-85053541071000452819300143https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10703/2313152/The-calibration-procedure-of-the-LINC-NIRVANA-ground-and-high/10.1117/12.2313152.full?SSO=1https://ui.adsabs.harvard.edu/link_gateway/2018SPIE10703E..4RA/EPRINT_HTML2018SPIE10703E..4RAFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation