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  The calibration procedure of the LINC-NIRVANA ground and high layer WFS

Arcidiacono, C., Santhakumari, K. K. R., Viotto, V., Bergomi, M., Briegel, F., Bertram, T., et al. (2018). The calibration procedure of the LINC-NIRVANA ground and high layer WFS.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-CF34-8 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-CF35-7
Genre: Proceedings

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https://ui.adsabs.harvard.edu/abs/2018SPIE10703E..4RA (Any fulltext)
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 Creators:
Arcidiacono, Carmelo1, Author
Santhakumari, Kalyan Kumar R.1, Author
Viotto, Valentina1, Author
Bergomi, Maria1, Author
Briegel, Florian1, Author
Bertram, Thomas1, Author
Marafatto, Luca1, Author
Herbst, Tom1, Author
Farinato, Jacopo1, Author
Ragazzoni, Roberto1, Author
Hofferbert, Ralph1, Author
Kürster, Martin1, Author
Kittmann, Frank1, Author
Berwein, Jürgen1, Author
Baumeister, Harald1, Author
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

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Free keywords: Astrophysics - Instrumentation and Methods for Astrophysics
 Abstract: LINC-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.

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 Dates: 2018
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISBN: 9781510619593
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Title: Adaptive Optics Systems VI
Place of Event: -
Start-/End Date: 2018

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