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Proceedings Paper

Dark tip-tilt sensing
Author(s): Carmelo Arcidiacono; Roberto Ragazzoni; Valentina Viotto; Maria Bergomi; Jacopo Farinato; Demetrio Magrin; Marco Dima; Marco Gullieuszik; Luca Marafatto
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Paper Abstract

Dark wavefront sensing in its simplest and more crude form is a quad-cell with a round spot of dark ink acting as occulting disk at the center. This sensor exhibits fainter limiting magnitude than a conventional quad-cell, providing that the size of the occulting disk is slightly smaller than the size of the spot and smaller than the residual jitter movement in closed loop. We present simulations focusing a generic Adaptive Optics system using Natural Guide Stars to provide the tip-tilt signal. We consider a jitter spectrum of the residual correction including amplitudes exceeding the dark disk size.

Paper Details

Date Published: 27 July 2016
PDF: 8 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99096J (27 July 2016); doi: 10.1117/12.2232460
Show Author Affiliations
Carmelo Arcidiacono, INAF - Osservatorio Astronomico di Bologna (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
Roberto Ragazzoni, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Valentina Viotto, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Maria Bergomi, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Jacopo Farinato, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Demetrio Magrin, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Marco Dima, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Marco Gullieuszik, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Luca Marafatto, ADONI - Lab. Nazionale di Ottiche Adattive (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)


Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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