Optical calibration and testing of the E-ELT M4 adaptive mirror

P. Spanò; A. Bianco; R. Briguglio; M. Cecconi; L. Miglietta; E. Molinari; G. Pariani; A. Riccardi; M. Riva; D. Tresoldi; M. Xompero; F. Zerbi

doi:10.1117/12.926008

13 September 2012 Optical calibration and testing of the E-ELT M4 adaptive mirror

P. Spanò, A. Bianco, R. Briguglio, M. Cecconi, L. Miglietta, E. Molinari, G. Pariani, A. Riccardi, M. Riva, D. Tresoldi, M. Xompero, F. Zerbi

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84473O (2012) https://doi.org/10.1117/12.926008
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Innovative optical interferometry test setups and control software techniques have been proposed for the E-ELT M4 adaptive optics mirror. The system is composed of three sub-systems: a CGH-based optical test tower, delivering a 1.5- m collimated beam, for fast simultaneous acquisition of large areas; a stitching interferometer, to calibrate at higher spatial frequencies, on smaller areas; and an optical piston sensor to remove differential piston and tilt between adjacent mirror segments.

Citation Download Citation

P. Spanò, A. Bianco, R. Briguglio, M. Cecconi, L. Miglietta, E. Molinari, G. Pariani, A. Riccardi, M. Riva, D. Tresoldi, M. Xompero, and F. Zerbi "Optical calibration and testing of the E-ELT M4 adaptive mirror", Proc. SPIE 8447, Adaptive Optics Systems III, 84473O (13 September 2012); https://doi.org/10.1117/12.926008

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available