Optical calibration of capacitive sensors for AO: strategy and preliminary results

Runa Briguglio; Marco Xompero; Armando Riccardi; Roberto Biasi; Mario Andrighettoni

doi:10.1117/12.926820

13 September 2012 Optical calibration of capacitive sensors for AO: strategy and preliminary results

Runa Briguglio, Marco Xompero, Armando Riccardi, Roberto Biasi, Mario Andrighettoni

Proceedings Volume 8447, Adaptive Optics Systems III; 84474E (2012) https://doi.org/10.1117/12.926820
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

LBT contactless, voice-coil actuators working point ranges from 10 to 100 μm, with a typical position noise of a few nm. To fully take advantage of such large working range in AO operations, an absolute calibration of their capacitive sensor is requested. We implemented and tested an optical calibration technique that is based on a fast interferometer detection of a differential piston superimposed to a low order mirror mode. This procedure has been tested in dome environment at the Large Binocular Telescope.

Citation Download Citation

Runa Briguglio, Marco Xompero, Armando Riccardi, Roberto Biasi, and Mario Andrighettoni "Optical calibration of capacitive sensors for AO: strategy and preliminary results", Proc. SPIE 8447, Adaptive Optics Systems III, 84474E (13 September 2012); https://doi.org/10.1117/12.926820

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