Calibration of CONICA static aberrations by phase diversity

Markus Hartung; Amandine Blanc; Thierry Fusco; Francois Lacombe; Laurent M. Mugnier; Gerard Rousset; Rainer Lenzen

doi:10.1117/12.460019

7 March 2003 Calibration of CONICA static aberrations by phase diversity

Markus Hartung, Amandine Blanc, Thierry Fusco, Francois Lacombe, Laurent M. Mugnier, Gerard Rousset, Rainer Lenzen

Proceedings Volume 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes; (2003) https://doi.org/10.1117/12.460019
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

CONICA is the first AO equipped multimode near infrared camera which saw first light at the VLT in the end of 2001. A technique will be described to benefit of the AO system NAOS to correct not only for atmospheric turbulence but also for the internal optical aberrations of the high resolution camera. The aberrant optical components in the light path of CONICA are outside of the AO loop and therefore no self-acting correction is possible. Independently of the AO wave front sensor, a separate measurement of these minor aberrations using a method called phase diversity allows to predict for the variety of camera configurations the corresponding aberrations. They are quantified by sets of Zernike coefficients which are rendered to the adaptive optics. This technique turns out to be very flexible and results into a further improvement of the optical overall performance.

Citation Download Citation

Markus Hartung, Amandine Blanc, Thierry Fusco, Francois Lacombe, Laurent M. Mugnier, Gerard Rousset, and Rainer Lenzen "Calibration of CONICA static aberrations by phase diversity", Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); https://doi.org/10.1117/12.460019

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