Considerations about the differential piston for adaptive optics interferometry

Bruno Femenia; Marcel Carbillet; Simone Esposito; Armando Riccardi

doi:10.1117/12.390194

5 July 2000 Considerations about the differential piston for adaptive optics interferometry

Bruno Femenia, Marcel Carbillet, Simone Esposito, Armando Riccardi

Proceedings Volume 4006, Interferometry in Optical Astronomy; (2000) https://doi.org/10.1117/12.390194
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

This contribution extends a previous work where the concept of piston angular anisoplanatism was introduced and the issue of sky-coverage for large ground-based optical interferometers was raised. We obtain expressions for the temporal power spectra of phase fluctuations caused by differential piston and photon noise. This allows us to evaluate the residual phase variance left in a fringe tracking servo-loop system and obtain estimates for the sky- coverage due exclusively to differential piston effects, concluding that in V-band the percentage of sky that can be observed is a few percent while in K-band we should be able to cover the entire sky.

Citation Download Citation

Bruno Femenia, Marcel Carbillet, Simone Esposito, and Armando Riccardi "Considerations about the differential piston for adaptive optics interferometry", Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); https://doi.org/10.1117/12.390194

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