Modal phase correction for large-aperture ground-based telescope with multiguide stars

Lidia A. Bolbasova; Vladimir P. Lukin

doi:10.1117/12.831132

1 October 2009 Modal phase correction for large-aperture ground-based telescope with multiguide stars

Proceedings Volume 7476, Optics in Atmospheric Propagation and Adaptive Systems XII; 74760M (2009) https://doi.org/10.1117/12.831132
Event: SPIE Remote Sensing, 2009, Berlin, Germany

Abstract

Simple analytical expressions for parameter Strehl of ground-based astronomical telescope: (i) without adaptive correction, (ii) phase correction with use single laser guide star, (iii) phase correction with use multi-guide stars (square matrix system of guide stars with variable number of elements) are obtained. Models of the vertical dependence of the structure parameter of refractive index of the turbulent atmosphere for various sites are used in the calculations. Modal phase correction is considered to large aperture ground-based telescope with multi-guide stars. Wave aberrations presented in the in terms of Zernike polynomials are used to calculate the angular correlation of modal components of phase fluctuations of optical radiation propagating in the turbulent atmosphere. The size of the isoplanatic area in an adaptive optical system is studied. The influence of the model of vertical profile of the structure parameter of atmospheric refractive index fluctuations, the outer scale of atmospheric turbulence, and the size of receiving aperture of a telescopic system are analyzed. Requirements on bandwidth of adaptive optical system for effective correction are formulated.

Citation Download Citation

Lidia A. Bolbasova and Vladimir P. Lukin "Modal phase correction for large-aperture ground-based telescope with multiguide stars", Proc. SPIE 7476, Optics in Atmospheric Propagation and Adaptive Systems XII, 74760M (1 October 2009); https://doi.org/10.1117/12.831132

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