New approaches to the design of non-redundant aperture masks

A. Carlotti; T. Groff

doi:10.1117/12.856710

4 August 2010 New approaches to the design of non-redundant aperture masks

A. Carlotti, T. Groff

Proceedings Volume 7733, Ground-based and Airborne Telescopes III; 77333D (2010) https://doi.org/10.1117/12.856710
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

The spatial frequencies accessible with a non-redundant mask (NRM) are fixed by the relative positions of the sub-apertures over the telescope pupil. In this paper we present several iterative algorithms for constructing nonredundant sub-apertures configurations. We use the triple correlation of a pre-existing set of n sub-apertures in order to find if, and where, a supplementary n+1th sub-aperture can be placed. As several possible locations may be found, we propose 3 different criteria to choose among them. Favoring the positions that are the closest to the center of mass of the sub-apertures ends up finding configurations similar to those described by Golay. The 2 other criteria aim at favoring higher spatial frequencies. The possibility of working with pupils of different radii in order to obtain a better coverage is briefly explored. The comparison between the configurations found with the 3 algorithms is done by computing for each of them the radial density of the spatial frequencys coverage and the total flux collected by the sub-apertures. An algebraic expression of the diffraction patterns associated to these configurations is given.

Citation Download Citation

A. Carlotti and T. Groff "New approaches to the design of non-redundant aperture masks", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77333D (4 August 2010); https://doi.org/10.1117/12.856710

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