Hostname: page-component-76fb5796d-9pm4c Total loading time: 0 Render date: 2024-04-25T14:25:16.523Z Has data issue: false hasContentIssue false
  • English
  • Français

Cascading properties of Prolate Apodized Lyot Coronagraphs

Published online by Cambridge University Press:  11 October 2004

C. Aime ,
R. Soummer ,
C. Aime  and
R. Soummer
C. Aime
Affiliation:
UMR 6525 Laboratoire Universitaire d'Astrophysique de Nice, University of Nice Sophia-Antipolis, 06108 Nice Cedex 2, France
R. Soummer
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore MD21218, USA
Get access

Abstract

We describe in this short note the interest of a multiple-stage prolate apodized Lyot coronagraph (PALC). The principle was proposed by Aime, Soummer and Ferrari (A&A 2002, 389,334-344). Several PALCs are used in a cascading mode. The first stage is a PALC with all its elements. The other stages use only Lyot masks and Lyot stops, without any further aperture apodization. If the extinction factor of the first PALC is Q, then the resulting extinction factor of N such cascading coronagraphs is QN. The total throughput remains that of the first PALC, for perfect optics.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 12: Astronomy with High Contrast Imaging II , 2004 , pp. 281 - 286
Copyright
© EAS, EDP Sciences, 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)