Apodized square aperture plus occulter concept for TPF

Ian J. E. Jordan; Alfred B. Schultz; Richard G. Lyon; Helen M. Hart; Frederick Bruhweiler; Dorothy A. Fraquelli; Kenneth G. Carpenter; Mark Kochte; Jan M. Hollis

doi:10.1117/12.553029

12 October 2004 Apodized square aperture plus occulter concept for TPF

Ian J. E. Jordan, Alfred B. Schultz, Richard G. Lyon, Helen M. Hart, Frederick Bruhweiler, Dorothy A. Fraquelli, Kenneth G. Carpenter, Mark Kochte, Jan M. Hollis

Author Affiliations +

Proceedings Volume 5487, Optical, Infrared, and Millimeter Space Telescopes; (2004) https://doi.org/10.1117/12.553029
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

The standard approach to achieving TPF-level starlight suppression has been to couple a few techniques together. Deployment of a low- or medium-performance external occulter as the first stage of starlight suppression reduces manufacturing challenges, mitigates under-performance risks, lowers development costs, and hastens launch date for TPF. This paper describes the important aspects of a conceptual 4-metre apodized square aperture telescope system utilizing a low-performance external occulter. Adding an external occulter to such a standard TPF design provides a benefit that no other technique offers: scattered and diffracted on-axis starlight is suppressed by orders of magnitude before reaching the telescope. This translates directly into relaxed requirements on the remainder of the optical system.

Citation Download Citation

Ian J. E. Jordan, Alfred B. Schultz, Richard G. Lyon, Helen M. Hart, Frederick Bruhweiler, Dorothy A. Fraquelli, Kenneth G. Carpenter, Mark Kochte, and Jan M. Hollis "Apodized square aperture plus occulter concept for TPF", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); https://doi.org/10.1117/12.553029

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