12 October 2004 Apodized square aperture plus occulter concept for TPF
Author Affiliations +
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.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ian J. E. Jordan, Ian J. E. Jordan, Alfred B. Schultz, Alfred B. Schultz, Richard G. Lyon, Richard G. Lyon, Helen M. Hart, Helen M. Hart, Frederick Bruhweiler, Frederick Bruhweiler, Dorothy A. Fraquelli, Dorothy A. Fraquelli, Kenneth G. Carpenter, Kenneth G. Carpenter, Mark Kochte, Mark Kochte, Jan M. Hollis, Jan M. Hollis, } "Apodized square aperture plus occulter concept for TPF", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.553029; https://doi.org/10.1117/12.553029

Back to Top