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Proceedings Paper

The ring of fire: an internal illumination system for detector sensitivity and filter bandpass characterization
Author(s): Victor E. Scarpine; Stephen M. Kent; Susana E. Deustua; Michael J. Sholl; Stuart L. Mufson; Melanie N. Ott; Matthew P. Wiesner; Brian J. Baptista
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Paper Abstract

We describe a prototype of an illumination system, the Ring of Fire (ROF), which is used as part of an internal calibration system for large focal plane detector arrays in TMA (Three Mirror Anastigmat) telescope designs. Such designs have been proposed for the SNAP (SuperNova Acceleration Probe) version of a Joint Dark Energy Mission (JDEM). The ROF system illuminates the focal plane with a light beam the closely matches that of the telescope and is used for creating high spatial frequency flat fields and monitoring filter bandpasses for experiments that demand a highly accurate characterization of the detectors. We present measurements of a mockup of this prototype ROF design including studies in variations in illumination across a large focal plane.

Paper Details

Date Published: 11 August 2010
PDF: 8 pages
Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 77313E (11 August 2010); doi: 10.1117/12.857695
Show Author Affiliations
Victor E. Scarpine, Fermi National Accelerator Lab. (United States)
Stephen M. Kent, Fermi National Accelerator Lab. (United States)
Susana E. Deustua, Space Telescope Science Institute (United States)
Michael J. Sholl, Lawrence Berkeley National Lab. (United States)
Stuart L. Mufson, Indiana Univ. (United States)
Melanie N. Ott, NASA Goddard Space Flight Ctr. (United States)
Matthew P. Wiesner, Northern Illinois Univ. (United States)
Brian J. Baptista, Indiana Univ. (United States)

Published in SPIE Proceedings Vol. 7731:
Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann; Mark C. Clampin; Howard A. MacEwen, Editor(s)

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