The ring of fire: an internal illumination system for detector sensitivity and filter bandpass characterization

Victor E. Scarpine; Stephen M. Kent; Susana E. Deustua; Michael J. Sholl; Stuart L. Mufson; Melanie N. Ott; Matthew P. Wiesner; Brian J. Baptista

doi:10.1117/12.857695

10 August 2010 The ring of fire: an internal illumination system for detector sensitivity and filter bandpass characterization

Victor E. Scarpine, Stephen M. Kent, Susana E. Deustua, Michael J. Sholl, Stuart L. Mufson, Melanie N. Ott, Matthew P. Wiesner, Brian J. Baptista

Author Affiliations +

Proceedings Volume 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave; 77313E (2010) https://doi.org/10.1117/12.857695
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

Citation Download Citation

Victor E. Scarpine, Stephen M. Kent, Susana E. Deustua, Michael J. Sholl, Stuart L. Mufson, Melanie N. Ott, Matthew P. Wiesner, and Brian J. Baptista "The ring of fire: an internal illumination system for detector sensitivity and filter bandpass characterization", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 77313E (10 August 2010); https://doi.org/10.1117/12.857695

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