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Proceedings Paper

First results from the ground calibration of the NuSTAR flight optics
Author(s): Jason E. Koglin; HongJun An; Nicolas Barrière; Nicolai F. Brejnholt; Finn E. Christensen; William W. Craig; Charles J. Hailey; Anders Clemen Jakobsen; Kristin K. Madsen; Kaya Mori; Melania Nynka; Monica Fernandez-Perea; Michael J. Pivovaroff; Andrew Ptak; Clio Sleator; Doug Thornhill; Julia K. Vogel; Daniel R. Wik; William W. Zhang
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Paper Abstract

NuSTAR is a hard X-ray satellite experiment to be launched in 2012. Two optics with 10.15 m focal length focus Xrays with energies between 5 and 80 keV onto CdZnTe detectors located at the end of a deployable mast. The FM1 and FM2 flight optics were built at the same time based on the same design and with very similar components, and thus the performance of both is expected to be very similar. We provide an overview of calibration data that is being used to build an optics response model for each optic and describe initial results for energies above 10 keV from the ground calibration of the flight optics. From a preliminary analysis of the data, our current best determination of the overall HPD of both the FM1 and FM2 flight optics is 52", and nearly independent of energy. The statistical error is negligible, and a preliminary estimate of the systematic error is of order 4". The as-measured effective area and HPD meet the toplevel NuSTAR mission sensitivity requirements.

Paper Details

Date Published: 7 October 2011
PDF: 16 pages
Proc. SPIE 8147, Optics for EUV, X-Ray, and Gamma-Ray Astronomy V, 81470J (7 October 2011); doi: 10.1117/12.895279
Show Author Affiliations
Jason E. Koglin, Columbia Univ. (United States)
HongJun An, Columbia Univ. (United States)
Nicolas Barrière, Univ. of California, Berkeley (United States)
Nicolai F. Brejnholt, DTU Space, Technical Univ. of Denmark (Denmark)
Finn E. Christensen, DTU Space, Technical Univ. of Denmark (Denmark)
William W. Craig, Univ. of California, Berkeley (United States)
Charles J. Hailey, Columbia Univ. (United States)
Anders Clemen Jakobsen, DTU Space, Technical Univ. of Denmark (Denmark)
Kristin K. Madsen, California Institute of Technology (United States)
Kaya Mori, Columbia Univ. (United States)
Melania Nynka, Columbia Univ. (United States)
Monica Fernandez-Perea, Lawrence Livermore National Lab. (United States)
Michael J. Pivovaroff, Lawrence Livermore National Lab. (United States)
Andrew Ptak, NASA Goddard Space Flight Ctr. (United States)
Clio Sleator, Columbia Univ. (United States)
Doug Thornhill, Columbia Univ. (United States)
Julia K. Vogel, Lawrence Livermore National Lab. (United States)
Daniel R. Wik, NASA Goddard Space Flight Ctr. (United States)
William W. Zhang, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 8147:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy V
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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