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Proceedings Paper

Development of a prototype nickel optic for the Constellation-X hard x-ray telescope: IV
Author(s): S. Romaine; S. Basso; R. J. Bruni; W. Burkert; O. Citterio; G. Conti; D. Engelhaupt; M. J. Freyberg; M. Ghigo; P. Gorenstein; M. Gubarev; G. Hartner; F. Mazzoleni; S. O'Dell; G. Pareschi; B. D. Ramsey; C. Speegle; D. Spiga
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Paper Abstract

The Constellation-X mission planned for launch in 2015-2020 timeframe, will feature an array of Hard X-ray telescopes (HXT) with a total collecting area greater than 1500 cm2 at 40 keV. Two technologies are being investigated for the optics of these telescopes, one of which is multilayer-coated Electroformed-Nickel-Replicated (ENR) shells. The attraction of the ENR process is that the resulting full-shell optics are inherently stable and offer the prospect of better angular resolution which results in lower background and higher instrument sensitivity. We are building a prototype HXT mirror module using an ENR process to fabricate the individual shells. This prototype consists of 5 shells with diameters ranging from 15 cm to 28 cm with a length of 42.6 cm. The innermost of these will be coated with iridium, while the remainder will be coated with graded d-spaced W/Si multilayers. The assembly structure has been completed and last year we reported on full beam illumination results from the first test shell mounted in this structure. We have now fabricated and coated two (15 cm and 23 cm diameter) 100 micron thick shells which have been aligned and mounted. This paper presents the results of full beam illumination X-ray tests, taken at MPE-Panter. The HEW of the individual shells will be discussed, in addition to results from the full two shell optic test.

Paper Details

Date Published: 13 June 2006
PDF: 7 pages
Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 62661C (13 June 2006); doi: 10.1117/12.672052
Show Author Affiliations
S. Romaine, Harvard-Smithsonian Ctr. for Astrophysics (United States)
S. Basso, Istituto Nazionale di AstroFisica, Osservatorio Astronomico di Brera (Italy)
R. J. Bruni, Harvard-Smithsonian Ctr. for Astrophysics (United States)
W. Burkert, Max-Planck-Institut für extraterrestrische Physik (Germany)
O. Citterio, Istituto Nazionale di AstroFisica, Osservatorio Astronomico di Brera (Italy)
G. Conti, IASF-Sez. (Italy)
D. Engelhaupt, Ctr. for Applied Optics, Univ. of Alabama in Huntsville (United States)
M. J. Freyberg, Max-Planck-Institut für extraterrestrische Physik (Germany)
M. Ghigo, Istituto Nazionale di AstroFisica, Osservatorio Astronomico di Brera (Italy)
P. Gorenstein, Harvard-Smithsonian Ctr. for Astrophysics (United States)
M. Gubarev, Universities Space Research Association (United States)
G. Hartner, Max-Planck-Institut für extraterrestrische Physik (Germany)
F. Mazzoleni, Istituto Nazionale di AstroFisica, Osservatorio Astronomico di Brera (Italy)
S. O'Dell, NASA Marshall Space Flight Ctr. (United States)
G. Pareschi, Istituto Nazionale di AstroFisica, Osservatorio Astronomico di Brera (Italy)
B. D. Ramsey, NASA Marshall Space Flight Ctr. (United States)
C. Speegle, Raytheon, ITSS (United States)
D. Spiga, Istituto Nazionale di AstroFisica, Osservatorio Astronomico di Brera (Italy)


Published in SPIE Proceedings Vol. 6266:
Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
Martin J. L. Turner; Günther Hasinger, Editor(s)

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