Optical measurements of the XSPECT mirrors and the assembled mirror modules for the SODART x-ray telescope on the Spectrum-X-Gamma satellite

Niels J. Westergaard; Josef Polny; Finn Erland Christensen; Hans Ulrich Noergaard-Nielsen; Herbert W. Schnopper

doi:10.1117/12.278877

11 July 1997 Optical measurements of the XSPECT mirrors and the assembled mirror modules for the SODART x-ray telescope on the Spectrum-X-Gamma satellite

Niels J. Westergaard, Josef Polny, Finn Erland Christensen, Hans Ulrich Noergaard-Nielsen, Herbert W. Schnopper

Author Affiliations +

Proceedings Volume 3113, Grazing Incidence and Multilayer X-Ray Optical Systems; (1997) https://doi.org/10.1117/12.278877
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

The Danish Space Research Institute is supplying high- throughput x-ray mirror modules (MM) for the SODART telescopes to be flown on the Russian Spectrum-X-Gamma mission. We have finished the process of building two flight units and one spare unit. We have measured 5500 flight quality single mirrors using laser scanning. Edge deformations have been found to be a persistent phenomenon giving rise to reduced effective area and alignment accuracy. The degree of foil straightness is a function of the radius of curvature. Detailed optical measurements of the MMs is a control of the mechanical alignment achieved by repeated adjustments between the stages of assembly. The results of these investigations are discussed and compared with x-ray calibration measurements. A combination of the optical results and x ray results is fed into a raytracing code resulting in a reliable prediction of the imaging capabilities of the SODART telescopes.

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Niels J. Westergaard, Josef Polny, Finn Erland Christensen, Hans Ulrich Noergaard-Nielsen, and Herbert W. Schnopper "Optical measurements of the XSPECT mirrors and the assembled mirror modules for the SODART x-ray telescope on the Spectrum-X-Gamma satellite", Proc. SPIE 3113, Grazing Incidence and Multilayer X-Ray Optical Systems, (11 July 1997); https://doi.org/10.1117/12.278877

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