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1 February 1991 Imaging performance and tests of soft x-ray telescopes
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Photos obtained during 5 mm. of observation time from the flight of our 10 inch normal incidence soft x-ray (1 = 63.5A) telescope on September 11, 1989 are analyzed and the data are compared to the results expected from tests of the mirror surfaces. These tests cover a range of spatial periods from 25 cm to lÅ. The photos demonstrate a reduction in the scattering of the multilayer mirror compared to a single surface for scattering angles above 1 arcmin, corresponding to surface irregularities with spatial periods below 10 tim. Our results are used to predict the possible performance of future flights. Sounding rocket observations might be able to reach a resolution around 0. 1 arcsec. Higher resolutions will require flights of longer durations and improvements in mirror testing for the largest spatial penods.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eberhard Adolf Spiller, R. McCorkle, Janusz S. Wilczynski, Leon Golub, George U. Nystrom, Peter Z. Takacs, and Charles W. Welch "Imaging performance and tests of soft x-ray telescopes", Proc. SPIE 1343, X-Ray/EUV Optics for Astronomy, Microscopy, Polarimetry, and Projection Lithography, (1 February 1991);

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