21 January 1993 Image analysis of the AXAF VETA-1 X-ray mirror
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Abstract
Initial core scan data of the VETA-1 X-ray mirror proved disappointing, showing considerable unpredicted image structure and poor measured FWHM. 2-D core scans were performed, providing important insight into the nature of the distortion. Image deconvolutions using a raytraced model PSF was performed successfully to reinforce our conclusion regarding the origin of the astigmatism. A mechanical correction was made to the optical structure, and the minor was tested successfully (FWHM 0.22 arcsec) as a result.
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Mark D. Freeman, John P. Hughes, Leon P. Van Speybroeck, James W. Bilbro, Martin C. Weisskopf, "Image analysis of the AXAF VETA-1 X-ray mirror", Proc. SPIE 1742, Multilayer and Grazing Incidence X-Ray/EUV Optics for Astronomy and Projection Lithography, (21 January 1993); doi: 10.1117/12.140548; https://doi.org/10.1117/12.140548
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