AXAF VETA-I mirror x-ray test results cross-check with the HDOS metrology data

Ping Zhao; Leon P. Van Speybroeck

doi:10.1117/12.212604

20 June 1995 AXAF VETA-I mirror x-ray test results cross-check with the HDOS metrology data

Ping Zhao, Leon P. Van Speybroeck

Proceedings Volume 2515, X-Ray and Extreme Ultraviolet Optics; (1995) https://doi.org/10.1117/12.212604
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The AXAF VETA-I mirror x-ray test results have been cross checked with predictions based upon the HDOS metrology measurements and calculations of the effects of imperfect test system geometry and mirror mount induced distortions. The cross check was done by comparing the VETA-I x-ray test results with a VETA-I model, which is a computer simulation of the VETA-I mirror performance during the x-ray test. The HDOS (Hughes Danbury Optical Systems, Inc., Danbury, Conn.) metrology measurements (with CIDS, PMS, and WYKO) were performed after the VETA-I x-ray test in order to determine the surface figure errors of the mirror pair, including the overall surface map and the surface roughness. Mirror performance was predicted based on the measured surface figure errors and x-ray scattering theory. All the VETA-I x-ray test data (FWHM, encircled energy, effective area, wing scan, and ring focus) were cross checked with the HDOS metrology measurements. The results of this study show reasonably good agreement between the x-ray test data and the metrology data. Similar analysis should be performed for the HRMA mirrors, which is an important step in securing a scientifically successful AXAF mission.

Citation Download Citation

Ping Zhao and Leon P. Van Speybroeck "AXAF VETA-I mirror x-ray test results cross-check with the HDOS metrology data", Proc. SPIE 2515, X-Ray and Extreme Ultraviolet Optics, (20 June 1995); https://doi.org/10.1117/12.212604

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