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- W2010180247 abstract "XMM is a highly nested (58 individual shells) Wolter-I type X-ray telescope with a focal length of 7.5 m. The specified resolution (HEW) is 30 (goal 20) arcsec. In order to qualify single mirror shells and align and assemble the whole mirror module in a reasonable time it is inevitable to apply fast test and strongly converging alignment procedures. By means of two scanning laser beams intra- and extrafocal images of two mirror shells will be registered on a CCD-camera coupled to an image processing PC. One of the mirrors is already glued and serves as a reference while the second one has to be aligned yet. From the data axial and lateral focus positions as well as focus dimensions are calculated. A feed back loop then activates a set of actuators coupled to the mirror to be aligned. In an iterative way the alignment status of this mirror will be optimized. Finally, this mirror is cemented under optical control. First results from a basic test setup with only one mirror will be presented." @default.
- W2010180247 created "2016-06-24" @default.
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- W2010180247 date "1989-07-28" @default.
- W2010180247 modified "2023-09-23" @default.
- W2010180247 title "An Optical Test And Alignment Method For The XMM Mirror Module" @default.
- W2010180247 doi "https://doi.org/10.1117/12.962680" @default.
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