Physics – Optics
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...190.2908g&link_type=abstract
American Astronomical Society, 190th AAS Meeting, #29.08; Bulletin of the American Astronomical Society, Vol. 29, p.816
Physics
Optics
Scientific paper
We discuss the X-ray measurement of the focus and alignment of the AXAF (Advanced X-ray Astrophysics Facility) X-ray optics. The High Resolution Mirror Assembly (HRMA) consists of four nested Wolter type I X-ray optics. The attainment of the program goals for high resolution imaging requires that the mirror foci be coincident, both axially and laterally; in addition, the relative tilts between optics within each mirror pair must be small. The mirror tilts and the parfocalization were measured at the X-Ray Calibration Facility (XRCF) at the Marshall Space Flight Center in Huntsville, Alabama during a series of tests in the winter/spring of 1996/1997. The X-ray measurements are compared to the optical alignment data obtained by Eastman Kodak using the HRMA Alignment and Test System (HATS) during HRMA assembly. From these data a model for the relative location and rigid-body orientation of the individual mirror elements is developed; this mirror model is a component of the SAO high fidelity HRMA raytrace model. We also report on the implications for AXAF on-orbit point spread function.
Atkinson Charles
Cohen Marvin L.
Edgar Richard J.
Freeman Mark D.
Gaetz Terrance J.
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