Starting in October 1987 the eight flight mirror shells of the ROSAT high-resolution X-ray mirror system have been assembled to a Wolter I telescope. A description of the assembly procedure and the alignment control measurement methods is given as well as a summary of the performance.
II. Configuration and design
III. Mirror manufacture
IV. Assembly and adjustment
V. Summary Acknowledgments
"Assembly Of The ROSAT Flight X-Ray Mirror System", Proc. SPIE 0982, X-Ray Instrumentation in Astronomy II, (21 December 1988); doi: 10.1117/12.948696; https://doi.org/10.1117/12.948696