Towards the end of 1985, the last finishing touch was made to the flight mirrors for the German ROSAT X-Ray Satellite. On the basis of the results available, the procedures actually applied and those considered at the various production stages are assessed. A. comparison is made between these procedures and those used for the HEA0-B mirror system in order to illustrate the advantages and disadvantages between them. Key features are: support of the mirror during grinding, polishing and measuring, diamond-wheel grinding of the mirrors, surface finish and slope, error correction.
"Aspects Of Manufacturing Grazing Incidence X-Ray Mirrors", Proc. SPIE 0645, Optical Manufacturing, Testing and Aspheric Optics, (3 November 1986); doi: 10.1117/12.964487; https://doi.org/10.1117/12.964487