28 July 1989 Precision Optical Fabrication And Test Methods Applied To The SXT Grazing Incidence Mirror Assembly
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Abstract
Unique mechanical and optical design features of this solar x-ray telescope were required to survive launch, and to achieve excellent imagery over a large field of view. These design features placed exceptional demands on all of the manufacturing and measurement processes. Survivability dictated use of a monolithic mirror assembly with both optical surfaces generated and polished on the same substrate. Good performance dictated a maximum axial separation of 5 mm between these surfaces (H-1 and H-2), placing difficult restrictions on the generation, polishing, and smoothing operations. The wide field requirements of a solar imager placed unprecedented tolerances on measurement and control of H-1 to H-2 alignment, delta-delta Radius, and absolute axial sag, because of the short axial dimension. An additional portion of the error budget for delta-delta Radius had to be given to large on-orbit thermal variations, tightening this specification even further.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. G. Hull-Allen, C. G. Hull-Allen, R. Maeda, R. Maeda, C. F. Comstock, C. F. Comstock, C. M. Kennemore, C. M. Kennemore, K. E. Tapp, K. E. Tapp, A. F. Slomba, A. F. Slomba, R. G. Kusha, R. G. Kusha, "Precision Optical Fabrication And Test Methods Applied To The SXT Grazing Incidence Mirror Assembly", Proc. SPIE 1160, X-Ray/EUV Optics for Astronomy and Microscopy, (28 July 1989); doi: 10.1117/12.962671; https://doi.org/10.1117/12.962671
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