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Toward Large-Area Sub-Arcsecond X-Ray Telescopes II
- Source :
- Proceedings of SPIE. 9965
- Publication Year :
- 2016
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 2016.
-
Abstract
- In order to advance significantly scientific objectives, future x-ray astronomy missions will likely call for x-ray telescopes with large aperture areas (approx. = 3 sq m) and fine angular resolution (approx. = 1"). Achieving such performance is programmatically and technologically challenging due to the mass and envelope constraints of space-borne telescopes and to the need for densely nested grazing-incidence optics. Such an x-ray telescope will require precision fabrication, alignment, mounting, and assembly of large areas (approx. = 600 sq m) of lightweight (approx. = 2 kg/sq m areal density) high-quality mirrors, at an acceptable cost (approx. = 1 M$/sq m of mirror surface area). This paper reviews relevant programmatic and technological issues, as well as possible approaches for addressing these issues-including direct fabrication of monocrystalline silicon mirrors, active (in-space adjustable) figure correction of replicated mirrors, static post-fabrication correction using ion implantation, differential erosion or deposition, and coating-stress manipulation of thin substrates.
Details
- Language :
- English
- Volume :
- 9965
- Database :
- NASA Technical Reports
- Journal :
- Proceedings of SPIE
- Notes :
- NNG06EO90A, , NNG12CR31C, , WBS 244904, , NNM13AA03A
- Publication Type :
- Report
- Accession number :
- edsnas.20160014505
- Document Type :
- Report
- Full Text :
- https://doi.org/10.1117/12.2238247