29 January 2004 The development of hard x-ray optics at MSFC
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Abstract
We have developed the electroformed-nickel replication process to enable us to fabricate light-weight, high-quality mirrors for the hard-x-ray region. Two projects currently utilizing this technology are the production of 240 mirror shells, of diameters ranging from 50 to 94 mm, for our HERO balloon payload, and 150- and 230-mm-diameter shells for a prototype Constellation-X hard-x-ray telescope module. The challenge for the former is to fabricate, mount, align and fly a large number of high-resolution mirrors within the constraints of a modest budget. For the latter, the challenge is to maintain high angular resolution despite weight-budget-driven mirror shell thicknesses (100 μm) which make the shells extremely sensitive to fabrication and handling stresses, and to ensure that the replication process does not degrade the ultra-smooth surface finish (~3Å) required for eventual multilayer coatings. We present a progress report on these two programs.
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Brian D. Ramsey, Brian D. Ramsey, Ron F. Elsner, Ron F. Elsner, Darell Engelhaupt, Darell Engelhaupt, Mikhail V. Gubarev, Mikhail V. Gubarev, Jeffery J. Kolodziejczak, Jeffery J. Kolodziejczak, Stephen L. O'Dell, Stephen L. O'Dell, Chet O. Speegle, Chet O. Speegle, Martin C. Weisskopf, Martin C. Weisskopf, } "The development of hard x-ray optics at MSFC", Proc. SPIE 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy, (29 January 2004); doi: 10.1117/12.509619; https://doi.org/10.1117/12.509619
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