Incoming metrology of segmented x-ray mandrels at MSFC

Gubarev, Mikhail V.; O’Dell, Stephen L.; Kester, Thomas; Lehner, David L.; Jones, W. D.; Smithers, Martin E.; Content, David A.; Reid, Paul B.

doi:10.1117/12.551902

Cited by 4 publications

(2 citation statements)

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“…Use of a substrate with a higher annealing temperature and further-optimized PZT processing will result in test coupons with much smaller intrinsic surface errors. This will permit use of more precise metrology instrumentation, such as a normal-incidence interferometer or a long-trace profilometer 45 .…”

Section: Metrologymentioning

confidence: 99%

Toward active x-ray telescopes

O’Dell¹,

Gubarev²,

Kolodziejczak³

et al. 2011

SPIE Proceedings

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Future x-ray observatories will require high-resolution (< 1″) optics with very-large-aperture (> 25 m 2 ) areas. Even with the next generation of heavy-lift launch vehicles, launch-mass constraints and aperture-area requirements will limit the areal density of the grazing-incidence mirrors to about 1 kg/m 2 or less. Achieving sub-arcsecond x-ray imaging with such lightweight mirrors will require excellent mirror surfaces, precise and stable alignment, and exceptional stiffness or deformation compensation. Attaining and maintaining alignment and figure control will likely involve active (in-space adjustable) x-ray optics. In contrast with infrared and visible astronomy, active optics for x-ray astronomy is in its infancy. In the middle of the past decade, two efforts began to advance technologies for adaptive x-ray telescopes: The Smart X-ray Optics (SXO) Basic Technology project in the United Kingdom (UK) and the Generation-X (Gen-X) concept studies in the United States (US). This paper discusses relevant technological issues and summarizes progress toward active x-ray telescopes.

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Section: Metrologymentioning

confidence: 99%

Toward active x-ray telescopes

O’Dell¹,

Gubarev²,

Kolodziejczak³

et al. 2011

SPIE Proceedings

Self Cite

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show abstract

“…Large aperture steep concave parabolic mirrors are widely used in high technology areas, such as astronomical optics [1,2], space optics [3], spectrometry [4,5] and ICF [6]. To enhance the power capacity and the peak intensity of light, the deviation of such mirrors with respect to the best fit sphere must increase.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of a large aperture steep concave parabolic mirror using SASI based on auto-collimation theory

Liu

Tian

et al. 2014

Meas. Sci. Technol.

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To characterise a large aperture steep concave parabolic mirror, a new sub-aperture stitching interferometry measurement technology (SASI) based on auto-collimation is proposed. The principle of the stitching process is analysed, and the sub-aperture partitioning for a full aperture of a paraboloid is discussed. Next, the overlapped sampled points between sub-apertures are rectified through sampled points realigned in mesh grids. Finally, two experiments, the SASI based on auto-collimation and the full aperture test, were implemented for a parabolic mirror. The stitching result exhibits good agreement with the full-aperture result.

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Opto-mechanical analyses for performance optimization of lightweight grazing-incidence mirrors

Roche

Kolodziejczak

O’Dell³

et al. 2013

SPIE Proceedings

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New technology in grazing-incidence mirror fabrication and assembly is necessary to achieve sub-arcsecond optics for large-area x-ray telescopes. In order to define specifications, an understanding of performance sensitivity to design parameters is crucial. MSFC is undertaking a systematic study to specify a mounting approach, mirror substrate, and testing method. Because the lightweight mirrors are typically flimsy, they are susceptible to significant distortion due to mounting and gravitational forces. Material properties of the mirror substrate along with its thickness and dimensions significantly affect the distortions caused by mounting and gravity. A parametric study of these properties and their relationship to mounting and testing schemes will indicate specifications for the design of the next generation of lightweight grazing-incidence mirrors. Initial results will be reported.

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Incoming metrology of segmented x-ray mandrels at MSFC

Cited by 4 publications

References 0 publications

Toward active x-ray telescopes

Toward active x-ray telescopes

Characterisation of a large aperture steep concave parabolic mirror using SASI based on auto-collimation theory

Opto-mechanical analyses for performance optimization of lightweight grazing-incidence mirrors

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