Segmented x-ray mirror development for Constellation-X

被引：13
|
作者：
Petre, R [1 ]
Chen, C [1 ]
Cohen, L [1 ]
Content, D [1 ]
Harms, RJ [1 ]
Mongrard, O [1 ]
Monnelly, G [1 ]
Saha, T [1 ]
Schattenburg, M [1 ]
Serlemitsos, P [1 ]
Zhang, W [1 ]
机构：
[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
来源：
X-RAY OPTICS, INSTRUMENTS, AND MISSIONS II | 1999年 / 3766卷
关键词：
x-ray optics; Constellation-X;
D O I：
10.1117/12.363639
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Segmented mirrors are one of the two approaches being investigated for both the Spectroscopy X-Ray Telescope (SXT) and the Hard X-Ray Telescope (HXT) on Constellation-X. Mirrors based on the grazing incidence foil optics pioneered by GSFC will meet the stringent Constellation-X SXT weight requirement, but the currently achieved resolution falls short of the 15" half-power diameter (HPD) required for Constellation-X. Significant contributions to the blur arise from the figure of individual reflectors and from inaccurate mounting. Only a small contribution to the HPD of the existing mirrors arises from the conical approximation. In this paper, we describe our program for improving the spatial resolution of segmented mirrors to meet the Constellation-X requirement. Our effort incorporates accurately figured replication mandrels, mechanically more robust reflector substrates, high accuracy alignment, and ultimately a transition from conical to curved reflecting surfaces.
引用
收藏
页码：11 / 21
页数：11
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