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Proceedings Paper

Development and operation of the microshutter array system
Author(s): M. D. Jhabvala; D. Franz; T. King; G. Kletetschka; A. S. Kutyrev; M. J. Li; S. E. Meyer; S. H. Moseley; S. Schwinger; R. Silverberg
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Paper Abstract

The microshutter array (MSA) is a key component in the James Webb Space Telescope Near Infrared Spectrometer (NIRSpec) instrument. The James Webb Space Telescope is the next generation of a space-borne astronomy platform that is scheduled to be launched in 2013. However, in order to effectively operate the array and meet the severe operational requirements associated with a space flight mission has placed enormous constraints on the microshutter array subsystem. This paper will present an overview and description of the entire microshutter subsystem including the microshutter array, the hybridized array assembly, the integrated CMOS electronics, mechanical mounting module and the test methodology and performance of the fully assembled microshutter subsystem. The NIRSpec is a European Space Agency (ESA) instrument requiring four fully assembled microshutter arrays, or quads, which are independently addressed to allow for the imaging of selected celestial objects onto the two 4 mega pixel IR detectors. Each microshutter array must have no more than ~8 shutters which are failed in the open mode (depending on how many are failed closed) out of the 62,415 (365x171) total number of shutters per array. The driving science requirement is to be able to select up to 100 objects at a time to be spectrally imaged at the focal plane. The spectrum is dispersed in the direction of the 171 shutters so if there is an unwanted open shutter in that row the light from an object passing through that failed open shutter will corrupt the spectrum from the intended object.

Paper Details

Date Published: 30 April 2008
PDF: 17 pages
Proc. SPIE 6959, Micro (MEMS) and Nanotechnologies for Space, Defense, and Security II, 69590C (30 April 2008); doi: 10.1117/12.775768
Show Author Affiliations
M. D. Jhabvala, NASA Goddard Space Flight Ctr. (United States)
D. Franz, NASA Goddard Space Flight Ctr. (United States)
T. King, NASA Goddard Space Flight Ctr. (United States)
G. Kletetschka, Catholic Univ. of America (United States)
A. S. Kutyrev, Univ. of Maryland, College Park (United States)
M. J. Li, NASA Goddard Space Flight Ctr. (United States)
S. E. Meyer, NASA Goddard Space Flight Ctr. (United States)
S. H. Moseley, NASA Goddard Space Flight Ctr. (United States)
S. Schwinger, NASA Goddard Space Flight Ctr. (United States)
R. Silverberg, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 6959:
Micro (MEMS) and Nanotechnologies for Space, Defense, and Security II
Thomas George; Zhongyang Cheng, Editor(s)

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