Development and operation of the microshutter array system - art. no. 69590C
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Author(s): Jhabvala, MD (Jhabvala, M. D.); Franz, D (Franz, D.); King, T (King, T.); Kletetschka, G (Kletetschka, G.); Kutyrev, AS (Kutyrev, A. S.); Li, MJ (Li, M. J.); Meyer, SE (Meyer, S. E.); Moseley, SH (Moseley, S. H.); Schwinger, S (Schwinger, S.); Silverberg, R (Silverberg, R.)
Editor(s): George T, Cheng Z
Source: MICRO (MEMS) AND NANOTECHNOLOGIES FOR SPACE, DEFENSE, AND SECURITY II    Book Series: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)    Volume: 6959    Pages: C9590-C9590    Published: 2008  
References: 7    View Related Records (from ISI Proceedings)
Conference Information: 2nd Conference on Micro (MEMS) and Nanotechnologies for Space, Defense, and Security
Orlando, FL, MAR 18-20, 2008
SPIE
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 similar to 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.
Document Type: Article
Language: English
Author Keywords: microshutters; microshutter arrays; micromirrors; MEMS; DMD; James Webb Space Telescope
Addresses: Jhabvala, MD (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
Publisher: SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
IDS Number: BHY70
ISSN: 0277-786X
ISBN: 978-0-8194-7150-5