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A Near IR Fabry-Perot Interferometer for Wide Field, Low Resolution Hyperspectral Imaging on the Next Generation Space TelescopeWe discuss work in progress on a near-infrared tunable bandpass filter for the Goddard baseline wide field camera concept of the Next Generation Space Telescope (NGST) Integrated Science Instrument Module (ISIM). This filter, the Demonstration Unit for Low Order Cryogenic Etalon (DULCE), is designed to demonstrate a high efficiency scanning Fabry-Perot etalon operating in interference orders 1 - 4 at 30K with a high stability DSP based servo control system. DULCE is currently the only available tunable filter for lower order cryogenic operation in the near infrared. In this application, scanning etalons will illuminate the focal plane arrays with a single order of interference to enable wide field lower resolution hyperspectral imaging over a wide range of redshifts. We discuss why tunable filters are an important instrument component in future space-based observatories.
Document ID
20000084158
Acquisition Source
Goddard Space Flight Center
Document Type
Other
Authors
Barry, R. K. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Satyapal, S. (Space Telescope Science Inst. Baltimore, MD United States)
Greenhouse, M. A. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Barclay, R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Amato, D. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Arritt, B. (Air Force Academy CO United States)
Brown, G. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Harvey, V. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Holt, C. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Kuhn, J. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2000
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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