Demonstration of the wide-field imaging interferometer testbed using a calibrated hyperspectral image projector

Matthew R. Bolcar; David Leisawitz; Stephen Maher; Stephen Rinehart

doi:10.1117/12.926221

12 September 2012 Demonstration of the wide-field imaging interferometer testbed using a calibrated hyperspectral image projector

Matthew R. Bolcar, David Leisawitz, Stephen Maher, Stephen Rinehart

Author Affiliations +

Proceedings Volume 8445, Optical and Infrared Interferometry III; 84452D (2012) https://doi.org/10.1117/12.926221
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The Wide-field Imaging Interferometer testbed (WIIT) at NASA’s Goddard Space Flight Center uses a dual-Michelson interferometric technique. The WIIT combines stellar interferometry with Fourier-transform interferometry to produce high-resolution spatial-spectral data over a large field-of-view. This combined technique could be employed on future NASA missions such as the Space Infrared Interferometric Telescope (SPIRIT) and the Sub-millimeter Probe of the Evolution of Cosmic Structure (SPECS). While both SPIRIT and SPECS would operate at far-infrared wavelengths, the WIIT demonstrates the dual-interferometry technique at visible wavelengths. The WIIT will produce hyperspectral image data, so a true hyperspectral object is necessary. A calibrated hyperspectral image projector (CHIP) has been constructed to provide such an object. The CHIP uses Digital Light Processing (DLP) technology to produce customized, spectrally-diverse scenes. CHIP scenes will have approximately 1.6-micron spatial resolution and the capability of producing arbitrary spectra in the band between 380 nm and 1.6 microns, with approximately 5-nm spectral resolution. Each pixel in the scene can take on a unique spectrum. Spectral calibration is achieved with an onboard fiber-coupled spectrometer. In this paper we describe the operation of the CHIP. Results from the WIIT observations of CHIP scenes will also be presented.

Citation Download Citation

Matthew R. Bolcar, David Leisawitz, Stephen Maher, and Stephen Rinehart "Demonstration of the wide-field imaging interferometer testbed using a calibrated hyperspectral image projector", Proc. SPIE 8445, Optical and Infrared Interferometry III, 84452D (12 September 2012); https://doi.org/10.1117/12.926221

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available