Interferometry is an affordable way to bring the benefits of high resolution to space far-IR astrophysics. We summarize
an ongoing effort to develop and learn the practical limitations of an interferometric technique that will enable the
acquisition of high-resolution far-IR integral field spectroscopic data with a single instrument in a future space-based
interferometer. This technique was central to the Space Infrared Interferometric Telescope (SPIRIT) and Submillimeter
Probe of the Evolution of Cosmic Structure (SPECS) space mission design concepts, and it will first be used on the
Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII). Our experimental approach combines data
from a laboratory optical interferometer (the Wide-field Imaging Interferometry Testbed, WIIT), computational optical
system modeling, and spatio-spectral synthesis algorithm development. We summarize recent experimental results and
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David Leisawitz ; Matthew R. Bolcar ; Richard G. Lyon ; Stephen F. Maher ; Nargess Memarsadeghi, et al.
Developing wide-field spatio-spectral interferometry for far-infrared space applications
", Proc. SPIE 8445, Optical and Infrared Interferometry III, 84450A (September 12, 2012); doi:10.1117/12.926812; http://dx.doi.org/10.1117/12.926812