University of Lethbridge

Published purpose

The next generation of far-infrared (FIR) space astronomy missions will employ detectors whose sensitivity is over two orders of magnitude higher than any previously flown. To exploit this exquisite sensitivity requires a fundamentally different type of instrument architecture. The main objectives of this project are to develop the world’s first cryogenic, far-infrared, post-dispersed, polarizing Fourier transform spectrometer (PDPFTS) and to investigate the challenges associated with this concept under realistic space conditions. Simply put, in order to achieve the potential 100-fold increase in sensitivity provided by state-of-the-art detectors requires the instrument be characterized to a correspondingly greater degree. Issues that did not have to be considered on previous missions will become important and perhaps even dominant. These issues must first be identified before they can be mitigated. The project builds on a lengthy heritage of Canadian participation in infrared space astronomy missions. It will lead to a greater understanding of the PDPFTS concept, which will serve to reduce future mission risk and cost. It will continue to train Highly Qualified Personnel in high-tech fields associated with space exploration missions.