J. Scott Smith (Optics Branch / Code 551, NASA Goddard Space Flight Center), Bruce H. Dean (Optics Branch / Code 551, NASA Goddard Space Flight Center), Alexander Rilee (Optics Branch / Code 551, NASA Goddard Space Flight Center), Thomas P. Zielinski (Optics Branch / Code 551, NASA Goddard Space Flight Center)
Keywords: JWST
Abstract:
The James Webb Space Telescope (JWST) is the successor to the Hubble Space Telescope and will be NASAs premier observatory of the next decade. Image-based wavefront sensing (phase retrieval) is the primary method for ground testing and on-orbit commissioning. For ground tests at NASAs Goddard Space Flight Center (GSFC) and Johnson Space Center (JSC), near-real-time analysis is critical for ensuring that pass/fail criteria are met before completion of a specific test. To address this need we have developed a computational architecture for image processing and phase retrieval. Using commercially available off-the-shelf hardware and software, we have designed, implemented, and tested a solution for high-speed parallel computing. The architecture is a hybrid solution utilizing both CPUs and GPUs and exploiting the unique advantages of each. Discussions are presented of the architecture, performance, and current limitations.
Date of Conference: September 13-16, 2011
Track: Poster