WISE CRYOGENIC SUPPORT SYSTEM DESIGN OVERVIEW AND BUILD STATUS

The Wide-Field Infrared Survey Explorer (WISE) is a NASA MIDEX mission that is being developed by the Jet Propulsion Laboratory (JPL) to address several of NASA's Astronomical Search of Origins (ASO) objectives. The WISE instrument, developed by the Space Dynamics Laboratory (SDL), is a 40-cm cryogenically-cooled telescope operating at <17K, with four infrared focal planes, two of which operate at 7.8 K and two of which operate at 32 K. Cooling of the instrument is accomplished by a dual-stage solid hydrogen cryostat that is developed by the Lockheed Martin Advanced Technology Center (LMATC). The drivers for the cryogenic support system design are the 7-month lifetime, temperature requirements, and limiting heat loads into the open aperture.This paper provides an overview of the WISE cryogenic support system design and a status of the flight system build.