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| Wide-field Infrared Survey Explorer (WISE) instrument suite | |
|---|---|
| Name | Wide-field Infrared Survey Explorer (WISE) instrument suite |
| Mission | Wide-field Infrared Survey Explorer |
| Operator | NASA |
| Manufacturer | Ball Aerospace; University of California, Los Angeles; Jet Propulsion Laboratory |
| Launch | NASA 2010 launch |
| Type | Infrared space telescope instrument suite |
| Wavelength | 3.4–22 μm (four bands) |
| Detectors | HgCdTe; Si:As |
| Status | Operational (post-reactivation as NEOWISE) |
Wide-field Infrared Survey Explorer (WISE) instrument suite The Wide-field Infrared Survey Explorer (WISE) instrument suite is the integrated set of optical, cryogenic, detector, and processing systems flown on the Wide-field Infrared Survey Explorer mission, developed to perform an all-sky survey in the mid-infrared. The suite enabled broad surveys that impacted research by teams associated with NASA, Jet Propulsion Laboratory, University of California, Los Angeles, Caltech, Harvard University, and international partners such as JAXA collaborators. WISE delivered catalogs and image products used by communities working with datasets from facilities including Hubble Space Telescope, Spitzer Space Telescope, Chandra X-ray Observatory, Keck Observatory, and Very Large Telescope.
The instrument suite was conceived within the context of NASA Discovery-class and Explorer-class programs, designed to complement missions like IRAS, AKARI, Spitzer Space Telescope, and surveys such as Sloan Digital Sky Survey, Two Micron All Sky Survey, and Pan-STARRS. Principal investigators and institutions drawing on programmatic support from NASA Headquarters, Jet Propulsion Laboratory, and university groups positioned WISE to serve astronomy communities including teams at Harvard-Smithsonian Center for Astrophysics, Max Planck Institute for Astronomy, European Space Agency, and national observatories such as NOAO and Arecibo Observatory-affiliated researchers. The instrument suite’s objectives aligned with strategic priorities articulated in community roadmaps like the Decadal Survey.
The WISE instrument suite integrated a cryogenic telescope, a four-band filter wheel and focal plane, a cryostat, optics including a three-mirror anastigmat, and on-board electronics for readout and data handling. Design and fabrication involved contractors and research groups including Ball Aerospace, teams from University of California, Los Angeles instrumentation labs, and detector work supported by NASA Goddard Space Flight Center. The cryostat design paralleled techniques used on Spitzer Space Telescope and borrowed heritage from instruments on Infrared Astronomical Satellite. Opto-mechanical design met constraints set by launch vehicles and mission design teams at United Launch Alliance-related programs and launch coordination with Vandenberg Air Force Base operations.
The focal plane assembly combined mercury cadmium telluride (HgCdTe) arrays and silicon arsenide (Si:As) impurity band conduction detectors to cover four bands centered near 3.4, 4.6, 12, and 22 micrometres. Detector development drew on the detector heritage of teams associated with Jet Propulsion Laboratory, Ames Research Center, and industrial partners tied to Rockwell International-era technologies. Focal plane readouts were compatible with cryogenic electronics techniques used on COBE and IRAS and incorporated microelectronics influenced by developments at Bell Labs and MIT Lincoln Laboratory. The assembly included cold shutters, filter stacks, and thermal interfaces to the cryostat and to the spacecraft bus provided by contractors known for work on missions like Landsat and Terra.
On-orbit radiometric and astrometric calibration plans referenced standards maintained by facilities such as National Institute of Standards and Technology and stellar catalogs including Hipparcos and Tycho. Performance validation compared WISE outputs against contemporaneous datasets from Spitzer Space Telescope and ground-based photometry from Mauna Kea Observatories and Palomar Observatory. Absolute sensitivity, point-spread function characterization, and detector linearity were monitored using observations of calibration stars, solar system targets like Jupiter and Mars, and deep fields coordinated with projects such as GOODS, COSMOS, and Hubble Ultra Deep Field. The instrument achieved noise-equivalent flux densities that enabled detection of faint brown dwarfs and distant luminous infrared galaxies, with photometric and astrometric precision tracked through mission operations at Jet Propulsion Laboratory.
Data processing for the WISE instrument suite used pipelines developed by teams at IPAC, Caltech, and Jet Propulsion Laboratory, incorporating algorithms for image coaddition, artifact mitigation, source extraction, and photometric calibration. Catalog generation paralleled processes used in 2MASS and SDSS pipelines and interfaced with archives like the NASA/IPAC Infrared Science Archive and Infrared Processing and Analysis Center. The pipeline produced source catalogs, image mosaics, and data-quality flags used by researchers at Harvard, Max Planck Institute for Astronomy, University of Arizona, and survey projects such as LSST preparatory studies. Secondary analyses combined WISE products with data from WISE All-Sky Data Release-era resources for cross-matching with Gaia and radio surveys from VLA.
Science goals emphasized discovery and characterization of near-Earth objects, brown dwarfs, star-forming regions, luminous infrared galaxies, and obscured active galactic nuclei, aligning with interests of investigators at NASA Ames Research Center, Caltech, Harvard-Smithsonian Center for Astrophysics, and international consortia. Key discoveries attributable to WISE instrument data included identification of the coolest brown dwarfs, census contributions to the near-Earth asteroid population relevant to Planetary Defense Coordination Office stakeholders, uncovering populations of dust-obscured quasars relevant to teams at European Southern Observatory and Keck Observatory, and mapping of infrared cirrus informing studies at Max Planck Institute for Astrophysics. Cross-disciplinary impacts reached researchers using ALMA, Chandra X-ray Observatory, and Fermi Gamma-ray Space Telescope datasets.
WISE launched in 2010 and completed its cryogenic primary survey before transitioning to a post-cryogenic mission phase and later reactivation as NEOWISE focused on near-Earth object detection, with operations coordinated by NASA and mission management at Jet Propulsion Laboratory. Upgrades and reactivation efforts involved teams at University of California, Los Angeles, IPAC, and partners experienced from missions such as Spitzer Space Telescope re-purposing campaigns. The mission timeline intersects programs and policy milestones overseen by NASA Headquarters, with legacy data continuing to support projects at institutions including Caltech, Harvard, Max Planck Society, and national observatories planning follow-up observations with James Webb Space Telescope and ground-based facilities.