Description
The NEOWISE Post-Cryo Preliminary Data Release contains 3.4 and 4.6 um (W1 and W2) Single-exposure image and extracted source data that were acquired by Wide-field Infrared Survey Explorer (WISE; Wright et al. 2010) following the exhaustion of solid hydrogen in the satellite's payload inner and outer cryogen tanks. During this period, known as the NEOWISE Post-Cryo survey phase, the WISE optics and focal plane assemblies warmed to 73.5 K, and the W1 and W2 HgCdTe detectors continued to operate with sensitivities close to those achieved during the full cryogenic mission phase. No useful data were obtained by WISE's 12 and 22 um Si:As detectors because of the higher temperatures. WISE scanned approximately 70% of the sky during the Post-Cryo phase, completing a survey of the inner Main Asteroid Belt, and a second coverage epoch of the inertial sky.
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