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NASA's ASTER Expedited Level 1B Registered Radiance at the Sensor dataset provides radiometrically calibrated and geometrically co-registered satellite imagery. It is processed for expedited delivery within 48 hours of acquisition, covering Visible and Near Infrared (VNIR), Shortwave Infrared (SWIR), and Thermal Infrared (TIR) spectral bands. The data is produced by the National Aeronautics and Space Administration, with metadata last updated in March 2026.
License is specified as 'other-license-specified'; users must review terms. TIR instrument is permanently off as of 2026. Known data gaps exist from late 2024 to early 2025 due to spacecraft power unit failure. SWIR data has known anomalies post-April 2008.