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Service Outage
On Saturday, July 27, from 11:00 to 21:00 UTC (7 am to 5 pm US Eastern Time), all MAST services will be unavailable due to maintenance.
Copernicus
The Copernicus satellite, otherwise known as the Orbiting Astronomical Observatory 3 (OAO-3), obtained a series of high resolution far- (900-1560 Å) and near- (1650-3150 Å) ultraviolet spectral scans of 551 objects, primarily bright stars, from 1972 to 1981.Real Time Satellite Tracking for Copernicus
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