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447 NOUS72 KNCF 240327 ADMNCF - PLEASE PASS TO MIC/HIC, ESA, ITO, AND SOO - SUBJ: AWIPS GOES IMAGERY INTERRUPTIONS DUE TO SOLAR KEEPOUT - EFFECTIVE NOW UNTIL APRIL 30, THERE WILL BE PERIODS OF TIME ROUGHLY AS MUCH AS THREE HOURS WHEN THE GOES-E AND GOES-W SATELLITES WILL NOT BE PRODUCING IMAGES DUE TO THEIR POSITION IN RELATION TO THE SUN. BOTH SATELLITES WILL NOT BE AFFECTED AT THE SAME TIME. THE SPACECRAFT WILL ALTERNATE TAKING FULL DISC IMAGES TO ACCOUNT FOR THE ONE AFFECTED. WHILE TAKING FULL DISC IMAGES, RAPID SCAN OPERATIONS WILL NOT BE POSSIBLE. IT IS NECESSARY TO TURN OFF IMAGERY FROM THE GOES SATELLITES DURING THESE TIMES TO PROTECT THE IMAGERS FROM INTENSE LIGHT GOING INTO AND COMING OUT OF THE ECLIPSE PERIODS AND TO CONSERVE ENOUGH ENERGY TO POWER HEATERS DURING THE TIME WHEN THE SOLAR PANELS CANNOT ABSORB SUNLIGHT. THIS IS A NORMAL OCCURANCE EACH SPRING AND FALL. THE EXACT OUTAGE TIMES ARE POSTED ON THE WEB AT http://www.ssd.noaa.gov/PS/SATS/eclipse.html. - NCF/sab
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