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076 NOUS40 KWBC 171422 FOS/NOAAPORT NOTICE NO. 1693 MAY 17... 2000 ATTENTION FAMILY OF SERVICES SUBSCRIBERS/NOAAPORT USERS SUBJECT SINGLE CHORD OPERATIONS GOES /QUOTATIONS/SINGLE CHORD/QUOTATIONS/OPERATIONS... MADE NECESSARY BY LUNAR AND SOLAR INTRUSIONS AT THE EDGE OF THE EARTH DISK... IMPACT NAVIGATION AND REGISTRATION FOR SHORT PERIODS. USERS OF GOES GVAR DATA WILL SEE VARIABLE ERRORS DURING PERIODS OF SINGLE CHORD OPERATIONS AS NOTED BELOW. SINGLE CHORD OPERATIONS FOR THE BEVEL EFFECT ARE LISTED WHEN APPLICABLE. BEVEL EFFECT OPERATION IS INTENDED TO AVOID A SEASONAL SPACECRAFT POINTING PROBLEM WITH ALL GOES SPACECRAFT CAUSED BY THE SUN S LIGHT REFLECTING INTO THE EARTH SENSOR. FOLLOWING ARE TIMES OF GOES-8 SINGLE CHORD OPERATIONS FOR THE PERIOD MAY 15... 2000 TO JUNE 13... 2000. LUNAR INTRUSIONS 05/15 1325 TO 1616 UTC 05/16 1410 TO 1701 UTC 05/27 2245 TO 0136 UTC 06/12 1206 TO 1457 UTC BEVEL NONE SOLAR INTRUSIONS NONE FOLLOWING ARE TIMES OF GOES-10 SINGLE CHORD OPERATIONS FOR THE PERIOD MAY 15... 2000 TO JUNE 13... 2000. LUNAR INTRUSIONS 05/15 1732 TO 2023 UTC 06/09 1400 TO 1652 UTC 06/12 1616 TO 1907 UTC BEVEL NONE SOLAR INTRUSIONS NONE TOM RENKEVENS SATELLITE ANALYSIS BRANCH /SAB/ SATELLITE SERVICES DIVISION /SSD/ NOAA/NESDIS THOMAS.RENKEVENS/AT SYMBOL/NOAA.GOV END NNNN ---------- End Forwarded Message ----------
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