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795 NOUS40 KWBC 081533 FOS/NOAAPORT NOTICE NO. 1857 JANUARY 8... 2001 ATTENTION FAMILY OF SERVICES SUBSCRIBERS/NOAAPORT USERS SUBJECT GOES SINGLE CHORD OPERATIONS GOES SINGLE CHORD 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 JANUARY 04... 2001 TO FEBRUARY 02... 2001. LUNAR INTRUSIONS 01/04 1033 TO 1324 UTC 01/13 1919 TO 2209 UTC 01/16 2142 TO 0045 UTC 01/31 0831 TO 1122 UTC BEVEL 01/28 0237 TO 0707 UTC 01/29 0237 TO 0707 UTC 01/30 0237 TO 0707 UTC 01/31 0237 TO 0707 UTC 02/01 0237 TO 0707 UTC 02/02 0237 TO 0707 UTC SOLAR INTRUSIONS NONE FOLLOWING ARE TIMES OF GOES-10 SINGLE CHORD OPERATIONS FOR THE PERIOD JANUARY 04... 2001 TO FEBRUARY 02... 2001. LUNAR INTRUSIONS 01/04 1441 TO 1733 UTC 01/13 2324 TO 0217 UTC 01/28 0713 TO 1317 UTC 01/31 1236 TO 1527 UTC BEVEL 01/27 0713 TO 1153 UTC 01/29 0713 TO 1153 UTC 01/30 0713 TO 1153 UTC 01/31 0713 TO 1153 UTC 02/01 0713 TO 1153 UTC 02/02 0713 TO 1153 UTC SOLAR INTRUSIONS NONE TOM RENKEVENS SATELLITE ANALYSIS BRANCH /SAB/ SATELLITE SERVICES DIVISION /SSD/ NOAA/NESDIS THOMAS.RENKEVENS/AT SYMBOL/NOAA.GOV ---------- End Forwarded Message ----------
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