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NOUS40KWBC 041343
FOS/NOAAPORT NOTICE NO. 1473 MAY 4... 1999
ATTENTION FAMILY OF SERVICES SUBSCRIBERS
NOAAPORT USERS
SUBJECT 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 MAY 03... 1999 TO JUNE 01... 1999.
LUNAR INTRUSIONS
05/10 2328 TO 0223 UTC
05/14 0206 TO 0459 UTC
05/23 1036 TO 1327 UTC
BEVEL
05/03 0237 TO 0707 UTC
05/04 0237 TO 0707 UTC
05/05 0237 TO 0707 UTC
SOLAR INTRUSIONS
NONE
FOLLOWING ARE TIMES OF GOES-10 SINGLE CHORD OPERATIONS
FOR THE PERIOD MAY 03... 1999 TO JUNE 01... 1999.
LUNAR INTRUSIONS
05/11 0332 TO 0634 UTC
05/23 1447 TO 1738 UTC
05/26 1655 TO 1945 UTC
BEVEL
05/03 0713 TO 1153 UTC
05/04 0713 TO 1153 UTC
05/05 0713 TO 1153 UTC
05/06 0713 TO 1153 UTC
05/07 0713 TO 1153 UTC
05/08 0713 TO 1153 UTC
SOLAR INTRUSIONS
NONE
STEVE ARNETT
SATELLITE ANALYSIS BRANCH
SATELLITE SERVICES DIVISION
NOAA/NESDIS
STEVE.ARNETT/AT SYMBOL/NOAA.GOV
END
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