20001211: Single Chord Ops-ADMIN NOTICE NOUS40 KWBC (fwd)

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NOUS40 KWBC 111658
FOS/NOAAPORT NOTICE NO. 1835          DECEMBER 11... 2000

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 DECEMBER 05... 2000 TO JANUARY 03... 2001.

LUNAR INTRUSIONS

12/07          1155 TO 1447 UTC
12/17          2123 TO 0015 UTC
01/01          0822 TO 1112 UTC

BEVEL

NONE

SOLAR INTRUSIONS

NONE

FOLLOWING ARE TIMES OF GOES-10 SINGLE CHORD OPERATIONS
FOR THE PERIOD DECEMBER 05... 2000 TO JANUARY 03... 2001.

LUNAR INTRUSIONS

12/07          1606 TO 1848 UTC
12/18          0134 TO 0425 UTC
01/01          1229 TO 1519 UTC


BEVEL

NONE

SOLAR INTRUSIONS

NONE

TOM RENKEVENS
SATELLITE ANALYSIS BRANCH /SAB/
SATELLITE SERVICES DIVISION /SSD/
NOAA/NESDIS
THOMAS.RENKEVENS/AT SYMBOL/NOAA.GOV

THIS INFORMATION IS ALSO POSTED ON THE NWS SYSTEMS
OPERATIONS CENTER CHANGE NOTICES WEB PAGE. THE URL IS
LISTED BELOW.

HTTP/COLON///WWW.NWS.NOAA.GOV/OSO/NOTICES/NOTICES.SHTML
/LOWER CASE/




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