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
22 to June 19, 2002.
LUNAR INTRUSIONS
05/23 1219 to 1541 UTC
06/03 2218 to 0108 UTC
06/07 0015 to 0310 UTC
BEVEL
None
SOLAR INTRUSIONS
None
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Following are times of GOES-10 single chord operations for the period
May 22 to June 19, 2002.
LUNAR INTRUSIONS
05/23 1659 to 1952 UTC
06/04 0228 to 0518 UTC
BEVEL
None
SOLAR INTRUSIONS
None
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Tom Renkevens
Satellite Analysis Branch (SAB)
Satellite Services Division (SSD)
NOAA/NESDIS/OSDPD
thomas.renkevens@xxxxxxxx