20001113: Single Chord Operations 11/09/00 to 12/08/00 - Issued

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: 20001113: Single Chord Operations 11/09/00 to 12/08/00 - Issued
• From: trenkevens@xxxxxxxxxxxxxxxxxxxxx
• Date: Mon, 13 Nov 2000 08:17:15 -0500

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
November 09, 2000 to December 08, 2000.

LUNAR INTRUSIONS

11/10          1409 to 1701 UTC
11/23          0059 to 0350 UTC
12/07          1155 to 1447 UTC


BEVEL

11/09          0237 to 0707 UTC
11/10          0237 to 0707 UTC
11/11          0237 to 0707 UTC
11/12          0237 to 0707 UTC
11/13          0237 to 0707 UTC


SOLAR INTRUSIONS

NONE


---------------------------------------

Following are times of GOES-10 single chord operations for the period
November 09, 2000 to December 08, 2000.

LUNAR INTRUSIONS

11/10          1817 to 2110 UTC
11/23          0509 to 0800 UTC
12/07          1606 to 1848 UTC

BEVEL

11/09          0713 to 1153 UTC
11/10          0713 to 1153 UTC
11/11          0713 to 1153 UTC
11/12          0713 to 1153 UTC
11/13          0713 to 1153 UTC
11/14          0713 to 1153 UTC


SOLAR INTRUSIONS

NONE


------------------------------------------
Tom Renkevens
Satellite Analysis Branch (SAB)
Satellite Services Division (SSD)
NOAA/NESDIS
thomas.renkevens@xxxxxxxx


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