GCN/TAN Pointing Direction Notices
several of the missions provide the pointing direction information (ie their observing plan)
ahead of time, so it is possible to turn this information onto GCN/TAN Notices for each mission.
These Notices are generated and distributed just prior to the spacecraft slewing to a new
pointing direction (or periodicaly for those drift-scanning spacecraft).
The Pointing Direction Notices allow a ground-based telescopes to "follow along" and observe
the same location on the sky, thereby getting data prior to the onset of the GRB/transient,
or at the very least, be already "on target" thus minimizing the slewing time should a burst occur.
TABLE 1: Missions with Pointing Direction Notices
|MISSION||OBS MODE||TIME PRIOR TO SLEW||PERIODIC UPDATES|
|AGILE||Drift Scan||n/a||8 hr|
|Fermi||Drift Scan||n/a||30 min|
INTEGRAL Pointing Direction Notices:
Swift Pointing Direction Notices:
AGILE Pointing Direction Notices:
Fermi Pointing Direction Notices:
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This file was last modified on 08-Sep-08.