Startracker configuration codes
During the breakdown of nearly all gyroscopes of SAX, the method to reach and maintain the pointing of the satellite was changed.
Accordingly, in the attitude file of each FOT a column is added among the coordinates, which denotes
the sensors in use at each time.
In this way the precision of the pointing can be followed in time.
The startrackers are known by the satellite axis which they stabilise (-X,Y,Z).
| Code | Sensors in use |
| 0 | Quadrant sun sensor + gyro |
| 1 | -X startracker + gyro |
| 2 | +Y startracker + gyro |
| 3 | +Y startracker + -X startracker |
| 4 | +Z startracker + gyro |
| 5 | +Z startracker + -X startracker |
| 6 | +Z startracker + +Y startracker |
| 7 | +Y startracker + Quadrant sun sensor |
Back to WFC software homepage
Back to WFC walk through
Latest update: March 16 1999