| About ROSAT |
ROSAT Home Page | ROSAT Images |
|---|
The XRT star tracker should not be exposed to bright optical sources. In particular, with the moon in the FOV of the star tracker an optimum aspect solution cannot be derived. For all pointings the lunar position will be checked and observations violating this constraint will not be scheduled. Because of the relatively fast apparent motion of the moon on the sky, only time-critical observations should be affected by this constraint.