The visibility of sources on the sky depends on several constraints, including avoidance of solar system sources. These are:
Minimum avoidance angle: .
A solar aspect angle within the range
must
be maintained at all times. Note that this is not a bright source
avoidance cone, but driven by requirements on the spacecraft's
alignment with respect to the Sun to ensure sufficient energy
supply.
Minimum avoidance angle: .
The numbers listed here coincide with the avoidance angles used by the XMM Target Visibility Tool.