XMM-Newton Science Analysis System

attbin (attcalc2-1.3.3) [xmmsas_20130501_1901-13.0.0]

## Limits on attitude wander

The limits on attitude wander are defined via the parameter maxdelta, which is in arcseconds. The RA limit is set to

 (1)

where is the average declination value (the exact meaning of `average' in this context is discussed in section 3.3 below). The declination limit is just set to maxdelta, and the position angle (apos) limit is set to

where is the nominal radius of the field of view of the XMM EPIC cameras.

XMM-Newton SOC/SSC -- 2013-05-02