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Calculating the PNT keywords

The RA_PNT, DEC_PNT and PA_PNT keywords, together with the AVRG_PNT keyword which records the type of average used, are meant to describe the average value of the spacecraft attitude during the exposure. The way in which they are calculated however is controlled by the source chosen for the attitude information, as follows:

XMM-Newton SOC -- 2021-11-30