XMM-Newton Users Handbook

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4.5 Observation overheads

As for all telescopes, XMM-Newton observations are affected by operational overheads. We outline here which overheads apply to XMM-Newton observations. Some of these overheads need to be taken into account in XMM-Newton observing proposals, and they will be added on top of the requested science duration as warranted.

There are two categories of overheads:

  1. Operational overheads

  2. Instrument and setup overheads.


European Space Agency - XMM-Newton Science Operations Centre