XMM Users' Handbook

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Raster observing mode

XMM does not have any capability to create a ``raster'' of nearby pointings via small aspect motions with minimal operational overhead. Each observation must be requested individually (via XRPS) and will be handled separately. This implies that each observation has the full operational overhead of a slew to the target and the acquisition of a tracking star attached to it and from the viewpoint of scheduling it implies that such observations will not automatically be scheduled consecutively within one or consecutive orbits.

European Space Agency - XMM Science Operations Centre