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My run can be executed more efficiently if my OBs are executed one after another, skipping the acquisitions for the latter OBs. Why cannot I ask for such a procedure for service observing?

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My run can be executed more efficiently if my OBs are executed one after another, skipping the acquisitions for the latter OBs. Why cannot I ask for such a procedure for service observing?

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There is no guarantee that user specified conditions will last long enough to complete any given OB sequence. Furthermore, breaking down a sequence of OBs often improves overall operations efficiency by allowing the execution of OBs best matching the external conditions. Therefore, to maintain the flexibility needed to adapt to changing observing conditions and to maximise operations efficiency, ESO requires that all Service Mode OBs be treated as independent observations with independent acquisitions. As long as you have requested enough overhead time at Phase I, there is no penalty to your run.

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