Can I specify different observing constraints (e.g. seeing, transparency) at Phase II than I specified in my Phase I observing proposal?
You can relax your constraints to increase the chances of execution of your OBs (for example, if you specified Seeing = 1.0 or better at Phase I, you can specify Seeing = 1.2 or better at Phase 2). However, more stringent constraints (like Seeing = 0.8 at Phase II in the previous example) are not allowed, as an essential ingredient of the long-term scheduling of Service Mode programmes over the semester is the constraints that users of approved programmes specified at Phase I. Allowing more stringent constraints at Phase II would thus endanger the completion of even the highest ranked programmes. An allowed exception to this are OBs needed to flux-calibrate observations that can be mostly done under non-photometric conditions, provided that accurate flux calibration is needed for the scientific goals of the programme and that the execution time under photometric conditions does not exceed 20% of the allocated time. The values in the OB constraint sets that are selected (and approved) d
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- Can I specify different observing constraints (e.g. seeing, transparency) at Phase II than I specified in my Phase I observing proposal?
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