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When selecting the Program tab, the Project Tree for a Phase 2 programbecomes visible. This is used to provide Phase 2 details, usually interms of Science Goals from which ObsUnitSets and Scheduling Blocks(SBs) can be automatically generated. Alternatively, advanced userscan manually create the ObsUnitSets and SBs themselves. The Phase 2Science Goal forms are located under the Science Plan node andare identical to the forms for Phase 1 (see above). An observingprogram contains the following:
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ObsUnitSet (OUS)
: This contains the Scheduling Blocks and allows the user to specify the dependence rules of the SBs within. ObsUnitSets can be nested although there are restrictions on how this can be done.
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Scheduling Block (SB)
: This is the key executable unit of a project and contains all information necessary to execute an observation. A SB can be repeated several times to achieve the desired sensitivity or to reach the maximum allocated time. Each SB is built up from a collection of Targets.
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Targets
: A Target defines an individual observation of a source. It consists of a field source definition, an instrument setup and a set of observing parameters. These are in turn contained within the Resources node.
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Resources
: This contains the definitions of the source, spectral setup and observing parameters that are required to define a Target.
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Field Source
: This defines the details of the source to be observed.
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Instrument Setup
: This specifies the frequency and correlator setup.
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Observing Parameters
: This contains the details (e.g. integration and cycle times) for various types of observation (e.g. science, calibration, pointing).
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The ALMA OT Team, 2011 May 20