next up previous contents index
Next: Resources: Field Sources Up: Targets and Resources Previous: Targets and Resources   Contents   Index

Targets

A Target essentially defines an observation of a given source that will take place in the timescale of one SB. Its definition is close to the idea of a scan. Targets are stored in the Target folder which is the first visible when expanding the SB in the project structure.

The complete observing details of a target are described in the Target form. The form consists of three panels Field Source , Instrumental Setup and Observing Parameters . The fields in these panels are defined by filling out theforms in the corresponding folder in the SB Resources folder and attaching these forms to the Target. To be valid, a Target must have at least one attached Field Source, Instrument Setup and Observing Parameters.

Figure 8.3: An example of the Target and Resources folder in a Scheduling Block.
\resizebox{8cm}{!}{\includegraphics{images/TargetsResources.eps}}

Working with attachments allows constituent parts of a Target to be re-used, e.g. the same Spectral Setup may be used in two different Targets, without copying or entering the information twice. Attachments also provide the ability to specify the scientific intent of a Target and to allow multiple intents for any given Target. For example, a science Target may also act as a calibration observation (phase, amplitude, etc.).

Normally, a science Target has one parameter set attached to each of the Field Source , Instrument Setup and Observing Parameters folders.

In the case that a SB contains more than one Target, it is necessary to select one of these to be used as the Representative target for that SB. This Representative Target is then used to monitor performance goals.

To set a Representative Target , select it in the Target folder in the Project Structure tree and use a right mouse click to get the popup menu. Select Set As Representative Target . This selection will then fill the field Representative Target in the SB form. Clearly, only one Target may be selected per SB. Representative Target can be left empty if the SB contains only one Target.


next up previous contents index
Next: Resources: Field Sources Up: Targets and Resources Previous: Targets and Resources   Contents   Index
The ALMA OT Team, 2011 May 20