next up previous contents
Next: Configure the spectral setup Up: Proposal creation and submission Previous: Create a Science Goal   Contents


Add the source information

A source can contain either one or more individual pointings (offset pointings or custom mosaic) or 1 rectangular mosaic. All pointings defined in a given source share the velocity information and Expected Source Properties. Setting up the actual pointings within a source is covered in Step 3.6. For the moment, it is sufficient to enter the source information, especially the velocity, as this will be used for the spectral setup.

By default, the Field Setup editor pane (see Fig. 3.2) contains one source tab. The first thing to select is the Target Type: Individual Pointings or 1 Rectangular field. The target type must be the same for all sources in a Science Goal, and it is not possible to switch to 1 Rectangular field once additional sources have been added. You can then use the Add source button to open additional source tabs. You will need to specify the source information for each source individually. If your source has an entry in SIMBAD or NED, you can simply type in its name in the Source Name field and hit Resolve to import the field centre coordinate and velocity information from there (see Fig. 3.2). Otherwise, this information must be entered by hand. Solar System targets can be selected from a pull-down list if the Choose a Solar System Object box is checked.

to to by -2 bp
Image Warning-icon-hi It is your responsibility to ensure that the source information is correct. The source coordinates and the velocity are used by the OT to calculate the pointing(s) and the sky frequencies respectively. The expected source properties are used for the technical feasibility assessment of your proposal, and incorrect or incomplete information may lead to the rejection of your proposal on technical grounds. For more information on how to convert existing flux measurements for your source to the peak flux density per synthesised beam required by the OT please see Knowledgebase articles 'How can I estimate the Peak Flux Density per synthesised beam using flux measurements in Jy or K from other observatories?' and 'How do I convert flux measurements given in Jy km/s or K km/s into the peak flux density required by the OT?'.
0.85 0.85 0.85 rg


width height depth 0 0 0 rg =0bpto

For each source, you are required to provide an estimate of the expected source properties. The peak flux density entered should be an estimate of the weakest component driving the sensitivity requirement of your Science Goal. For continuum observations only the Peak Continuum Flux Density per Beam is required, while for spectral line and spectral scan observations the Peak Line Flux Density per Beam and the (FWHM) Line Width must be specified. In the latter case it may also be appropriate to enter the Peak Continuum Flux Density per Beam if you want to observe both lines and continuum. The Line/Continuum Polarisation Percentage is required only if full polarization observations are requested. The expected source parameters entered are used to calculate a number of quantities in the Technical Justification editor (see Step 3.9) and the proposal/science goal summary sheets. They should be used for guidance when choosing the correlator setup and sensitivity requirements for your Science Goal.

to to by -2 bp
Image didyouknow You can also read in the complete source information from an ASCII file using the Load from File... button at the bottom of the Field Setup editor. This is particularly useful if you have a large number of sources. As with adding sources manually you should make sure that the correct Target Type is set before you load the source list. For the required file format, please see the Field Setup section of the ALMA OT Reference Manual.
0.85 0.85 0.85 rg


width height depth 0 0 0 rg =0bpto


next up previous contents
Next: Configure the spectral setup Up: Proposal creation and submission Previous: Create a Science Goal   Contents
The ALMA OT Team, 2016 Aug 23