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The Visual Spectral Editor is divided into a number of panels:
-
Visualisation
: This is the heart of the Visual Editor, displaying the ALMA bands, atmospheric transmission, spectral windows, sidebands and the first local oscillator as a function of frequency (in both the observed and source frames).
-
Spectral Type
: Here you specify whether you wish to observe in spectral line or single continuum mode. A spectral scan mode will one day also be possible. The number of polarization products is also specified. The details of these fields are discussed in Section
6.3.3
.
-
The contents of this panel depending on what
Spectral Type
was chosen, but in each case is used for entering the spectral line or continuum frequencies. The details of these fields are also discussed in Section
6.3.3
.
-
Spectral Setup Errors
: If an impossible spectral setup has been defined, errors (in red) will appear here.
-
Targets
: This lists the sources that have been defined in the Field Setup secion of the Science Goal. Selecting a particular source will cause the defined spectral lines to move based on the velocity of that source. The positions of the sidebands will not move - they always correspond to the first source in the list.
An example of the Visual Spectral Editor is given in Figure
10.1
.
Figure 10.1:
The graphical representation of the frequency information in a Science Goal. The top graph shows the ALMA receiver bands, the transmission curve and the sidebands and LO1. The tables provide frequency settings and source information.
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Next:
Receiver and LO Visualisation
Up:
The Visual Spectral Editor
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The Visual Spectral Editor
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The ALMA OT Team, 2011 May 20