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SPLAT
SPLAT
SPLAT (Spectrum Analysis Tool) is a tool to analyse and display 1-dimensional spectra.
Full information about this tool can be obtained from the
SPLAT manual.
It can be started by typing:
> splat filename.sdf
or from
GAIA (= GAIA-3d)
after clicking on a pixel to extract the spectrum at that
position, and then in the window "Display Image sections of a cube" by
clicking on Spectrum --> Send :replace (or Send: add)
Options
Some features appear not yet well described in the manual.
Clicking on Options --> Line identifiers --> Load all matching line identifiers shows the velocities (frequencies) of all spectral lines (these are taken from
the list in JCMTOT) in the range visible in the plot.
To see lines which are in the image side band one first needs to change the
sideband in the plot by clicking on Units (a Current Spectral Units window
will appear) and then change the sideband in the pull-down menu at the
right side.
Clicking on Options --> Display synopsis will show information about the
spectrum in the plot window.
Clicking on Options -> Only Display spectra within axes will remove the part
of the spectrum outside the box from the plot.
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