The spectral response for the CO J 1-0 transition region. The spectral resolution has been oversampled by a factor of ~10 for a window surrounding each of the CO transitions listed in Table E.1, the asterisks show the spacing of independent spectral data points. This region was selected to include the rest frequency (± 300 km s-1 – vertical dotted lines) for each of the CO, C13O, CO17, and CO18 isotopes. Also shown is the band average spectrum for each region.
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