The CWW absolute calibration programme

Ground-based and KAO data from M. Cohen et al.

• Composites of observed spectra covering as much as possible of the 1 - 35 micron range, assembled from ground-based and KAO observations, and calibrated absolutely via accurate broadband photometry. The individual files contain information on the origin of the original data (both spectroscopic and photometric). Details about the overall calibration program can be found in the references listed here

• Extrapolations to 300 microns to support PHT long wavelength calibration. The extrapolation process is described in an accompanying explanatory note.