Opacity Project data on CD for mean opacities and radiative accelerations

All monochromatic opacity data from the Opacity Project (OP), together with all codes required for the calculation of mean opacities and radiative accelerations for any required chemical mixture, temperature and mass density, are being put on a 700-MB CD which will be made generally available. The present letter gives a concise summary of the contents of the CD. More complete documentation will be provided on the CD itself.