Absolute corrections c(V²) on the single V² points derived for the chromaticism for the night of July 23rd. We first show the correction for K type stars to illustrate the magnitude of the corrections. Then we show the difference between the corrections for K type stars and stars of other spectral types, which is more illustrative of the actual error made by ignoring the correction but calibrating with K-type stars. Different lines show different baselines. The error bars illustrate the scatter of the correction for the different stars.