The new sky model has been updated with adjusted ozone and CO2 abundances and minor changes in the moonlight model.
The outer-scale parameter L0 in the atmospheric part of the seeing/IQ model has been changed in all ETCs, except VISIR
in which L0 was already updated in the previous ETC release.
This has changed the S/N reference area, in particular at long wavelengths.
VISIR ETCs sensitivites updated.
SkyCalc: New sky model version and additional plot options.