As a part of the admission payment software modules are developed for the planning and analysis of observation data which are taken with ESO telescopes. As oberving time at large telescopes is very expensive, they must be carried out as efficiently as possible. The calculation for such a planning is this one an essential aspect for the scientific examinations of required time at the telescope. The interaction of the incomming waves with the of it is the so-called sky background, which influences the light of the astronomical object to be suppressd and distorted. This sky background has many components: e.g. the moonlight, the zodiacal light, the thermal radiation of the telescope itself, molecular absorptions and emissions, ....

The earth's atmosphere works also like a filter by which the light of the astronomical objects is changed.

The software development project of the University of Innsbruck cover projects like

• Modeling of the issues of the low atmosphere
• Semi-Empirical model of the Auora
• Absorptions of the night sky - "telluric feature corrections" -
• Light of the moon
• Wavelength corrections at the Airglow for the purpose of optimal post processing
• et.

A more extensive description can be found on http://www.uibk.ac.at/eso/in-kind/innsbruck.html .

The numerical models are designed for high-altitude arid regions to fit best to the needs of the observatories. An adoption for regions with high atmospheric humidity as they prevail in Central Europe is not forsen at the moment.