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The environment panel

The envi(ronment) panel (Fig. 17) displays temperature and relative humidity values measured outside and inside the dome, and at the Cassegrain focus of the telescope, where the CCD camera is attached.

Additionally the relative brightness level (light pollution) is measured by a light sensor at the Cassegrain focus. For values $<$15% observing is possible. Above $>$40% the ambient light is too high for observations.

Dieter Engels