31 July 2015: Dark Current Measurements + Window cleaning

all ceilometers were checked and windows were cleaned between 05:15-07:00- Conclusions: ceilometers are working fine.

Dark Current measurements were performed with the Jenoptik/Lufft Ceilometers
CHX RAO: 06:20 -  0724 UT
CHM-100110 : 07:24 - 09:05 UT
CHM-140101: 09:10 – 10:18 UT
CHX-LMU: 10:32 – 11:51 UT