The installation of the instrument in the building was completed and lightning protection was installed.

Temperature and humidity sensors were installed in the instrument room and the front room. The first results over the past few months indicate that when limiting the number of visits to the instrument room, it should be possible to keep the temperature stabilized to well within 1 degree. The humidity varies by up to +/-10%, but the avarage has slowly decreased from $\sim$40% to $\sim$30%. At the end of the summer we expect to have a proper view of the overall variations in both temperature and humidity.

It will likely take until after regular work in the instrument room has finished before more detailed tests can be made to check the effect on the stability of the spectrograph.

Thomas Augusteijn 2006-05-08