Mirror cleaning

Occasionally the mirrors have been cleaned with $CO_2$ and washed, and currently the measurements show that the reflectivity of both mirrors are only slightly degraded compared to the values shortly after aluminisation. Also given that we will likely be able to wash the mirror more often with the return of Peter Brandt, there is no need for an aluminisation of the mirror(s) in the near future.



Thomas Augusteijn 2008-01-11