This is rather more interesting than a few nutjobs bickering over
their pet idiocies:

http://www.dmi.dk/dmi/manen_fortalle...dens_klima_2-2

As an aid to climate research, automatic telescopes are being used to
measure earthshine. The degree of cloud cover on Earth is measured
from the sunlight reflected back from the dark side of the moon
monitored continuously with a 0.1% accuracy. This is 10 times better
than satellites can achieve. This telescope is mounted on Mauna Loa to
limit man-made light pollution affecting the results. Since the
reflectance area is limited to a particular geographical region, on
Earth, further telescopes will be required on other continents to
ensure fuller coverage.

No doubt Google Translate will provide a service for those unfamiliar
with modern Danish. Or just look at the pictures. Sadly there are no
prizes for spotting the Astro-Physics mounting.