How quickly do lunar temperatures flucuate?

>...
> Here's what I'm curious about. Actually there are two classes of
> objects. The first would be the actual lunar mining habitat. It
> would be radiating heat, I'm thnking that ISRU such as lunar
> ...
> The second class of object is what I'm most concerned about because
> they would be more fragile than a building envelope, and this class
> of objects would the the base support equipment that is exposed on
> the lunar surface. Objects such as heliostats, their support
> framework, stationary mining equipment, and mining equipment that is
> operated during the night. A possible outcome of this consideration

I believe that what you are looking for would be the black body
chararteristeics of each type of material in a vaccum coupled with a
thermal flow anaylsis.

A thought that your questions brought to my mind is about structures
that are in full sun with part of the structure in shade. There could
be serious fracture problems depending on the coefficent of expansion
and the thermal characteristics of the material. I have been attempting
to make items out of glass (pyrex type COE 90) for a current project and
it is very important to control the rate of cooling to avoid having the
glass explosivly shatter due to stress from the interior being hotter
than the exterior.

Mitchell James