Through a well connected friend I consider myself very fouturnate to have been given the "cook's tour" last week. Some happy snaps here:
http://www.atscope.com.au/BRO/galleyOS12.html
Caltech have improved their public outreach program significantly since I first visited this astronomy Mecca some 15 years ago.
If you are in Southern California and have a spare day, it's well worth the 3 hour drive from LA to the 200" as guided tours are also available to the public.