Tickets go on sale today for Lick Observatory's summer visitor's program. At the program, you can look through the 36 inch Great Lick Refractor and the 40 inch Reflecting Telescope. In the event of low visibility (fog, rain), they'll have two programs. Other informal and formal talks go on that evening as well.
Ages 8 and older recommended. Programs begin at sunset, with viewing after dark.
Here are the dates of the program (the latter date) and ticket purchase date per program (the first date). Six tickets per household per date. Tickets are $5 each, including service fee. Get tickets and more information here.