It is often best to arrive sometime after the start of a session to avoid long lines. In addition to the main telescope under the dome, one or two smaller telescopes will be set up on the observing deck. Each telescope will staffed by a physics dept. faculty, student, or guest astronomer to answer any questions. Look at as many things as you like, and feel free to request your own observing targets. Dress appropriately for the weather, since the dome is unheated and the observing deck is outside.