LBCC Professor Seligman's Astronomy Open Houses, which are the only public shows currently being offered, have no admission charge. Donations are welcome, but not required (see Astronomy Open Houses for more information). Since any given show may attract more visitors than can be accommodated, reservations are recommended (contact courtney@cseligman.com to make reservations), but not required. Most shows have standby seating (unreserved seats, and reserved no-shows), but such seating cannot be guaranteed.Planetarium / Building Location The LBCC Planetarium is located in Room D326, on the third floor of the D building, on the LAC campus, near the northwest corner of Clark Avenue and Carson Street.