Private daytime programs (guided tours and solar viewings) for larger groups are available for a fee on a limited basis. Contact the Visitors Center at least 3 months in advance to inquire about reservations. Special rates are also available for school groups. Private programs must be scheduled at least 40 days prior to the requested date. Contact: Frank Cianciolo Senior Program Coordinator, frankc @ utexas .edu (remove the spaces), 432-426-3640.