Free. Tours $5; $3 (ages 5-12 and 65+). Tours not recommended for ages 0-5.
Visitors' gallery at the 200-inch telescope open daily 9-4, during DST; 9-3, rest of year (weather permitting). One-hour guided tours Sat.-Sun. at 11 and 1:30, Apr.-Oct. Phone ahead to confirm schedule during inclement weather. Closed Christmas Eve and Christmas.