Attendance is by reservation for individuals, groups or school classes.
Lectures are also given by the observatory staff at these occasions. These Open Houses may be timed to coincide with a celestial event such as a solar eclipse or the appearance of a bright comet. During 1999, such an occasion was a partial solar eclipse on August 11. Twice a week, an astronomer is on telephone-duty for questions from the general public. Other staff members are available for consultation by secondary and high school students.