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 visitation of a comet. Twice a week, an astronomer is on telephone-duty for questions from the general public. Other staff members are available for consultation by secondary school students. Stockholm Observatory also accepts apprentice students from secondary schools for one-week internships at the Observatory.