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. 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. Stockholm Observatory also accepts apprentice students from secondary schools for one-week internships at the Observatory.