Ten minutes later he stood at the door of the observatory.

Today, the Society has an agreement for use of the observatory.

The main purpose of the observatory was a time service.

He served as the director of the observatory from 1888 until his death in 1892.

He continued in charge of the observatory until his death.

He became director of the observatory in 1915, and held this post until 1944.

A copy of the observatory has been built around it and is open to the public.

In 1991, he became director of the observatory, and served at this post until 2002.

The door of the observatory closed automatically in his face.

She decided not; it wouldn't hurt him to sit a while longer, and there was still the business of the observatory to run.