In 1928 he joined the staff of Mount Wilson Observatory, where he would remain until 1947.

The telescope was first installed at Mount Wilson Observatory in 1889.

Shortly after he became a staff member at Mount Wilson Observatory.

Hamner had said they played hell with the seeing at Mount Wilson Observatory.

After ten years, in 1955, she finally gained access to the Mount Wilson Observatory, posing as her husband's assistant.

In 1925 she began studying the solar spectrum at the Mount Wilson Observatory.

He worked at the Mount Wilson Observatory from 1907 until 1948.

Many of the velocity measurements were made at Mount Wilson Observatory.

Now the Mount Wilson Observatory has been given a second working life.

During his studies he worked at the Mount Wilson Observatory in California from 1934 to 1936.