New Crocker Dome

The dome is marked in black on the 7.5' USGS topo map. This implies that it must have existed by 1955. The only instrument which anyone can recall in this dome was a 5- or 6- inch camera borrowed from Pasadena in the 1950s. For most of its history this dome has lain empty. During the 1980s and 1990s it was used by Gene Harlan for some of his personal telescopes. In 1997 the dome was refurbished for NASA for wide field sky surveys.

Wooden pad and pier atop Tycho Brahe Peak

There is a wooden platform with a steel pier just east of the Crocker Dome. It sits on the high point of Tycho Brahe Peak, which was leveled slightly to accommodate it. This was constructed by Gene Harlan for use in seeing monitoring experiments (1960s? 1980s?), and it had a canvas dome. Steve Vogt and friends may also have used this pier while students at Berkeley.

Cinder Block polar pier just northeast of New Crocker dome

This structure held several fixed telescopes aimed at Polaris for seeing monitoring experiments that were performed by Gene Harlan. (1960s? 1980s?)

Geodetic Positions of Instruments and other structures

All horizontal positions are expressed in the 1983 North American Datum. The positions of the features on the inhabited core of Mt. Hamilton should be accurate to 6 1/2 feet or better. The vertical positions are not as well known and may be off by 33 feet.