Key Takeaways:
- Upon its completion in 1888, the 36-inch Lick refractor became the world's largest telescope, establishing Lick Observatory as the foremost astronomical research site.
- This instrument provided a significant technological advancement, boasting nearly twice the light-gathering power of the preceding largest 26-inch telescope.
- The construction on Mount Hamilton presented substantial logistical challenges, requiring the development of a 26-mile access road and the use of horse-drawn wagons for material transport due to the site's isolation.
- The observatory's centennial, encompassing its planning, construction, and early astronomical endeavors, was commemorated in the May 1988 issue of *Astronomy* magazine.
No tour of astronomical hot spots in Northern California would be complete without a pilgrimage to Lick Observatory. When it was finished in 1888, Lick immediately became the world’s premier astronomical research site. Until then, the biggest telescope was 26 inches in diameter. Lick’s gigantic refractor spans 36 inches, giving it nearly twice the light-gathering power of the 26-incher.
Of course, Mount Hamilton was a bit more isolated from civilization in 1888 than it is today. Back then, a work crew had to build a 26-mile (42 kilometers) road to access the summit. And there were no cars or trucks to lug equipment and supplies up. That task fell to horse-drawn wagons.
In the May 1988 issue of Astronomy, we celebrated the observatory’s centennial with John R. Gustafson’s look at the planning and construction of Lick as well as the early astronomical endeavors at the observatory. It will give you some historical perspective before you make your trip up Mount Hamilton.

