Lick Observatory, 14 miles east of San Jose, is a major research facility serving astronomers from throughout the University of California system. As San Jose and other cities in the Santa Clara Valley plan for future expansion and development, lighting will be an ongoing issue of concern for their citizens and for Lick Observatory. How can the needs of the Santa Clara Valley be met while still preserving the position of its observatory neighbor at the forefront of astronomical research? We propose the following measures to achieve both goals:
Use of Low Pressure Sodium (LPS) for the majority of street lighting, as well as use of LPS lighting in public and private development parking lots
Use of mixed lighting for areas heavily traveled by pedestrians
Use of the minimum amount of lighting needed for the intended purpose
Use of lighting controls, such as timers and dimmers, so lighting is not used when not needed
Control of emitted light by fixture choice, by shielding, and by placement so light is directed to the ground and not the sky
For more information contact:
Office of the Director
UCO/Lick Observatory
University of California
Santa Cruz, CA 95064
Phone (831)459-2991; Fax (831)459-5244;
or visit the Lick web site
Photo Credits:
Santa Clara valley at night: Laurie Hatch;
Lick observatory views, lamp spectra, Asteroid San Jose: Lick Observatory;
dome with laser, Shane telescope: Lawrence Livermore National Lab;
U.S. at night: NASA