are used to simulate the lighting conditions at a specific
latitude, time of year and time
of day. In this fixed sun style the
model is adjusted in relation to a mounted light source
- a narrow beam flood lamp 30 to 40 feet distant with
an output of 600 to 1000 watts, representing
most recent device H04 was constructed for the American
University in Cairo, Egypt. This device was fabricrated
as per the heliodon at Ball State University in Muncie,
included on these two instruments are machine engraved
scales and a spring loaded split worm gear arrangement.
HERE to see vist ithe BSU / CERES
web site .
A D performed the detailed design, machining, finishing
and assembly of the first two heliodons in
collaboration with professor Chris Benton, UC Berkeley,
and Paul LaBerge.
original device is at the Pacific Gas and Electric Co.'s
Pacific Energy Center in San
Francisco, CA. ( built in 1991 and in still in daily
use with several thousand studies completed ) and the
second instrument is at the University
of Hawaii at Hilo.
HERE to jump to the PGE
/ Pacific Energy Center site for more information.
HERE for more information and
HERE for a PDF spec sheet.
HERE for a MSWord document spec