R. Parthasarathy et al., A ROOFTOP RADIO OBSERVATORY - AN UNDERGRADUATE TELESCOPE SYSTEM AT THE UNIVERSITY-OF-CALIFORNIA AT BERKELEY, American journal of physics, 66(9), 1998, pp. 768-771
We describe the 1- to 2-GHz radio telescope built by undergraduates wi
th faculty guidance at the University of California at Berkeley. The t
elescope is optimized to observe the 1420-MHz (21-cm) emission line of
neutral atomic hydrogen and is used in the recently created advanced
undergraduate radio astronomy laboratory course, as well as in part of
a graduate course on astronomical observation. We discuss the design
of the telescope and the structure of the course and also present astr
onomical observations made with the telescope. (C) 1998 American Assoc
iation of Physics Teachers.