VAN VLECK OBSERVATORY
Wesleyan University
Middletown, Connecticut
(Top): The refracting telescope with lenses of 20-in (50 cm)
aperture is used to determine precise distances and mo-
tions of stars.
(Below): The Richard S. Perkins reflecting telescope with
mirror of 24-in (60 cm) aperture is equipped with a spec-
trograph and a photoelectric photometer which are used
to determine the physical properties of stars.
MID-10
© 1983 The Color Studio, Inc., P.O. Box One, New Haven, Conn. 06501
