All large telescopes are reflectors. Click here for background information on refraction, reflection, and why most research telescopes are reflectors. For optical telescopes, this is 10 -5 cm. See image at right. Other EM spectral bands.
Astronomers now exploit wide regions of the full electromagnetic spectrum.
Charlottesville Last modified 27 February 1999 by rwo Back to the list of study guides Back to the ASTR 121, Sec. All rights reserved. These notes are intended for the private, noncommercial use of students enrolled in Astronomy 121 at the University of Virginia. Reproduction, distribution, and commercial uses are prohibited.