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Title:
Stray Radiation: Causes, Curses, and Cures
Authors:
Lockman, Felix J.
Affiliation:
AA(National Radio Astronomy Observatory, P.O. Box 2, Green Bank, West Virginia 24944, USA)
Publication:
Single-Dish Radio Astronomy: Techniques and Applications, ASP Conference Proceedings, Vol. 278. Edited by Snezana Stanimirovic, Daniel Altschuler, Paul Goldsmith, and Chris Salter. ISBN: 1-58381-120-6. San Francisco: Astronomical Society of the Pacific, 2002, p. 397-411
Publication Date:
12/2002
Origin:
AUTHOR
Comment:
ISBN: 1-58381-120-6
Bibliographic Code:
2002ASPC..278..397L

Abstract

Radio telescopes have some response to signals from all directions, not just the direction of the main beam, and thus observations can be contaminated by ``stray'' radiation which enters the receiver through a sidelobe. This paper considers the origin and characteristics of stray radiation, and discusses some techniques which have been developed to minimize its effects, or to remove it from measurements. The new Green Bank Telescope should be substantially free from stray radiation, and a bootstrap technique using its data might be developed to reduce the stray radiation in Arecibo 21cm HI measurements as well.

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