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Paper: Stray Radiation: Causes, Curses, and Cures
Volume: 278, NAIC-NRAO School on Single-dish Radio Astronomy: Techniques and Applications
Page: 397
Authors: Lockman, Felix J.
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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