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1. Asteroids National Astronomy and Ionosphere Center (Arecibo Observatory)
NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Planetary Radar . ... Asteroids . ... Radar imaging of near-Earth asteroids can provide dramatic images with resolutions down to 8 m, comparable to the images obtained by the Galileo and NEAR-Shoemaker spacecraft. ... Asteroid 2001 GQ2 was imaged by the Arecibo radar system during April, 2001 by M. Nolan. ... These radar images of main-belt asteroid 216 Kleopatra were obtained in November, 1999, about one hour apart (Ostro et al 2000, Science). ...
[ Сохраненная копия ]  Ссылки http://www.naic.edu/general/index.php?option=com_content&view=article&id=144&Itemid=474 -- 19.2 Кб -- 13.04.2016
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2. http://www.naic.edu/~phil/mbeam/hipass.pdf
... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...
[ Текст ]  Ссылки http://www.naic.edu/~phil/mbeam/hipass.pdf -- 370.1 Кб -- 14.03.2003
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