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http://www.naic.edu/~astro/RXstatus/430G/430greg.shtml.
http://www.naic.edu/~astro/RXstatus/430G/430greg.shtml.
1. Arecibo Observatory 327-MHz Gregorian Receiver
327-MHz Gregorian . ... Calibration Beam Parameters . ... Receiver History . ... 327-MHz Gregorian (P Band) . ... Beam Maps . ... For the current frequency v time 327-MHz RFI plot from the Arecibo "hill-top" monitoring system, click here . For the current frequency v time 327-MHz RFI plot (with band-pass correction) from the Arecibo "hill-top" monitoring system, click here . For the current daily rms/mean v frequency 327-MHz RFI plot from the Arecibo "hill-top" monitoring system, click here . ...
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Ссылки http://www.naic.edu/~astro/RXstatus/327/327greg.shtml -- 13.8 Кб -- 03.02.2013
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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. ...
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Ссылки http://www.naic.edu/~phil/mbeam/hipass.pdf -- 370.1 Кб -- 14.03.2003
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