NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Kick-Off Ceremony of the Arecibo Observatory 50th Anniversary . ... If you change the setting, it will apply to this article. ... Inherited €аmeans that the permissions from global configuration, parent group and category will be used. Denied €аmeans that no matter what the global configuration, parent group or category settings are, the group being edited cannot take this action on this article. ...
... 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. ...