... R2867 Arecibo Observatory Date Received: 2013-Sep-02 12:49:27 William E. Gordon Telescope Observing Time Request COVER SHEET Section I - General Information Submitted for Sep 1 2013. ... This proposal covers the time request for the second-best imaging opportunities, radar astrometry, and systematic survey time. ... Begin ­ End Interval­Interval ­ ­ ­ ­ Days Needed at This Interval Time Constraints (Must Be Justified in the Prop osal Text) See proposal for time request. ...

... 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. ...