... R2517 Date Received: 2009-Jul-02 20:55:18 Technical Page Proposal Type: Urgent General Category: Planetary Radar Observation Category: Solar System Total Time Requested: 17:00 Hours Minimum Useful Time: Proposal Title: Urgent Proposal for Arecibo Radar Imaging of Near-Earth Asteroid 2009 KC3 ABSTRACT: We propose radar observations of potentially hazardous asteroid 2009 KC3, which will be a strong imaging target during its approach within 19 lunar distances in August, 2009. ...

... 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. ...