... R1824 Date Received: 2005-May-31 17:16:20 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 16 Hours Radar Observations of Near-Earth Asteroid 2003 GY Near-Earth asteroid 2003 GY approaches to within .042 AU of the Earth in August 2003. This 350-m "Potentially Hazardous" ob ject presents a high-resolution (15-m) imaging opp ortunity. ... Part of the observing run. ...

... 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. ...