... R2208 Date Received: 2006-Jan-30 17:49:19 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Planetary Radar Solar System 10 Hours Physical Characterization of Potentially Hazardous Asteroid 2004 DC We request 10 hours of Arecibo S-band planetary radar time to physically characterize potentially hazardous near-Earth asteroid 2004 DC. ... 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. ...