... R2297 Date Received: 2007-Jan-30 11:01:19 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 6 Hours Radar Imaging of a Fast-Rotating Near-Earth Asteroid Based on its visual brightness, asteroid 2006 AM4 is about 150m in size. ... This ob ject will be observable at Arecibo with enough SNR for imaging on 2007 Feb 1-3. ...

... 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. ...