... R2319 Date Received: 2007-Feb-01 19:56:22 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Planetary Radar 41.5 hrs Hours 3 hrs Survey of XME asteroids We propose to continue our campaign of observing X, M, and E-class asteroids using the S-band radar. Our previous observations have doubled the number of observed M-class asteroids and suggest that only one-third are metallic. ...

... 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. ...