Proposal Identification No.: A1862 Date Received: 2003-Oct-01 17:19:19 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Galactic 40 Hours A targeted search for a warm molecular phase in the Magellanic Stream We request 40 hours of Arecib o observing time for a targeted, deep search for OH and CH emission at the northern tip of the Magellanic Stream. ... 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. ...