az,za positions for JJ1330+251 11 10 za 9 8 7 140 160 180 az [deg] 200 220 A0 SFgrid,az,za offsets with and without iteration 2 ZaOffTel [Amin] 0 -2 -4 -6 -6 -4 -2 0 azOffTel [Amin] 2 4 6 Change in az,za positon vs za for SFgrid A0 rows 1-19 4 2 Arc seconds 0 -2 -4 6 7 8 9 za 10 11 12

... 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. ...