... GRAPHICS SOURCE: W3OH (STAR FORMING REGION) SOURCE: TCOM (STAR) SOURCE: RHYA (STAR) SOURCE: WLEO (STAR) SOURCE: ARP220 (EXTRAGLACTIC SOURCE) Results SOURCE S W 3OH TCom RH ya W Leo Arp220 DIST ANCE S (pc) 2200 1253 617 1220 Z=0.018 TYPE SFR * * * EG INT. FLUX (Jy Km/s) 432.34 1.97 17.05 1.34 52.20 L/L (SNR) 3.6 10(6.8) 5.2 10(14.9) 1.1 10(5.9) 3.4 10(12.7) 6 Tsys (K ) 41.52 RM S/Calc 0.02/0.017 0.01/0.009 0.01/0.008 0.01/0.009 0.008/0.006 9 15.05 8 16.67 9 15.17 16.33 512 (701.9) Table 1. ...

... 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. ...