NGC 2903 Drift Observations . Observer's Log . Please have a terminal window open as user NGC 2903. ... Select today's date: day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Month January February March April May June July August September October November December Year 2004 2005 . ... Write your comments about today's run, problems, RFI, etc.. ... To submit these entries, please type the last four . ... Last Update: December 4, 2004 . ...

... 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. ...