Next: Survey Simulations Up: Minutes of the 1st Previous: RFI at Arecibo . GALFA is really a consortium of 3 separate sub-consortia centered around different science topics: Galactic HI, Continuum and Recombination lines. ... Continuum survey . ... Recombination lines . 12 H lines are found in the ALFA band, from n=163 to 174. ... At the same time, you could make an L-band map of SNR in OTF mode, basketweaving scans in RA and in Dec (the HI map would require more time than the continuum data). ...

... 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. ...