. Name . Last modified . Size . Description . Parent Directory . - . 4102_Automatic_Shutter_Mechanism.doc . 22-Jun-2011 07:15 . 1.0M . Controller_Components/ . 03-Apr-2013 11:23 . - . MRLB-ALFAShutterprop06172011.pdf . 22-Jun-2011 07:16 . 115K . Software/ . 26-Mar-2013 09:32 . - . alfashutter.html . 25-Oct-2013 10:36 . 3.2K . measurements/ . 25-Oct-2013 10:34 . - . Apache/2.2.3 (CentOS) Server at www.naic.edu Port 80

... 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. ...