January 8, 1999 Karen Thomas, Media Relations Coordinator, (403) 220-5727 U of C Astronomers Open New Window Into The Lives of Stars Steven Gibson and Russ Taylor, astronomers in the University of Calgary's Department of Physics and Astronomy, have used radio telescopes to gain a whole new vantage point in observing the first step in the formation of new stars. ... The Sun is in one of these arms, and the hydrogen clouds that the U of C researchers have found are in the next arm out. ...

... 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. ...