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Single Continuum

The Single Continuum interface essentially provides a shortcut to producing a spectral setup that covers the maximum possible bandwidth with the lowest possible spectral resolution. After entering a single frequency, usually in the sky frame, the OT will automatically create 4 2 GHz-wide TDM spectral windows, one in each baseband, and display them in the spectral window table. For bands that have 2SB receivers e.g. bands 3, 6 and 7, two will be placed in each sideband. For band 9, which is a DSB receiver, all four are placed in the same sideband.

The Representative Frequency will default to being the central (sky) frequency of the first spectral window. As with the spectral line interface, this can be changed, both by changing the spectral window and the frequency within this window. However, it is not possible to change the other parameters of the individual spectral windows. These can only be changed by editing the single value of sky or rest frequency.



The ALMA OT Team, 2013 Feb 27