[evla-sw-discuss] Illegal frequency setups

[Ken Sowinski]

On Mon, 18 Dec 2006, Barry Clark wrote:

> With a modest amount of extra work, I can either stop fringe rotation 
> for the VLA antennas, which will make things pretty clear what works and 
> what doesn't, or generate an Alert which can be used for flagging the 
> VLA antennas, which would leave their data there but flagged.

Alerts might have additional unwanted side-effects.  You have
to be sure to alert when a scan is begun that references the
bad VLALoIfSetup; not when the setup is created.  You have
to be sure to unalert once a scan with good frequency is
initiated.  You have to be careful not to alert for EVLA antennas
just because they have an associated VLALoIfSetup; this is probably
an issue for the flagger rather than the executor.

I would be inclined to leave it as just a message to the 'log'.


> It impresses me that an early useful application for script-controlled 
> subarraying would be to have all antennas looking at the same sources, 
> but the VLA antennas using a different frequency than the EVLA antennas 
> when they cannot tune to the frequency or band used by the EVLA 
> antennas.

An interesting thought.  obs2script is going to be getting
too smart for its own good before too long.