[GMVAtech 75] Fwd: C231A VLBA Observer's Log {External}

[Thomas Krichbaum]

Tsys problem at VLBA



-------- Weitergeleitete Nachricht --------
Betreff: 	Re: C231A VLBA Observer's Log {External}
Datum: 	Sat, 6 May 2023 10:16:44 -0600
Von: 	VLB operators <vlbaops at nrao.edu>
An: 	Thomas Krichbaum <tkrichbaum at mpifr-bonn.mpg.de>




On 5/6/23 10:06, Thomas Krichbaum wrote:
> So my conclusion is that when a VLBI scan is preceeded by a pointing 
> scan, the Tsys for LCP are corrupted. When there is no preceeding 7mm 
> pointing scan, then the Tsys are ok.
>
> I understand that you may not be able to fix this immediately, but it 
> is certainly a feature to look into after the session is over. 
> Apparently the DBE2 is not properly setup  for 3mm  Tsys measurement 
> when  a7mm pointing scans is preceeding.
>
Thank you for the information!  If this is the case, it's definitely not 
something the operators are able to fix, but perhaps Jay or Walter will 
be able to investigate it for us.

Betty Ragan, VLBA operator
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mpifr-bonn.mpg.de/pipermail/gmvatech/attachments/20230506/4d2a5676/attachment.html>