[GMVAtech 80] Re: [astrovlbi] preliminary schedules for next GMVA run

[Thomas Krichbaum]

Dear Cristina,

thanks for your suggestion. It may be difficult to find a suitable time slot for this, since not
all European stations are technically ready for this. The actual time slots are already fixed. I am not sure
how flexible other stations would be.

We have to be a bit careful for recabling, so that the science portion of the GMVA run is not affected
by possible errors when switching back to 'normal' mode. So such a test could be performed best
at the end/after the GMVA run.

I guess we would need a little bit of preparation and discussion. IRAM and Effelsberg do not have a 3 frequency
capability. Which stations do you have in mind ? I also do not have a setup file for three frequencies.

kind regards, Thomas

On 14/04/2025 15:35, Cristina García Miró wrote:
> Dear Thomas and Helge,
> 
> During recent FPT group meeting I proposed to include a DBBC3 fringe test to support incoming tri-band observations during this GMVA session.
> 
> Many colleagues were interested, as Helge can recall.
> 
> Would it be possible to include such a test?
> 
> Many thanks,
> Cristina
> 
> ----- Original Message -----
> From: "Thomas Krichbaum" <tkrichbaum at MPIFR-BONN.MPG.DE>
> To: "Lista de distribución de correo para VLBI Astronómico" <astrovlbi at LIST.OAN.ES>
> Sent: Friday, 4 April, 2025 18:14:29
> Subject: [astrovlbi] preliminary schedules for next GMVA run
> 
> Dear colleagues,
> 
> for the next GMVA campaign (starting Apr. 24) almost final schedules are ready. Could you please take a look.
> We just learned that GBT may be not available on Apr. 24/25, discussion are ongoing. It is
> probably to late to change the schedules so we have to live with it.
> 
> The latest version of the Block schedule is available from the GMVA webpage:
> https://urldefense.com/v3/__https://www3.mpifr-bonn.mpg.de/div/vlbi/globalmm/__;!!D9dNQwwGXtA!UM3opzABvPspMz8AujYv_qWEtIQG0uHl1P3ylMVV6wxWN_X_9tH0mxCcsUCO046xLwna74uTLCJEzX0O1TsMCxcrDELe$
> --> Sessions -> Apr 24 - 28, 2025 -> Block Schedule
> 
> (or via this direct link: https://urldefense.com/v3/__https://www3.mpifr-bonn.mpg.de/div/vlbi/globalmm/sessions/apr25/MMschedule.asc__;!!D9dNQwwGXtA!UM3opzABvPspMz8AujYv_qWEtIQG0uHl1P3ylMVV6wxWN_X_9tH0mxCcsUCO046xLwna74uTLCJEzX0O1TsMC_rpZyaT$ )
> 
> I hope that there are no major issues.
> 
> We plan to distribute the final schedules before April 18, 2025.
> 
> Please fetch the schedules from here:
> 
> https://urldefense.com/v3/__ftp://ftp.mpifr-bonn.mpg.de/outgoing/p459kri/3mmapr25/sched__;!!D9dNQwwGXtA!UM3opzABvPspMz8AujYv_qWEtIQG0uHl1P3ylMVV6wxWN_X_9tH0mxCcsUCO046xLwna74uTLCJEzX0O1TsMCyGHghu6$
> 
> There are 6 portions:
> 
> c251a   7mm no IRAM
> f251a   3mm Fringe test Europe only
> mj008   3mm VLBA+ALMA+Ap+GBT, no Europe
> c251b   3mm global
> c251c   3mm global no ALMA
> c251d   3mm global
> 
> I also made a tarball so that you may fetch all portions in one go, from here:
> ALL-GMVA2025.v1.tgz
> 
> (wget https://urldefense.com/v3/__ftp://ftp.mpifr-bonn.mpg.de/outgoing/p459kri/3mmapr25/sched/ALL-GMVA2025.v1.tgz__;!!D9dNQwwGXtA!UM3opzABvPspMz8AujYv_qWEtIQG0uHl1P3ylMVV6wxWN_X_9tH0mxCcsUCO046xLwna74uTLCJEzX0O1TsMC1dKFHIl$ )
> 
> 
> kind regards, Thomas
> 
> PS: As in previous session we also provide files *.vex_noptg and *.sum_notpg
> which do not include the (very many) SiO maser pointing scans, which are only needed
> by the VLBA. The files *.sum_notpg are better suited for human readability.
> 
> 
> kind regards, Thomas
> 
> 

-- 
Dr. Thomas P. Krichbaum
Max-Planck-Institut fuer Radioastronomie
Auf dem Huegel 69
D-53121 Bonn / Germany

Mail: tkrichbaum at mpifr-bonn.mpg.de
Tel.: (Germany +49)-228-525-295
Web : http://www.mpifr-bonn.mpg.de/research/vlbi