[GMVAtech 71] Re: Draft GMVA Block Schedule for Session 2023/I starting on May 04

[Thomas Krichbaum]

Hi

I haven't thought deeply about this, since it requires
coordination with all stations, including ALMA, GLT, LMT.

I leave it to Helge to answer this and I cc to gmvatech.

Of course the band should include the standard sky frequency range
86012.00 -> 86524.00  MHz.

Since the wideband recording is an untested add-on, please make sure that
standard setup, circular polarisation performance and data transfer is not
affected in any bad way. We don't want to corrupt approved proposals.


Helge: The larger bandwidth may affect polarisation. I guess the circular polarizers
are calculated for optimal performance within our 512 MHz band. I don't know
how the cross-polarisation changes outside this band. Owing to limitations at
the correlator, we should avoid polarisation conversion from other stations than
ALMA and LMT.



kind regards, Thomas



On 13/03/2023 13:29, Jun Yang wrote:
> Hi Eduardo, Thomas and Helge,
> 
> What is the observing frequency range at the 16-Gbps stations in the upcoming GMVA session? Onsala may also run the 16-Gbps 
> observations via our DBBC3 backend in parallel.
> 
> 
> Regards,
> 
> Jun
> 
>> On 9 Mar 2023, at 22:09, Eduardo Ros <ros at mpifr-bonn.mpg.de <mailto:ros at mpifr-bonn.mpg.de>> wrote:
>>
>>
>>                  GMVA Session   May 2023
>>                  =======================
>>
>>
>>    To:   GMVA Principal Investigators and Observatory Staff
>>
>>
>> Please find attached Version 0.6 of the Block Schedule for the coming
>> GMVA 3mm VLBI session May 2023. The projects which are scheduled
>> have been selected by the VLBA and European GMVA Schedulers, based on
>> the proposal reviews at NRAO and other GMVA observatories.
>>
>>
>> PI's role in schedule making
>> ==========================
>> Thomas Krichbaum (tkrichbaum at mpifr-bonn.mpg.de <mailto:tkrichbaum at mpifr-bonn.mpg.de>) will make an
>> integrated observing schedule for the session.
>>
>> **  PIs are asked to contact him, to specify to what extent they wish
>> **  to be involved in designing the schedule for the section of the
>> **  session when their project is being observed.
>>
>>      ===> PIs should contact him at the latest by 25 MARCH
>>                                                   ========
>>
>>  **************************************************************
>>  *  PIs of projects with non-standard set-ups or frequencies  *
>>  *  should contact Thomas and specify these precisely.        *
>>  **************************************************************
>>
>> The final, integrated schedule for the session will be made available
>> to the GMVA observatories by 06 APRIL, this time exceptionally (due
>> to the planning of the coming EHT session in April) four weeks
>> before the start of the session on 04 MAY
>>                                    ======
>>
>>
>> Participating telescopes
>> ========================
>> Unless otherwise indicated on the schedule, the participating European
>> telescopes ("Eu" on the schedule) are:
>>
>>    Effelsberg   (Eb)
>>    IRAM NOEMA   (Pb)
>>    Yebes-40m    (Ys)
>>    Onsala-20m   (On)
>>    Metsaehovi   (Mh) (on a best-effort basis)
>>    Greenland T. (Gl) (on a best-effort basis)
>>
>>
>> The telescopes available at the VLBA are:
>>
>>    VLBA_NL
>>    VLBA_FD
>>    VLBA_LA
>>    VLBA_PT
>>    VLBA_KP
>>    VLBA_BR
>>    VLBA_OV
>>    VLBA_MK
>>
>> Telescopes of the Korean VLBI Network (KVN) will take part in projects:
>>
>>    MP005A
>>    MI004
>>    MN004A
>>    MR014A
>>    POLCAL3
>>    MJ004
>>    MR014B
>>    MP008
>>    MK025
>>    MB019C
>>    MR014C
>>    MP005B
>>
>> The GBT will take part in projects:
>>
>>    MP005A
>>    MI004
>>    MP008
>>    MK025
>>    MP005B
>>
>> ALMA will take part in projects:
>>
>>    MP005A (2023.1.00750.V)
>>    MI004  (2023.1.01054.V)
>>    MN004A (2023.1.00366.V)
>>    MN004B (2023.1.00366.V)
>>    MN004C (2023.1.00366.V)
>>    MJ004  (2023.1.00853.V)
>>    MK025  (2023.1.00710.V)
>>    MP005B (2023.1.00750.V)
>>
>> The LMT will participate on a best-effort basis in experiments with a
>> preference for night scheduling (04-13 UT in May 2023):
>>
>>    MP005A (2023-S1-MX-1)
>>    MI004  (2023-S1-MX-3)
>>    MR014A (2023-S1-US-17)
>>    MJ004  (2023-S1-MX-2)
>>    MR014B (2023-S1-US-17)
>>    MR014C (2023-S1-US-17)
>>    MP005B (2023-S1-MX-1)
>>    MP008  (2023-S1-MX-23, potentially with daytime observations)
>>
>> ATCA and Mopra will participate on a best-effort basis for experiments:
>>    MP005A
>>    MI004
>>    MJ004
>>    MP005B
>>
>> Haystack is expected to participate on a best-effort basis for experiments:
>>
>>    MI004
>>    MR014A
>>    MR014B
>>    MR014C
>>
>> 7mm observations, potentially including Noto for common coverage with
>> the VLBA, have been requested for experiments:
>>    MB019B
>>    MB019C
>>
>>
>> Recording mode
>> ==============
>>
>> All projects are aimed to be recorded at GMVA observatories using the
>> GMVA 4 Gbps DDC mode, for the stations which can support that.
>>
>> Several projects have requested a subset of the antennas to observe
>> at 16 Gbps, this is being implemented.
>>
>> All data will be correlated at the Bonn DiFX software correlator.
>> Available disk capacity will determine the fraction of the scheduled
>> time which can be spent recording data.  Helge Rottmann (Chair of the
>> GMVA Technical Group) will make a final decision on this when all the
>> constraints have been considered.
>>
>>
>> Polarization
>> ============
>> All observations will be recorded using dual LHC+RHC polarization at
>> those telescopes where this is possible.
>>
>>
>> General considerations
>> ======================
>>
>> A copy of the block schedule is available on the MPIfR FTP server in
>> case minor mistakes are fixed.  Major changes and the final schedule will be
>> communicated via email.  This is the address:
>> ftp://ftp.mpifr-bonn.mpg.de/outgoing/ros/GMVA/MMschedule_2023_1.asc 
>> <ftp://ftp.mpifr-bonn.mpg.de/outgoing/ros/GMVA/MMschedule_2023_1.asc>
>> ftp://ftp.mpifr-bonn.mpg.de/outgoing/ros/GMVA/MMschedule_2023_1.pdf 
>> <ftp://ftp.mpifr-bonn.mpg.de/outgoing/ros/GMVA/MMschedule_2023_1.pdf>
>>
>>
>> ==> Please contact me (ros at mpifr-bonn.mpg.de <mailto:ros at mpifr-bonn.mpg.de>) IMMEDIATELY if you
>>    find any mistakes or problems with this version of the schedule.
>>
>>
>> Eduardo Ros
>>
>> (European GMVA Scheduler)
>>
>>
>>
>>
>> <MMschedule_2023_1.asc><MMschedule_2023_1.pdf>
> 

-- 
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