2nd GTG Meeting Ventspils May 22nd 2017

Meeting page:

http://evntog2017.venta.lv/

Agenda

1. Local Arrangements/Opening Remarks (NN)
2. Agenda
3. Minutes from last meeting
   • AIs from last meeting
4. Reports from the stations (all)
   • Metsähovi (Kallunki) 10 min
   • Pico Veleta (Sanchez)
5. Report from correlator
   • Session 1/2016 (Alef)
   • Session 2/2016 (Alef)
   • Session 1/2017 (preliminary results) (Rottmann)
   • Changes in procedures/personnel (Rottmann)
6. GMVA observations & operations
   • News on setting-up and running observations (Bach, all))
   • Communication during observing? (Rottmann)
   • Changes in scheduling (Fringe tests, calibration runs, regular test runs)
   • repository for common GMVA tools?
7. GMVA calibration - Discussion session
   • necessary steps to improve the calibration quality
     • weather, TPI/TPICAL/CALTEMP, chopper wheel
   • antab file generation:
   • determine K/Jy conversion on e.g. bright planet (in gaps?)
   • gain curves, new gain curves for next session
   • opacity
   • plots of TSYS, weather, tau (e.g. Ef tsm plots)
   • calibration quality control at the correlator
   • store all files on Bologna server
   • additional topics
8. ALMA and GMVA
   • Overview of the current state
     • sampler stats and AC after each scan needed
   • calibration with full-band mode, ANTAB (DBBC2) (Bach, all)
9. AOB:
   • control and monitoring
   • Going to 4Gbps?
   • GMVA block schedule - comments?
   • Next meeting?
10. closing remarks

Presentations

J. Kallunki: Station report Metsähovi

S. Sanchez: Station report Pico Veleta

W. Alef: Correlation report spring / fall 2016 (presented from the correlation wiki pages)

H. Rottmann: Preliminary Correlation Report (Spring 2017)

Minutes

Action Items

1. (Bach) Compile and publish station  pre-check list.          open
2. (All stations): invesitgate possibility for front-end tone injection.        partly open: yebes
3. (Bach, Ef): improve Effelsberg bandpass @3mm         open
4. (Himmwich, Bach, Rottmann): Find solution for creating working FS procedures from vex when using PFB flexmode       open
5. (Alef, Rottmann): Obtain and circulate information from Tuccari on additional requirements for running in full_auto mode.   obsolete
6. (Alef): Arrange with GMVA scheduler for inclusion of calibration and fringe check blocks (prior to UT 16:00)   done
7. (Alef): Arrange with GMVA scheduler for extension of scan length & gaps to 10 minutes.    done
8. (Rottmann, de Vicente): Compile information from stations about software tools in use. Setup software repository.       open
9. (Krichbaum, stations): increase preob time from 10s to 30s.        open
10. (Alef, Rottmann, Bach, Tuccari): Investigate Tsys calculation for full_auto mode    obsolete
11. (On, Mh): Measure gain curve before fall 2017 session.     open
12. (de Vicente): Talk to J. Cernicharo about using ATM code for tau calculation      done
13.  (Krichbaum): distribute document describing station calibration procedure on the GMVATech exploder.      open
14. (Correlator): establish calibration quality control at correlator         open
15. (de Vicente): arrange for SiO maser observations approx. 1 month before GMVA session.     done