Hi Jose-Carlos -- The full correlation and FITS preparation for EG084A has finished, and I've just finished reviewing the results and preparing various plots for you to look at. The correlation used: 12 stations (EfWbJbOnNtTrSvZcBdShHhYs) 8 16MHz IFs (Upper/Lower sidebands; DC edges = 4942.49, 4974.49, 5006.49, 5038.49) 2 polarizations per IF 32 frequency points per IF/pol 2s integration time You can download the FITS files directly from the Data Archive as described below (you can arrange a password through me). Each individual FITS file is ~1.8GB; there are a total of 3 files (total 5 GB). EVN and Global VLBI Observations correlated at the EVN MkIV Data Processor at JIVE are now automatically calibrated via a pipeline process. You will receive email notification when the pipeline is complete. In particular, the a priori amplitude calibration table (and the associated, final ANTAB file), plus various other tables and plots will be available to download from the Pipeline page on the EVN archive. (Note that the unprocessed station- generated *.antabfs files under the Station Logfiles page of the archive are not directly usable.) A description of the pipelining process can be found at: www.evlbi.org/pipeline/user_expts.html The EVN data archive at JIVE is now a central location for obtaining the information you need in reviewing your project. You can find network feedback from the stations, standard plots from the correlation review done here prior to distribution, pipeline results, and the FITS files themselves. Contact your support scientist to arrange for a password with which you can download your FITS file(s) from the archive directly. See the EVN Users' Guide in www.evlbi.org for a link to the EVN Archive policy -- in short, data from sources you identified as target/private in pre-correlation e-mail will not be made public, nor will pipeline images be made from them, for one year from distribution. The archive can be accessed via: www.jive.nl/select-experiment (or via the menu items of the main jive page www.jive.nl). Once in this portal to the EVN data archive, you can click on your experiment in the pull-down menu in the "Select Experiment" window; then click on the link "Show Experiment" that will appear immediately below this. You will then see a new window for your experiment, from which you can select from the various sorts of data available from the menu row along the top: *) Station Feedback = information provided by the stations' VLBI friends about the conduct of the experiment *) Station Logfiles = sched-based files you uploaded to VLBEER, observing log-files from the stations, other unprocessed station-generated files. *) Standard plots = the plots described below in a variety of formats, a copy of this cover letter *) Pipeline = pipeline plots; the ANTAB, UVFLG, and CHFLAG files used in pipelining *) Fitsfiles = FITS files, plus an associated README in case there are multiple correlator passes each with its own set of FITS files. For AIPS versions starting with 31DEC13, you should set DIGICOR to -1 in FITLD (previously, it would do that automatically if the array was not VLBA). The proprietary period for data on the EVN archive is 1 year (the raw FITS files and pipeline results relating to sources you identified as "private" receive password protection during the proprietary period). For more details, see www.evlbi.org/user_guide/archive_policy.html Papers that result from your EVN observations should carry the standard EVN acknowledgment: The European VLBI Network is a joint facility of European, Chinese, South African and other radio astronomy institutes funded by their national research councils. This is a TNA-eligible project, so financial assistance would be available to a team member located within the EU or associated states for visiting JIVE or other EVN institutes in conjunction with analysis. Contact campbell@jive.nl for more details. -----------------o----------------- General comments (see experiment feedback link on Archive): Ef - Different delays (phase slopes across band in the cross-Np plots) and non-continuous phases across BBCs in LL channels. This is not the usual behavior for DBBC back-ends -- more typical is the bahavior seen in RR and in baselines Tr-Hh, Tr-Ys. On - winds permitted observing only about 40min; from the amp(t) plot variant showing only J2125, it seems only 5 scans of the phase-reference source were usefully observed. Without any scans of a fringe-finder, the pipeline will also include J2125 in the calibrators for BPASS. Sv - RCP channels dead. Zc,Bd - miss some part of the usual 18:30-21:30 UT time-range for domestic geo-intensive observations. Sh - amp(t) drops from ~15:30-16:00 -----------------o----------------- PLOTS All plots discussed here were made while the data were still in aips++ Measurement Sets prior to conversion to FITS files. The station/IF numbering is 0-based in the aips++ plots, but 1-based in the FITS data (1-based numbering used below). The names of the standard plots are: eg084a-weight.ps station weight vs. time eg084a-auto-[1-3].ps station autocorrelation vs. freq eg084a-cross-[1-3][a,p].ps baseline amp/phs vs. freq eg084a-ampphase-[a,p][2].ps Ef-* baseline amp/phs vs. time The auto and cross plots show 1 minute of data from scan 2 ([1], 3C345) and scan 175 ([2], 3C454.3), with an additional plot for all of scan 15 ([3], J2125+2442) in order to include On in at least one of these plots, as it had no data in any fringe-finder. The ampphase plots show amp [a] and phase [p], each with a variant as described below. Specific points in regard to the various plots are below. (a) WEIGHT plots The plots shows the weights for all IFs/pols per station, with each 2s integration plotted as a separate ".". The IF/pol color-coding is: IF1/RR = red IF1/LL = blue IF2/RR = cyan IF2/LL = green IF3/RR = pink IF3/LL = med.grey IF4/RR = brown IF4/LL = purple IF5/RR = teal IF5/LL = yellow IF6/RR = steel blue IF6/LL = lt.grey IF7/RR = black IF7/LL = orange IF8/RR = lt.green IF8/LL = lt.purple Before making the FITS files, I flagged weights at 0.6 (integrations below this are in the FITS files, but with negative weights). (b) AUTOCORRELATION SPECTRA [*auto*] plots The plots show data from the scans listed above. The IFs for each station are separted by the vertical dashed lines. Since each station self-scales, y-axes may not go down to zero. The polarization color-coding is RR=red, LL=blue. The data have already been corrected for the 2-bit van Vleck compensation, so ACCOR shouldn't be run. It should be okay to use autocorrelations for bandpass corrections or to use ACFIT. (c) BASELINE SPECTRA [*cross*] plots The baseline vs. frequency plots show vector-averaged amplitude and phase for all baselines for same the time ranges as the autocorrelation plots, with with amp & phase going to separate plots denoted by the 'a' or 'p' following the scan identifier, using the same baseline lay-out on the page. IFs per baseline are separated by the dashed vertical lines. The polarization color-coding is RR=red, LL=blue. These plots give the clearest view of the low-response channels, such as Sv's dead RCP channels. Nt also exhibits some uneven amplitudes across LCP channels. (d) AMP/PHASE(t) [*ampphase*] plots The baseline vs. time plots show amplitude and phase for non-target scans, with amp & phase going to separate plots, denoted by the 'a' or 'p' following 'ampphase-'. Each 2s integration is plotted as a separate ".", with the middle 80% of the band used for vector-averaging over frequency. The plots use the same IF/pol color-coding as in the weight plots. There is a variant of each plot denoted by the "2" after the ["a"|"p"]: for amp(t), plots only J2125+2442 (to avoid the fringe-finders dominating the y-axis scale) and for phase(t), plots only pol=LL (since Sv had no response in RCP and this masks the trace for the channels with signal). The color-coding for this LL-only phase(t) plot is: IF1/LL = red IF2/LL = blue IF3/LL = cyan IF4/LL = green IF5/LL = pink IF6/LL = med.grey IF7/LL = brown IF8/LL = purple