EUROPE-57
              (EUROPEAN Geodetic VLBI Network session No. 57)
  
                        Schedule and Notes prepared by
       Axel Nothnagel, University of Bonn Geodetic Institute
  
Date of experiment:   2000 August 7
Nominal start time:   12h00 UT
Nominal end   time:   12h00 UT on August 8, 2000

Duration:             24 hrs 


Correlator:    Bonn

Participating stations:

Station     Code  
Matera       Ma
Noto         Nt
NyAlesund    Ny
Onsala       On
Wettzell     Wz
Yebes        Yb

Tape usage and scans to be observed: See summary of schedule below


Purpose
=======
The purpose of this experiment is to determine station coordinates and their
evolution in the southern part of the European geodetic VLBI network with the 
highest precision possible. 


Schedule
========
The schedule was produced by Axel Nothnagel using the automatic mode of sked.
The schedule was optimized for local sky coverage. 
The sky coverage for all stations were optimzed.
Due to correlator transition to Mark IV only 6 stations will be correlated.
The minimum SNR on all baselines is 35 at X band and 25 at S band.
SNR between YEBES and Onsala and Yebes and Matera are 
reduced to 25/20 to avoid extraordinary scan lengths. The smaller number of scans
as compared to recent other schedules results from the fact that Yebes was
used as a fully qualified station and not as a "tagalong" station. This
required longer scan lengths especially at Matera and Onsala.

The schedule was made without the early tape start feature. 

Wettzell was spared for IRIS-Intensive
between 220-1819 and 220-2023



Procedures
==========
The frequency sequence, EUR2-SX, used for the last EUROPE experiment will
also be used for this experiment.

     Channel        Sky Frequency
     =======        =============
               X-band

     1              8210.99  
     2              8220.99  
     3              8250.99  
     4              8310.99  
     5              8420.99  
     6              8500.99  
     7              8550.99  
     8              8570.99
  
               S-band

     1              2212.99  
     2              2227.99
     3              2237.99  
     4              2267.99  
     5              2287.99
     6              2292.99  


Correlation
===========
This experiment will be correlated at the Bonn Correlator.




   SKED Summary from file /diskB5/sked97/sched/euro57.skd for experiment EURO57  

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =   7.7
 Min =    .0   Max =   43.6 (Baseline Ny-On on CTA26   )   RMS =   7.8

 Total time:       1442 minutes ( 24.0 hours).

 Key:     Ma=MATERA     Nt=NOTO       Ny=NYALES20   On=ONSALA60   Wz=WETTZELL
          Yb=YEBES   

                  Ma  Nt  Ny  On  Wz  Yb  Avg
 % obs. time:     45  46  53  55  40  46  48 
 % cal. time:      2   2   2   1   1   1   2 
 % slew time:     15  29  12  14   6  17  16 
 % idle time:     36  21  32  27  50  33  33 
 # of tapes :     .7 2.6  .8 3.3  .6 2.8
 total # scans:  189 186 182 171 172 143 173 
 # scans/hour :    7   7   7   7   7   5  7.2
 Avg scan (sec): 209 217 253 283 203 284 241 

      # OF OBSERVATIONS BY BASELINE

   | Ma  Nt  Ny  On  Wz  Yb   StnTotal 
 --------------------------------------
 Ma|189 180 139 133 153 128      733 
 Nt|    186 132 126 149 127      714 
 Ny|        182 155 142 105      673 
 On|            171 127 114      655 
 Wz|                172 117      688 
 Yb|                    143      591 


 Number of  2-station scans:   49
 Number of  3-station scans:   31
 Number of  4-station scans:   40
 Number of  5-station scans:   34
 Number of  6-station scans:   87

 Total # of scans, observations:   241    2027


 Average baseline components for all observations
  Average XY     = 1851.
  Average XZ     = 1900.
  Average YZ     = 1412.
  Average length = 2175.