EUROPE-55
              (EUROPEAN Geodetic VLBI Network session No. 56)
  
                        Schedule and Notes prepared by
       Axel Nothnagel, University of Bonn Geodetic Institute
  
Date of experiment:   2000 March 16
Nominal start time:   12h00 UT
Nominal end   time:   12h00 UT on March 17, 2000

Duration:             24 hrs 


Correlator:    Bonn

Participating stations:

Station     Code  
CRIMEA       Sm
Matera       Ma
Medicina     Mc
Ny Alesund   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 northern 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, except Matera, were optimzed.
Due to correlator transition to Mark IV only 6 stations will be correlated.
Matera is tagged along as a seventh station. Matera tapes will only be shipped and
correlated if another stations encounters difficulties.
The minimum SNR on all baselines is 35 at X band and 25 at S band.
SNR between YEBES and CRIMEA as well as Onsala and CRIMEA are 
reduced to 25/20 to avoid extraordinary scan lengths.

The schedule was made without the early tape start feature. 

Wettzell was spared for IRIS-Intensive
between 076-1628 and 076-1831



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/euro55.skd for experiment EURO55  

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =   8.9
 Min =    .0   Max =   27.8 (Baseline On-Wz on 1334-127)   RMS =   7.8

 Total time:       1441 minutes ( 24.0 hours).

 Key:     Sm=CRIMEA     Ma=MATERA     Mc=MEDICINA   Ny=NYALES20   On=ONSALA60
          Wz=WETTZELL   Yb=YEBES   

                  Sm  Ma  Mc  Ny  On  Wz  Yb  Avg
 % obs. time:     35  51  29  49  54  39  45  43 
 % cal. time:      2   2   2   2   2   2   2   2 
 % slew time:     34  14  32  13  17   8  21  20 
 % idle time:     27  31  35  35  25  49  31  33 
 # of tapes :    1.9  .8 1.5  .7 3.0  .6 2.5
 total # scans:  204 210 228 204 221 210 178 207 
 # scans/hour :    8   8   9   8   9   8   7  8.7
 Avg scan (sec): 151 212 110 208 211 163 220 182 

      # OF OBSERVATIONS BY BASELINE

   | Sm  Ma  Mc  Ny  On  Wz  Yb   StnTotal 
 ------------------------------------------
 Sm|204 172 180 145 155 153 133      938 
 Ma|    210 195 150 172 173 148     1010 
 Mc|        228 149 175 181 166     1046 
 Ny|            204 180 147 116      887 
 On|                221 161 140      983 
 Wz|                    210 148      963 
 Yb|                        178      851 


 Number of  2-station scans:   58
 Number of  3-station scans:   35
 Number of  4-station scans:   37
 Number of  5-station scans:   29
 Number of  6-station scans:   53
 Number of  7-station scans:   89

 Total # of scans, observations:   301    3339


 Average baseline components for all observations
  Average XY     = 1820.
  Average XZ     = 1556.
  Average YZ     = 1457.
  Average length = 2042.