EUROPE-61
              (EUROPEAN Geodetic VLBI Network session No. 61)
  
                        Schedule and Notes prepared by
       Axel Nothnagel, University of Bonn Geodetic Institute
  
Date of experiment:   2001 September 03
Nominal start time:   12h00 UT
Nominal end   time:   12h00 UT on September 04, 2001

Duration:             24 hrs 


Correlator:    Bonn

Participating stations:

Station     Code  
Crimea       Sm
DSS65        65
Matera       Ma
Medicina     Mc
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. Simeiz and Yebes are tagged along.

The minimum SNR on all baselines is 35 at X band and 25 at S band.
SNR between Onsala and NyAlesund as well as Onsala and Wettzell are
reduced to 25/20 to avoid extraordinary scan lengths.

The schedule was made with the early tape start feature. 

Wettzell was spared for IRIS-Intensive between 246-1740 and 246-1936.
DSS65 is only scheduled for 246-1200 247-0840


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              8580.99
  
               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 euro61.skd for experiment EURO61  

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =  10.5
 Min =    .0   Max =   54.5 (Baseline Ny-On on CTA26   )   RMS =   9.3

 Total time:       1437 minutes ( 24.0 hours).

 Key:     Sm=CRIMEA     65=DSS65      Ma=MATERA     Mc=MEDICINA   Ny=NYALES20
          On=ONSALA60   Wz=WETTZELL   Yb=YEBES   

                  Sm  65  Ma  Mc  Ny  On  Wz  Yb  Avg
 % obs. time:     29  15  53  27  48  47  39  36  37 
 % cal. time:      1   2   2   3   2   2   2   2   2 
 % slew time:     22  42  19  36  14  17   9  21  22 
 % idle time:     46  39  24  33  34  31  48  40  37 
 # of tapes :    1.7  .3  .8  .5  .8 2.7  .6 2.1
 total # scans:  137 202 256 265 247 244 245 178 221 
 # scans/hour :    5   8  10  11  10  10  10   7  9.2
 Avg scan (sec): 184  67 178  89 169 168 140 174 146 

      # OF OBSERVATIONS BY BASELINE

   | Sm  65  Ma  Mc  Ny  On  Wz  Yb   StnTotal 
 ----------------------------------------------
 Sm|137  95 131 130 111 110 123  99      799 
 65|    202 181 194 154 153 168 149     1094 
 Ma|        256 246 204 205 228 166     1361 
 Mc|            265 203 211 233 175     1392 
 Ny|                247 218 196 145     1231 
 On|                    244 199 151     1247 
 Wz|                        245 158     1305 
 Yb|                            178     1043 


 Number of  2-station scans:   40
 Number of  3-station scans:   19
 Number of  4-station scans:   16
 Number of  5-station scans:   48
 Number of  6-station scans:   52
 Number of  7-station scans:   83
 Number of  8-station scans:   55

 Total # of scans, observations:   313    4736


 Average baseline components for all observations
  Average XY     = 1806.
  Average XZ     = 1552.
  Average YZ     = 1431.
  Average length = 2028.