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.