EUROPE-94
(EUROPEAN Geodetic VLBI Network session No. 94)
2008 July 08/09
doy 190-191
Institute for Geodesy and GeoInformation
of the University of Bonn, Germany
Nominal start time: 2008-190-1730 UT
Nominal end time: 2008-191-1730 UT
Duration: 24 hrs
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Note: This is an updated schedule with the following changes:
- reduced elevation slew rate for Eb (10 deg/min)
- Bd and Ys both removed from schedule (as they are
not available on doy 190/191)
Changes made: July 2, 2008 (dbb)
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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 optimized for local sky coverage. Scans are scheduled to have
scan length purely according to SNR limits. No time second modulo is applied.
The sky coverage for all stations were optimized.
The minimum SNR on all baselines is at X band and at S band different.
e-VLBI Transfer
===============
We will try to transfer data via eVLBI from Mh, On and Wz !
Session Notes
=============
Parameter values for experiment EURO94
Experiment description: EUROPE-94
Scheduler: IGG/am Correlator: BONN
Nominal start: 2008-190-17:30:00 Nominal end: 2008-191-17:30:01
Current yyyyddd: 2008190 (2008.52) ( 14656 MJD, TUES 8JUL.)
Greenwich sidereal time: 12:38: 0.00 (17:30: 0 UT)
Sun's RA and DEC: 7h 13.3m 22d 22.1
===========================================================
There are no observations for Wettzell from 18:20 U.T.
to 19:40 U.T. Wettzell will participate in the
intensive session during this 1.5 hour period.
===========================================================
First observations
Observation listing from file euro94.skd for experiment EURO94
Source Start DURATIONS
name yyddd-hhmmss Sm Eb Mh Nt On Wz
4C39.25 08190-173000| 30 30 30 30 30 30|
0552+398 08190-173605| 30 36 36 30|
================================================
Last observations
1741-038 08191-172424| 30 30 30 30 30|
3C274 08191-172742| 129 30 129 59 123 55|
End of listing.
================================================
Average number of obs. per baseline per source(normalized by up-time) = 8.9
Min = .0 Max = 47.8 (Baseline Mh-Nt on 1741-038) RMS = 13.4
Total time: 1440 minutes ( 24.0 hours).
Key: Sm=CRIMEA Eb=EFLSBERG Mh=METSAHOV Nt=NOTO On=ONSALA60
Wz=WETTZELL
Sm Eb Mh Nt On Wz Avg
% obs. time: 28 11 24 21 25 19 21
% cal. time: 3 3 3 3 3 3 3
% slew time: 37 67 40 41 16 9 35
% idle time: 31 17 33 34 55 67 40
total # scans: 279 276 257 294 269 290 277
# scans/hour : 12 12 11 12 11 12 12
Avg scan (sec): 86 36 80 60 79 58 66
Total GBytes: 380 178 368 319 384 301 322
Total GB(M5): 386 158 327 284 341 267 294
Total number of tapes: .4 Total GBytes (M5) recorded: 1763.6
# OF OBSERVATIONS BY BASELINE
| Sm Eb Mh Nt On Wz StnTotal
----------------------------------------
Sm| 222 201 240 205 232 1100
Eb| 198 229 209 218 1076
Mh| 226 248 230 1103
Nt| 241 269 1205
On| 246 1149
Wz| 1195
Number of 2-station scans: 48
Number of 3-station scans: 46
Number of 4-station scans: 48
Number of 5-station scans: 63
Number of 6-station scans: 154
Total # of scans, observations: 359 3414
===========================================================
Recording mode
Name Code
EUR2-SX SX
Recording mode setup for:
EFLSBERG NOTO ONSALA60 WETTZELL
Mode Tot.Rate Tot.BandW #chan #bits Barrel
Mk341:2 128.000 Mbits 64.000 MHz 14 1 16
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
4.00 MHz 1 16(*2) 32 80.00
X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz
S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz
Effective number of channels recorded per sub-pass
X S Total
10.000 6.000 16.000
Recording mode setup for:
CRIMEA
Mode Tot.Rate Tot.BandW #chan #bits Barrel
C 112.000 Mbits 56.000 MHz 14 1 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
4.00 MHz 2 14(*0) 28 270.00
X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz
S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz
Effective number of channels recorded per sub-pass
X S Total
8.000 6.000 14.000
Recording mode setup for:
METSAHOV
Mode Tot.Rate Tot.BandW #chan #bits Barrel
VLBA1:2 128.000 Mbits 64.000 MHz 14 1 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
4.00 MHz 1 16(*2) 32 80.00
X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz
S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz
Effective number of channels recorded per sub-pass
X S Total
10.000 6.000 16.000
===========================================================
SNR Targets
Minimum SNR by baseline for multi-baseline scans
X-band (margin 0) S-band (margin 0)
Sm Eb Mh Nt On Sm Eb Mh Nt On
Eb 23 Eb 25
Mh 20 20 Mh 23 23
Nt 23 30 20 Nt 25 27 23
On 27 27 20 27 On 25 25 23 25
Wz 23 30 20 30 27 Wz 25 27 23 27 25