Session Notes for v1704, CONTV1704 December 1, 2017, DOY 335 Prepared by David Gordon, NVI, Inc./GSFC =========================================================================== This is number 4 of 15 CONTV17 sessions. Participating stations are the VLBA stations and MEDICINA, SESHAN25, WETTZ13N, and YARRA12M. The frequency sequence is the same as in recent RV sessions. X-band: 8365.75, 8445.75, 8805.75, 8925.75 MHz S-band: 2232.75, 2262.75, 2352.75, 2372.75 MHz. Bandwidths are 8 MHz and 2-bit sampling is used. The frequency ending in .75 MHz is necessary at the VLBA stations. Therefore it will not be possible to monitor phase cals using the 10 kHz filters. Participation by SC-VLBA is doubtful, since their internet communications have been down since two hurricanes in September. However it was tagged along in case it is able to participate. There are 5-minute breaks scheduled for WETTZ13N every three hours for some multi-technique observations. These breaks are scheduled at: 02:55 - 03:00 UTC 05:55 - 06:00 UTC 08:55 - 09:00 UTC 11:55 - 12:00 UTC 14:55 - 15:00 UTC 17:55 - 18:00 UTC 20:55 - 21:00 UTC 23:55 - 00:00 UTC (schedule change) Observations begin at 2017 DOY 335 00:00:00 UTC (December 1) and nominally end at 335 23:55:00. There are two long (300 second) scans near the beginning. These are intended to be fringe finder scans for the VLBA correlator. The first few observations are: Source Start DURATIONS name yyddd-hhmmss Br Fd Hn Kp La Mc Mk Nl Ov Pt Sh Wn Yg Sc 0059+581 17335-000000| 79 40 81 167 167| NRAO530 17335-000000| 300 300 300 300 300 300 300 300 300 | 0738+491 17335-000328| 142 91 115 142 | 1849+670 17335-000704| 300 300 300 300 300 300 300 300 300 300 300 300 300| and the last few observations are: name yyddd-hhmmss Br Fd Hn Kp La Mc Mk Nl Ov Pt Sh Wn Yg Sc 1417+385 17335-234817| 169 170 85 85 170 168 82 | 0237-027 17335-235014| 221 111 60 130 221| 1342+662 17335-235024| 211 211 211 | NRAO530 17335-235216| 99 99 99 99 99 | 0544+273 17335-235305| 80 80 80 | Correlation: This experiment will be correlated at the LBO/VLBA on the LBO DiFX software correlator. Most geodesy stations will record three CONTV17 sessions on a single module. The modules must be shipped directly to the VLBA. We cannot do E-transfers for the CONTV17 sessions. Modules should be shipped to the following address: Socorro address for media shipping: VLBA Array Operations Center Long Baseline Observatory Attn: Juan Cordova 1003 Lopezville Road Socorro, NM 87801 U.S.A. Phone: 575-835-7000 Schedule Statistics: Br Fd Hn Kp La Mc Mk Nl Ov Pt Sh Wn Yg Sc Avg % obs. time: 62 62 59 64 62 54 60 61 63 63 58 66 77 36 61 % cal. time: 5 5 5 5 6 3 4 5 5 6 3 3 3 3 4 % slew time: 24 25 26 24 25 32 24 27 24 25 29 2 8 17 23 % idle time: 8 6 9 6 6 9 12 6 8 6 9 27 11 43 12 total # scans: 408 469 437 437 478 300 352 460 421 474 275 286 258 256 379 # scans/hour : 17 20 18 18 20 13 15 19 18 20 11 12 11 11 16 Avg scan (sec): 131 114 116 127 112 156 146 114 129 114 181 200 258 121 143 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 1.7 1.7 1.6 1.8 1.7 1.5 1.6 1.7 1.7 1.7 1.6 1.8 2.1 1.0 1.7 # OF OBSERVATIONS BY BASELINE | Br Fd Hn Kp La Mc Mk Nl Ov Pt Sh Wn Yg Sc Total -------------------------------------------------------------------------------- Br| 328 263 333 349 100 200 331 349 347 111 91 83 157 3042 Fd| 343 404 453 100 203 394 369 449 63 95 56 214 3471 Hn| 301 342 184 114 371 266 329 49 179 4 232 2977 Kp| 405 85 209 367 390 416 79 75 77 185 3326 La| 103 211 406 379 459 73 95 59 214 3548 Mc| 38 144 70 92 96 268 91 107 1478 Mk| 166 222 222 181 34 174 57 2031 Nl| 337 393 75 134 36 220 3374 Ov| 386 95 62 84 162 3171 Pt| 77 84 68 207 3529 Sh| 89 200 15 1203 Wn| 89 97 1392 Yg| 0 1021 Sc| 1867 Number of 2-station scans: 0 Number of 3-station scans: 186 Number of 4-station scans: 97 Number of 5-station scans: 64 Number of 6-station scans: 45 Number of 7-station scans: 65 Number of 8-station scans: 98 Number of 9-station scans: 131 Number of 10-station scans: 84 Number of 11-station scans: 39 Number of 12-station scans: 3 Number of 13-station scans: 4 Number of 14-station scans: 0 Total number of scans: 816 Total number of obs: 17715