Session Notes for v1712, CONTV1712 December 9, 2017, DOY 343 Prepared by David Gordon, NVI, Inc./GSFC =========================================================================== This is number 12 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 343 00:00:00 UTC (December 9) and nominally end at 343 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 0016+731 17343-000000| 40 46 42 42 40 42 51 51| 1639-062 17343-000000| 300 300 300 300 300 300 | 2309+454 17343-000154| 230 217 235 225 212 238 238 210| 1849+670 17343-000704| 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 1538+149 17343-234739| 341 159 326 154 153 281 341 | 0322+222 17343-235004| 73 51 81 60 60 81 | 0403-132 17343-235221| 140 140 140 140| 2013+163 17343-235334| 70 70 70 | NRAO530 17343-235408| 40 40 40 40 40 40 40 | 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: 63 61 58 64 62 52 60 59 63 62 58 65 77 44 61 % cal. time: 5 6 6 5 6 4 5 6 5 6 4 4 4 4 5 % slew time: 24 26 27 24 25 33 25 26 24 25 28 2 9 22 23 % idle time: 6 6 8 6 6 10 9 8 7 6 10 28 9 29 11 total # scans: 438 492 487 459 496 341 391 488 452 495 311 341 309 318 415 # scans/hour : 18 21 20 19 21 14 16 20 19 21 13 14 13 13 17 Avg scan (sec): 125 107 103 120 107 132 133 104 120 107 160 165 215 120 129 # 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 1.4 1.7 1.6 1.7 1.7 1.6 1.8 2.1 1.2 1.7 # OF OBSERVATIONS BY BASELINE | Br Fd Hn Kp La Mc Mk Nl Ov Pt Sh Wn Yg Sc Total -------------------------------------------------------------------------------- Br| 345 267 359 359 91 220 337 373 362 109 89 100 175 3186 Fd| 327 420 480 104 219 399 395 474 67 93 75 212 3610 Hn| 293 322 240 105 387 266 317 38 226 1 295 3084 Kp| 426 81 213 368 419 433 82 73 90 192 3449 La| 100 227 398 407 484 74 90 82 207 3656 Mc| 23 160 70 95 81 304 78 162 1589 Mk| 157 231 234 211 24 222 64 2150 Nl| 344 388 54 149 32 254 3427 Ov| 413 93 66 100 174 3351 Pt| 79 85 87 205 3656 Sh| 90 246 14 1238 Wn| 92 152 1533 Yg| 0 1205 Sc| 2106 Number of 2-station scans: 0 Number of 3-station scans: 222 Number of 4-station scans: 141 Number of 5-station scans: 82 Number of 6-station scans: 53 Number of 7-station scans: 76 Number of 8-station scans: 93 Number of 9-station scans: 133 Number of 10-station scans: 91 Number of 11-station scans: 40 Number of 12-station scans: 2 Number of 13-station scans: 1 Number of 14-station scans: 0 Total number of scans: 934 Total number of obs: 18620