Session Notes for v1715, CONTV1715 December 12, 2017, DOY 346 Prepared by David Gordon, NVI, Inc./GSFC =========================================================================== This is the last 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 346 00:00:00 UTC (December 12) and nominally end at 346 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 0202+319 17346-000000| 56 40 50 73 43 49 52 73 41| 1639-062 17346-000000| 300 300 300 300 300 | 0237-027 17346-000202| 74 53 64 54 59 66 74 52| 0133+476 17346-000435| 114 95 114 97 107 114 114 107 107| 0059+581 17346-000703| 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 1342+662 17346-234328| 302 305 264 307 303 466 257 306 305 466 | 0646-306 17346-234337| 480 480 480 | 0119+041 17346-235022| 43 40 40 41 40 40 42 40 43| 2355-106 17346-235145| 53 51 40 56 51 42 56 53 | OJ287 17346-235318| 77 77 77 77 | 2255-282 17346-235322| 73 73 73 73 73 73 73 73 73| 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 60 64 61 52 62 59 64 61 57 66 75 41 60 % cal. time: 5 6 5 5 6 4 4 5 5 6 3 4 3 3 5 % slew time: 24 27 27 25 26 34 23 27 24 27 26 2 9 18 23 % idle time: 7 6 7 5 6 9 10 7 7 6 13 28 12 37 12 total # scans: 419 475 461 436 477 324 364 464 430 474 271 318 281 277 390 # scans/hour : 18 20 19 18 20 14 15 19 18 20 11 13 12 12 16 Avg scan (sec): 130 110 112 126 111 139 147 110 127 111 182 178 229 126 137 # 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 1.8 1.7 1.6 1.8 2.1 1.1 1.7 # OF OBSERVATIONS BY BASELINE | Br Fd Hn Kp La Mc Mk Nl Ov Pt Sh Wn Yg Sc Total -------------------------------------------------------------------------------- Br| 331 263 332 349 86 215 321 351 346 100 93 94 152 3033 Fd| 331 394 451 99 200 394 376 451 49 102 61 211 3450 Hn| 288 322 204 118 371 264 308 38 205 4 254 2970 Kp| 393 80 208 342 390 405 65 84 81 180 3242 La| 100 202 401 385 459 64 107 68 212 3513 Mc| 25 140 67 87 95 290 95 128 1496 Mk| 164 215 211 173 30 190 60 2011 Nl| 334 387 50 144 32 228 3308 Ov| 393 74 75 87 161 3172 Pt| 65 97 74 199 3482 Sh| 86 218 7 1084 Wn| 90 131 1534 Yg| 0 1094 Sc| 1923 Number of 2-station scans: 0 Number of 3-station scans: 213 Number of 4-station scans: 142 Number of 5-station scans: 67 Number of 6-station scans: 38 Number of 7-station scans: 54 Number of 8-station scans: 110 Number of 9-station scans: 129 Number of 10-station scans: 81 Number of 11-station scans: 34 Number of 12-station scans: 6 Number of 13-station scans: 2 Number of 14-station scans: 0 Total number of scans: 876 Total number of obs: 17656