Session Notes for v1709, CONTV1709 December 6, 2017, DOY 340 Prepared by David Gordon, NVI, Inc./GSFC =========================================================================== This is number 9 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 340 00:00:00 UTC (December 6) and nominally end at 340 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 0529+483 17340-000000| 44 80 45 40 44 102 102| 1639-062 17340-000000| 300 300 300 300 300 300 300 | 2309+454 17340-000307| 84 78 70 118 73 118 80| 2000+472 17340-000546| 40 55 40 53 63 63| 1803+784 17340-000733| 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 0059+581 17340-234434| 113 95 120 117 131 107 127 118 131| 0955+476 17340-234513| 40 40 40 | 0454+844 17340-234726| 195 197 349 205 198 349 193 199 199 | 0133+476 17340-235138| 167 167 167 167 167 167 167 197| OJ287 17340-235207| 138 138 138 138 | 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 61 57 64 62 55 62 59 62 62 58 68 77 39 61 % cal. time: 5 6 5 5 6 4 4 5 5 6 3 4 3 3 5 % slew time: 25 26 27 24 26 32 23 28 24 25 29 2 8 19 23 % idle time: 6 6 9 5 6 8 9 7 7 6 9 26 10 37 11 total # scans: 430 487 468 456 494 315 376 473 446 489 290 302 275 284 398 # scans/hour : 18 20 20 19 21 13 16 20 19 20 12 13 11 12 17 Avg scan (sec): 125 108 105 121 107 152 141 108 120 109 173 193 241 119 136 # 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 1.7 1.6 1.7 1.7 1.6 1.9 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| 360 284 361 372 101 202 339 375 365 116 99 89 175 3238 Fd| 333 428 474 99 221 387 397 476 76 105 69 216 3641 Hn| 299 339 203 139 392 283 328 48 204 3 267 3122 Kp| 427 93 218 365 413 433 85 93 81 187 3483 La| 103 225 398 408 481 84 104 71 217 3703 Mc| 28 163 88 99 87 275 87 127 1553 Mk| 169 225 228 199 30 193 68 2145 Nl| 348 387 72 158 30 237 3445 Ov| 404 97 85 86 172 3381 Pt| 84 99 76 209 3669 Sh| 75 217 15 1255 Wn| 82 126 1535 Yg| 0 1084 Sc| 2016 Number of 2-station scans: 0 Number of 3-station scans: 214 Number of 4-station scans: 104 Number of 5-station scans: 72 Number of 6-station scans: 44 Number of 7-station scans: 58 Number of 8-station scans: 92 Number of 9-station scans: 134 Number of 10-station scans: 97 Number of 11-station scans: 42 Number of 12-station scans: 7 Number of 13-station scans: 3 Number of 14-station scans: 0 Total number of scans: 867 Total number of obs: 18635