COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: Study of a potential gravitational lens system at milliarcsecond scales Exp. Code: EA075 Schedule Version: 3.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Diego Alvarez-Ortega Address: Institute of Astrophysics - FORTH N. Plastira 100 Vassilika Vouton Greece Phone: +302810394236 EMAIL: dalvarez@physics.uoc.gr Fax: Phone during observation: +34615500245 Observing mode: vlbi Notes: COVER LETTER: Schedule for URUMQI (Code Ur ) Page 2 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- Next scan frequencies: 22216.00 22216.00 22216.00 22216.00 22280.00 22280.00 22280.00 22280.00 22344.00 22344.00 22344.00 22344.00 22408.00 22408.00 22408.00 22408.00 Next BBC frequencies: 224.00 224.00 224.00 224.00 288.00 288.00 288.00 288.00 352.00 352.00 352.00 352.00 416.00 416.00 416.00 416.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 19 00 00 J1159+2914 12 16 19 75.3 193.5 0.3 11.2 0 0 19 00 00 19 02 00 =1156+295 12 18 19 75.2 195.2 0.3 12.5 120 31 19 00 01 19 04 00 1146+189 12 20 19 64.3 196.8 0.5 12.8 95 31 19 04 00 19 05 10 --- 12 21 29 64.2 197.4 0.5 13.2 70 49 19 04 01 19 05 10 J1143+1834 12 21 29 63.8 200.1 0.6 15.2 -7 49 No stop 19 06 40 --- 12 23 00 63.7 200.9 0.6 15.8 83 72 19 05 11 19 06 40 1146+189 12 23 00 64.1 198.2 0.6 13.8 -7 72 No stop 19 08 10 --- 12 24 30 64.0 199.0 0.6 14.4 83 95 19 06 41 19 08 10 J1143+1834 12 24 30 63.6 201.6 0.7 16.4 -7 95 No stop 19 09 40 --- 12 26 00 63.5 202.4 0.7 16.9 83 118 19 08 11 19 10 10 1146+189 12 26 30 63.9 200.0 0.6 15.2 23 118 19 10 10 19 11 10 --- 12 27 30 63.8 200.6 0.6 15.6 60 133 19 10 11 19 11 10 J1143+1834 12 27 30 63.4 203.2 0.7 17.5 -7 133 No stop 19 12 40 --- 12 29 01 63.3 203.9 0.7 18.1 83 156 19 11 11 19 12 40 1146+189 12 29 01 63.7 201.3 0.7 16.2 -7 156 No stop 19 14 10 --- 12 30 31 63.6 202.1 0.7 16.7 83 179 19 12 41 19 14 10 J1143+1834 12 30 31 63.2 204.7 0.8 18.6 -7 179 No stop 19 15 40 --- 12 32 01 63.1 205.4 0.8 19.2 83 203 19 14 11 19 16 10 1146+189 12 32 31 63.5 203.1 0.7 17.5 23 203 19 16 10 19 17 10 --- 12 33 31 63.4 203.6 0.7 17.9 60 218 19 16 11 19 17 10 J1143+1834 12 33 31 62.9 206.2 0.8 19.7 -7 218 No stop 19 18 40 --- 12 35 02 62.8 206.9 0.8 20.2 83 241 19 17 11 19 18 40 1146+189 12 35 02 63.3 204.4 0.8 18.4 -6 241 No stop 19 20 10 --- 12 36 32 63.2 205.1 0.8 19.0 84 264 19 18 41 19 20 10 J1143+1834 12 36 32 62.7 207.6 0.9 20.8 -7 264 No stop 19 21 40 --- 12 38 02 62.6 208.3 0.9 21.3 83 287 19 20 11 Schedule for URUMQI (Code Ur ) Page 3 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 19 22 10 1146+189 12 38 32 63.0 206.1 0.8 19.7 24 287 19 22 10 19 23 10 --- 12 39 32 63.0 206.6 0.8 20.1 60 303 19 22 11 19 23 10 J1143+1834 12 39 32 62.4 209.1 0.9 21.8 -6 303 No stop 19 24 40 --- 12 41 03 62.3 209.8 0.9 22.3 84 326 19 23 11 19 24 40 1146+189 12 41 03 62.8 207.4 0.9 20.6 -6 326 No stop 19 26 10 --- 12 42 33 62.7 208.1 0.9 21.1 84 349 19 24 41 19 26 10 J1143+1834 12 42 33 62.2 210.5 1.0 22.8 -6 349 No stop 19 27 40 --- 12 44 03 62.0 211.2 1.0 23.3 84 372 19 26 11 19 28 10 1146+189 12 44 33 62.5 209.1 0.9 21.8 24 372 19 28 10 19 29 10 --- 12 45 33 62.4 209.5 0.9 22.2 60 387 19 28 11 19 29 10 J1143+1834 12 45 33 61.9 211.9 1.0 23.8 -6 387 No stop 19 30 40 --- 12 47 04 61.7 212.6 1.0 24.3 84 410 19 29 11 19 30 40 1146+189 12 47 04 62.3 210.2 1.0 22.7 -6 410 No stop 19 32 10 --- 12 48 34 62.2 210.9 1.0 23.2 84 433 19 30 41 19 32 10 J1143+1834 12 48 34 61.6 213.3 1.1 24.8 -6 433 No stop 19 33 40 --- 12 50 04 61.4 213.9 1.1 25.3 84 456 19 32 11 19 34 10 1146+189 12 50 34 62.0 211.9 1.0 23.8 24 456 19 34 10 19 35 10 --- 12 51 34 61.9 212.3 1.0 24.2 60 472 19 34 11 19 35 10 J1143+1834 12 51 34 61.3 214.6 1.1 25.7 -6 472 No stop 19 36 40 --- 12 53 05 61.1 215.3 1.1 26.2 84 495 19 35 11 19 36 40 1146+189 12 53 05 61.7 213.0 1.1 24.7 -6 495 No stop 19 38 10 --- 12 54 35 61.6 213.7 1.1 25.1 84 518 19 36 41 19 38 10 J1143+1834 12 54 35 61.0 215.9 1.2 26.7 -6 518 No stop 19 39 40 --- 12 56 05 60.8 216.6 1.2 27.1 84 541 19 38 11 19 40 10 1146+189 12 56 35 61.4 214.6 1.1 25.8 24 541 19 40 10 19 41 10 --- 12 57 35 61.3 215.1 1.1 26.1 60 556 19 40 11 19 41 10 J1143+1834 12 57 35 60.6 217.2 1.2 27.6 -6 556 No stop 19 42 40 --- 12 59 06 60.5 217.9 1.2 28.0 84 579 19 41 11 19 42 40 1146+189 12 59 06 61.1 215.7 1.2 26.5 -6 579 No stop 19 44 10 --- 13 00 36 61.0 216.4 1.2 27.0 84 603 19 42 41 Schedule for URUMQI (Code Ur ) Page 4 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 19 44 10 J1143+1834 13 00 36 60.3 218.5 1.3 28.4 -6 603 No stop 19 45 40 --- 13 02 06 60.1 219.1 1.3 28.9 84 626 19 44 11 19 46 10 1146+189 13 02 36 60.7 217.2 1.2 27.6 24 626 19 46 10 19 47 10 --- 13 03 36 60.6 217.7 1.2 27.9 60 641 19 46 11 19 47 10 J1143+1834 13 03 36 60.0 219.8 1.3 29.3 -6 641 No stop 19 48 40 --- 13 05 07 59.8 220.4 1.3 29.7 84 664 19 47 11 19 48 40 1146+189 13 05 07 60.5 218.3 1.3 28.3 -6 664 No stop 19 50 10 --- 13 06 37 60.3 218.9 1.3 28.8 84 687 19 48 41 19 50 10 J1143+1834 13 06 37 59.6 221.0 1.4 30.1 -6 687 No stop 19 51 40 --- 13 08 07 59.4 221.6 1.4 30.5 84 710 19 50 11 19 52 10 1146+189 13 08 37 60.1 219.8 1.3 29.3 24 710 19 52 10 19 53 10 --- 13 09 37 59.9 220.2 1.3 29.6 60 726 19 52 11 19 53 10 J1143+1834 13 09 37 59.2 222.2 1.4 30.9 -6 726 No stop 19 54 40 --- 13 11 08 59.1 222.8 1.4 31.3 84 749 19 53 11 19 54 40 1146+189 13 11 08 59.8 220.8 1.4 30.0 -6 749 No stop 19 56 10 --- 13 12 38 59.6 221.4 1.4 30.4 84 772 19 54 41 19 56 10 J1143+1834 13 12 38 58.9 223.4 1.5 31.7 -6 772 No stop 19 57 40 --- 13 14 08 58.7 224.0 1.5 32.1 84 795 19 56 11 19 58 10 1146+189 13 14 38 59.3 222.2 1.4 31.0 24 795 19 58 10 19 59 10 --- 13 15 38 59.2 222.6 1.4 31.2 60 810 19 58 11 19 59 10 J1143+1834 13 15 38 58.5 224.6 1.5 32.5 -6 810 No stop 20 00 40 --- 13 17 09 58.3 225.1 1.5 32.8 84 833 19 59 11 20 00 40 1146+189 13 17 09 59.0 223.2 1.5 31.6 -6 833 No stop 20 02 10 --- 13 18 39 58.8 223.8 1.5 32.0 84 856 20 00 41 20 02 10 J1143+1834 13 18 39 58.1 225.7 1.6 33.2 -6 856 No stop 20 03 40 --- 13 20 09 57.9 226.3 1.6 33.5 84 879 20 02 11 20 04 10 1146+189 13 20 39 58.6 224.6 1.5 32.5 24 879 20 04 10 20 05 10 --- 13 21 39 58.5 225.0 1.5 32.7 60 895 20 04 11 20 05 10 J1143+1834 13 21 39 57.7 226.8 1.6 33.9 -6 895 No stop 20 06 40 --- 13 23 10 57.5 227.4 1.6 34.2 84 918 20 05 11 Schedule for URUMQI (Code Ur ) Page 5 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 20 06 40 1146+189 13 23 10 58.3 225.5 1.6 33.1 -6 918 No stop 20 08 10 --- 13 24 40 58.1 226.1 1.6 33.5 84 941 20 06 41 20 08 10 J1143+1834 13 24 40 57.3 227.9 1.7 34.6 -6 941 No stop 20 09 40 --- 13 26 10 57.1 228.4 1.7 34.9 84 964 20 08 11 20 10 10 1146+189 13 26 40 57.8 226.8 1.6 33.9 24 964 20 10 10 20 11 10 --- 13 27 40 57.7 227.2 1.6 34.2 60 979 20 10 11 20 11 10 J1143+1834 13 27 40 56.9 229.0 1.7 35.3 -6 979 No stop 20 12 40 --- 13 29 11 56.7 229.5 1.7 35.6 84 1003 20 11 11 20 12 40 1146+189 13 29 11 57.5 227.8 1.7 34.5 -6 1003 No stop 20 14 10 --- 13 30 41 57.3 228.3 1.7 34.9 84 1026 20 12 41 20 14 10 J1143+1834 13 30 41 56.5 230.0 1.8 35.9 -6 1026 No stop 20 15 40 --- 13 32 11 56.3 230.6 1.8 36.2 84 1049 20 14 11 20 16 10 1146+189 13 32 41 57.0 229.0 1.7 35.3 24 1049 20 16 10 20 17 10 --- 13 33 41 56.9 229.4 1.7 35.5 60 1064 20 16 11 20 17 10 J1143+1834 13 33 41 56.1 231.1 1.8 36.5 -6 1064 No stop 20 18 40 --- 13 35 12 55.9 231.6 1.8 36.8 84 1087 20 17 11 20 18 40 1146+189 13 35 12 56.7 229.9 1.8 35.8 -6 1087 No stop 20 20 10 --- 13 36 42 56.4 230.4 1.8 36.2 84 1110 20 18 41 20 20 10 J1143+1834 13 36 42 55.6 232.1 1.9 37.1 -6 1110 No stop 20 21 40 --- 13 38 12 55.4 232.6 1.9 37.4 84 1133 20 20 11 20 22 10 1146+189 13 38 42 56.2 231.1 1.8 36.6 24 1133 20 22 10 20 23 10 --- 13 39 42 56.0 231.5 1.8 36.8 60 1149 20 22 11 20 23 10 J1143+1834 13 39 42 55.2 233.1 1.9 37.7 -6 1149 No stop 20 24 40 --- 13 41 13 55.0 233.6 1.9 38.0 84 1172 20 23 11 20 24 40 1146+189 13 41 13 55.8 232.0 1.9 37.1 -6 1172 No stop 20 26 10 --- 13 42 43 55.6 232.5 1.9 37.4 84 1195 20 24 41 20 26 10 J1143+1834 13 42 43 54.8 234.1 2.0 38.3 -6 1195 No stop 20 27 40 --- 13 44 13 54.5 234.6 2.0 38.6 84 1218 20 26 11 20 28 10 1146+189 13 44 43 55.3 233.1 1.9 37.8 24 1218 20 28 10 20 29 10 --- 13 45 43 55.2 233.5 1.9 38.0 60 1233 20 28 11 Schedule for URUMQI (Code Ur ) Page 6 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 20 29 10 J1143+1834 13 45 43 54.3 235.0 2.0 38.8 -6 1233 No stop 20 30 40 --- 13 47 14 54.1 235.5 2.0 39.1 84 1256 20 29 11 20 30 40 1146+189 13 47 14 54.9 234.0 2.0 38.2 -6 1256 No stop 20 32 10 --- 13 48 44 54.7 234.4 2.0 38.5 84 1279 20 30 41 20 32 10 J1143+1834 13 48 44 53.9 236.0 2.1 39.4 -6 1279 No stop 20 33 40 --- 13 50 14 53.6 236.4 2.1 39.6 84 1303 20 32 11 20 34 10 1146+189 13 50 44 54.4 235.1 2.0 38.9 25 1303 20 34 10 20 35 10 --- 13 51 44 54.3 235.4 2.0 39.1 60 1318 20 34 11 20 35 10 J1143+1834 13 51 44 53.4 236.9 2.1 39.9 -5 1318 No stop 20 36 40 --- 13 53 15 53.2 237.4 2.1 40.1 85 1341 20 35 11 20 36 40 1146+189 13 53 15 54.0 235.9 2.1 39.3 -5 1341 No stop 20 38 10 --- 13 54 45 53.8 236.3 2.1 39.6 85 1364 20 36 41 20 38 10 J1143+1834 13 54 45 53.0 237.8 2.2 40.4 -5 1364 No stop 20 39 40 --- 13 56 15 52.7 238.3 2.2 40.6 85 1387 20 38 11 20 40 10 1146+189 13 56 45 53.5 237.0 2.1 39.9 25 1387 20 40 10 20 41 10 --- 13 57 45 53.4 237.3 2.1 40.1 60 1403 20 40 11 20 41 10 J1143+1834 13 57 45 52.5 238.7 2.2 40.8 -5 1403 No stop 20 42 40 --- 13 59 16 52.3 239.2 2.2 41.1 85 1426 20 41 11 20 42 40 1146+189 13 59 16 53.1 237.7 2.2 40.3 -5 1426 No stop 20 44 10 --- 14 00 46 52.9 238.2 2.2 40.6 85 1449 20 42 41 20 44 10 J1143+1834 14 00 46 52.0 239.6 2.3 41.3 -5 1449 No stop 20 45 40 --- 14 02 16 51.8 240.0 2.3 41.5 85 1472 20 44 11 20 46 10 1146+189 14 02 46 52.6 238.8 2.2 40.9 25 1472 20 46 10 20 47 10 --- 14 03 46 52.4 239.1 2.2 41.0 60 1487 20 46 11 20 47 10 J1143+1834 14 03 46 51.6 240.5 2.3 41.7 -5 1487 No stop 20 48 40 --- 14 05 16 51.3 240.9 2.3 41.9 85 1510 20 47 11 20 48 40 1146+189 14 05 16 52.2 239.5 2.3 41.3 -5 1510 No stop 20 50 10 --- 14 06 47 52.0 239.9 2.3 41.5 85 1533 20 48 41 20 50 10 J1143+1834 14 06 47 51.1 241.3 2.4 42.1 -5 1533 No stop 20 51 40 --- 14 08 17 50.8 241.7 2.4 42.4 85 1556 20 50 11 Schedule for URUMQI (Code Ur ) Page 7 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 20 52 10 1146+189 14 08 47 51.6 240.5 2.3 41.8 25 1556 20 52 10 20 53 10 --- 14 09 47 51.5 240.8 2.3 41.9 60 1572 20 52 11 ---------- fringe finder & EF pointing ---------- 21 01 10 J1159+2914 14 17 49 59.2 253.7 2.3 52.9 459 1572 21 01 10 21 05 10 =1156+295 14 21 49 58.5 254.7 2.4 53.3 240 1633 21 01 11 21 06 20 1146+189 14 22 59 49.4 244.4 2.6 43.6 49 1633 21 06 20 21 07 30 --- 14 24 10 49.2 244.7 2.6 43.8 70 1651 21 06 21 21 07 30 J1143+1834 14 24 10 48.3 245.9 2.7 44.3 -5 1651 No stop 21 09 00 --- 14 25 40 48.0 246.3 2.7 44.5 85 1674 21 07 31 21 09 00 1146+189 14 25 40 48.9 245.1 2.6 44.0 -5 1674 No stop 21 10 30 --- 14 27 10 48.7 245.5 2.6 44.1 85 1697 21 09 01 21 10 30 J1143+1834 14 27 10 47.8 246.7 2.7 44.6 -5 1697 No stop 21 12 00 --- 14 28 40 47.5 247.1 2.7 44.8 85 1721 21 10 31 21 12 30 1146+189 14 29 10 48.3 246.0 2.7 44.4 25 1721 21 12 30 21 13 30 --- 14 30 11 48.2 246.3 2.7 44.5 60 1736 21 12 31 21 13 30 J1143+1834 14 30 11 47.2 247.5 2.8 45.0 -5 1736 No stop 21 15 00 --- 14 31 41 47.0 247.8 2.8 45.1 85 1759 21 13 31 21 15 00 1146+189 14 31 41 47.9 246.6 2.7 44.6 -5 1759 No stop 21 16 30 --- 14 33 11 47.7 247.0 2.7 44.8 85 1782 21 15 01 21 16 30 J1143+1834 14 33 11 46.7 248.2 2.8 45.3 -5 1782 No stop 21 18 00 --- 14 34 41 46.5 248.6 2.8 45.4 85 1805 21 16 31 21 18 30 1146+189 14 35 11 47.3 247.5 2.8 45.0 25 1805 21 18 30 21 19 30 --- 14 36 12 47.2 247.8 2.8 45.1 60 1821 21 18 31 21 19 30 J1143+1834 14 36 12 46.2 248.9 2.9 45.5 -5 1821 No stop 21 21 00 --- 14 37 42 46.0 249.3 2.9 45.7 85 1844 21 19 31 21 21 00 1146+189 14 37 42 46.9 248.1 2.8 45.3 -5 1844 No stop 21 22 30 --- 14 39 12 46.7 248.5 2.8 45.4 85 1867 21 21 01 21 22 30 J1143+1834 14 39 12 45.7 249.6 2.9 45.8 -5 1867 No stop 21 24 00 --- 14 40 42 45.5 250.0 2.9 46.0 85 1890 21 22 31 Schedule for URUMQI (Code Ur ) Page 8 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 21 24 30 1146+189 14 41 12 46.3 249.0 2.9 45.6 25 1890 21 24 30 21 25 30 --- 14 42 13 46.2 249.2 2.9 45.7 60 1905 21 24 31 21 25 30 J1143+1834 14 42 13 45.2 250.3 3.0 46.1 -5 1905 No stop 21 27 00 --- 14 43 43 45.0 250.7 3.0 46.2 85 1928 21 25 31 21 27 00 1146+189 14 43 43 45.9 249.6 2.9 45.8 -5 1928 No stop 21 28 30 --- 14 45 13 45.6 249.9 2.9 46.0 85 1951 21 27 01 21 28 30 J1143+1834 14 45 13 44.7 251.0 3.0 46.3 -5 1951 No stop 21 30 00 --- 14 46 43 44.4 251.4 3.0 46.5 85 1974 21 28 31 21 30 30 1146+189 14 47 13 45.3 250.4 3.0 46.1 25 1974 21 30 30 21 31 30 --- 14 48 14 45.1 250.6 3.0 46.2 60 1990 21 30 31 21 31 30 J1143+1834 14 48 14 44.2 251.7 3.1 46.6 -5 1990 No stop 21 33 00 --- 14 49 44 43.9 252.1 3.1 46.7 85 2013 21 31 31 21 33 00 1146+189 14 49 44 44.9 251.0 3.0 46.4 -5 2013 No stop 21 34 30 --- 14 51 14 44.6 251.3 3.0 46.5 85 2036 21 33 01 21 34 30 J1143+1834 14 51 14 43.7 252.4 3.1 46.8 -5 2036 No stop 21 36 00 --- 14 52 44 43.4 252.7 3.1 46.9 85 2059 21 34 31 21 36 30 1146+189 14 53 14 44.3 251.8 3.1 46.6 25 2059 21 36 30 21 37 30 --- 14 54 15 44.1 252.0 3.1 46.7 60 2074 21 36 31 21 37 30 J1143+1834 14 54 15 43.1 253.1 3.2 47.0 -5 2074 No stop 21 39 00 --- 14 55 45 42.9 253.4 3.2 47.2 85 2097 21 37 31 21 39 00 1146+189 14 55 45 43.8 252.4 3.1 46.8 -5 2097 No stop 21 40 30 --- 14 57 15 43.6 252.7 3.1 46.9 85 2121 21 39 01 21 40 30 J1143+1834 14 57 15 42.6 253.7 3.2 47.3 -5 2121 No stop 21 42 00 --- 14 58 45 42.4 254.1 3.2 47.4 85 2144 21 40 31 21 42 30 1146+189 14 59 15 43.2 253.1 3.2 47.1 25 2144 21 42 30 21 43 30 --- 15 00 16 43.1 253.4 3.2 47.2 60 2159 21 42 31 21 43 30 J1143+1834 15 00 16 42.1 254.4 3.3 47.5 -5 2159 No stop 21 45 00 --- 15 01 46 41.8 254.7 3.3 47.6 85 2182 21 43 31 21 45 00 1146+189 15 01 46 42.8 253.7 3.2 47.3 -5 2182 No stop 21 46 30 --- 15 03 16 42.5 254.0 3.2 47.4 85 2205 21 45 01 Schedule for URUMQI (Code Ur ) Page 9 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 21 46 30 J1143+1834 15 03 16 41.6 255.0 3.3 47.7 -5 2205 No stop 21 48 00 --- 15 04 46 41.3 255.4 3.3 47.7 85 2228 21 46 31 21 48 30 1146+189 15 05 16 42.2 254.5 3.3 47.5 25 2228 21 48 30 21 49 30 --- 15 06 16 42.0 254.7 3.3 47.6 60 2244 21 48 31 21 49 30 J1143+1834 15 06 16 41.0 255.7 3.4 47.8 -5 2244 No stop 21 51 00 --- 15 07 47 40.8 256.0 3.4 47.9 85 2267 21 49 31 21 51 00 1146+189 15 07 47 41.7 255.0 3.3 47.7 -5 2267 No stop 21 52 30 --- 15 09 17 41.5 255.3 3.3 47.8 85 2290 21 51 01 21 52 30 J1143+1834 15 09 17 40.5 256.3 3.4 48.0 -5 2290 No stop 21 54 00 --- 15 10 47 40.2 256.6 3.4 48.1 85 2313 21 52 31 21 54 30 1146+189 15 11 17 41.1 255.7 3.4 47.9 25 2313 21 54 30 21 55 30 --- 15 12 17 41.0 255.9 3.4 47.9 60 2328 21 54 31 21 55 30 J1143+1834 15 12 17 40.0 256.9 3.5 48.2 -5 2328 No stop 21 57 00 --- 15 13 48 39.7 257.2 3.5 48.3 85 2351 21 55 31 21 57 00 1146+189 15 13 48 40.7 256.3 3.4 48.0 -5 2351 No stop 21 58 30 --- 15 15 18 40.4 256.6 3.4 48.1 85 2374 21 57 01 21 58 30 J1143+1834 15 15 18 39.4 257.6 3.5 48.3 -5 2374 No stop 22 00 00 --- 15 16 48 39.2 257.9 3.5 48.4 85 2397 21 58 31 22 00 30 1146+189 15 17 18 40.1 257.0 3.5 48.2 25 2397 22 00 30 22 01 30 --- 15 18 18 39.9 257.2 3.5 48.3 60 2413 22 00 31 22 01 30 J1143+1834 15 18 18 38.9 258.2 3.6 48.5 -5 2413 No stop 22 03 00 --- 15 19 49 38.6 258.5 3.6 48.6 85 2436 22 01 31 22 03 00 1146+189 15 19 49 39.6 257.5 3.5 48.4 -5 2436 No stop 22 04 30 --- 15 21 19 39.4 257.8 3.5 48.4 85 2459 22 03 01 22 04 30 J1143+1834 15 21 19 38.4 258.8 3.6 48.6 -5 2459 No stop 22 06 00 --- 15 22 49 38.1 259.1 3.6 48.7 85 2482 22 04 31 22 06 30 1146+189 15 23 19 39.0 258.2 3.6 48.5 25 2482 22 06 30 22 07 30 --- 15 24 19 38.8 258.4 3.6 48.6 60 2497 22 06 31 22 07 30 J1143+1834 15 24 19 37.8 259.4 3.7 48.8 -5 2497 No stop 22 09 00 --- 15 25 50 37.6 259.7 3.7 48.8 85 2521 22 07 31 Schedule for URUMQI (Code Ur ) Page 10 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 22 09 00 1146+189 15 25 50 38.6 258.7 3.6 48.6 -5 2521 No stop 22 10 30 --- 15 27 20 38.3 259.0 3.6 48.7 85 2544 22 09 01 22 10 30 J1143+1834 15 27 20 37.3 260.0 3.7 48.9 -5 2544 No stop 22 12 00 --- 15 28 50 37.0 260.3 3.7 48.9 85 2567 22 10 31 22 12 30 1146+189 15 29 20 37.9 259.4 3.7 48.8 25 2567 22 12 30 22 13 30 --- 15 30 20 37.8 259.6 3.7 48.8 60 2582 22 12 31 22 13 30 J1143+1834 15 30 20 36.8 260.5 3.8 49.0 -5 2582 No stop 22 15 00 --- 15 31 51 36.5 260.8 3.8 49.0 85 2605 22 13 31 22 15 00 1146+189 15 31 51 37.5 259.9 3.7 48.9 -5 2605 No stop 22 16 30 --- 15 33 21 37.2 260.2 3.7 49.0 85 2628 22 15 01 22 16 30 J1143+1834 15 33 21 36.2 261.1 3.8 49.1 -5 2628 No stop 22 18 00 --- 15 34 51 36.0 261.4 3.8 49.2 85 2651 22 16 31 22 18 30 1146+189 15 35 21 36.9 260.6 3.8 49.0 25 2651 22 18 30 22 19 30 --- 15 36 21 36.7 260.8 3.8 49.1 60 2667 22 18 31 22 19 30 J1143+1834 15 36 21 35.7 261.7 3.9 49.2 -5 2667 No stop 22 21 00 --- 15 37 52 35.4 262.0 3.9 49.2 85 2690 22 19 31 22 21 00 1146+189 15 37 52 36.4 261.1 3.8 49.1 -5 2690 No stop 22 22 30 --- 15 39 22 36.1 261.4 3.8 49.2 85 2713 22 21 01 22 22 30 J1143+1834 15 39 22 35.1 262.3 3.9 49.3 -5 2713 No stop 22 24 00 --- 15 40 52 34.9 262.6 3.9 49.3 85 2736 22 22 31 22 24 30 1146+189 15 41 22 35.8 261.8 3.9 49.2 25 2736 22 24 30 22 25 30 --- 15 42 22 35.6 262.0 3.9 49.3 60 2751 22 24 31 22 25 30 J1143+1834 15 42 22 34.6 262.8 4.0 49.4 -5 2751 No stop 22 27 00 --- 15 43 53 34.3 263.1 4.0 49.4 85 2774 22 25 31 22 27 00 1146+189 15 43 53 35.3 262.2 3.9 49.3 -5 2774 No stop 22 28 30 --- 15 45 23 35.1 262.5 3.9 49.4 85 2797 22 27 01 22 28 30 J1143+1834 15 45 23 34.1 263.4 4.0 49.5 -5 2797 No stop 22 30 00 --- 15 46 53 33.8 263.7 4.0 49.5 85 2821 22 28 31 22 30 30 1146+189 15 47 23 34.7 262.9 4.0 49.4 25 2821 22 30 30 22 31 30 --- 15 48 23 34.5 263.1 4.0 49.5 60 2836 22 30 31 Schedule for URUMQI (Code Ur ) Page 11 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 22 31 30 J1143+1834 15 48 23 33.5 264.0 4.1 49.5 -5 2836 No stop 22 33 00 --- 15 49 54 33.2 264.2 4.1 49.6 85 2859 22 31 31 22 33 00 1146+189 15 49 54 34.2 263.4 4.0 49.5 -5 2859 No stop 22 34 30 --- 15 51 24 34.0 263.6 4.0 49.5 85 2882 22 33 01 22 34 30 J1143+1834 15 51 24 33.0 264.5 4.1 49.6 -5 2882 No stop 22 36 00 --- 15 52 54 32.7 264.8 4.1 49.6 85 2905 22 34 31 22 36 30 1146+189 15 53 24 33.6 264.0 4.1 49.6 25 2905 22 36 30 22 37 30 --- 15 54 24 33.4 264.2 4.1 49.6 60 2921 22 36 31 22 37 30 J1143+1834 15 54 24 32.4 265.1 4.2 49.7 -5 2921 No stop 22 39 00 --- 15 55 55 32.2 265.3 4.2 49.7 85 2944 22 37 31 22 39 00 1146+189 15 55 55 33.2 264.5 4.1 49.6 -5 2944 No stop 22 40 30 --- 15 57 25 32.9 264.8 4.1 49.7 85 2967 22 39 01 22 40 30 J1143+1834 15 57 25 31.9 265.6 4.2 49.7 -5 2967 No stop 22 42 00 --- 15 58 55 31.6 265.9 4.2 49.7 85 2990 22 40 31 22 42 30 1146+189 15 59 25 32.5 265.1 4.2 49.7 25 2990 22 42 30 22 43 30 --- 16 00 25 32.3 265.3 4.2 49.7 60 3005 22 42 31 22 43 30 J1143+1834 16 00 25 31.3 266.2 4.3 49.8 -5 3005 No stop 22 45 00 --- 16 01 56 31.1 266.4 4.3 49.8 85 3028 22 43 31 22 45 00 1146+189 16 01 56 32.1 265.6 4.2 49.7 -5 3028 No stop 22 46 30 --- 16 03 26 31.8 265.8 4.2 49.8 85 3051 22 45 01 22 46 30 J1143+1834 16 03 26 30.8 266.7 4.3 49.8 -5 3051 No stop 22 48 00 --- 16 04 56 30.5 267.0 4.3 49.8 85 3074 22 46 31 22 48 30 1146+189 16 05 26 31.4 266.2 4.3 49.8 25 3074 22 48 30 22 49 30 --- 16 06 26 31.3 266.4 4.3 49.8 60 3090 22 48 31 22 49 30 J1143+1834 16 06 26 30.3 267.2 4.4 49.8 -5 3090 No stop 22 51 00 --- 16 07 57 30.0 267.5 4.4 49.8 85 3113 22 49 31 22 51 00 1146+189 16 07 57 31.0 266.7 4.3 49.8 -5 3113 No stop 22 52 30 --- 16 09 27 30.7 266.9 4.3 49.8 85 3136 22 51 01 22 52 30 J1143+1834 16 09 27 29.7 267.8 4.4 49.9 -5 3136 No stop 22 54 00 --- 16 10 57 29.4 268.0 4.4 49.9 85 3159 22 52 31 Schedule for URUMQI (Code Ur ) Page 12 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 22 54 30 1146+189 16 11 27 30.3 267.3 4.4 49.9 25 3159 22 54 30 22 55 30 --- 16 12 27 30.2 267.5 4.4 49.9 60 3174 22 54 31 ---------- fringe finder & EF pointing ---------- 23 03 30 J1159+2914 16 20 29 37.1 277.1 4.3 55.5 460 3174 23 03 30 23 07 30 =1156+295 16 24 29 36.4 277.7 4.4 55.4 240 3236 23 03 31 23 08 40 1146+189 16 25 39 27.8 269.8 4.6 49.9 50 3236 23 08 40 23 09 50 --- 16 26 50 27.6 270.0 4.6 49.9 70 3254 23 08 41 23 09 50 J1143+1834 16 26 50 26.6 270.8 4.7 49.9 -5 3254 No stop 23 11 20 --- 16 28 20 26.3 271.0 4.7 49.9 85 3277 23 09 51 23 11 20 1146+189 16 28 20 27.3 270.2 4.6 49.9 -5 3277 No stop 23 12 50 --- 16 29 50 27.0 270.5 4.7 49.9 85 3300 23 11 21 23 12 50 J1143+1834 16 29 50 26.0 271.3 4.8 49.9 -5 3300 No stop 23 14 20 --- 16 31 20 25.7 271.5 4.8 49.9 85 3323 23 12 51 23 14 50 1146+189 16 31 51 26.6 270.8 4.7 49.9 25 3323 23 14 50 23 15 50 --- 16 32 51 26.5 271.0 4.7 49.9 60 3338 23 14 51 23 15 50 J1143+1834 16 32 51 25.5 271.8 4.8 49.9 -5 3338 No stop 23 17 20 --- 16 34 21 25.2 272.0 4.8 49.9 85 3362 23 15 51 23 17 20 1146+189 16 34 21 26.2 271.2 4.7 49.9 -5 3362 No stop 23 18 50 --- 16 35 51 25.9 271.5 4.8 49.9 85 3385 23 17 21 23 18 50 J1143+1834 16 35 51 24.9 272.3 4.9 49.9 -5 3385 No stop 23 20 20 --- 16 37 21 24.6 272.6 4.9 49.8 85 3408 23 18 51 23 20 50 1146+189 16 37 51 25.6 271.8 4.8 49.9 25 3408 23 20 50 23 21 50 --- 16 38 52 25.4 272.0 4.8 49.9 60 3423 23 20 51 23 21 50 J1143+1834 16 38 52 24.4 272.8 4.9 49.8 -5 3423 No stop 23 23 20 --- 16 40 22 24.1 273.1 4.9 49.8 85 3446 23 21 51 23 23 20 1146+189 16 40 22 25.1 272.3 4.8 49.9 -5 3446 No stop 23 24 50 --- 16 41 52 24.8 272.5 4.9 49.9 85 3469 23 23 21 23 24 50 J1143+1834 16 41 52 23.8 273.3 5.0 49.8 -5 3469 No stop 23 26 20 --- 16 43 22 23.6 273.6 5.0 49.8 85 3492 23 24 51 Schedule for URUMQI (Code Ur ) Page 13 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 23 26 50 1146+189 16 43 52 24.5 272.9 4.9 49.9 25 3492 23 26 50 23 27 50 --- 16 44 53 24.3 273.0 4.9 49.8 60 3508 23 26 51 23 27 50 J1143+1834 16 44 53 23.3 273.8 5.0 49.8 -5 3508 No stop 23 29 20 --- 16 46 23 23.0 274.1 5.0 49.7 85 3531 23 27 51 23 29 20 1146+189 16 46 23 24.0 273.3 4.9 49.8 -5 3531 No stop 23 30 50 --- 16 47 53 23.7 273.5 5.0 49.8 85 3554 23 29 21 23 30 50 J1143+1834 16 47 53 22.7 274.3 5.1 49.7 -5 3554 No stop 23 32 20 --- 16 49 23 22.5 274.6 5.1 49.7 85 3577 23 30 51 23 32 50 1146+189 16 49 53 23.4 273.9 5.0 49.8 25 3577 23 32 50 23 33 50 --- 16 50 54 23.2 274.0 5.0 49.8 60 3592 23 32 51 23 33 50 J1143+1834 16 50 54 22.2 274.8 5.1 49.7 -5 3592 No stop 23 35 20 --- 16 52 24 21.9 275.1 5.1 49.6 85 3615 23 33 51 23 35 20 1146+189 16 52 24 22.9 274.3 5.0 49.8 -5 3615 No stop 23 36 50 --- 16 53 54 22.7 274.5 5.1 49.7 85 3638 23 35 21 23 36 50 J1143+1834 16 53 54 21.7 275.3 5.2 49.6 -5 3638 No stop 23 38 20 --- 16 55 24 21.4 275.6 5.2 49.6 85 3662 23 36 51 23 38 50 1146+189 16 55 54 22.3 274.9 5.1 49.7 25 3662 23 38 50 23 39 50 --- 16 56 55 22.1 275.0 5.1 49.7 60 3677 23 38 51 23 39 50 J1143+1834 16 56 55 21.1 275.8 5.2 49.6 -5 3677 No stop 23 41 20 --- 16 58 25 20.8 276.1 5.2 49.5 85 3700 23 39 51 23 41 20 1146+189 16 58 25 21.8 275.3 5.1 49.7 -5 3700 No stop 23 42 50 --- 16 59 55 21.6 275.5 5.2 49.6 85 3723 23 41 21 23 42 50 J1143+1834 16 59 55 20.6 276.3 5.3 49.5 -5 3723 No stop 23 44 20 --- 17 01 25 20.3 276.6 5.3 49.5 85 3746 23 42 51 23 44 50 1146+189 17 01 55 21.2 275.9 5.2 49.6 25 3746 23 44 50 23 45 50 --- 17 02 56 21.0 276.0 5.2 49.6 60 3762 23 44 51 23 45 50 J1143+1834 17 02 56 20.0 276.8 5.3 49.4 -5 3762 No stop 23 47 20 --- 17 04 26 19.8 277.0 5.3 49.4 85 3785 23 45 51 23 47 20 1146+189 17 04 26 20.8 276.3 5.2 49.5 -5 3785 No stop 23 48 50 --- 17 05 56 20.5 276.5 5.3 49.5 85 3808 23 47 21 Schedule for URUMQI (Code Ur ) Page 14 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 13 Mar 2024 Day 73 --- 23 48 50 J1143+1834 17 05 56 19.5 277.3 5.4 49.4 -5 3808 No stop 23 50 20 --- 17 07 26 19.2 277.5 5.4 49.3 85 3831 23 48 51 23 50 50 1146+189 17 07 56 20.1 276.8 5.3 49.5 25 3831 23 50 50 23 51 50 --- 17 08 57 19.9 277.0 5.3 49.4 60 3846 23 50 51 23 51 50 J1143+1834 17 08 57 18.9 277.8 5.4 49.3 -5 3846 No stop 23 53 20 --- 17 10 27 18.7 278.0 5.4 49.2 85 3869 23 51 51 23 53 20 1146+189 17 10 27 19.7 277.3 5.3 49.4 -5 3869 No stop 23 54 50 --- 17 11 57 19.4 277.5 5.4 49.4 85 3892 23 53 21 23 54 50 J1143+1834 17 11 57 18.4 278.3 5.5 49.2 -5 3892 No stop 23 56 20 --- 17 13 27 18.1 278.5 5.5 49.2 85 3915 23 54 51 23 56 50 1146+189 17 13 57 19.0 277.8 5.4 49.3 25 3915 23 56 50 23 57 50 --- 17 14 58 18.9 278.0 5.4 49.3 60 3931 23 56 51 23 57 50 J1143+1834 17 14 58 17.9 278.8 5.5 49.1 -5 3931 No stop 23 59 20 --- 17 16 28 17.6 279.0 5.5 49.1 85 3954 23 57 51 --- Start: Wed 13 Mar 2024 Day 73 -- Stop: Thu 14 Mar 2024 Day 74 --- 23 59 20 1146+189 17 16 28 18.6 278.2 5.4 49.2 -5 3954 No stop 00 00 50 --- 17 17 58 18.3 278.5 5.5 49.2 85 3977 23 59 21 00 00 50 J1143+1834 17 17 58 17.3 279.3 5.6 49.0 -5 3977 No stop 00 02 20 --- 17 19 28 17.1 279.5 5.6 49.0 85 4000 00 00 51 00 02 50 1146+189 17 19 58 18.0 278.8 5.5 49.1 25 4000 00 02 50 00 03 50 --- 17 20 59 17.8 279.0 5.5 49.1 60 4015 00 02 51 00 03 50 J1143+1834 17 20 59 16.8 279.7 5.6 48.9 -5 4015 No stop 00 05 20 --- 17 22 29 16.5 280.0 5.6 48.9 85 4038 00 03 51 00 05 20 1146+189 17 22 29 17.5 279.2 5.5 49.1 -5 4038 No stop 00 06 50 --- 17 23 59 17.2 279.5 5.6 49.0 85 4062 00 05 21 00 06 50 J1143+1834 17 23 59 16.2 280.2 5.7 48.8 -5 4062 No stop 00 08 20 --- 17 25 29 16.0 280.5 5.7 48.8 85 4085 00 06 51 00 08 50 1146+189 17 25 59 16.9 279.8 5.6 49.0 25 4085 00 08 50 00 09 50 --- 17 27 00 16.7 280.0 5.6 48.9 60 4100 00 08 51 Schedule for URUMQI (Code Ur ) Page 15 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Thu 14 Mar 2024 Day 74 --- 00 09 50 J1143+1834 17 27 00 15.7 280.7 5.7 48.7 -5 4100 No stop 00 11 20 --- 17 28 30 15.4 281.0 5.7 48.7 85 4123 00 09 51 00 11 20 1146+189 17 28 30 16.4 280.2 5.6 48.9 -5 4123 No stop 00 12 50 --- 17 30 00 16.2 280.4 5.7 48.8 85 4146 00 11 21 00 12 50 J1143+1834 17 30 00 15.2 281.2 5.8 48.6 -5 4146 No stop 00 14 20 --- 17 31 30 14.9 281.5 5.8 48.6 85 4169 00 12 51 00 14 50 1146+189 17 32 00 15.8 280.8 5.7 48.8 25 4169 00 14 50 00 15 50 --- 17 33 01 15.6 280.9 5.7 48.7 60 4185 00 14 51 00 15 50 J1143+1834 17 33 01 14.6 281.7 5.8 48.5 -5 4185 No stop 00 17 20 --- 17 34 31 14.4 281.9 5.8 48.5 85 4208 00 15 51 00 17 20 1146+189 17 34 31 15.4 281.2 5.7 48.7 -5 4208 No stop 00 18 50 --- 17 36 01 15.1 281.4 5.8 48.6 85 4231 00 17 21 00 18 50 J1143+1834 17 36 01 14.1 282.2 5.9 48.4 -5 4231 No stop 00 20 20 --- 17 37 31 13.8 282.4 5.9 48.3 85 4254 00 18 51 00 20 50 1146+189 17 38 01 14.7 281.7 5.8 48.5 25 4254 00 20 50 00 21 50 --- 17 39 02 14.6 281.9 5.8 48.5 60 4269 00 20 51 00 21 50 J1143+1834 17 39 02 13.6 282.7 5.9 48.3 -5 4269 No stop 00 23 20 --- 17 40 32 13.3 282.9 5.9 48.2 85 4292 00 21 51 00 23 20 1146+189 17 40 32 14.3 282.2 5.8 48.4 -5 4292 No stop 00 24 50 --- 17 42 02 14.0 282.4 5.9 48.4 85 4315 00 23 21 00 24 50 J1143+1834 17 42 02 13.0 283.2 6.0 48.1 -5 4315 No stop 00 26 20 --- 17 43 32 12.8 283.4 6.0 48.1 85 4338 00 24 51 00 26 50 1146+189 17 44 02 13.7 282.7 5.9 48.3 25 4338 00 26 50 00 27 50 --- 17 45 02 13.5 282.9 5.9 48.3 60 4354 00 26 51 00 27 50 J1143+1834 17 45 02 12.5 283.7 6.0 48.0 -5 4354 No stop 00 29 20 --- 17 46 33 12.2 283.9 6.0 48.0 85 4377 00 27 51 00 29 20 1146+189 17 46 33 13.2 283.1 5.9 48.2 -5 4377 No stop 00 30 50 --- 17 48 03 13.0 283.4 6.0 48.1 85 4400 00 29 21 00 30 50 J1143+1834 17 48 03 12.0 284.1 6.1 47.9 -5 4400 No stop 00 32 20 --- 17 49 33 11.7 284.4 6.1 47.8 85 4423 00 30 51 Schedule for URUMQI (Code Ur ) Page 16 Study of a potential gravitational lens system at milliarcsecond scales UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Thu 14 Mar 2024 Day 74 --- 00 32 50 1146+189 17 50 03 12.6 283.7 6.0 48.0 25 4423 00 32 50 00 33 50 --- 17 51 03 12.4 283.9 6.0 48.0 60 4438 00 32 51 00 33 50 J1143+1834 17 51 03 11.5 284.6 6.1 47.7 -5 4438 No stop 00 35 20 --- 17 52 34 11.2 284.9 6.1 47.7 85 4462 00 33 51 00 35 20 1146+189 17 52 34 12.2 284.1 6.0 47.9 -5 4462 No stop 00 36 50 --- 17 54 04 11.9 284.4 6.1 47.9 85 4485 00 35 21 00 36 50 J1143+1834 17 54 04 10.9 285.1 6.2 47.6 -5 4485 No stop 00 38 20 --- 17 55 34 10.7 285.4 6.2 47.5 85 4508 00 36 51 00 38 50 1146+189 17 56 04 11.5 284.7 6.1 47.8 25 4508 00 38 50 00 39 50 --- 17 57 04 11.4 284.8 6.1 47.7 60 4523 00 38 51 00 39 50 J1143+1834 17 57 04 10.4 285.6 6.2 47.5 -5 4523 No stop 00 41 20 --- 17 58 35 10.1 285.9 6.2 47.4 85 4546 00 39 51 00 41 20 1146+189 17 58 35 11.1 285.1 6.1 47.6 -5 4546 No stop 00 42 50 --- 18 00 05 10.8 285.3 6.2 47.6 85 4569 00 41 21 00 42 50 J1143+1834 18 00 05 9.9 286.1 6.3 47.3 -5 4569 No stop 00 44 20 --- 18 01 35 9.6 286.4 6.3 47.2 85 4592 00 42 51 00 44 50 1146+189 18 02 05 10.5 285.7 6.2 47.5 25 4592 00 44 50 00 45 50 --- 18 03 05 10.3 285.8 6.2 47.4 60 4608 00 44 51 00 45 50 J1143+1834 18 03 05 9.4 286.6 6.3 47.1 -5 4608 No stop 00 47 20 --- 18 04 36 9.1 286.8 6.3 47.1 85 4631 00 45 51 00 47 20 1146+189 18 04 36 10.1 286.1 6.2 47.4 -5 4631 No stop 00 48 50 --- 18 06 06 9.8 286.3 6.3 47.3 85 4654 00 47 21 00 50 50 1146+189 18 08 06 9.4 286.6 6.3 47.2 118 4654 00 50 50 00 51 50 --- 18 09 06 9.3 286.8 6.3 47.1 60 4669 00 50 51 ---------- fringe finder & EF pointing ---------- 01 05 50 J1159+2914 18 23 09 15.8 295.3 6.4 48.7 819 4669 01 05 50 01 09 50 =1156+295 18 27 09 15.2 295.9 6.4 48.3 240 4731 01 05 51 05 56 50 J2253+1608 23 14 57 62.5 190.3 0.3 7.8 17014 4731 05 56 50 06 00 00 =2251+158 23 18 07 62.4 192.0 0.4 9.0 190 4779 05 56 51 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess124.K4096 --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 14 Station: URUMQI Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 21992.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 BBC SB= L L U U L L U U L L U U L L U U IF = A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 The following frequency sets based on these setups were used. Frequency Set: 6 Setup file default. Used with PCAL = off LO sum= 22216.00 22216.00 22216.00 22216.00 22280.00 22280.00 22280.00 22280.00 22344.00 22344.00 22344.00 22344.00 22408.00 22408.00 22408.00 22408.00 BBC fr= 224.00 224.00 224.00 224.00 288.00 288.00 288.00 288.00 352.00 352.00 352.00 352.00 416.00 416.00 416.00 416.00 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 6 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * J1143+1834 11 40 50.548716 * 11 43 26.069653 11 44 42.473842 0.00 18 51 17.31565 * 18 34 38.36006 18 26 28.94164 0.00 From catalog imbedded in main SCHED input file. * 1146+189 11 46 02.761062 * 11 48 37.776789 11 49 53.939413 0.00 18 56 49.43689 * 18 40 08.96963 18 31 58.56994 0.00 From catalog imbedded in main SCHED input file. 2251+158 22 51 29.519750 * 22 53 57.747949 22 55 07.753465 0.10 * J2253+1608 15 52 54.34812 * 16 08 53.56095 16 16 25.89881 0.10 From catalog imbedded in main SCHED input file. rfc_2023d Petrov and Kovalev, in preparation 47794 observations 1156+295 11 56 57.786211 * 11 59 31.833912 12 00 47.719496 0.00 * J1159+2914 29 31 25.73880 * 29 14 43.82690 29 06 32.33096 0.00 J1159+29 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 78215 observations. SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Setup file Frequency sets Observing hours (duplicates not shown) Scan Baseline J1143+1834 sess124.K4096 1 2 3 4 5 6 7 9 10 11 12 4.750 191.576 1146+189 sess124.K4096 1 2 3 4 5 6 7 9 10 11 12 4.075 185.349 J2253+1608 sess124.K4096 1 2 3 4 5 6 7 9 10 11 12 0.053 4.803 J1159+2914 sess124.K4096 1 2 3 4 5 6 7 9 10 11 12 0.367 18.833 EFFECT OF SOLAR CORONA The solar corona can cause unstable phases for sources too close to the Sun. SCHED provides warnings at individual scans for distances less than 10 degrees. The distance from the Sun to each source in this schedule is: Source Sun distance (deg) J1143+1834 163.9 1146+189 163.6 J2253+1608 21.4 J1159+2914 152.7 Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes that the Sun will cause amplitude reductions on the longest VLBA baselines at a solar distance of 60deg F^(-0.6) where F is in GHz. For common VLBI bands, this is: 327 MHz 117. deg 610 MHz 81. deg 1.6 GHz 45. deg 2.3 GHz 36. deg 5.0 GHz 23. deg 8.4 GHz 17. deg 15.0 GHz 12. deg 22.0 GHz 9. deg 43.0 GHz 6. deg