COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: Revealing the radio structure of TDE AT2019dsg Exp. Code: EM140B Schedule Version: 3.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Jun Yang, contact person Address: Onsala Space Observatory SE-439 92 Onsala Sweden Phone: +46 31 7725531 EMAIL: jun.yang@chalmers.se Fax: +46 31 7725590 Phone during observation: +46 31 7725531 Observing mode: 2048-16-2 Notes: PI: Prashanth Mohan, Shanghai Astronomical Observatory 2Gbps, 16x32MHz, dual-pol, 2-bit, C-band/5 GHz Kunming added: enough pack space left after vex-files for scheduled observations DBBC2 stations: DDC V107. Schedule for ZELENCHK (Code Zc ) Page 2 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- ---------- Fringe finder ---------- Next scan frequencies: 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 330.49 330.49 330.49 330.49 394.49 394.49 394.49 394.49 458.49 458.49 458.49 458.49 522.49 522.49 522.49 522.49 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 05 30 00 3C345 18 46 19 66.9 630.6 2.0 69.9 0 0 05 30 00 05 35 00 --- 18 51 20 66.0 631.5 2.1 69.9 300 77 05 30 01 ---------- Main calibrator ---------- 05 37 00 J2052+1619 18 53 20 52.6 487.6 -2.0 -36.6 -49 77 05 37 00 05 40 00 --- 18 56 21 53.1 488.6 -2.0 -36.0 131 123 05 37 01 ---------- 50s gap for Tsys ---------- 05 40 50 J2052+1619 18 57 11 53.2 488.9 -1.9 -35.9 44 123 05 40 50 05 41 20 --- 18 57 41 53.2 489.0 -1.9 -35.8 30 131 05 40 51 05 41 50 J2058+1512 18 58 11 51.6 488.3 -2.0 -35.9 13 131 05 41 50 05 44 40 --- 19 01 02 52.0 489.2 -2.0 -35.4 170 174 05 41 51 05 45 10 J2052+1619 19 01 32 53.8 490.3 -1.9 -35.0 13 174 05 45 10 05 45 40 --- 19 02 02 53.8 490.5 -1.9 -34.9 30 182 05 45 11 05 46 10 AT2019DSG 19 02 32 51.6 491.2 -1.9 -34.1 11 182 05 46 10 05 49 00 --- 19 05 22 52.0 492.1 -1.9 -33.5 170 226 05 46 11 05 49 30 J2052+1619 19 05 53 54.4 491.8 -1.8 -34.2 11 226 05 49 30 05 50 00 --- 19 06 23 54.4 491.9 -1.8 -34.0 30 233 05 49 31 05 50 30 AT2019DSG 19 06 53 52.2 492.6 -1.9 -33.2 11 233 05 50 30 05 53 20 --- 19 09 43 52.5 493.6 -1.8 -32.7 170 277 05 50 31 05 53 50 J2052+1619 19 10 13 54.9 493.3 -1.7 -33.2 11 277 05 53 50 05 54 20 --- 19 10 43 55.0 493.4 -1.7 -33.1 30 285 05 53 51 05 54 50 AT2019DSG 19 11 13 52.7 494.1 -1.8 -32.4 11 285 05 54 50 05 57 40 --- 19 14 04 53.1 495.0 -1.7 -31.8 170 328 05 54 51 05 58 10 J2052+1619 19 14 34 55.5 494.8 -1.7 -32.3 11 328 05 58 10 05 58 40 --- 19 15 04 55.6 495.0 -1.6 -32.2 30 336 05 58 11 Schedule for ZELENCHK (Code Zc ) Page 3 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 05 59 10 AT2019DSG 19 15 34 53.3 495.5 -1.7 -31.4 11 336 05 59 10 06 02 00 --- 19 18 25 53.6 496.5 -1.7 -30.8 170 379 05 59 11 06 02 30 J2052+1619 19 18 55 56.1 496.4 -1.6 -31.3 11 379 06 02 30 06 03 00 --- 19 19 25 56.1 496.5 -1.6 -31.2 30 387 06 02 31 06 03 30 AT2019DSG 19 19 55 53.8 497.1 -1.6 -30.5 11 387 06 03 30 06 06 20 --- 19 22 45 54.2 498.1 -1.6 -29.9 170 431 06 03 31 ---------- 50s gap for Tsys ---------- 06 07 10 J2052+1619 19 23 35 56.6 498.1 -1.5 -30.2 31 431 06 07 10 06 07 40 --- 19 24 05 56.7 498.3 -1.5 -30.0 30 438 06 07 11 06 08 10 J2058+1512 19 24 36 55.1 497.3 -1.6 -30.5 13 438 06 08 10 06 11 00 --- 19 27 26 55.4 498.3 -1.5 -29.9 170 482 06 08 11 06 11 30 J2052+1619 19 27 56 57.1 499.8 -1.4 -29.1 13 482 06 11 30 06 12 00 --- 19 28 26 57.2 500.0 -1.4 -29.0 30 490 06 11 31 06 12 30 AT2019DSG 19 28 56 54.9 500.3 -1.5 -28.4 11 490 06 12 30 06 15 20 --- 19 31 47 55.2 501.4 -1.4 -27.7 170 533 06 12 31 06 15 50 J2052+1619 19 32 17 57.6 501.5 -1.4 -28.0 11 533 06 15 50 06 16 20 --- 19 32 47 57.7 501.7 -1.3 -27.8 30 541 06 15 51 06 16 50 AT2019DSG 19 33 17 55.4 502.0 -1.4 -27.3 11 541 06 16 50 06 19 40 --- 19 36 07 55.7 503.0 -1.4 -26.6 170 585 06 16 51 06 20 10 J2052+1619 19 36 38 58.1 503.2 -1.3 -26.8 11 585 06 20 10 06 20 40 --- 19 37 08 58.2 503.4 -1.3 -26.7 30 592 06 20 11 06 21 10 AT2019DSG 19 37 38 55.9 503.6 -1.3 -26.2 11 592 06 21 10 06 24 00 --- 19 40 28 56.2 504.7 -1.3 -25.5 170 636 06 21 11 06 24 30 J2052+1619 19 40 58 58.6 505.0 -1.2 -25.6 11 636 06 24 30 06 25 00 --- 19 41 28 58.6 505.2 -1.2 -25.4 30 644 06 24 31 06 25 30 AT2019DSG 19 41 58 56.3 505.3 -1.3 -25.1 11 644 06 25 30 06 28 20 --- 19 44 49 56.6 506.5 -1.2 -24.3 170 687 06 25 31 06 28 50 J2052+1619 19 45 19 59.0 506.8 -1.1 -24.3 11 687 06 28 50 06 29 20 --- 19 45 49 59.1 507.0 -1.1 -24.2 30 695 06 28 51 Schedule for ZELENCHK (Code Zc ) Page 4 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 06 29 50 AT2019DSG 19 46 19 56.8 507.1 -1.2 -23.9 11 695 06 29 50 06 32 40 --- 19 49 10 57.0 508.2 -1.1 -23.1 170 738 06 29 51 ---------- 50s gap for Tsys ---------- 06 33 30 J2052+1619 19 50 00 59.5 508.8 -1.1 -22.9 31 738 06 33 30 06 34 00 --- 19 50 30 59.5 509.0 -1.1 -22.8 30 746 06 33 31 06 34 30 J2058+1512 19 51 00 58.0 507.5 -1.1 -23.7 14 746 06 34 30 06 37 20 --- 19 53 50 58.2 508.7 -1.1 -22.9 170 790 06 34 31 06 37 50 J2052+1619 19 54 20 59.9 510.7 -1.0 -21.6 13 790 06 37 50 06 38 20 --- 19 54 51 59.9 511.0 -1.0 -21.4 30 797 06 37 51 06 38 50 AT2019DSG 19 55 21 57.6 510.8 -1.0 -21.3 11 797 06 38 50 06 41 40 --- 19 58 11 57.8 512.0 -1.0 -20.5 170 841 06 38 51 06 42 10 J2052+1619 19 58 41 60.2 512.7 -0.9 -20.2 11 841 06 42 10 06 42 40 --- 19 59 11 60.3 512.9 -0.9 -20.0 30 849 06 42 11 06 43 10 AT2019DSG 19 59 41 58.0 512.6 -1.0 -20.0 11 849 06 43 10 06 46 00 --- 20 02 32 58.2 513.9 -0.9 -19.2 170 892 06 43 11 06 46 30 J2052+1619 20 03 02 60.6 514.7 -0.8 -18.8 11 892 06 46 30 06 47 00 --- 20 03 32 60.6 514.9 -0.8 -18.6 30 900 06 46 31 06 47 30 AT2019DSG 20 04 02 58.3 514.5 -0.9 -18.7 11 900 06 47 30 06 50 20 --- 20 06 52 58.5 515.8 -0.9 -17.8 170 944 06 47 31 06 50 50 J2052+1619 20 07 23 60.9 516.7 -0.8 -17.3 11 944 06 50 50 06 51 20 --- 20 07 53 60.9 516.9 -0.8 -17.1 30 951 06 50 51 06 51 50 AT2019DSG 20 08 23 58.6 516.4 -0.8 -17.3 11 951 06 51 50 06 54 40 --- 20 11 13 58.8 517.7 -0.8 -16.4 170 995 06 51 51 06 55 10 J2052+1619 20 11 43 61.2 518.8 -0.7 -15.8 11 995 06 55 10 06 55 40 --- 20 12 13 61.2 519.0 -0.7 -15.6 30 1003 06 55 11 06 56 10 AT2019DSG 20 12 43 58.9 518.4 -0.8 -15.9 11 1003 06 56 10 06 59 00 --- 20 15 34 59.1 519.7 -0.7 -15.0 170 1046 06 56 11 ---------- 50s gap for Tsys ---------- 06 59 50 J2052+1619 20 16 24 61.5 521.0 -0.6 -14.2 31 1046 06 59 50 07 00 20 --- 20 16 54 61.5 521.3 -0.6 -14.0 30 1054 06 59 51 Schedule for ZELENCHK (Code Zc ) Page 5 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 07 00 50 J2058+1512 20 17 24 60.1 519.2 -0.7 -15.4 12 1054 07 00 50 07 03 40 --- 20 20 15 60.3 520.5 -0.7 -14.4 170 1097 07 00 51 07 04 10 J2052+1619 20 20 45 61.7 523.2 -0.5 -12.6 11 1097 07 04 10 07 04 40 --- 20 21 15 61.8 523.4 -0.5 -12.4 30 1105 07 04 11 07 05 10 AT2019DSG 20 21 45 59.5 522.5 -0.6 -12.9 11 1105 07 05 10 07 08 00 --- 20 24 35 59.6 523.8 -0.6 -12.0 170 1149 07 05 11 07 08 30 J2052+1619 20 25 05 62.0 525.3 -0.5 -11.0 11 1149 07 08 30 07 09 00 --- 20 25 36 62.0 525.6 -0.5 -10.8 30 1156 07 08 31 07 09 30 AT2019DSG 20 26 06 59.7 524.6 -0.5 -11.4 12 1156 07 09 30 07 12 20 --- 20 28 56 59.8 525.9 -0.5 -10.5 170 1200 07 09 31 07 12 50 J2052+1619 20 29 26 62.1 527.5 -0.4 -9.4 11 1200 07 12 50 07 13 20 --- 20 29 56 62.2 527.8 -0.4 -9.2 30 1208 07 12 51 07 13 50 AT2019DSG 20 30 26 59.9 526.6 -0.5 -9.9 12 1208 07 13 50 07 16 40 --- 20 33 17 60.0 528.0 -0.4 -8.9 170 1251 07 13 51 07 17 10 J2052+1619 20 33 47 62.3 529.7 -0.3 -7.7 12 1251 07 17 10 07 17 40 --- 20 34 17 62.3 530.0 -0.3 -7.5 30 1259 07 17 11 07 18 10 AT2019DSG 20 34 47 60.1 528.7 -0.4 -8.4 12 1259 07 18 10 07 21 00 --- 20 37 38 60.2 530.1 -0.3 -7.4 170 1303 07 18 11 07 21 30 J2052+1619 20 38 08 62.4 532.0 -0.3 -6.0 12 1303 07 21 30 07 22 00 --- 20 38 38 62.4 532.2 -0.3 -5.9 30 1310 07 21 31 07 22 30 AT2019DSG 20 39 08 60.2 530.8 -0.3 -6.9 12 1310 07 22 30 07 25 20 --- 20 41 58 60.3 532.2 -0.3 -5.8 170 1354 07 22 31 ---------- 50s gap for Tsys ---------- 07 26 10 J2052+1619 20 42 48 62.5 534.4 -0.2 -4.2 32 1354 07 26 10 07 26 40 --- 20 43 18 62.5 534.6 -0.2 -4.0 30 1362 07 26 11 07 27 10 J2058+1512 20 43 49 61.3 532.0 -0.3 -6.0 10 1362 07 27 10 07 30 00 --- 20 46 39 61.4 533.4 -0.2 -4.9 170 1405 07 27 11 07 30 30 J2052+1619 20 47 09 62.6 536.6 -0.1 -2.5 9 1405 07 30 30 07 31 00 --- 20 47 39 62.6 536.9 -0.1 -2.3 30 1413 07 30 31 Schedule for ZELENCHK (Code Zc ) Page 6 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 07 31 30 AT2019DSG 20 48 09 60.4 535.2 -0.2 -3.6 12 1413 07 31 30 07 34 20 --- 20 51 00 60.5 536.6 -0.1 -2.6 170 1456 07 31 31 07 34 50 J2052+1619 20 51 30 62.6 538.9 -0.0 -0.8 12 1456 07 34 50 07 35 20 --- 20 52 00 62.6 539.1 -0.0 -0.6 30 1464 07 34 51 07 35 50 AT2019DSG 20 52 30 60.5 537.3 -0.1 -2.0 12 1464 07 35 50 07 38 40 --- 20 55 20 60.5 538.7 -0.0 -1.0 170 1508 07 35 51 07 39 10 J2052+1619 20 55 51 62.6 541.2 0.0 0.9 11 1508 07 39 10 07 39 40 --- 20 56 21 62.6 541.4 0.0 1.1 30 1515 07 39 11 07 40 10 AT2019DSG 20 56 51 60.5 539.4 -0.0 -0.4 12 1515 07 40 10 07 43 00 --- 20 59 41 60.5 540.8 0.0 0.6 170 1559 07 40 11 07 43 30 J2052+1619 21 00 11 62.6 543.4 0.1 2.6 11 1559 07 43 30 07 44 00 --- 21 00 41 62.6 543.7 0.1 2.8 30 1567 07 43 31 07 44 30 AT2019DSG 21 01 11 60.5 541.6 0.1 1.2 12 1567 07 44 30 07 47 20 --- 21 04 02 60.5 543.0 0.1 2.2 170 1610 07 44 31 07 47 50 J2052+1619 21 04 32 62.5 545.7 0.2 4.3 11 1610 07 47 50 07 48 20 --- 21 05 02 62.5 545.9 0.2 4.5 30 1618 07 47 51 07 48 50 AT2019DSG 21 05 32 60.4 543.7 0.1 2.8 11 1618 07 48 50 07 51 40 --- 21 08 23 60.4 545.1 0.2 3.8 170 1662 07 48 51 ---------- 50s gap for Tsys ---------- 07 52 30 J2052+1619 21 09 13 62.4 548.1 0.3 6.1 30 1662 07 52 30 07 53 00 --- 21 09 43 62.4 548.3 0.3 6.3 30 1669 07 52 31 07 53 30 J2058+1512 21 10 13 61.4 545.3 0.2 4.0 9 1669 07 53 30 07 56 20 --- 21 13 03 61.3 546.7 0.2 5.0 170 1713 07 53 31 07 56 50 J2052+1619 21 13 33 62.3 550.3 0.3 7.7 8 1713 07 56 50 07 57 20 --- 21 14 04 62.3 550.6 0.3 7.9 30 1721 07 56 51 07 57 50 AT2019DSG 21 14 34 60.3 548.1 0.3 6.0 11 1721 07 57 50 08 00 40 --- 21 17 24 60.2 549.5 0.3 7.1 170 1764 07 57 51 08 01 10 J2052+1619 21 17 54 62.1 552.5 0.4 9.4 10 1764 08 01 10 08 01 40 --- 21 18 24 62.1 552.8 0.4 9.6 30 1772 08 01 11 Schedule for ZELENCHK (Code Zc ) Page 7 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 08 02 10 AT2019DSG 21 18 54 60.2 550.2 0.3 7.6 10 1772 08 02 10 08 05 00 --- 21 21 45 60.1 551.6 0.4 8.6 170 1815 08 02 11 08 05 30 J2052+1619 21 22 15 62.0 554.7 0.5 11.0 10 1815 08 05 30 08 06 00 --- 21 22 45 61.9 555.0 0.5 11.2 30 1823 08 05 31 08 06 30 AT2019DSG 21 23 15 60.0 552.3 0.4 9.1 10 1823 08 06 30 08 09 20 --- 21 26 05 59.9 553.7 0.5 10.1 170 1867 08 06 31 08 09 50 J2052+1619 21 26 36 61.7 556.9 0.5 12.6 9 1867 08 09 50 08 10 20 --- 21 27 06 61.7 557.1 0.6 12.8 30 1874 08 09 51 08 10 50 AT2019DSG 21 27 36 59.8 554.4 0.5 10.7 10 1874 08 10 50 08 13 40 --- 21 30 26 59.7 555.7 0.5 11.7 170 1918 08 10 51 08 14 10 J2052+1619 21 30 56 61.5 559.0 0.6 14.2 9 1918 08 14 10 08 14 40 --- 21 31 26 61.5 559.3 0.6 14.4 30 1926 08 14 11 08 15 10 AT2019DSG 21 31 56 59.6 556.4 0.6 12.2 10 1926 08 15 10 08 18 00 --- 21 34 47 59.5 557.8 0.6 13.1 170 1969 08 15 11 ---------- 50s gap for Tsys ---------- 08 18 50 J2052+1619 21 35 37 61.2 561.3 0.7 15.8 29 1969 08 18 50 08 19 20 --- 21 36 07 61.2 561.5 0.7 16.0 30 1977 08 18 51 08 19 50 J2058+1512 21 36 37 60.4 558.3 0.6 13.6 9 1977 08 19 50 08 22 40 --- 21 39 28 60.3 559.6 0.7 14.6 170 2021 08 19 51 08 23 10 J2052+1619 21 39 58 60.9 563.3 0.8 17.3 8 2021 08 23 10 08 23 40 --- 21 40 28 60.9 563.6 0.8 17.5 30 2028 08 23 11 08 24 10 AT2019DSG 21 40 58 59.1 560.6 0.7 15.2 9 2028 08 24 10 08 27 00 --- 21 43 48 58.9 561.9 0.8 16.1 170 2072 08 24 11 08 27 30 J2052+1619 21 44 18 60.6 565.4 0.8 18.8 9 2072 08 27 30 08 28 00 --- 21 44 49 60.5 565.6 0.9 19.0 30 2079 08 27 31 08 28 30 AT2019DSG 21 45 19 58.8 562.6 0.8 16.6 9 2079 08 28 30 08 31 20 --- 21 48 09 58.6 563.8 0.8 17.5 170 2123 08 28 31 08 31 50 J2052+1619 21 48 39 60.2 567.4 0.9 20.2 8 2123 08 31 50 08 32 20 --- 21 49 09 60.2 567.6 0.9 20.4 30 2131 08 31 51 Schedule for ZELENCHK (Code Zc ) Page 8 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 08 32 50 AT2019DSG 21 49 39 58.5 564.5 0.9 18.0 9 2131 08 32 50 08 35 40 --- 21 52 30 58.3 565.7 0.9 18.9 170 2174 08 32 51 08 36 10 J2052+1619 21 53 00 59.9 569.3 1.0 21.6 8 2174 08 36 10 08 36 40 --- 21 53 30 59.8 569.5 1.0 21.8 30 2182 08 36 11 08 37 10 AT2019DSG 21 54 00 58.2 566.4 0.9 19.3 9 2182 08 37 10 08 40 00 --- 21 56 51 57.9 567.6 1.0 20.2 170 2226 08 37 11 08 40 30 J2052+1619 21 57 21 59.5 571.2 1.1 23.0 8 2226 08 40 30 08 41 00 --- 21 57 51 59.4 571.4 1.1 23.1 30 2233 08 40 31 08 41 30 AT2019DSG 21 58 21 57.8 568.3 1.0 20.7 9 2233 08 41 30 08 44 20 --- 22 01 11 57.5 569.5 1.1 21.5 170 2277 08 41 31 ---------- 50s gap for Tsys ---------- 08 45 10 J2052+1619 22 02 01 59.0 573.2 1.1 24.4 28 2277 08 45 10 08 45 40 --- 22 02 31 59.0 573.4 1.1 24.5 30 2285 08 45 11 08 46 10 J2058+1512 22 03 02 58.5 570.2 1.1 22.1 9 2285 08 46 10 08 49 00 --- 22 05 52 58.2 571.4 1.1 23.0 170 2328 08 46 11 08 49 30 J2052+1619 22 06 22 58.6 575.0 1.2 25.6 8 2328 08 49 30 08 50 00 --- 22 06 52 58.5 575.3 1.2 25.7 30 2336 08 49 31 08 50 30 AT2019DSG 22 07 22 57.0 572.0 1.2 23.3 9 2336 08 50 30 08 53 20 --- 22 10 13 56.7 573.2 1.2 24.1 170 2379 08 50 31 08 53 50 J2052+1619 22 10 43 58.1 576.8 1.3 26.8 8 2379 08 53 50 08 54 20 --- 22 11 13 58.1 577.0 1.3 27.0 30 2387 08 53 51 08 54 50 AT2019DSG 22 11 43 56.6 573.8 1.2 24.5 9 2387 08 54 50 08 57 40 --- 22 14 33 56.3 574.9 1.3 25.2 170 2431 08 54 51 08 58 10 J2052+1619 22 15 03 57.6 578.6 1.4 28.0 8 2431 08 58 10 08 58 40 --- 22 15 34 57.6 578.8 1.4 28.1 30 2438 08 58 11 08 59 10 AT2019DSG 22 16 04 56.1 575.5 1.3 25.6 9 2438 08 59 10 09 02 00 --- 22 18 54 55.8 576.6 1.3 26.4 170 2482 08 59 11 09 02 30 J2052+1619 22 19 24 57.1 580.3 1.4 29.1 8 2482 09 02 30 09 03 00 --- 22 19 54 57.1 580.5 1.4 29.2 30 2490 09 02 31 Schedule for ZELENCHK (Code Zc ) Page 9 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 09 03 30 AT2019DSG 22 20 24 55.6 577.2 1.4 26.8 9 2490 09 03 30 09 06 20 --- 22 23 15 55.3 578.3 1.4 27.5 170 2533 09 03 31 09 06 50 J2052+1619 22 23 45 56.6 581.9 1.5 30.2 8 2533 09 06 50 09 07 20 --- 22 24 15 56.6 582.1 1.5 30.3 30 2541 09 06 51 09 07 50 AT2019DSG 22 24 45 55.2 578.8 1.4 27.8 9 2541 09 07 50 09 10 40 --- 22 27 36 54.8 579.9 1.5 28.5 170 2585 09 07 51 ---------- 50s gap for Tsys ---------- 09 11 30 J2052+1619 22 28 26 56.1 583.7 1.6 31.3 28 2585 09 11 30 09 12 00 --- 22 28 56 56.0 583.8 1.6 31.4 30 2592 09 11 31 09 12 30 J2058+1512 22 29 26 55.7 580.8 1.5 29.3 9 2592 09 12 30 09 15 20 --- 22 32 16 55.4 581.8 1.5 29.9 170 2636 09 12 31 09 15 50 J2052+1619 22 32 46 55.5 585.2 1.7 32.3 9 2636 09 15 50 09 16 20 --- 22 33 16 55.4 585.4 1.7 32.4 30 2644 09 15 51 09 16 50 AT2019DSG 22 33 47 54.1 582.1 1.6 30.0 9 2644 09 16 50 09 19 40 --- 22 36 37 53.8 583.2 1.6 30.6 170 2687 09 16 51 09 20 10 J2052+1619 22 37 07 54.9 586.8 1.7 33.3 8 2687 09 20 10 09 20 40 --- 22 37 37 54.9 587.0 1.7 33.4 30 2695 09 20 11 09 21 10 AT2019DSG 22 38 07 53.6 583.7 1.7 31.0 9 2695 09 21 10 09 24 00 --- 22 40 58 53.2 584.7 1.7 31.6 170 2738 09 21 11 09 24 30 J2052+1619 22 41 28 54.4 588.3 1.8 34.2 8 2738 09 24 30 09 25 00 --- 22 41 58 54.3 588.4 1.8 34.3 30 2746 09 24 31 09 25 30 AT2019DSG 22 42 28 53.0 585.2 1.7 31.9 9 2746 09 25 30 09 28 20 --- 22 45 18 52.6 586.1 1.8 32.5 170 2790 09 25 31 09 28 50 J2052+1619 22 45 49 53.8 589.7 1.9 35.0 8 2790 09 28 50 09 29 20 --- 22 46 19 53.7 589.9 1.9 35.1 30 2797 09 28 51 09 29 50 AT2019DSG 22 46 49 52.5 586.7 1.8 32.8 9 2797 09 29 50 09 32 40 --- 22 49 39 52.1 587.6 1.9 33.4 170 2841 09 29 51 09 33 10 J2052+1619 22 50 09 53.2 591.2 1.9 35.9 8 2841 09 33 10 09 33 40 --- 22 50 39 53.1 591.3 2.0 36.0 30 2849 09 33 11 Schedule for ZELENCHK (Code Zc ) Page 10 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 09 34 10 AT2019DSG 22 51 09 51.9 588.1 1.9 33.7 9 2849 09 34 10 09 37 00 --- 22 54 00 51.5 589.0 1.9 34.2 170 2892 09 34 11 ---------- Main calibrator ---------- 09 37 30 J2052+1619 22 54 30 52.5 592.6 2.0 36.7 8 2892 09 37 30 09 38 00 --- 22 55 00 52.5 592.7 2.0 36.8 30 2900 09 37 31 09 38 30 J2058+1512 22 55 30 52.3 589.9 1.9 34.9 10 2900 09 38 30 09 41 20 --- 22 58 21 51.9 590.8 2.0 35.4 170 2944 09 38 31 09 41 50 J2052+1619 22 58 51 51.9 593.9 2.1 37.5 9 2944 09 41 50 09 42 20 --- 22 59 21 51.8 594.1 2.1 37.5 30 2951 09 41 51 ---------- Ef out to check pointing ---------- 09 45 20 3C454.3 23 02 21 62.4 543.9 0.1 2.9 104 2951 09 45 20 09 50 20 --- 23 07 22 62.3 546.4 0.2 4.8 300 3028 09 45 21 ---------- Ef in ---------- 09 53 00 J2052+1619 23 10 03 50.3 597.3 2.3 39.3 85 3028 09 53 00 09 54 00 --- 23 11 03 50.1 597.6 2.3 39.4 60 3044 09 53 01 ---------- 50s gap for Tsys ---------- 09 54 50 J2052+1619 23 11 53 50.0 597.8 2.3 39.5 44 3044 09 54 50 09 55 20 --- 23 12 23 49.9 597.9 2.3 39.6 30 3051 09 54 51 09 55 50 J2058+1512 23 12 53 49.9 595.2 2.2 37.9 10 3051 09 55 50 09 58 40 --- 23 15 43 49.4 596.1 2.3 38.4 170 3095 09 55 51 09 59 10 J2052+1619 23 16 14 49.3 599.0 2.4 40.2 10 3095 09 59 10 09 59 40 --- 23 16 44 49.2 599.2 2.4 40.3 30 3103 09 59 11 10 00 10 AT2019DSG 23 17 14 48.2 596.0 2.3 38.2 9 3103 10 00 10 10 03 00 --- 23 20 04 47.7 596.9 2.4 38.6 170 3146 10 00 11 10 03 30 J2052+1619 23 20 34 48.6 600.2 2.4 40.8 9 3146 10 03 30 10 04 00 --- 23 21 04 48.5 600.4 2.5 40.9 30 3154 10 03 31 10 04 30 AT2019DSG 23 21 34 47.5 597.3 2.4 38.8 9 3154 10 04 30 10 07 20 --- 23 24 25 47.1 598.1 2.4 39.2 170 3197 10 04 31 Schedule for ZELENCHK (Code Zc ) Page 11 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 10 07 50 J2052+1619 23 24 55 47.9 601.4 2.5 41.4 9 3197 10 07 50 10 08 20 --- 23 25 25 47.9 601.6 2.5 41.4 30 3205 10 07 51 10 08 50 AT2019DSG 23 25 55 46.8 598.5 2.5 39.4 9 3205 10 08 50 10 11 40 --- 23 28 46 46.4 599.3 2.5 39.8 170 3249 10 08 51 10 12 10 J2052+1619 23 29 16 47.2 602.6 2.6 41.9 9 3249 10 12 10 10 12 40 --- 23 29 46 47.2 602.7 2.6 42.0 30 3256 10 12 11 10 13 10 AT2019DSG 23 30 16 46.2 599.7 2.5 40.0 9 3256 10 13 10 10 16 00 --- 23 33 06 45.7 600.4 2.6 40.4 170 3300 10 13 11 10 16 30 J2052+1619 23 33 36 46.5 603.7 2.7 42.4 9 3300 10 16 30 10 17 00 --- 23 34 06 46.5 603.8 2.7 42.5 30 3308 10 16 31 10 17 30 AT2019DSG 23 34 37 45.5 600.8 2.6 40.6 9 3308 10 17 30 10 20 20 --- 23 37 27 45.0 601.5 2.7 40.9 170 3351 10 17 31 ---------- 50s gap for Tsys ---------- 10 21 10 J2052+1619 23 38 17 45.8 604.9 2.7 43.0 29 3351 10 21 10 10 21 40 --- 23 38 47 45.7 605.0 2.8 43.0 30 3359 10 21 11 10 22 10 J2058+1512 23 39 17 45.8 602.5 2.7 41.6 11 3359 10 22 10 10 25 00 --- 23 42 08 45.3 603.3 2.7 41.9 170 3403 10 22 11 10 25 30 J2052+1619 23 42 38 45.1 606.0 2.8 43.4 10 3403 10 25 30 10 26 00 --- 23 43 08 45.0 606.1 2.8 43.5 30 3410 10 25 31 10 26 30 AT2019DSG 23 43 38 44.1 603.1 2.8 41.6 9 3410 10 26 30 10 29 20 --- 23 46 28 43.6 603.8 2.8 42.0 170 3454 10 26 31 10 29 50 J2052+1619 23 46 59 44.4 607.0 2.9 43.9 9 3454 10 29 50 10 30 20 --- 23 47 29 44.3 607.2 2.9 43.9 30 3462 10 29 51 10 30 50 AT2019DSG 23 47 59 43.3 604.2 2.8 42.1 9 3462 10 30 50 10 33 40 --- 23 50 49 42.9 604.9 2.9 42.4 170 3505 10 30 51 10 34 10 J2052+1619 23 51 19 43.6 608.1 3.0 44.3 9 3505 10 34 10 10 34 40 --- 23 51 49 43.5 608.2 3.0 44.3 30 3513 10 34 11 10 35 10 AT2019DSG 23 52 19 42.6 605.3 2.9 42.6 10 3513 10 35 10 10 38 00 --- 23 55 10 42.2 606.0 3.0 42.9 170 3556 10 35 11 Schedule for ZELENCHK (Code Zc ) Page 12 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 10 38 30 J2052+1619 23 55 40 42.9 609.1 3.0 44.7 9 3556 10 38 30 10 39 00 --- 23 56 10 42.8 609.2 3.0 44.7 30 3564 10 38 31 10 39 30 AT2019DSG 23 56 40 41.9 606.3 3.0 43.0 10 3564 10 39 30 10 42 20 --- 23 59 31 41.5 607.0 3.0 43.3 170 3608 10 39 31 10 42 50 J2052+1619 00 00 01 42.2 610.1 3.1 45.0 9 3608 10 42 50 10 43 20 --- 00 00 31 42.1 610.2 3.1 45.1 30 3615 10 42 51 10 43 50 AT2019DSG 00 01 01 41.2 607.3 3.1 43.4 10 3615 10 43 50 10 46 40 --- 00 03 51 40.7 608.0 3.1 43.7 170 3659 10 43 51 ---------- 50s gap for Tsys ---------- 10 47 30 J2052+1619 00 04 41 41.4 611.2 3.2 45.4 29 3659 10 47 30 10 48 00 --- 00 05 12 41.3 611.3 3.2 45.5 30 3667 10 47 31 10 48 30 J2058+1512 00 05 42 41.4 609.0 3.1 44.3 11 3667 10 48 30 10 51 20 --- 00 08 32 40.9 609.6 3.1 44.5 170 3710 10 48 31 10 51 50 J2052+1619 00 09 02 40.6 612.1 3.3 45.7 11 3710 10 51 50 10 52 20 --- 00 09 32 40.5 612.2 3.3 45.8 30 3718 10 51 51 10 52 50 AT2019DSG 00 10 02 39.7 609.4 3.2 44.2 10 3718 10 52 50 10 55 40 --- 00 12 53 39.2 610.1 3.2 44.4 170 3762 10 52 51 10 56 10 J2052+1619 00 13 23 39.9 613.1 3.3 46.1 10 3762 10 56 10 10 56 40 --- 00 13 53 39.8 613.2 3.3 46.1 30 3769 10 56 11 10 57 10 AT2019DSG 00 14 23 39.0 610.4 3.3 44.6 10 3769 10 57 10 11 00 00 --- 00 17 14 38.5 611.0 3.3 44.8 170 3813 10 57 11 11 00 30 J2052+1619 00 17 44 39.1 614.0 3.4 46.3 10 3813 11 00 30 11 01 00 --- 00 18 14 39.0 614.1 3.4 46.4 30 3821 11 00 31 11 01 30 AT2019DSG 00 18 44 38.2 611.3 3.3 44.9 10 3821 11 01 30 11 04 20 --- 00 21 34 37.7 612.0 3.4 45.1 170 3864 11 01 31 11 04 50 J2052+1619 00 22 04 38.4 614.9 3.5 46.6 10 3864 11 04 50 11 05 20 --- 00 22 34 38.3 615.0 3.5 46.6 30 3872 11 04 51 11 05 50 AT2019DSG 00 23 04 37.5 612.3 3.4 45.2 10 3872 11 05 50 11 08 40 --- 00 25 55 37.0 612.9 3.5 45.4 170 3915 11 05 51 Schedule for ZELENCHK (Code Zc ) Page 13 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 11 09 10 J2052+1619 00 26 25 37.6 615.8 3.5 46.9 10 3915 11 09 10 11 09 40 --- 00 26 55 37.5 615.9 3.6 46.9 30 3923 11 09 11 11 10 10 AT2019DSG 00 27 25 36.7 613.2 3.5 45.5 10 3923 11 10 10 11 13 00 --- 00 30 16 36.2 613.8 3.5 45.7 170 3967 11 10 11 ---------- 50s gap for Tsys ---------- 11 13 50 J2052+1619 00 31 06 36.8 616.8 3.6 47.1 30 3967 11 13 50 11 14 20 --- 00 31 36 36.7 616.9 3.6 47.1 30 3974 11 13 51 11 14 50 J2058+1512 00 32 06 36.9 614.7 3.5 46.2 12 3974 11 14 50 11 17 40 --- 00 34 56 36.4 615.3 3.6 46.4 170 4018 11 14 51 11 18 10 J2052+1619 00 35 26 36.0 617.7 3.7 47.3 11 4018 11 18 10 11 18 40 --- 00 35 57 35.9 617.8 3.7 47.3 30 4026 11 18 11 11 19 10 AT2019DSG 00 36 27 35.2 615.1 3.6 46.0 10 4026 11 19 10 11 22 00 --- 00 39 17 34.7 615.7 3.7 46.2 170 4069 11 19 11 11 22 30 J2052+1619 00 39 47 35.3 618.5 3.8 47.5 10 4069 11 22 30 11 23 00 --- 00 40 17 35.2 618.6 3.8 47.5 30 4077 11 22 31 11 23 30 AT2019DSG 00 40 47 34.4 616.0 3.7 46.3 10 4077 11 23 30 11 26 20 --- 00 43 38 33.9 616.6 3.8 46.4 170 4121 11 23 31 11 26 50 J2052+1619 00 44 08 34.5 619.4 3.8 47.7 10 4121 11 26 50 11 27 20 --- 00 44 38 34.4 619.5 3.9 47.7 30 4128 11 26 51 11 27 50 AT2019DSG 00 45 08 33.6 616.9 3.8 46.5 10 4128 11 27 50 11 30 40 --- 00 47 59 33.1 617.4 3.8 46.6 170 4172 11 27 51 11 31 10 J2052+1619 00 48 29 33.7 620.2 3.9 47.9 10 4172 11 31 10 11 31 40 --- 00 48 59 33.6 620.3 3.9 47.9 30 4179 11 31 11 11 32 10 AT2019DSG 00 49 29 32.9 617.7 3.9 46.7 10 4179 11 32 10 11 35 00 --- 00 52 19 32.4 618.3 3.9 46.8 170 4223 11 32 11 11 35 30 J2052+1619 00 52 49 32.9 621.1 4.0 48.0 10 4223 11 35 30 11 36 00 --- 00 53 19 32.9 621.2 4.0 48.0 30 4231 11 35 31 11 36 30 AT2019DSG 00 53 50 32.1 618.6 3.9 46.9 10 4231 11 36 30 11 39 20 --- 00 56 40 31.6 619.1 4.0 47.0 170 4274 11 36 31 Schedule for ZELENCHK (Code Zc ) Page 14 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- ---------- 50s gap for Tsys ---------- 11 40 10 J2052+1619 00 57 30 32.1 622.0 4.1 48.2 30 4274 11 40 10 11 40 40 --- 00 58 00 32.0 622.1 4.1 48.2 30 4282 11 40 11 11 41 10 J2058+1512 00 58 30 32.3 620.0 4.0 47.5 12 4282 11 41 10 11 44 00 --- 01 01 21 31.7 620.6 4.0 47.6 170 4326 11 41 11 11 44 30 J2052+1619 01 01 51 31.3 622.8 4.1 48.3 12 4326 11 44 30 11 45 00 --- 01 02 21 31.2 622.9 4.1 48.3 30 4333 11 44 31 11 45 30 AT2019DSG 01 02 51 30.5 620.3 4.1 47.3 11 4333 11 45 30 11 48 20 --- 01 05 41 30.0 620.9 4.1 47.3 170 4377 11 45 31 11 48 50 J2052+1619 01 06 12 30.6 623.6 4.2 48.4 10 4377 11 48 50 11 49 20 --- 01 06 42 30.5 623.7 4.2 48.4 30 4385 11 48 51 11 49 50 AT2019DSG 01 07 12 29.7 621.2 4.2 47.4 11 4385 11 49 50 11 52 40 --- 01 10 02 29.2 621.7 4.2 47.5 170 4428 11 49 51 11 53 10 J2052+1619 01 10 32 29.8 624.4 4.3 48.5 10 4428 11 53 10 11 53 40 --- 01 11 02 29.7 624.5 4.3 48.5 30 4436 11 53 11 11 54 10 AT2019DSG 01 11 32 28.9 622.0 4.2 47.5 11 4436 11 54 10 11 57 00 --- 01 14 23 28.4 622.5 4.3 47.6 170 4479 11 54 11 11 57 30 J2052+1619 01 14 53 29.0 625.2 4.4 48.6 10 4479 11 57 30 11 58 00 --- 01 15 23 28.9 625.3 4.4 48.6 30 4487 11 57 31 11 58 30 AT2019DSG 01 15 53 28.2 622.8 4.3 47.6 11 4487 11 58 30 12 01 20 --- 01 18 44 27.7 623.3 4.3 47.7 170 4531 11 58 31 12 01 50 J2052+1619 01 19 14 28.2 626.0 4.4 48.6 11 4531 12 01 50 12 02 20 --- 01 19 44 28.1 626.1 4.4 48.7 30 4538 12 01 51 12 02 50 AT2019DSG 01 20 14 27.4 623.6 4.4 47.8 11 4538 12 02 50 12 05 40 --- 01 23 04 26.9 624.1 4.4 47.8 170 4582 12 02 51 ---------- 50s gap for Tsys ---------- 12 06 30 J2052+1619 01 23 54 27.4 626.8 4.5 48.7 31 4582 12 06 30 12 07 00 --- 01 24 25 27.3 626.9 4.5 48.7 30 4590 12 06 31 12 07 30 J2058+1512 01 24 55 27.5 625.0 4.4 48.2 12 4590 12 07 30 12 10 20 --- 01 27 45 27.0 625.5 4.5 48.2 170 4633 12 07 31 Schedule for ZELENCHK (Code Zc ) Page 15 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 12 10 50 J2052+1619 01 28 15 26.6 627.6 4.6 48.8 12 4633 12 10 50 12 11 20 --- 01 28 45 26.5 627.7 4.6 48.8 30 4641 12 10 51 12 11 50 AT2019DSG 01 29 15 25.8 625.2 4.5 47.9 11 4641 12 11 50 12 14 40 --- 01 32 06 25.3 625.7 4.6 48.0 170 4685 12 11 51 12 15 10 J2052+1619 01 32 36 25.8 628.3 4.6 48.8 11 4685 12 15 10 12 15 40 --- 01 33 06 25.7 628.4 4.7 48.8 30 4692 12 15 11 12 16 10 AT2019DSG 01 33 36 25.0 626.0 4.6 48.0 11 4692 12 16 10 12 19 00 --- 01 36 26 24.5 626.5 4.6 48.0 170 4736 12 16 11 12 19 30 J2052+1619 01 36 57 25.0 629.1 4.7 48.8 11 4736 12 19 30 12 20 00 --- 01 37 27 24.9 629.2 4.7 48.8 30 4744 12 19 31 12 20 30 AT2019DSG 01 37 57 24.2 626.8 4.7 48.1 11 4744 12 20 30 12 23 20 --- 01 40 47 23.7 627.3 4.7 48.1 170 4787 12 20 31 12 23 50 J2052+1619 01 41 17 24.2 629.9 4.8 48.8 11 4787 12 23 50 12 24 20 --- 01 41 47 24.1 629.9 4.8 48.8 30 4795 12 23 51 12 24 50 AT2019DSG 01 42 17 23.4 627.5 4.7 48.1 11 4795 12 24 50 12 27 40 --- 01 45 08 22.9 628.0 4.8 48.1 170 4838 12 24 51 12 28 10 J2052+1619 01 45 38 23.4 630.6 4.9 48.8 11 4838 12 28 10 12 28 40 --- 01 46 08 23.4 630.7 4.9 48.8 30 4846 12 28 11 12 29 10 AT2019DSG 01 46 38 22.6 628.3 4.8 48.1 11 4846 12 29 10 12 32 00 --- 01 49 29 22.1 628.8 4.9 48.1 170 4890 12 29 11 ---------- 50s gap for Tsys ---------- 12 32 50 J2052+1619 01 50 19 22.6 631.4 4.9 48.8 31 4890 12 32 50 12 33 20 --- 01 50 49 22.5 631.5 5.0 48.8 30 4897 12 32 51 12 33 50 J2058+1512 01 51 19 22.8 629.6 4.9 48.4 13 4897 12 33 50 12 36 40 --- 01 54 09 22.3 630.1 4.9 48.4 170 4941 12 33 51 12 37 10 J2052+1619 01 54 39 21.8 632.2 5.0 48.8 12 4941 12 37 10 12 37 40 --- 01 55 10 21.7 632.2 5.0 48.8 30 4949 12 37 11 12 38 10 AT2019DSG 01 55 40 21.0 629.9 5.0 48.2 11 4949 12 38 10 12 41 00 --- 01 58 30 20.5 630.4 5.0 48.2 170 4992 12 38 11 Schedule for ZELENCHK (Code Zc ) Page 16 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 12 41 30 J2052+1619 01 59 00 21.0 632.9 5.1 48.7 11 4992 12 41 30 12 42 00 --- 01 59 30 20.9 633.0 5.1 48.7 30 5000 12 41 31 12 42 30 AT2019DSG 02 00 00 20.2 630.6 5.0 48.1 11 5000 12 42 30 12 45 20 --- 02 02 51 19.7 631.1 5.1 48.1 170 5044 12 42 31 12 45 50 J2052+1619 02 03 21 20.3 633.6 5.2 48.7 11 5044 12 45 50 12 46 20 --- 02 03 51 20.2 633.7 5.2 48.7 30 5051 12 45 51 12 46 50 AT2019DSG 02 04 21 19.4 631.4 5.1 48.1 11 5051 12 46 50 12 49 40 --- 02 07 12 18.9 631.9 5.2 48.1 170 5095 12 46 51 12 50 10 J2052+1619 02 07 42 19.5 634.4 5.2 48.6 11 5095 12 50 10 12 50 40 --- 02 08 12 19.4 634.4 5.2 48.6 30 5103 12 50 11 12 51 10 AT2019DSG 02 08 42 18.7 632.1 5.2 48.1 11 5103 12 51 10 12 54 00 --- 02 11 32 18.1 632.6 5.2 48.1 170 5146 12 51 11 12 54 30 J2052+1619 02 12 02 18.7 635.1 5.3 48.6 11 5146 12 54 30 12 55 00 --- 02 12 32 18.6 635.2 5.3 48.5 30 5154 12 54 31 12 55 30 AT2019DSG 02 13 02 17.9 632.9 5.3 48.1 11 5154 12 55 30 12 58 20 --- 02 15 53 17.4 633.3 5.3 48.0 170 5197 12 55 31 ---------- 50s gap for Tsys ---------- 12 59 10 J2052+1619 02 16 43 17.8 635.9 5.4 48.5 31 5197 12 59 10 12 59 40 --- 02 17 13 17.8 636.0 5.4 48.5 30 5205 12 59 11 13 00 10 J2058+1512 02 17 43 18.0 634.1 5.3 48.3 13 5205 13 00 10 13 03 00 --- 02 20 34 17.5 634.6 5.3 48.2 170 5249 13 00 11 13 03 30 J2052+1619 02 21 04 17.1 636.6 5.5 48.4 13 5249 13 03 30 13 04 00 --- 02 21 34 17.0 636.7 5.5 48.4 30 5256 13 03 31 13 04 30 AT2019DSG 02 22 04 16.2 634.4 5.4 48.0 11 5256 13 04 30 13 07 20 --- 02 24 54 15.7 634.9 5.4 47.9 170 5300 13 04 31 13 07 50 J2052+1619 02 25 25 16.3 637.3 5.5 48.3 11 5300 13 07 50 13 08 20 --- 02 25 55 16.2 637.4 5.5 48.3 30 5308 13 07 51 13 08 50 AT2019DSG 02 26 25 15.5 635.1 5.5 47.9 11 5308 13 08 50 13 11 40 --- 02 29 15 15.0 635.6 5.5 47.8 170 5351 13 08 51 Schedule for ZELENCHK (Code Zc ) Page 17 Revealing the radio structure of TDE AT2019dsg 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2020 Day 59 --- 13 12 10 J2052+1619 02 29 45 15.5 638.0 5.6 48.2 11 5351 13 12 10 13 12 40 --- 02 30 15 15.4 638.1 5.6 48.2 30 5359 13 12 11 13 13 10 AT2019DSG 02 30 45 14.7 635.9 5.5 47.8 11 5359 13 13 10 13 16 00 --- 02 33 36 14.2 636.3 5.6 47.8 170 5403 13 13 11 13 16 30 J2052+1619 02 34 06 14.7 638.8 5.7 48.1 11 5403 13 16 30 13 17 00 --- 02 34 36 14.6 638.8 5.7 48.0 30 5410 13 16 31 13 17 30 AT2019DSG 02 35 06 13.9 636.6 5.6 47.7 11 5410 13 17 30 13 20 20 --- 02 37 57 13.4 637.1 5.7 47.7 170 5454 13 17 31 13 20 50 J2052+1619 02 38 27 14.0 639.5 5.7 47.9 11 5454 13 20 50 13 21 20 --- 02 38 57 13.9 639.6 5.8 47.9 30 5462 13 20 51 13 21 50 AT2019DSG 02 39 27 13.1 637.3 5.7 47.6 11 5462 13 21 50 13 24 40 --- 02 42 17 12.6 637.8 5.7 47.6 170 5505 13 21 51 13 25 10 J2052+1619 02 42 47 13.2 640.2 5.8 47.8 11 5505 13 25 10 13 25 40 --- 02 43 17 13.1 640.3 5.8 47.8 30 5513 13 25 11 13 26 10 J2058+1512 02 43 48 13.3 638.5 5.7 47.7 13 5513 13 26 10 13 29 00 --- 02 46 38 12.8 639.0 5.8 47.7 170 5556 13 26 11 13 29 30 J2052+1619 02 47 08 12.4 640.9 5.9 47.6 13 5556 13 29 30 13 30 00 --- 02 47 38 12.3 641.0 5.9 47.6 30 5564 13 29 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess120.C2048 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: kvzr_c Added by Des Small, 24 February 2012 Setup group: 2 Station: ZELENCHK Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 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 = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 330.49 330.49 330.49 330.49 394.49 394.49 394.49 394.49 458.49 458.49 458.49 458.49 522.49 522.49 522.49 522.49 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: 9 10 11 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) * AT2019DSG 20 54 41.265069 * 20 57 02.965020 20 57 57.914266 12.00 14 00 40.58052 * 14 12 16.28980 14 16 45.26400 4.00 From catalog imbedded in main SCHED input file. From ATel 13105, e-MERLIN observations, 0.35 mJy on 2019 Jun 20 * J2058+1512 20 56 24.919674 * 20 58 45.819173 20 59 40.443962 2.08 15 00 32.08468 * 15 12 13.18646 15 16 44.22055 3.10 From catalog imbedded in main SCHED input file. rfc_2019c Petrov and Kovalev, in preparation 6 observations * J2052+1619 20 50 24.087782 * 20 52 43.619855 20 53 37.709826 0.14 16 08 26.79250 * 16 19 48.82816 16 24 12.11140 0.21 From catalog imbedded in main SCHED input file. rfc_2019c Petrov and Kovalev, in preparation 337 observations * 3C345 16 41 17.606229 * 16 42 58.809967 16 43 38.812600 0.79 J1642+3948 39 54 10.81492 * 39 48 36.99399 39 46 08.55860 0.59 1641+399 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1642+39 GSFC 2016a X/S astro solution, 53724 observations. * 3C454.3 22 51 29.519739 * 22 53 57.747939 22 54 55.236124 0.65 J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 08.28855 0.73 2251+158 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 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 AT2019DSG sess120.C2048 1 2 3 4 5 6 7 8 9 13 14 4.014 272.745 J2058+1512 sess120.C2048 1 2 3 4 5 6 7 8 9 13 14 0.897 61.250 J2052+1619 sess120.C2048 1 2 3 4 5 6 7 8 9 13 14 0.950 60.218 3C345 sess120.C2048 1 2 3 4 5 6 7 8 9 13 0.083 6.500 3C454.3 sess120.C2048 1 2 4 5 6 7 8 9 13 14 0.083 6.500 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) AT2019DSG 34.4 J2058+1512 34.7 J2052+1619 36.6 3C345 95.1 3C454.3 24.5 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