COVER INFORMATION Station: TIANMA65 (Code T6 ) 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 TIANMA65 (Code T6 ) 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 --- ---------- Main calibrator ---------- 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: 630.49 630.49 630.49 630.49 694.49 694.49 694.49 694.49 758.49 758.49 758.49 758.49 822.49 822.49 822.49 822.49 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 37 00 J2052+1619 00 11 37 42.8 263.7 3.3 62.5 0 0 05 37 00 05 40 00 --- 00 14 38 42.2 264.2 3.4 62.6 180 46 05 37 01 ---------- 50s gap for Tsys ---------- 05 40 50 J2052+1619 00 15 28 42.0 264.3 3.4 62.7 48 46 05 40 50 05 41 20 --- 00 15 58 41.9 264.4 3.4 62.7 30 54 05 40 51 05 41 50 J2058+1512 00 16 28 42.5 262.2 3.3 61.6 23 54 05 41 50 05 44 40 --- 00 19 19 41.9 262.7 3.3 61.7 170 98 05 41 51 05 45 10 J2052+1619 00 19 49 41.0 265.0 3.4 62.8 24 98 05 45 10 05 45 40 --- 00 20 19 40.9 265.0 3.4 62.8 30 106 05 45 11 05 46 10 AT2019DSG 00 20 49 40.8 262.0 3.4 61.0 22 106 05 46 10 05 49 00 --- 00 23 39 40.2 262.4 3.4 61.2 170 149 05 46 11 05 49 30 J2052+1619 00 24 10 40.1 265.6 3.5 62.9 22 149 05 49 30 05 50 00 --- 00 24 40 40.0 265.7 3.5 62.9 30 157 05 49 31 05 50 30 AT2019DSG 00 25 10 39.8 262.6 3.5 61.2 22 157 05 50 30 05 53 20 --- 00 28 00 39.2 263.1 3.5 61.3 170 201 05 50 31 05 53 50 J2052+1619 00 28 30 39.2 266.2 3.6 63.0 22 201 05 53 50 05 54 20 --- 00 29 00 39.1 266.3 3.6 63.0 30 209 05 53 51 05 54 50 AT2019DSG 00 29 30 38.9 263.3 3.5 61.4 22 209 05 54 50 05 57 40 --- 00 32 21 38.3 263.7 3.6 61.4 170 252 05 54 51 05 58 10 J2052+1619 00 32 51 38.3 266.8 3.7 63.0 22 252 05 58 10 05 58 40 --- 00 33 21 38.2 266.9 3.7 63.0 30 260 05 58 11 05 59 10 AT2019DSG 00 33 51 38.0 263.9 3.6 61.5 22 260 05 59 10 06 02 00 --- 00 36 42 37.4 264.4 3.6 61.6 170 304 05 59 11 06 02 30 J2052+1619 00 37 12 37.3 267.4 3.7 63.1 22 304 06 02 30 06 03 00 --- 00 37 42 37.2 267.5 3.7 63.1 30 312 06 02 31 Schedule for TIANMA65 (Code T6 ) 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 --- 06 03 30 AT2019DSG 00 38 12 37.1 264.6 3.7 61.6 22 312 06 03 30 06 06 20 --- 00 41 02 36.5 265.0 3.7 61.7 170 356 06 03 31 ---------- 50s gap for Tsys ---------- 06 07 10 J2052+1619 00 41 52 36.3 268.0 3.8 63.1 42 356 06 07 10 06 07 40 --- 00 42 22 36.2 268.1 3.8 63.1 30 363 06 07 11 06 08 10 J2058+1512 00 42 53 36.9 266.1 3.7 62.3 24 363 06 08 10 06 11 00 --- 00 45 43 36.3 266.5 3.8 62.4 170 407 06 08 11 06 11 30 J2052+1619 00 46 13 35.4 268.6 3.9 63.2 24 407 06 11 30 06 12 00 --- 00 46 43 35.3 268.7 3.9 63.2 30 415 06 11 31 06 12 30 AT2019DSG 00 47 13 35.1 265.9 3.8 61.8 22 415 06 12 30 06 15 20 --- 00 50 04 34.5 266.3 3.9 61.9 170 459 06 12 31 06 15 50 J2052+1619 00 50 34 34.5 269.2 3.9 63.2 22 459 06 15 50 06 16 20 --- 00 51 04 34.4 269.3 4.0 63.2 30 466 06 15 51 06 16 50 AT2019DSG 00 51 34 34.2 266.5 3.9 61.9 22 466 06 16 50 06 19 40 --- 00 54 24 33.6 266.9 3.9 61.9 170 510 06 16 51 06 20 10 J2052+1619 00 54 55 33.5 269.8 4.0 63.2 22 510 06 20 10 06 20 40 --- 00 55 25 33.4 269.8 4.0 63.2 30 518 06 20 11 06 21 10 AT2019DSG 00 55 55 33.3 267.1 4.0 61.9 22 518 06 21 10 06 24 00 --- 00 58 45 32.7 267.4 4.0 62.0 170 562 06 21 11 06 24 30 J2052+1619 00 59 15 32.6 270.3 4.1 63.2 22 562 06 24 30 06 25 00 --- 00 59 45 32.5 270.4 4.1 63.2 30 569 06 24 31 06 25 30 AT2019DSG 01 00 15 32.4 267.6 4.0 62.0 22 569 06 25 30 06 28 20 --- 01 03 06 31.7 268.0 4.1 62.0 170 613 06 25 31 06 28 50 J2052+1619 01 03 36 31.7 270.9 4.2 63.2 22 613 06 28 50 06 29 20 --- 01 04 06 31.6 270.9 4.2 63.2 30 621 06 28 51 06 29 50 AT2019DSG 01 04 36 31.4 268.2 4.1 62.0 22 621 06 29 50 06 32 40 --- 01 07 27 30.8 268.6 4.2 62.1 170 665 06 29 51 ---------- 50s gap for Tsys ---------- 06 33 30 J2052+1619 01 08 17 30.7 271.5 4.2 63.2 42 665 06 33 30 06 34 00 --- 01 08 47 30.6 271.5 4.3 63.2 30 672 06 33 31 Schedule for TIANMA65 (Code T6 ) 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 34 30 J2058+1512 01 09 17 31.3 269.7 4.2 62.6 24 672 06 34 30 06 37 20 --- 01 12 07 30.6 270.0 4.2 62.6 170 716 06 34 31 06 37 50 J2052+1619 01 12 37 29.8 272.0 4.3 63.1 24 716 06 37 50 06 38 20 --- 01 13 08 29.6 272.1 4.3 63.1 30 724 06 37 51 06 38 50 AT2019DSG 01 13 38 29.5 269.4 4.3 62.1 23 724 06 38 50 06 41 40 --- 01 16 28 28.9 269.8 4.3 62.1 170 768 06 38 51 06 42 10 J2052+1619 01 16 58 28.8 272.6 4.4 63.1 23 768 06 42 10 06 42 40 --- 01 17 28 28.7 272.6 4.4 63.1 30 775 06 42 11 06 43 10 AT2019DSG 01 17 58 28.6 270.0 4.3 62.1 23 775 06 43 10 06 46 00 --- 01 20 49 28.0 270.3 4.4 62.1 170 819 06 43 11 06 46 30 J2052+1619 01 21 19 27.9 273.1 4.5 63.0 23 819 06 46 30 06 47 00 --- 01 21 49 27.8 273.2 4.5 63.0 30 827 06 46 31 06 47 30 AT2019DSG 01 22 19 27.6 270.5 4.4 62.1 23 827 06 47 30 06 50 20 --- 01 25 09 27.0 270.9 4.5 62.1 170 871 06 47 31 06 50 50 J2052+1619 01 25 40 27.0 273.6 4.5 63.0 23 871 06 50 50 06 51 20 --- 01 26 10 26.9 273.7 4.5 63.0 30 879 06 50 51 06 51 50 AT2019DSG 01 26 40 26.7 271.1 4.5 62.1 23 879 06 51 50 06 54 40 --- 01 29 30 26.1 271.5 4.5 62.0 170 922 06 51 51 06 55 10 J2052+1619 01 30 00 26.0 274.2 4.6 62.9 23 922 06 55 10 06 55 40 --- 01 30 30 25.9 274.2 4.6 62.9 30 930 06 55 11 06 56 10 AT2019DSG 01 31 00 25.8 271.6 4.6 62.0 23 930 06 56 10 06 59 00 --- 01 33 51 25.2 272.0 4.6 62.0 170 974 06 56 11 ---------- 50s gap for Tsys ---------- 06 59 50 J2052+1619 01 34 41 25.0 274.7 4.7 62.8 43 974 06 59 50 07 00 20 --- 01 35 11 24.9 274.8 4.7 62.8 30 982 06 59 51 07 00 50 J2058+1512 01 35 41 25.6 273.0 4.6 62.4 24 982 07 00 50 07 03 40 --- 01 38 32 25.0 273.3 4.6 62.4 170 1025 07 00 51 07 04 10 J2052+1619 01 39 02 24.1 275.2 4.8 62.7 24 1025 07 04 10 07 04 40 --- 01 39 32 24.0 275.3 4.8 62.7 30 1033 07 04 11 Schedule for TIANMA65 (Code T6 ) 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 05 10 AT2019DSG 01 40 02 23.8 272.8 4.7 62.0 23 1033 07 05 10 07 08 00 --- 01 42 52 23.2 273.1 4.7 61.9 170 1077 07 05 11 07 08 30 J2052+1619 01 43 22 23.2 275.8 4.8 62.6 23 1077 07 08 30 07 09 00 --- 01 43 53 23.1 275.8 4.8 62.6 30 1085 07 08 31 07 09 30 AT2019DSG 01 44 23 22.9 273.3 4.8 61.9 23 1085 07 09 30 07 12 20 --- 01 47 13 22.3 273.7 4.8 61.9 170 1128 07 09 31 07 12 50 J2052+1619 01 47 43 22.3 276.3 4.9 62.5 23 1128 07 12 50 07 13 20 --- 01 48 13 22.2 276.3 4.9 62.5 30 1136 07 12 51 07 13 50 AT2019DSG 01 48 43 22.0 273.9 4.8 61.8 23 1136 07 13 50 07 16 40 --- 01 51 34 21.4 274.2 4.9 61.8 170 1180 07 13 51 07 17 10 J2052+1619 01 52 04 21.3 276.8 5.0 62.4 23 1180 07 17 10 07 17 40 --- 01 52 34 21.2 276.9 5.0 62.4 30 1188 07 17 11 07 18 10 AT2019DSG 01 53 04 21.1 274.4 4.9 61.8 23 1188 07 18 10 07 21 00 --- 01 55 55 20.4 274.7 5.0 61.7 170 1232 07 18 11 07 21 30 J2052+1619 01 56 25 20.4 277.3 5.0 62.3 23 1232 07 21 30 07 22 00 --- 01 56 55 20.3 277.4 5.1 62.3 30 1239 07 21 31 07 22 30 AT2019DSG 01 57 25 20.1 274.9 5.0 61.7 23 1239 07 22 30 07 25 20 --- 02 00 15 19.5 275.3 5.0 61.6 170 1283 07 22 31 ---------- 50s gap for Tsys ---------- 07 26 10 J2052+1619 02 01 05 19.4 277.9 5.1 62.2 43 1283 07 26 10 07 26 40 --- 02 01 35 19.3 277.9 5.1 62.1 30 1291 07 26 11 07 27 10 J2058+1512 02 02 06 20.0 276.2 5.0 61.9 24 1291 07 27 10 07 30 00 --- 02 04 56 19.4 276.6 5.1 61.9 170 1335 07 27 11 07 30 30 J2052+1619 02 05 26 18.5 278.4 5.2 62.0 24 1335 07 30 30 07 31 00 --- 02 05 56 18.4 278.5 5.2 62.0 30 1342 07 30 31 07 31 30 AT2019DSG 02 06 26 18.2 276.0 5.1 61.5 23 1342 07 31 30 07 34 20 --- 02 09 17 17.6 276.4 5.2 61.4 170 1386 07 31 31 07 34 50 J2052+1619 02 09 47 17.6 278.9 5.3 61.9 23 1386 07 34 50 07 35 20 --- 02 10 17 17.5 279.0 5.3 61.9 30 1394 07 34 51 Schedule for TIANMA65 (Code T6 ) 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 35 50 AT2019DSG 02 10 47 17.3 276.5 5.2 61.4 23 1394 07 35 50 07 38 40 --- 02 13 37 16.7 276.9 5.3 61.3 170 1438 07 35 51 07 39 10 J2052+1619 02 14 08 16.7 279.4 5.3 61.7 23 1438 07 39 10 07 39 40 --- 02 14 38 16.6 279.5 5.3 61.7 30 1445 07 39 11 07 40 10 AT2019DSG 02 15 08 16.4 277.1 5.3 61.3 23 1445 07 40 10 07 43 00 --- 02 17 58 15.8 277.4 5.3 61.2 170 1489 07 40 11 07 43 30 J2052+1619 02 18 28 15.7 279.9 5.4 61.6 23 1489 07 43 30 07 44 00 --- 02 18 58 15.6 280.0 5.4 61.5 30 1497 07 43 31 07 44 30 AT2019DSG 02 19 28 15.4 277.6 5.4 61.1 23 1497 07 44 30 07 47 20 --- 02 22 19 14.8 277.9 5.4 61.1 170 1541 07 44 31 07 47 50 J2052+1619 02 22 49 14.8 280.5 5.5 61.4 23 1541 07 47 50 07 48 20 --- 02 23 19 14.7 280.5 5.5 61.4 30 1548 07 47 51 07 48 50 AT2019DSG 02 23 49 14.5 278.1 5.4 61.0 23 1548 07 48 50 07 51 40 --- 02 26 40 13.9 278.5 5.5 60.9 170 1592 07 48 51 ---------- 50s gap for Tsys ---------- 07 52 30 J2052+1619 02 27 30 13.8 281.0 5.6 61.2 43 1592 07 52 30 07 53 00 --- 02 28 00 13.7 281.1 5.6 61.2 30 1600 07 52 31 07 53 30 J2058+1512 02 28 30 14.4 279.4 5.5 61.1 25 1600 07 53 30 07 56 20 --- 02 31 20 13.8 279.7 5.5 61.0 170 1644 07 53 31 07 56 50 J2052+1619 02 31 50 12.9 281.5 5.6 61.0 25 1644 07 56 50 07 57 20 --- 02 32 21 12.8 281.6 5.6 61.0 30 1651 07 56 51 07 57 50 AT2019DSG 02 32 51 12.6 279.2 5.6 60.7 23 1651 07 57 50 08 00 40 --- 02 35 41 12.0 279.6 5.6 60.6 170 1695 07 57 51 08 01 10 J2052+1619 02 36 11 12.0 282.0 5.7 60.8 23 1695 08 01 10 08 01 40 --- 02 36 41 11.9 282.1 5.7 60.8 30 1703 08 01 11 08 02 10 AT2019DSG 02 37 11 11.7 279.8 5.7 60.6 23 1703 08 02 10 08 05 00 --- 02 40 02 11.1 280.1 5.7 60.5 170 1747 08 02 11 08 05 30 J2052+1619 02 40 32 11.1 282.6 5.8 60.6 23 1747 08 05 30 08 06 00 --- 02 41 02 11.0 282.6 5.8 60.6 30 1755 08 05 31 Schedule for TIANMA65 (Code T6 ) 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 06 30 AT2019DSG 02 41 32 10.8 280.3 5.7 60.4 23 1755 08 06 30 08 09 20 --- 02 44 22 10.2 280.6 5.8 60.3 170 1798 08 06 31 08 09 50 J2052+1619 02 44 53 10.2 283.1 5.9 60.4 23 1798 08 09 50 08 10 20 --- 02 45 23 10.1 283.2 5.9 60.4 30 1806 08 09 51 08 10 50 AT2019DSG 02 45 53 9.9 280.8 5.8 60.2 23 1806 08 10 50 08 13 40 --- 02 48 43 9.3 281.2 5.8 60.1 170 1850 08 10 51 08 14 10 J2052+1619 02 49 13 9.3 283.6 5.9 60.2 23 1850 08 14 10 08 14 40 --- 02 49 43 9.2 283.7 5.9 60.2 30 1858 08 14 11 08 15 10 AT2019DSG 02 50 13 8.9 281.3 5.9 60.0 23 1858 08 15 10 08 18 00 --- 02 53 04 8.3 281.7 5.9 59.9 170 1901 08 15 11 ---------- 50s gap for Tsys ---------- 08 18 50 J2052+1619 02 53 54 8.3 284.2 6.0 59.9 43 1901 08 18 50 08 19 20 --- 02 54 24 8.2 284.2 6.0 59.9 30 1909 08 18 51 08 19 50 J2058+1512 02 54 54 8.8 282.6 5.9 60.0 25 1909 08 19 50 08 22 40 --- 02 57 45 8.2 282.9 6.0 59.9 170 1953 08 19 51 08 23 10 J2052+1619 02 58 15 7.4 284.7 6.1 59.7 25 1953 08 23 10 08 23 40 --- 02 58 45 7.3 284.8 6.1 59.7 30 1961 08 23 11 08 24 10 AT2019DSG 02 59 15 7.0 282.5 6.0 59.6 23 1961 08 24 10 08 27 00 --- 03 02 05 6.5 282.8 6.1 D 59.5 0 2004 08 24 11 ---------- Ef out to check pointing ---------- 09 45 20 3C454.3 04 20 38 15.5 279.9 5.4 61.5 4598 2004 09 45 20 09 50 20 --- 04 25 39 14.4 280.5 5.5 61.3 300 2082 09 45 21 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess120.C2048 --- 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: 13 Station: TIANMA65 Total bit rate: 2048 Format: VDIF 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= 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 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: 14 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= 630.49 630.49 630.49 630.49 694.49 694.49 694.49 694.49 758.49 758.49 758.49 758.49 822.49 822.49 822.49 822.49 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: 14 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 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