COVER INFORMATION Station: HART (Code Hh ) Experiment: Multi-freq study on FRB PRSs - FRB190520 Exp. Code: EB104C Schedule Version: 1.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Bhandari Address: JIVE Oude Hoogeveensedijk 4 Dwingeloo Netherlands Phone: +31 521 596 508 EMAIL: marcote@jive.eu Fax: +31 521 596 508 Phone during observation: +31 521 596 508 Observing mode: evn Notes: ########################################################### ### Please, make sure PHASE CAL, CONT Tsys, AGC is OFF. ### ########################################################### Schedule for HART (Code Hh ) Page 2 Multi-freq study on FRB PRSs - FRB190520 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 116.49 116.49 116.49 116.49 180.49 180.49 180.49 180.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 03 00 00 J1550+0527 14 59 51 56.3 23.8 -0.9 0.0 0 0 03 00 00 03 02 00 =1548+056 15 01 51 56.5 23.0 -0.8 0.0 120 15 03 00 01 03 02 20 J1550+0527 15 02 11 56.5 22.8 -0.8 0.0 -1 15 03 02 20 03 06 00 =1548+056 15 05 52 56.8 21.2 -0.8 0.0 219 44 03 02 21 03 06 20 J1550+0527 15 06 12 56.8 21.1 -0.8 0.0 -1 44 03 06 20 03 10 00 =1548+056 15 09 52 57.1 19.5 -0.7 0.0 219 72 03 06 21 03 12 00 J1605-1139 15 11 53 70.8 44.9 -0.9 0.0 59 72 03 12 00 03 13 30 =1602-115 15 13 23 71.1 44.1 -0.9 0.0 90 84 03 12 01 03 13 30 FRB190520 15 13 23 71.3 41.4 -0.8 0.0 -27 84 No stop 03 18 00 --- 15 17 54 71.9 38.6 -0.8 0.0 243 119 03 13 31 03 18 30 J1605-1139 15 18 24 71.8 41.0 -0.8 0.0 3 119 03 18 30 03 19 40 =1602-115 15 19 34 72.0 40.3 -0.8 0.0 70 128 03 18 31 03 19 40 FRB190520 15 19 34 72.2 37.5 -0.7 0.0 -27 128 No stop 03 24 10 --- 15 24 05 72.8 34.4 -0.7 0.0 243 162 03 19 41 03 24 10 J1605-1139 15 24 05 72.6 37.3 -0.7 0.0 -27 162 No stop 03 26 00 =1602-115 15 25 55 72.9 36.1 -0.7 0.0 83 176 03 24 11 03 26 00 FRB190520 15 25 55 73.0 33.1 -0.6 0.0 -27 176 No stop 03 30 30 --- 15 30 26 73.5 29.7 -0.6 0.0 243 211 03 26 01 03 31 00 J1605-1139 15 30 56 73.5 32.4 -0.6 0.0 3 211 03 31 00 03 32 10 =1602-115 15 32 06 73.7 31.5 -0.6 0.0 70 220 03 31 01 03 32 10 J1603-1007 15 32 06 72.5 27.7 -0.5 0.0 -29 220 No stop 03 36 40 =1600-099 15 36 37 73.0 24.2 -0.5 0.0 241 255 03 32 11 03 36 40 J1605-1139 15 36 37 74.2 28.0 -0.5 0.0 -29 255 No stop 03 38 30 =1602-115 15 38 27 74.4 26.5 -0.5 0.0 81 269 03 36 41 03 38 30 FRB190520 15 38 27 74.3 23.3 -0.4 0.0 -27 269 No stop 03 43 00 --- 15 42 58 74.7 19.4 -0.3 0.0 243 304 03 38 31 03 43 30 J1605-1139 15 43 28 74.8 22.2 -0.4 0.0 3 304 03 43 30 03 44 40 =1602-115 15 44 38 74.9 21.2 -0.4 0.0 70 313 03 43 31 Schedule for HART (Code Hh ) Page 3 Multi-freq study on FRB PRSs - FRB190520 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- 03 44 40 FRB190520 15 44 38 74.8 17.9 -0.3 0.0 -27 313 No stop 03 49 10 --- 15 49 09 75.1 13.7 -0.2 0.0 243 348 03 44 41 03 49 10 J1605-1139 15 49 09 75.2 17.1 -0.3 0.0 -27 348 No stop 03 51 00 =1602-115 15 50 59 75.4 15.4 -0.3 0.0 83 362 03 49 11 03 51 00 FRB190520 15 50 59 75.2 12.0 -0.2 0.0 -27 362 No stop 03 55 30 --- 15 55 30 75.3 7.7 -0.1 0.0 243 397 03 51 01 03 56 00 J1605-1139 15 56 00 75.6 10.6 -0.2 0.0 3 397 03 56 00 03 57 10 =1602-115 15 57 10 75.7 9.4 -0.2 0.0 70 406 03 56 01 03 57 10 FRB190520 15 57 10 75.4 6.1 -0.1 0.0 -27 406 No stop 04 01 40 --- 16 01 41 75.5 1.7 -0.0 0.0 243 441 03 57 11 04 01 40 J1605-1139 16 01 41 75.8 5.0 -0.1 0.0 -27 441 No stop 04 03 30 =1602-115 16 03 31 75.8 3.2 -0.1 0.0 83 455 04 01 41 04 03 30 FRB190520 16 03 31 75.5 359.9 0.0 0.0 -27 455 No stop 04 08 00 --- 16 08 02 75.4 355.5 0.1 0.0 243 490 04 03 31 04 08 30 J1605-1139 16 08 32 75.8 358.1 0.0 0.0 3 490 04 08 30 04 09 40 =1602-115 16 09 42 75.8 357.0 0.1 0.0 70 499 04 08 31 04 09 40 J1603-1007 16 09 42 74.3 355.4 0.1 0.0 -29 499 No stop 04 14 10 =1600-099 16 14 13 74.1 351.4 0.2 0.0 241 533 04 09 41 04 14 10 J1605-1139 16 14 13 75.7 352.5 0.1 0.0 -29 533 No stop 04 16 00 =1602-115 16 16 03 75.7 350.7 0.2 0.0 81 547 04 14 11 04 16 00 FRB190520 16 16 03 75.2 347.9 0.2 0.0 -27 547 No stop 04 20 30 --- 16 20 34 74.9 343.7 0.3 0.0 243 582 04 16 01 04 21 00 J1605-1139 16 21 04 75.4 345.9 0.2 0.0 3 582 04 21 00 04 22 10 =1602-115 16 22 14 75.4 344.8 0.3 0.0 70 591 04 21 01 04 22 10 FRB190520 16 22 14 74.8 342.2 0.3 0.0 -27 591 No stop 04 26 40 --- 16 26 45 74.5 338.2 0.4 0.0 243 626 04 22 11 04 26 40 J1605-1139 16 26 45 75.1 340.6 0.3 0.0 -27 626 No stop 04 28 30 =1602-115 16 28 35 74.9 338.9 0.4 0.0 83 640 04 26 41 04 28 30 FRB190520 16 28 35 74.3 336.6 0.4 0.0 -27 640 No stop 04 33 00 --- 16 33 06 73.9 332.9 0.5 0.0 243 675 04 28 31 Schedule for HART (Code Hh ) Page 4 Multi-freq study on FRB PRSs - FRB190520 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- 04 33 30 J1605-1139 16 33 36 74.5 334.6 0.4 0.0 3 675 04 33 30 04 34 40 =1602-115 16 34 46 74.4 333.6 0.5 0.0 70 684 04 33 31 04 34 40 FRB190520 16 34 46 73.7 331.6 0.5 0.0 -27 684 No stop 04 39 10 --- 16 39 17 73.2 328.1 0.6 0.0 243 719 04 34 41 04 39 10 J1605-1139 16 39 17 73.9 330.0 0.5 0.0 -27 719 No stop 04 41 00 =1602-115 16 41 07 73.7 328.6 0.6 0.0 83 733 04 39 11 04 41 00 FRB190520 16 41 07 73.0 326.8 0.6 0.0 -27 733 No stop 04 45 30 --- 16 45 38 72.4 323.6 0.7 0.0 243 768 04 41 01 04 46 00 J1605-1139 16 46 08 73.1 324.9 0.7 0.0 3 768 04 46 00 04 47 10 =1602-115 16 47 18 72.9 324.0 0.7 0.0 70 777 04 46 01 04 47 10 J1603-1007 16 47 18 71.3 325.3 0.7 0.0 -29 777 No stop 04 51 40 =1600-099 16 51 49 70.7 322.5 0.8 0.0 241 812 04 47 11 04 51 40 J1605-1139 16 51 49 72.3 321.0 0.8 0.0 -29 812 No stop 04 53 30 =1602-115 16 53 39 72.0 319.8 0.8 0.0 81 826 04 51 41 04 53 30 FRB190520 16 53 39 71.3 318.5 0.8 0.0 -27 826 No stop 04 58 00 --- 16 58 10 70.6 315.8 0.9 0.0 243 861 04 53 31 04 58 30 J1605-1139 16 58 40 71.3 316.7 0.9 0.0 3 861 04 58 30 04 59 40 =1602-115 16 59 50 71.1 316.0 0.9 0.0 70 870 04 58 31 04 59 40 FRB190520 16 59 50 70.3 314.9 0.9 0.0 -27 870 No stop 05 04 10 --- 17 04 21 69.6 312.5 1.0 0.0 243 904 04 59 41 05 04 10 J1605-1139 17 04 21 70.4 313.5 1.0 0.0 -27 904 No stop 05 06 00 =1602-115 17 06 12 70.1 312.5 1.0 0.0 83 918 05 04 11 05 06 00 FRB190520 17 06 12 69.3 311.6 1.0 0.0 -27 918 No stop 05 10 30 --- 17 10 42 68.5 309.4 1.1 0.0 243 953 05 06 01 05 11 00 J1605-1139 17 11 12 69.2 309.9 1.1 0.0 3 953 05 11 00 05 12 10 =1602-115 17 12 23 69.0 309.4 1.1 0.0 70 962 05 11 01 05 12 10 FRB190520 17 12 23 68.2 308.6 1.1 0.0 -27 962 No stop 05 16 40 --- 17 16 53 67.4 306.6 1.2 0.0 243 997 05 12 11 05 16 40 J1605-1139 17 16 53 68.2 307.3 1.2 0.0 -27 997 No stop 05 18 30 =1602-115 17 18 44 67.9 306.5 1.2 0.0 83 1011 05 16 41 Schedule for HART (Code Hh ) Page 5 Multi-freq study on FRB PRSs - FRB190520 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- 05 18 30 FRB190520 17 18 44 67.1 305.8 1.3 0.0 -27 1011 No stop 05 23 00 --- 17 23 14 66.2 304.0 1.3 0.0 243 1046 05 18 31 05 23 30 J1605-1139 17 23 44 67.0 304.3 1.3 0.0 3 1046 05 23 30 05 24 40 =1602-115 17 24 55 66.7 303.9 1.3 0.0 70 1055 05 23 31 05 24 40 J1603-1007 17 24 55 65.4 305.9 1.3 0.0 -29 1055 No stop 05 29 10 =1600-099 17 29 25 64.5 304.2 1.4 0.0 241 1090 05 24 41 05 29 10 J1605-1139 17 29 25 65.9 302.1 1.4 0.0 -29 1090 No stop 05 31 00 =1602-115 17 31 16 65.5 301.4 1.4 0.0 81 1104 05 29 11 05 31 00 FRB190520 17 31 16 64.7 301.0 1.5 0.0 -27 1104 No stop 05 35 30 --- 17 35 46 63.8 299.4 1.5 0.0 243 1139 05 31 01 05 36 00 J1605-1139 17 36 16 64.6 299.7 1.5 0.0 3 1139 05 36 00 05 37 10 =1602-115 17 37 27 64.3 299.3 1.5 0.0 70 1148 05 36 01 05 37 10 FRB190520 17 37 27 63.5 298.9 1.6 0.0 -27 1148 No stop 05 41 40 --- 17 41 57 62.6 297.4 1.6 0.0 243 1183 05 37 11 05 41 40 J1605-1139 17 41 57 63.5 297.8 1.6 0.0 -27 1183 No stop 05 43 30 =1602-115 17 43 48 63.1 297.2 1.6 0.0 83 1197 05 41 41 05 43 30 FRB190520 17 43 48 62.2 296.9 1.7 0.0 -27 1197 No stop 05 48 00 --- 17 48 18 61.3 295.5 1.7 0.0 243 1232 05 43 31 05 48 30 J1605-1139 17 48 49 62.1 295.7 1.7 0.0 3 1232 05 48 30 05 49 40 =1602-115 17 49 59 61.8 295.3 1.7 0.0 70 1241 05 48 31 05 49 40 FRB190520 17 49 59 61.0 295.1 1.8 0.0 -27 1241 No stop 05 54 10 --- 17 54 29 60.1 293.8 1.9 0.0 243 1275 05 49 41 05 54 10 J1605-1139 17 54 29 60.9 294.1 1.8 0.0 -27 1275 No stop 05 56 00 =1602-115 17 56 20 60.5 293.6 1.8 0.0 83 1289 05 54 11 05 56 00 FRB190520 17 56 20 59.7 293.3 1.9 0.0 -27 1289 No stop 06 00 30 --- 18 00 50 58.7 292.2 2.0 0.0 243 1324 05 56 01 06 01 00 J1605-1139 18 01 21 59.5 292.3 1.9 0.0 3 1324 06 01 00 06 02 10 =1602-115 18 02 31 59.3 292.0 1.9 0.0 70 1333 06 01 01 06 02 10 J1603-1007 18 02 31 58.0 294.0 2.0 0.0 -29 1333 No stop 06 06 40 =1600-099 18 07 02 57.1 292.8 2.0 0.0 241 1368 06 02 11 Schedule for HART (Code Hh ) Page 6 Multi-freq study on FRB PRSs - FRB190520 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- 06 06 40 J1605-1139 18 07 02 58.3 290.9 2.0 0.0 -29 1368 No stop 06 08 30 =1602-115 18 08 52 57.9 290.4 2.0 0.0 81 1382 06 06 41 06 08 30 FRB190520 18 08 52 57.1 290.3 2.1 0.0 -27 1382 No stop 06 13 00 --- 18 13 23 56.1 289.3 2.2 0.0 243 1417 06 08 31 06 13 30 J1605-1139 18 13 53 56.9 289.3 2.1 0.0 3 1417 06 13 30 06 14 40 =1602-115 18 15 03 56.6 289.0 2.1 0.0 70 1426 06 13 31 06 14 40 FRB190520 18 15 03 55.7 288.9 2.2 0.0 -27 1426 No stop 06 19 10 --- 18 19 34 54.8 287.9 2.3 0.0 243 1461 06 14 41 06 19 10 J1605-1139 18 19 34 55.7 288.0 2.2 0.0 -27 1461 No stop 06 21 00 =1602-115 18 21 24 55.3 287.7 2.2 0.0 83 1475 06 19 11 06 21 00 FRB190520 18 21 24 54.4 287.6 2.3 0.0 -27 1475 No stop 06 25 30 --- 18 25 55 53.4 286.7 2.4 0.0 243 1510 06 21 01 06 26 00 J1605-1139 18 26 25 54.2 286.6 2.3 0.0 3 1510 06 26 00 06 27 10 =1602-115 18 27 35 53.9 286.4 2.3 0.0 70 1519 06 26 01 06 27 10 FRB190520 18 27 35 53.1 286.3 2.4 0.0 -27 1519 No stop 06 31 40 --- 18 32 06 52.1 285.5 2.5 0.0 243 1554 06 27 11 06 31 40 J1605-1139 18 32 06 53.0 285.5 2.4 0.0 -27 1554 No stop 06 33 30 =1602-115 18 33 56 52.6 285.2 2.5 0.0 83 1568 06 31 41 06 33 30 FRB190520 18 33 56 51.7 285.1 2.5 0.0 -27 1568 No stop 06 38 00 --- 18 38 27 50.7 284.3 2.6 0.0 243 1603 06 33 31 06 38 30 J1605-1139 18 38 57 51.5 284.3 2.5 0.0 3 1603 06 38 30 06 39 40 =1602-115 18 40 07 51.2 284.1 2.6 0.0 70 1612 06 38 31 06 39 40 J1603-1007 18 40 07 50.1 285.9 2.6 0.0 -29 1612 No stop 06 44 10 =1600-099 18 44 38 49.1 285.1 2.7 0.0 241 1646 06 39 41 06 44 10 J1605-1139 18 44 38 50.2 283.3 2.6 0.0 -29 1646 No stop 06 46 00 =1602-115 18 46 28 49.8 283.0 2.7 0.0 81 1660 06 44 11 06 47 40 J1550+0527 18 48 08 37.1 299.8 2.9 0.0 39 1660 06 47 40 06 52 00 =1548+056 18 52 29 36.2 299.0 3.0 0.0 260 1694 06 47 41 Schedule for HART (Code Hh ) Page 7 Multi-freq study on FRB PRSs - FRB190520 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- ---------- pulsar-check ---------- 06 56 00 B1933+16 18 56 30 46.7 14.2 -0.7 0.0 101 1694 06 56 00 07 00 00 --- 19 00 30 46.9 12.8 -0.6 0.0 240 1725 06 56 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess125.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: hh18cm Values confirmed by E-mail Jonathan Quick 20140219 (CR) ****** Only 122.49 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 5 Station: HART Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 Net SB= L L U U L L U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 8 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 116.49 116.49 116.49 116.49 180.49 180.49 180.49 180.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 8 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * FRB190520 15 59 18.982305 * 16 02 04.261100 16 03 27.472082 0.00 -11 08 58.91332 *-11 17 17.36600 -11 21 35.83740 0.00 From catalog imbedded in main SCHED input file. * B1933+16 19 33 31.814330 * 19 35 47.800000 19 36 55.063563 0.00 16 09 57.63427 * 16 16 39.90000 16 19 46.98440 0.00 From catalog imbedded in main SCHED input file. 1548+056 15 48 06.931007 * 15 50 35.269240 15 51 50.068777 0.01 * J1550+0527 05 36 11.23091 * 05 27 10.44845 05 22 24.62596 0.01 J1550+05 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 9440 observations. 1600-099 16 00 34.687412 * 16 03 18.778244 16 04 41.386729 0.13 * J1603-1007 -09 59 07.60341 *-10 07 21.29503 -10 11 37.82850 0.27 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 134 observations. 1602-115 16 02 31.767572 * 16 05 17.531656 16 06 40.967328 0.02 * J1605-1139 -11 31 20.63028 *-11 39 26.83112 -11 43 39.02450 0.04 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 2275 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 FRB190520 sess125.L1024 1 2 3 4 5 6 7 8 2.100 46.445 B1933+16 sess125.L1024 1 2 3 4 5 6 7 8 0.067 1.715 J1550+0527 sess125.L1024 1 2 3 4 5 6 7 8 0.228 5.813 J1603-1007 sess125.L1024 1 2 3 4 5 6 7 8 0.450 9.561 J1605-1139 sess125.L1024 1 2 3 4 5 6 7 8 0.875 16.274 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) FRB190520 92.7 B1933+16 48.8 J1550+0527 98.6 J1603-1007 92.6 J1605-1139 91.9 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