COVER INFORMATION Station: EFLSBERG (Code Ef ) Experiment: Exploring the jet in a z > 6 blazar DES J0322-18 Exp. Code: EL064B Schedule Version: 4.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Tao An Address: Shanghai Astronomical Observatory 80th Nandan Road, Xuhui District Shanghai 200030 China Phone: +86-13261603255 EMAIL: antao@shao.ac.cn Fax: Phone during observation: Observing mode: VLBI Notes: # Please, make sure PHASE CAL is OFF # 1.4 GHz, dual polarisation, 1024 Mbps eVLBI, 6 hours at GST: J0322-18 Drafted by Yuanqi Liu Schedule for EFLSBERG (Code Ef ) Page 2 Exploring the jet in a z > 6 blazar DES J0322-18 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 3 Nov 2022 Day 307 --- 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 19 00 00 J0006-0623 22 19 36 28.6 149.1 -1.8 -19.2 0 0 19 00 00 19 05 00 =0003-066 22 24 37 29.0 150.5 -1.7 -18.4 300 39 19 00 01 21 26 30 J0322-18 00 46 31 12.7 142.1 -2.6 -24.3 8363 39 21 26 30 21 30 30 --- 00 50 31 13.1 143.0 -2.5 -23.8 240 70 21 26 31 21 31 00 P0327-1803 00 51 01 13.2 141.6 -2.6 -24.5 -4 70 21 31 00 21 32 00 --- 00 52 01 13.3 141.9 -2.6 -24.4 56 77 21 31 01 21 32 00 J0322-18 00 52 01 13.3 143.3 -2.5 -23.6 -35 77 No stop 21 36 00 --- 00 56 02 13.7 144.2 -2.5 -23.1 205 108 21 32 01 21 36 00 P0327-1803 00 56 02 13.7 142.8 -2.5 -23.9 -34 108 No stop 21 37 30 --- 00 57 32 13.9 143.1 -2.5 -23.7 56 120 21 36 01 21 37 30 J0322-18 00 57 32 13.8 144.6 -2.4 -22.9 -35 120 No stop 21 41 30 --- 01 01 33 14.2 145.5 -2.4 -22.3 205 151 21 37 31 21 42 00 P0327-1803 01 02 03 14.3 144.1 -2.4 -23.1 -4 151 21 42 00 21 43 00 --- 01 03 03 14.4 144.3 -2.4 -22.9 56 158 21 42 01 21 43 00 J0322-18 01 03 03 14.3 145.8 -2.3 -22.1 -35 158 No stop 21 47 00 --- 01 07 04 14.6 146.7 -2.3 -21.6 205 189 21 43 01 21 47 00 P0327-1803 01 07 04 14.7 145.2 -2.4 -22.4 -34 189 No stop 21 48 30 --- 01 08 34 14.9 145.6 -2.3 -22.2 56 201 21 47 01 21 48 30 J0322-18 01 08 34 14.8 147.1 -2.2 -21.4 -35 201 No stop 21 52 30 --- 01 12 35 15.1 148.0 -2.2 -20.8 205 232 21 48 31 21 53 00 P0327-1803 01 13 05 15.3 146.6 -2.3 -21.6 -4 232 21 53 00 21 54 00 --- 01 14 05 15.4 146.8 -2.2 -21.4 56 240 21 53 01 21 54 00 J0322-18 01 14 05 15.2 148.3 -2.2 -20.6 -35 240 No stop 21 58 00 --- 01 18 06 15.6 149.3 -2.1 -20.1 205 271 21 54 01 21 58 00 P0327-1803 01 18 06 15.7 147.8 -2.2 -20.9 -34 271 No stop 21 59 30 --- 01 19 36 15.8 148.1 -2.2 -20.7 56 282 21 58 01 21 59 30 J0322-18 01 19 36 15.7 149.6 -2.1 -19.8 -35 282 No stop 22 03 30 --- 01 23 37 16.0 150.5 -2.0 -19.3 205 313 21 59 31 Schedule for EFLSBERG (Code Ef ) Page 3 Exploring the jet in a z > 6 blazar DES J0322-18 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 3 Nov 2022 Day 307 --- 22 04 00 P0327-1803 01 24 07 16.2 149.2 -2.1 -20.0 -4 313 22 04 00 22 05 00 --- 01 25 07 16.3 149.4 -2.1 -19.9 56 321 22 04 01 22 05 00 J0322-18 01 25 07 16.1 150.9 -2.0 -19.0 -35 321 No stop 22 09 00 --- 01 29 08 16.4 151.8 -1.9 -18.5 205 352 22 05 01 22 09 00 P0327-1803 01 29 08 16.6 150.3 -2.0 -19.3 -34 352 No stop 22 10 30 --- 01 30 38 16.7 150.7 -2.0 -19.1 56 363 22 09 01 22 10 30 J0322-18 01 30 38 16.6 152.2 -1.9 -18.2 -35 363 No stop 22 14 30 --- 01 34 38 16.8 153.1 -1.8 -17.7 205 394 22 10 31 22 15 00 P0327-1803 01 35 09 17.1 151.7 -1.9 -18.4 -4 394 22 15 00 22 16 00 --- 01 36 09 17.1 152.0 -1.9 -18.3 56 402 22 15 01 22 16 00 J0322-18 01 36 09 17.0 153.5 -1.8 -17.4 -35 402 No stop 22 20 00 --- 01 40 09 17.2 154.4 -1.7 -16.8 205 433 22 16 01 22 20 00 P0327-1803 01 40 09 17.4 152.9 -1.8 -17.7 -34 433 No stop 22 21 30 --- 01 41 40 17.6 153.3 -1.8 -17.5 56 444 22 20 01 22 21 30 J0322-18 01 41 40 17.3 154.8 -1.7 -16.6 -35 444 No stop 22 25 30 --- 01 45 40 17.6 155.7 -1.6 -16.0 205 475 22 21 31 22 26 00 P0327-1803 01 46 10 17.9 154.4 -1.7 -16.8 -4 475 22 26 00 22 27 00 --- 01 47 11 17.9 154.6 -1.7 -16.7 56 483 22 26 01 22 27 00 J0322-18 01 47 11 17.7 156.1 -1.6 -15.8 -35 483 No stop 22 31 00 --- 01 51 11 18.0 157.1 -1.5 -15.2 205 514 22 27 01 22 31 00 P0327-1803 01 51 11 18.2 155.6 -1.6 -16.0 -34 514 No stop 22 32 30 --- 01 52 41 18.3 155.9 -1.6 -15.8 56 526 22 31 01 22 32 30 J0322-18 01 52 41 18.0 157.4 -1.5 -14.9 -35 526 No stop 22 36 30 --- 01 56 42 18.3 158.4 -1.4 -14.3 205 556 22 32 31 22 37 00 P0327-1803 01 57 12 18.6 157.0 -1.5 -15.1 -4 556 22 37 00 22 38 00 --- 01 58 12 18.7 157.3 -1.5 -15.0 56 564 22 37 01 22 38 00 J0322-18 01 58 12 18.4 158.8 -1.4 -14.1 -35 564 No stop 22 42 00 --- 02 02 13 18.6 159.7 -1.4 -13.4 205 595 22 38 01 22 42 00 P0327-1803 02 02 13 18.9 158.2 -1.4 -14.3 -34 595 No stop 22 43 30 --- 02 03 43 19.0 158.6 -1.4 -14.1 56 607 22 42 01 Schedule for EFLSBERG (Code Ef ) Page 4 Exploring the jet in a z > 6 blazar DES J0322-18 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 3 Nov 2022 Day 307 --- 22 43 30 J0322-18 02 03 43 18.7 160.1 -1.3 -13.2 -35 607 No stop 22 47 30 --- 02 07 44 18.9 161.1 -1.3 -12.6 205 638 22 43 31 22 48 00 P0327-1803 02 08 14 19.2 159.7 -1.3 -13.4 -4 638 22 48 00 22 49 00 --- 02 09 14 19.3 160.0 -1.3 -13.2 56 645 22 48 01 22 49 00 J0237+2848 02 09 14 67.6 162.5 -0.5 -12.6 -224 645 No stop 22 54 00 =0234+285 02 14 15 67.9 165.4 -0.4 -10.6 76 684 22 49 01 22 54 30 P0327-1803 02 14 45 19.6 161.3 -1.2 -12.4 -192 684 22 54 30 22 58 30 --- 02 18 46 19.8 162.3 -1.2 -11.7 48 715 22 54 31 22 58 30 J0322-18 02 18 46 19.4 163.8 -1.1 -10.8 -35 715 No stop 23 02 30 --- 02 22 46 19.6 164.8 -1.0 -10.1 205 746 22 58 31 23 02 30 P0327-1803 02 22 46 20.0 163.3 -1.1 -11.1 -34 746 No stop 23 04 00 --- 02 24 17 20.0 163.7 -1.1 -10.8 56 757 23 02 31 23 04 00 J0322-18 02 24 17 19.7 165.1 -1.0 -9.9 -35 757 No stop 23 08 00 --- 02 28 17 19.8 166.1 -0.9 -9.2 205 788 23 04 01 23 08 30 P0327-1803 02 28 47 20.2 164.8 -1.0 -10.1 -4 788 23 08 30 23 09 30 --- 02 29 47 20.3 165.0 -1.0 -9.9 56 796 23 08 31 23 09 30 J0322-18 02 29 47 19.9 166.5 -0.9 -9.0 -35 796 No stop 23 13 30 --- 02 33 48 20.0 167.5 -0.8 -8.3 205 827 23 09 31 23 13 30 P0327-1803 02 33 48 20.4 166.0 -0.9 -9.3 -34 827 No stop 23 15 00 --- 02 35 18 20.5 166.4 -0.9 -9.0 56 839 23 13 31 23 15 00 J0322-18 02 35 18 20.1 167.9 -0.8 -8.1 -35 839 No stop 23 19 00 --- 02 39 19 20.2 168.9 -0.7 -7.4 205 870 23 15 01 23 19 30 P0327-1803 02 39 49 20.7 167.6 -0.8 -8.3 -4 870 23 19 30 23 20 30 --- 02 40 49 20.7 167.8 -0.8 -8.1 56 877 23 19 31 23 20 30 J0322-18 02 40 49 20.2 169.3 -0.7 -7.2 -35 877 No stop 23 24 30 --- 02 44 50 20.4 170.3 -0.6 -6.5 205 908 23 20 31 23 24 30 P0327-1803 02 44 50 20.8 168.8 -0.7 -7.4 -34 908 No stop 23 26 00 --- 02 46 20 20.9 169.2 -0.7 -7.2 56 920 23 24 31 23 26 00 J0322-18 02 46 20 20.4 170.7 -0.6 -6.3 -34 920 No stop 23 30 00 --- 02 50 21 20.5 171.7 -0.5 -5.6 206 951 23 26 01 Schedule for EFLSBERG (Code Ef ) Page 5 Exploring the jet in a z > 6 blazar DES J0322-18 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 3 Nov 2022 Day 307 --- 23 30 30 P0327-1803 02 50 51 21.0 170.3 -0.6 -6.4 -4 951 23 30 30 23 31 30 --- 02 51 51 21.0 170.6 -0.6 -6.3 56 958 23 30 31 23 31 30 J0322-18 02 51 51 20.5 172.0 -0.5 -5.3 -34 958 No stop 23 35 30 --- 02 55 52 20.6 173.1 -0.5 -4.7 206 989 23 31 31 23 35 30 P0327-1803 02 55 52 21.1 171.6 -0.5 -5.6 -33 989 No stop 23 37 00 --- 02 57 22 21.1 172.0 -0.5 -5.3 57 1001 23 35 31 23 37 00 J0322-18 02 57 22 20.6 173.4 -0.4 -4.4 -34 1001 No stop 23 41 00 --- 03 01 23 20.7 174.4 -0.4 -3.7 206 1032 23 37 01 23 41 30 P0327-1803 03 01 53 21.2 173.1 -0.4 -4.6 -3 1032 23 41 30 23 42 30 --- 03 02 53 21.3 173.4 -0.4 -4.4 57 1040 23 41 31 23 42 30 J0322-18 03 02 53 20.7 174.8 -0.3 -3.5 -34 1040 No stop 23 46 30 --- 03 06 54 20.8 175.8 -0.3 -2.8 206 1070 23 42 31 23 46 30 P0327-1803 03 06 54 21.3 174.4 -0.4 -3.7 -33 1070 No stop 23 48 00 --- 03 08 24 21.3 174.8 -0.3 -3.5 57 1082 23 46 31 23 48 00 J0322-18 03 08 24 20.8 176.2 -0.2 -2.5 -34 1082 No stop 23 52 00 --- 03 12 24 20.8 177.2 -0.2 -1.9 206 1113 23 48 01 23 52 30 P0327-1803 03 12 55 21.4 175.9 -0.3 -2.7 -3 1113 23 52 30 23 53 30 --- 03 13 55 21.4 176.2 -0.2 -2.5 57 1121 23 52 31 23 53 30 J0322-18 03 13 55 20.8 177.6 -0.2 -1.6 -34 1121 No stop 23 57 30 --- 03 17 55 20.9 178.6 -0.1 -0.9 206 1152 23 53 31 23 57 30 P0327-1803 03 17 55 21.5 177.2 -0.2 -1.9 -33 1152 No stop 23 59 00 --- 03 19 26 21.5 177.6 -0.2 -1.6 57 1163 23 57 31 --- Start: Thu 3 Nov 2022 Day 307 -- Stop: Fri 4 Nov 2022 Day 308 --- 23 59 00 J0322-18 03 19 26 20.9 179.0 -0.1 -0.7 -34 1163 No stop 00 03 00 --- 03 23 26 20.9 180.0 0.0 0.0 206 1194 23 59 01 00 03 30 P0327-1803 03 23 56 21.5 178.8 -0.1 -0.8 -3 1194 00 03 30 00 04 30 --- 03 24 57 21.5 179.0 -0.1 -0.7 57 1202 00 03 31 00 04 30 J0322-18 03 24 57 20.9 180.4 0.0 0.3 -34 1202 No stop 00 08 30 --- 03 28 57 20.9 181.4 0.1 1.0 206 1233 00 04 31 Schedule for EFLSBERG (Code Ef ) Page 6 Exploring the jet in a z > 6 blazar DES J0322-18 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 4 Nov 2022 Day 308 --- 00 08 30 P0327-1803 03 28 57 21.5 180.0 0.0 0.0 -33 1233 No stop 00 10 00 --- 03 30 27 21.5 180.4 0.0 0.3 57 1244 00 08 31 00 10 00 J0322-18 03 30 27 20.9 181.8 0.1 1.2 -34 1244 No stop 00 14 00 --- 03 34 28 20.8 182.8 0.2 1.9 206 1275 00 10 01 00 14 30 P0327-1803 03 34 58 21.5 181.6 0.1 1.1 -3 1275 00 14 30 00 15 30 --- 03 35 58 21.5 181.8 0.1 1.2 57 1283 00 14 31 00 15 30 J0322-18 03 35 58 20.8 183.2 0.2 2.2 -34 1283 No stop 00 19 30 --- 03 39 59 20.8 184.2 0.3 2.8 206 1314 00 15 31 00 19 30 P0327-1803 03 39 59 21.4 182.9 0.2 1.9 -33 1314 No stop 00 21 00 --- 03 41 29 21.4 183.2 0.2 2.2 57 1326 00 19 31 00 21 00 J0322-18 03 41 29 20.8 184.6 0.3 3.1 -34 1326 No stop 00 25 00 --- 03 45 30 20.7 185.6 0.4 3.8 206 1356 00 21 01 00 25 30 P0327-1803 03 46 00 21.4 184.4 0.3 2.9 -3 1356 00 25 30 00 26 30 --- 03 47 00 21.4 184.7 0.3 3.1 57 1364 00 25 31 00 26 30 J0322-18 03 47 00 20.7 186.0 0.4 4.0 -34 1364 No stop 00 30 30 --- 03 51 01 20.6 187.0 0.5 4.7 206 1395 00 26 31 00 30 30 P0327-1803 03 51 01 21.3 185.7 0.4 3.8 -33 1395 No stop 00 32 00 --- 03 52 31 21.3 186.1 0.4 4.0 57 1407 00 30 31 00 32 00 J0322-18 03 52 31 20.6 187.4 0.5 5.0 -34 1407 No stop 00 36 00 --- 03 56 32 20.5 188.4 0.6 5.6 206 1438 00 32 01 00 36 30 P0327-1803 03 57 02 21.2 187.2 0.5 4.8 -3 1438 00 36 30 00 37 30 --- 03 58 02 21.2 187.5 0.5 5.0 57 1445 00 36 31 00 37 30 J0322-18 03 58 02 20.4 188.8 0.6 5.9 -34 1445 No stop 00 41 30 --- 04 02 03 20.3 189.8 0.6 6.6 206 1476 00 37 31 00 41 30 P0327-1803 04 02 03 21.1 188.5 0.6 5.7 -33 1476 No stop 00 43 00 --- 04 03 33 21.1 188.9 0.6 5.9 57 1488 00 41 31 00 43 00 J0322-18 04 03 33 20.3 190.2 0.7 6.8 -34 1488 No stop 00 47 00 --- 04 07 33 20.2 191.2 0.7 7.5 206 1519 00 43 01 00 47 30 P0327-1803 04 08 04 20.9 190.0 0.7 6.7 -3 1519 00 47 30 00 48 30 --- 04 09 04 20.9 190.3 0.7 6.8 57 1527 00 47 31 Schedule for EFLSBERG (Code Ef ) Page 7 Exploring the jet in a z > 6 blazar DES J0322-18 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 4 Nov 2022 Day 308 --- 00 48 30 J0322-18 04 09 04 20.1 191.6 0.8 7.7 -33 1527 No stop 00 52 30 --- 04 13 04 20.0 192.6 0.8 8.4 207 1557 00 48 31 00 52 30 P0327-1803 04 13 04 20.8 191.3 0.7 7.5 -32 1557 No stop 00 54 00 --- 04 14 35 20.8 191.6 0.8 7.8 58 1569 00 52 31 00 54 00 J0237+2848 04 14 35 61.9 228.7 1.6 33.1 -193 1569 No stop 01 00 00 =0234+285 04 20 36 61.2 231.0 1.7 34.4 167 1615 00 54 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess322.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: ef18cm 18cm Prime focus receiver, standard LO ****** Only 128.00 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 1 Station: EFLSBERG 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 = A2 C4 A2 C4 A2 C4 A2 C4 The following frequency sets based on these setups were used. Frequency Set: 4 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: 4 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) * J0322-18 03 19 58.268882 * 03 22 14.549000 03 23 17.592871 0.00 -18 51 58.03562 *-18 41 17.47800 -18 36 18.98498 0.00 From catalog imbedded in main SCHED input file. * P0327-1803 03 25 26.764400 * 03 27 43.341600 03 28 46.506554 0.00 -18 14 03.97885 *-18 03 42.02800 -17 58 51.74577 0.00 From catalog imbedded in main SCHED input file. 0003-066 00 03 40.288767 * 00 06 13.892888 00 07 24.259850 0.00 * J0006-0623 -06 40 17.29995 *-06 23 35.33538 -06 15 58.11474 0.01 J0006-06 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 38365 observations. 0234+285 02 34 55.589590 * 02 37 52.405677 02 39 13.758997 0.00 * J0237+2848 28 35 11.40773 * 28 48 08.98999 28 54 08.07893 0.00 J0237+28 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 58420 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 J0322-18 sess322.L1024 1 2 3 4 5 6 7 8 9 10 11 12 + 4.067 237.381 P0327-1803 sess322.L1024 1 2 3 4 5 6 7 8 9 10 11 12 + 1.400 70.801 J0006-0623 sess322.L1024 1 2 3 4 5 6 7 8 9 10 11 12 0.083 10.000 J0237+2848 sess322.L1024 1 2 3 4 5 6 7 8 9 10 11 12 0.183 9.543 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) J0322-18 144.2 P0327-1803 144.3 J0006-0623 137.3 J0237+2848 166.4 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