COVER INFORMATION Station: HART (Code Hh ) Experiment: Astrometry for three FAST discovered pulsars Exp. Code: EC069 Schedule Version: 3.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Haiyan Zhang Address: NAOC A20 Datun Road Chaoyang District, Beijing China Phone: +86 10 6483 9807 EMAIL: hyzhang@bao.ac.cn Fax: +86 10 6487 7278 Phone during observation: +86 158 1052 4586 Observing mode: Phase-referencing at 18cm Notes: Schedule for HART (Code Hh ) Page 2 Astrometry for three FAST discovered pulsars 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 ---------------------------------------------------------------------------------------- --- Sun 2 Jun 2019 Day 153 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 100.49 100.49 100.49 100.49 132.49 132.49 132.49 132.49 164.49 164.49 164.49 164.49 196.49 196.49 196.49 196.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 20 00 00 J1827+2638 14 34 45 13.1 51.4 -3.9 0.0 0 0 20 00 00 20 02 00 =1825+266 14 36 45 13.4 51.1 -3.9 0.0 120 15 20 00 01 20 02 00 PSRJ1821+26 14 36 45 14.4 50.3 -3.8 0.0 -29 15 No stop 20 07 00 --- 14 41 46 15.3 49.5 -3.7 0.0 271 54 20 02 01 20 07 00 J1827+2638 14 41 46 14.3 50.3 -3.8 0.0 -29 54 No stop 20 08 00 =1825+266 14 42 46 14.5 50.2 -3.8 0.0 31 62 20 07 01 20 08 00 PSRJ1821+26 14 42 46 15.5 49.4 -3.7 0.0 -29 62 No stop 20 13 00 --- 14 47 47 16.3 48.6 -3.6 0.0 271 100 20 08 01 20 13 40 J1827+2638 14 48 27 15.4 49.4 -3.7 0.0 11 100 20 13 40 20 14 40 =1825+266 14 49 27 15.6 49.2 -3.6 0.0 60 108 20 13 41 20 14 40 PSRJ1821+26 14 49 27 16.6 48.4 -3.5 0.0 -29 108 No stop 20 19 40 --- 14 54 28 17.4 47.6 -3.5 0.0 271 147 20 14 41 20 19 40 J1827+2638 14 54 28 16.5 48.4 -3.6 0.0 -29 147 No stop 20 20 40 =1825+266 14 55 28 16.6 48.3 -3.5 0.0 31 155 20 19 41 20 20 40 PSRJ1821+26 14 55 28 17.6 47.4 -3.4 0.0 -29 155 No stop 20 25 40 --- 15 00 29 18.4 46.6 -3.4 0.0 271 193 20 20 41 20 26 20 J1827+2638 15 01 09 17.6 47.4 -3.4 0.0 11 193 20 26 20 20 27 20 =1825+266 15 02 09 17.7 47.2 -3.4 0.0 60 201 20 26 21 20 27 20 PSRJ1821+26 15 02 09 18.7 46.4 -3.3 0.0 -29 201 No stop 20 32 20 --- 15 07 10 19.5 45.6 -3.3 0.0 271 240 20 27 21 20 32 20 J1827+2638 15 07 10 18.6 46.4 -3.3 0.0 -29 240 No stop 20 33 20 =1825+266 15 08 10 18.7 46.3 -3.3 0.0 31 247 20 32 21 20 33 20 PSRJ1821+26 15 08 10 19.7 45.4 -3.2 0.0 -29 247 No stop 20 38 20 --- 15 13 11 20.5 44.6 -3.2 0.0 271 286 20 33 21 20 39 00 J1827+2638 15 13 51 19.6 45.4 -3.2 0.0 11 286 20 39 00 20 40 00 =1825+266 15 14 51 19.8 45.2 -3.2 0.0 60 294 20 39 01 Schedule for HART (Code Hh ) Page 3 Astrometry for three FAST discovered pulsars 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 ---------------------------------------------------------------------------------------- --- Sun 2 Jun 2019 Day 153 --- 20 40 00 PSRJ1821+26 15 14 51 20.7 44.3 -3.1 0.0 -29 294 No stop 20 45 00 --- 15 19 52 21.5 43.4 -3.0 0.0 271 332 20 40 01 20 45 00 J1827+2638 15 19 52 20.6 44.3 -3.1 0.0 -29 332 No stop 20 46 00 =1825+266 15 20 52 20.8 44.2 -3.1 0.0 31 340 20 45 01 20 46 00 PSRJ1821+26 15 20 52 21.7 43.2 -3.0 0.0 -29 340 No stop 20 51 00 --- 15 25 53 22.4 42.3 -2.9 0.0 271 379 20 46 01 20 51 40 J1827+2638 15 26 33 21.6 43.2 -3.0 0.0 11 379 20 51 40 20 52 40 =1825+266 15 27 33 21.8 43.0 -3.0 0.0 60 386 20 51 41 20 52 40 PSRJ1821+26 15 27 33 22.7 42.1 -2.9 0.0 -29 386 No stop 20 57 40 --- 15 32 34 23.4 41.1 -2.8 0.0 271 425 20 52 41 20 57 40 J1827+2638 15 32 34 22.6 42.1 -2.9 0.0 -29 425 No stop 20 58 40 =1825+266 15 33 34 22.7 42.0 -2.9 0.0 31 433 20 57 41 20 58 40 PSRJ1821+26 15 33 34 23.6 41.0 -2.8 0.0 -29 433 No stop 21 03 40 --- 15 38 35 24.3 40.0 -2.7 0.0 271 471 20 58 41 21 04 20 J1827+2638 15 39 15 23.6 40.9 -2.8 0.0 11 471 21 04 20 21 05 20 =1825+266 15 40 15 23.7 40.7 -2.8 0.0 60 479 21 04 21 21 05 20 PSRJ1821+26 15 40 15 24.6 39.7 -2.7 0.0 -29 479 No stop 21 10 20 --- 15 45 16 25.3 38.8 -2.6 0.0 271 518 21 05 21 21 10 20 J1827+2638 15 45 16 24.4 39.8 -2.7 0.0 -29 518 No stop 21 11 20 =1825+266 15 46 16 24.6 39.6 -2.7 0.0 31 526 21 10 21 21 11 20 PSRJ1821+26 15 46 16 25.4 38.6 -2.6 0.0 -29 526 No stop 21 16 20 --- 15 51 17 26.1 37.6 -2.5 0.0 271 564 21 11 21 21 17 00 J1827+2638 15 51 57 25.4 38.5 -2.6 0.0 11 564 21 17 00 21 18 00 =1825+266 15 52 57 25.5 38.4 -2.6 0.0 60 572 21 17 01 21 18 00 PSRJ1821+26 15 52 57 26.3 37.3 -2.5 0.0 -29 572 No stop 21 23 00 --- 15 57 58 27.0 36.3 -2.4 0.0 271 611 21 18 01 21 23 00 J1827+2638 15 57 58 26.2 37.4 -2.5 0.0 -29 611 No stop 21 24 00 =1825+266 15 58 58 26.3 37.2 -2.5 0.0 31 618 21 23 01 21 24 00 PSRJ1821+26 15 58 58 27.2 36.1 -2.4 0.0 -29 618 No stop 21 29 00 --- 16 03 59 27.8 35.0 -2.3 0.0 271 657 21 24 01 Schedule for HART (Code Hh ) Page 4 Astrometry for three FAST discovered pulsars 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 ---------------------------------------------------------------------------------------- --- Sun 2 Jun 2019 Day 153 --- 21 29 40 J1827+2638 16 04 39 27.1 36.0 -2.4 0.0 11 657 21 29 40 21 30 40 =1825+266 16 05 39 27.2 35.8 -2.4 0.0 60 665 21 29 41 21 30 40 PSRJ1821+26 16 05 39 28.0 34.7 -2.3 0.0 -29 665 No stop 21 35 40 --- 16 10 40 28.7 33.6 -2.2 0.0 271 703 21 30 41 21 35 40 J1827+2638 16 10 40 27.9 34.8 -2.3 0.0 -29 703 No stop 21 36 40 =1825+266 16 11 40 28.0 34.6 -2.3 0.0 31 711 21 35 41 21 36 40 PSRJ1821+26 16 11 40 28.8 33.4 -2.2 0.0 -29 711 No stop 21 41 40 --- 16 16 41 29.4 32.4 -2.1 0.0 271 750 21 36 41 21 42 20 J1827+2638 16 17 21 28.7 33.4 -2.2 0.0 11 750 21 42 20 21 43 20 =1825+266 16 18 22 28.9 33.2 -2.2 0.0 60 757 21 42 21 21 43 20 PSRJ1821+26 16 18 22 29.6 32.0 -2.1 0.0 -29 757 No stop 21 48 20 --- 16 23 22 30.2 30.9 -2.0 0.0 271 796 21 43 21 21 48 20 J1827+2638 16 23 22 29.5 32.1 -2.1 0.0 -29 796 No stop 21 49 20 =1825+266 16 24 23 29.6 31.9 -2.1 0.0 31 804 21 48 21 21 49 20 PSRJ1821+26 16 24 23 30.3 30.7 -2.0 0.0 -29 804 No stop 21 54 20 --- 16 29 23 30.9 29.5 -1.9 0.0 271 842 21 49 21 21 55 00 J1827+2638 16 30 03 30.3 30.6 -2.0 0.0 11 842 21 55 00 21 56 00 =1825+266 16 31 04 30.4 30.4 -2.0 0.0 60 850 21 55 01 21 56 00 PSRJ1821+26 16 31 04 31.0 29.2 -1.9 0.0 -29 850 No stop 22 01 00 --- 16 36 04 31.6 28.0 -1.8 0.0 271 889 21 56 01 22 01 00 J1827+2638 16 36 04 30.9 29.3 -1.9 0.0 -29 889 No stop 22 02 00 =1825+266 16 37 05 31.0 29.1 -1.9 0.0 31 897 22 01 01 22 02 00 PSRJ1821+26 16 37 05 31.7 27.8 -1.8 0.0 -29 897 No stop 22 07 00 --- 16 42 05 32.2 26.6 -1.7 0.0 271 935 22 02 01 22 07 40 J1827+2638 16 42 46 31.6 27.8 -1.8 0.0 11 935 22 07 40 22 08 40 =1825+266 16 43 46 31.8 27.5 -1.7 0.0 60 943 22 07 41 22 08 40 PSRJ1821+26 16 43 46 32.4 26.2 -1.6 0.0 -29 943 No stop 22 13 40 --- 16 48 47 32.9 25.0 -1.6 0.0 271 982 22 08 41 22 13 40 J1827+2638 16 48 47 32.3 26.4 -1.7 0.0 -29 982 No stop 22 14 40 =1825+266 16 49 47 32.4 26.1 -1.6 0.0 31 989 22 13 41 Schedule for HART (Code Hh ) Page 5 Astrometry for three FAST discovered pulsars 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 ---------------------------------------------------------------------------------------- --- Sun 2 Jun 2019 Day 153 --- 22 14 40 PSRJ1821+26 16 49 47 33.0 24.8 -1.5 0.0 -29 989 No stop 22 19 40 --- 16 54 48 33.4 23.6 -1.5 0.0 271 1028 22 14 41 22 20 20 J1827+2638 16 55 28 32.9 24.8 -1.5 0.0 11 1028 22 20 20 22 21 20 =1825+266 16 56 28 33.0 24.5 -1.5 0.0 60 1036 22 20 21 22 21 20 PSRJ1821+26 16 56 28 33.6 23.1 -1.4 0.0 -29 1036 No stop 22 26 20 --- 17 01 29 34.0 21.9 -1.3 0.0 271 1074 22 21 21 22 26 20 J1827+2638 17 01 29 33.5 23.3 -1.4 0.0 -29 1074 No stop 22 27 20 =1825+266 17 02 29 33.6 23.0 -1.4 0.0 31 1082 22 26 21 22 27 20 PSRJ1821+26 17 02 29 34.1 21.7 -1.3 0.0 -29 1082 No stop 22 32 20 --- 17 07 30 34.5 20.4 -1.2 0.0 271 1121 22 27 21 22 33 00 J1827+2638 17 08 10 34.0 21.6 -1.3 0.0 11 1121 22 33 00 22 34 00 =1825+266 17 09 10 34.1 21.4 -1.3 0.0 60 1128 22 33 01 22 34 00 PSRJ1821+26 17 09 10 34.6 20.0 -1.2 0.0 -29 1128 No stop 22 39 00 --- 17 14 11 35.0 18.7 -1.1 0.0 271 1167 22 34 01 22 39 00 J1827+2638 17 14 11 34.5 20.1 -1.2 0.0 -29 1167 No stop 22 40 00 =1825+266 17 15 11 34.6 19.9 -1.2 0.0 31 1175 22 39 01 22 40 00 PSRJ1821+26 17 15 11 35.1 18.4 -1.1 0.0 -29 1175 No stop 22 45 00 --- 17 20 12 35.4 17.1 -1.0 0.0 271 1213 22 40 01 22 45 40 J1827+2638 17 20 52 35.0 18.4 -1.1 0.0 11 1213 22 45 40 22 46 40 =1825+266 17 21 52 35.1 18.1 -1.1 0.0 60 1221 22 45 41 22 46 40 PSRJ1821+26 17 21 52 35.5 16.7 -1.0 0.0 -29 1221 No stop 22 51 40 --- 17 26 53 35.8 15.3 -0.9 0.0 271 1260 22 46 41 22 51 40 J1827+2638 17 26 53 35.4 16.8 -1.0 0.0 -29 1260 No stop 22 52 40 =1825+266 17 27 53 35.5 16.6 -1.0 0.0 31 1268 22 51 41 22 52 40 PSRJ1821+26 17 27 53 35.9 15.1 -0.9 0.0 -29 1268 No stop 22 57 40 --- 17 32 54 36.2 13.7 -0.8 0.0 271 1306 22 52 41 22 58 20 J1827+2638 17 33 34 35.8 15.1 -0.9 0.0 11 1306 22 58 20 22 59 20 =1825+266 17 34 34 35.9 14.8 -0.9 0.0 60 1314 22 58 21 22 59 20 PSRJ1821+26 17 34 34 36.3 13.3 -0.8 0.0 -29 1314 No stop 23 04 20 --- 17 39 35 36.5 11.9 -0.7 0.0 271 1353 22 59 21 Schedule for HART (Code Hh ) Page 6 Astrometry for three FAST discovered pulsars 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 ---------------------------------------------------------------------------------------- --- Sun 2 Jun 2019 Day 153 --- 23 04 20 J1827+2638 17 39 35 36.2 13.5 -0.8 0.0 -29 1353 No stop 23 05 20 =1825+266 17 40 35 36.2 13.2 -0.8 0.0 31 1360 23 04 21 23 05 20 PSRJ1821+26 17 40 35 36.5 11.7 -0.7 0.0 -29 1360 No stop 23 10 20 --- 17 45 36 36.8 10.3 -0.6 0.0 271 1399 23 05 21 23 11 00 J1827+2638 17 46 16 36.5 11.7 -0.7 0.0 11 1399 23 11 00 23 12 00 =1825+266 17 47 16 36.5 11.4 -0.7 0.0 60 1407 23 11 01 23 12 00 PSRJ1821+26 17 47 16 36.8 9.8 -0.6 0.0 -29 1407 No stop 23 17 00 --- 17 52 17 37.0 8.4 -0.5 0.0 271 1445 23 12 01 23 17 00 J1827+2638 17 52 17 36.8 10.0 -0.6 0.0 -29 1445 No stop 23 18 00 =1825+266 17 53 17 36.8 9.7 -0.6 0.0 31 1453 23 17 01 23 18 00 PSRJ1821+26 17 53 17 37.0 8.2 -0.5 0.0 -29 1453 No stop 23 23 00 --- 17 58 18 37.2 6.8 -0.4 0.0 271 1492 23 18 01 23 23 40 J1827+2638 17 58 58 37.0 8.2 -0.5 0.0 11 1492 23 23 40 23 24 40 =1825+266 17 59 58 37.0 7.9 -0.5 0.0 60 1499 23 23 41 23 24 40 PSRJ1821+26 17 59 58 37.2 6.3 -0.4 0.0 -29 1499 No stop 23 29 40 --- 18 04 59 37.3 4.9 -0.3 0.0 271 1538 23 24 41 23 29 40 J1827+2638 18 04 59 37.2 6.5 -0.4 0.0 -29 1538 No stop 23 30 40 =1825+266 18 05 59 37.2 6.2 -0.4 0.0 31 1546 23 29 41 23 30 40 PSRJ1821+26 18 05 59 37.4 4.6 -0.3 0.0 -29 1546 No stop 23 35 40 --- 18 11 00 37.4 3.2 -0.2 0.0 271 1584 23 30 41 23 36 20 J1827+2638 18 11 40 37.3 4.6 -0.3 0.0 11 1584 23 36 20 23 37 20 =1825+266 18 12 40 37.3 4.3 -0.3 0.0 60 1592 23 36 21 23 40 20 J1642+3948 18 15 41 20.9 341.2 1.5 0.0 100 1592 23 40 20 23 55 20 =3C345 18 30 43 19.8 338.4 1.8 0.0 900 1708 23 40 21 --- Start: Sun 2 Jun 2019 Day 153 -- Stop: Mon 3 Jun 2019 Day 154 --- 23 58 20 J2253+1608 18 33 44 13.8 63.9 -4.4 0.0 -31 1708 23 58 20 00 13 20 =3C454.3 18 48 46 16.8 61.9 -4.1 0.0 869 1824 23 58 21 03 52 50 J2253+1608 22 28 52 47.4 9.3 -0.4 0.0 13145 1824 03 52 50 04 07 50 =3C454.3 22 43 55 47.8 3.9 -0.2 0.0 900 1940 03 52 51 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq.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: 8 Station: HART Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 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 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 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 = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 100.49 100.49 100.49 100.49 132.49 132.49 132.49 132.49 164.49 164.49 164.49 164.49 196.49 196.49 196.49 196.49 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 9 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) * PSRJ1821+26 18 19 37.203357 * 18 21 37.700000 18 22 25.036569 0.00 26 34 10.29717 * 26 35 40.40000 26 36 14.82137 0.00 From catalog imbedded in main SCHED input file. * PSRJ2053+47 20 51 31.283991 * 20 53 12.100000 20 53 51.693054 0.00 47 15 43.10320 * 47 27 07.60000 47 31 18.11550 0.00 From catalog imbedded in main SCHED input file. * PSRJ2336+48 23 34 22.400030 * 23 36 48.200000 23 37 43.857634 0.00 48 10 28.77202 * 48 27 05.00000 48 33 09.31410 0.00 From catalog imbedded in main SCHED input file. 3C345 16 41 17.606229 * 16 42 58.809967 16 43 39.082666 0.79 * J1642+3948 39 54 10.81492 * 39 48 36.99399 39 46 33.26029 0.59 1641+399 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1642+39 GSFC 2016a X/S astro solution, 53724 observations. 1825+266 18 25 19.613641 * 18 27 20.134570 18 28 07.468435 0.27 * J1827+2638 26 36 29.22901 * 26 38 24.15140 26 39 07.81597 0.50 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 58 observations. 2100+468 21 00 33.500167 * 21 02 17.056074 21 02 57.629572 0.38 * J2102+4702 46 50 23.37641 * 47 02 16.25338 47 06 37.27722 0.39 J2102+47 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 41 observations. 3C454.3 22 51 29.519739 * 22 53 57.747939 22 54 54.353563 0.65 * J2253+1608 15 52 54.34808 * 16 08 53.56091 16 14 53.21443 0.73 2251+158 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 observations. 2323+478 23 23 22.550407 * 23 25 44.912246 23 26 39.333943 0.26 * J2325+4806 47 49 55.33098 * 48 06 25.28761 48 12 27.44042 0.25 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 75 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 PSRJ1821+26sess219.L1024 1 2 3 4 5 6 7 8 9 10 13 14 2.833 240.031 PSRJ2053+47sess219.L1024 1 2 3 4 5 6 7 8 10 13 14 2.833 187.775 PSRJ2336+48sess219.L1024 1 2 3 4 5 6 7 8 10 13 14 3.000 194.095 J1642+3948 sess219.L1024 1 2 3 4 5 6 7 9 10 13 0.250 16.500 J1827+2638 sess219.L1024 1 2 3 4 5 6 7 8 9 10 13 14 0.600 45.900 J2102+4702 sess219.L1024 1 2 3 4 5 6 7 8 10 13 14 0.600 34.094 J2253+1608 sess219.L1024 1 2 3 4 5 6 7 8 9 10 13 14 0.500 39.645 J2325+4806 sess219.L1024 1 2 3 4 5 6 7 8 10 13 14 0.636 32.325 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) PSRJ1821+26 125.5 PSRJ2053+47 90.4 PSRJ2336+48 64.6 J1642+3948 118.0 J1827+2638 124.9 J2102+4702 89.4 J2253+1608 81.3 J2325+4806 66.5 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