COVER INFORMATION Station: WSTRBORK (Code Wb ) Experiment: Confirmation of close dual quasars at z=0.6-2.5 Exp. Code: ES103H Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Yiping SHU Address: Purple Mountain Observatory, Chinese Academy of Sciences No. 10 Yuanhua Road Nanjing China Phone: +86 15946854256 EMAIL: yiping.shu@pmo.ac.cn Fax: Phone during observation: +86 15946854256 Observing mode: vlbi Notes: # Please turn PHASE CAL ON # COVER LETTER: Schedule for WSTRBORK (Code Wb ) Page 2 Confirmation of close dual quasars at z=0.6-2.5 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 24 Feb 2023 Day 55 --- Next scan frequencies: 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 371.49 371.49 371.49 371.49 435.49 435.49 435.49 435.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 16 51 30 SDSSJ0933+47 03 35 07 36.1 56.6 -6.0 0.0 0 0 16 51 30 16 54 30 --- 03 38 07 36.5 57.1 -5.9 0.0 180 23 16 51 31 16 55 00 J0934+4908 03 38 37 37.4 55.6 -6.0 0.0 12 23 16 55 00 16 57 00 =0930+493 03 40 38 37.6 55.9 -5.9 0.0 120 39 16 55 01 16 57 00 SDSSJ0933+47 03 40 38 36.8 57.4 -5.9 0.0 -18 39 No stop 17 00 00 --- 03 43 38 37.2 57.8 -5.9 0.0 162 62 16 57 01 17 00 00 J0934+4908 03 43 38 38.0 56.3 -5.9 0.0 -18 62 No stop 17 02 00 =0930+493 03 45 38 38.3 56.5 -5.8 0.0 102 77 17 00 01 17 02 00 SDSSJ0933+47 03 45 38 37.4 58.1 -5.8 0.0 -18 77 No stop 17 05 00 --- 03 48 39 37.8 58.5 -5.8 0.0 162 100 17 02 01 17 05 30 J0934+4908 03 49 09 38.7 57.0 -5.8 0.0 12 100 17 05 30 17 07 30 =0930+493 03 51 09 39.0 57.3 -5.7 0.0 120 116 17 05 31 17 07 30 SDSSJ0933+47 03 51 09 38.1 58.9 -5.7 0.0 -18 116 No stop 17 10 30 --- 03 54 10 38.5 59.3 -5.7 0.0 162 139 17 07 31 17 10 30 J0934+4908 03 54 10 39.3 57.7 -5.7 0.0 -18 139 No stop 17 12 30 =0930+493 03 56 10 39.6 57.9 -5.7 0.0 102 155 17 10 31 17 12 30 SDSSJ0933+47 03 56 10 38.8 59.6 -5.6 0.0 -18 155 No stop 17 15 30 --- 03 59 11 39.2 60.0 -5.6 0.0 162 178 17 12 31 17 16 00 J0934+4908 03 59 41 40.1 58.4 -5.6 0.0 12 178 17 16 00 17 18 00 =0930+493 04 01 41 40.3 58.7 -5.6 0.0 120 193 17 16 01 17 18 00 SDSSJ0933+47 04 01 41 39.5 60.3 -5.6 0.0 -18 193 No stop 17 21 00 --- 04 04 41 39.9 60.7 -5.5 0.0 162 216 17 18 01 17 21 00 J0934+4908 04 04 41 40.7 59.1 -5.5 0.0 -18 216 No stop 17 23 00 =0930+493 04 06 42 41.0 59.3 -5.5 0.0 102 232 17 21 01 17 23 00 SDSSJ0933+47 04 06 42 40.2 61.0 -5.5 0.0 -18 232 No stop 17 26 00 --- 04 09 42 40.6 61.4 -5.4 0.0 162 255 17 23 01 17 26 30 J0934+4908 04 10 12 41.4 59.8 -5.4 0.0 12 255 17 26 30 17 28 30 =0930+493 04 12 13 41.7 60.1 -5.4 0.0 120 271 17 26 31 Schedule for WSTRBORK (Code Wb ) Page 3 Confirmation of close dual quasars at z=0.6-2.5 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 24 Feb 2023 Day 55 --- 17 28 30 SDSSJ0933+47 04 12 13 40.9 61.8 -5.4 0.0 -18 271 No stop 17 31 30 --- 04 15 13 41.3 62.2 -5.3 0.0 162 294 17 28 31 17 31 30 J0934+4908 04 15 13 42.1 60.5 -5.3 0.0 -18 294 No stop 17 33 30 =0930+493 04 17 14 42.3 60.7 -5.3 0.0 102 309 17 31 31 17 33 30 SDSSJ0933+47 04 17 14 41.6 62.5 -5.3 0.0 -18 309 No stop 17 36 30 --- 04 20 14 42.0 62.9 -5.2 0.0 162 332 17 33 31 17 37 00 J0934+4908 04 20 44 42.8 61.2 -5.3 0.0 12 332 17 37 00 17 39 00 =0930+493 04 22 44 43.1 61.5 -5.2 0.0 120 348 17 37 01 17 39 00 SDSSJ0933+47 04 22 44 42.3 63.2 -5.2 0.0 -18 348 No stop 17 42 00 --- 04 25 45 42.7 63.6 -5.2 0.0 162 371 17 39 01 17 42 00 J0934+4908 04 25 45 43.5 61.9 -5.2 0.0 -18 371 No stop 17 44 00 =0930+493 04 27 45 43.7 62.1 -5.1 0.0 102 386 17 42 01 17 44 00 SDSSJ0933+47 04 27 45 43.0 63.9 -5.1 0.0 -18 386 No stop 17 47 00 --- 04 30 46 43.4 64.3 -5.1 0.0 162 410 17 44 01 17 47 30 J0934+4908 04 31 16 44.2 62.6 -5.1 0.0 12 410 17 47 30 17 49 30 =0930+493 04 33 16 44.5 62.9 -5.0 0.0 120 425 17 47 31 17 49 30 SDSSJ0933+47 04 33 16 43.7 64.7 -5.0 0.0 -18 425 No stop 17 52 30 --- 04 36 17 44.1 65.1 -5.0 0.0 162 448 17 49 31 17 52 30 J0934+4908 04 36 17 44.9 63.3 -5.0 0.0 -18 448 No stop 17 54 30 =0930+493 04 38 17 45.1 63.5 -5.0 0.0 102 464 17 52 31 17 54 30 SDSSJ0933+47 04 38 17 44.4 65.4 -4.9 0.0 -18 464 No stop 17 57 30 --- 04 41 17 44.8 65.8 -4.9 0.0 162 487 17 54 31 17 58 00 J0934+4908 04 41 48 45.6 64.0 -4.9 0.0 12 487 17 58 00 18 00 00 =0930+493 04 43 48 45.9 64.2 -4.9 0.0 120 502 17 58 01 18 00 00 SDSSJ0933+47 04 43 48 45.2 66.1 -4.9 0.0 -18 502 No stop 18 03 00 --- 04 46 48 45.6 66.5 -4.8 0.0 162 526 18 00 01 18 03 00 J0934+4908 04 46 48 46.3 64.6 -4.8 0.0 -18 526 No stop 18 05 00 =0930+493 04 48 49 46.6 64.9 -4.8 0.0 102 541 18 03 01 18 05 00 SDSSJ0933+47 04 48 49 45.9 66.8 -4.8 0.0 -18 541 No stop 18 08 00 --- 04 51 49 46.3 67.2 -4.7 0.0 162 564 18 05 01 Schedule for WSTRBORK (Code Wb ) Page 4 Confirmation of close dual quasars at z=0.6-2.5 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 24 Feb 2023 Day 55 --- 18 08 30 J0934+4908 04 52 19 47.0 65.4 -4.7 0.0 12 564 18 08 30 18 10 30 =0930+493 04 54 20 47.3 65.6 -4.7 0.0 120 580 18 08 31 18 10 30 SDSSJ0933+47 04 54 20 46.6 67.6 -4.7 0.0 -18 580 No stop 18 13 30 --- 04 57 20 47.0 68.0 -4.6 0.0 162 603 18 10 31 18 13 30 J0934+4908 04 57 20 47.7 66.0 -4.6 0.0 -18 603 No stop 18 15 30 =0930+493 04 59 20 48.0 66.3 -4.6 0.0 102 618 18 13 31 18 15 30 SDSSJ0933+47 04 59 20 47.3 68.3 -4.6 0.0 -18 618 No stop 18 18 30 --- 05 02 21 47.7 68.7 -4.5 0.0 162 642 18 15 31 18 19 00 J0934+4908 05 02 51 48.5 66.8 -4.5 0.0 12 642 18 19 00 18 21 00 =0930+493 05 04 51 48.8 67.0 -4.5 0.0 120 657 18 19 01 18 21 00 SDSSJ0933+47 05 04 51 48.1 69.0 -4.5 0.0 -18 657 No stop 18 24 00 --- 05 07 52 48.5 69.4 -4.5 0.0 162 680 18 21 01 18 24 00 J0934+4908 05 07 52 49.2 67.4 -4.5 0.0 -18 680 No stop 18 26 00 =0930+493 05 09 52 49.5 67.7 -4.4 0.0 102 696 18 24 01 18 27 00 J0927+3902 05 10 52 44.7 81.0 -4.3 0.0 13 696 18 27 00 18 32 00 =4C39.25 05 15 53 45.5 81.9 -4.2 0.0 300 734 18 27 01 18 33 00 J0934+4908 05 16 53 50.5 68.6 -4.3 0.0 13 734 18 33 00 18 38 00 =0930+493 05 21 54 51.2 69.3 -4.2 0.0 300 773 18 33 01 18 38 00 SDSSJ0933+47 05 21 54 50.5 71.4 -4.2 0.0 -18 773 No stop 18 41 00 --- 05 24 55 50.9 71.8 -4.2 0.0 162 796 18 38 01 18 41 30 J0934+4908 05 25 25 51.7 69.8 -4.2 0.0 12 796 18 41 30 18 43 30 =0930+493 05 27 25 51.9 70.0 -4.1 0.0 120 812 18 41 31 18 43 30 SDSSJ0933+47 05 27 25 51.3 72.2 -4.1 0.0 -18 812 No stop 18 46 30 --- 05 30 26 51.7 72.6 -4.1 0.0 162 835 18 43 31 18 46 30 J0934+4908 05 30 26 52.4 70.4 -4.1 0.0 -18 835 No stop 18 48 30 =0930+493 05 32 26 52.7 70.7 -4.1 0.0 102 850 18 46 31 18 48 30 SDSSJ0933+47 05 32 26 52.0 72.9 -4.0 0.0 -18 850 No stop 18 51 30 --- 05 35 26 52.5 73.3 -4.0 0.0 162 873 18 48 31 18 52 00 J0934+4908 05 35 56 53.2 71.2 -4.0 0.0 12 873 18 52 00 18 54 00 =0930+493 05 37 57 53.4 71.4 -4.0 0.0 120 889 18 52 01 Schedule for WSTRBORK (Code Wb ) Page 5 Confirmation of close dual quasars at z=0.6-2.5 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 24 Feb 2023 Day 55 --- 18 54 00 SDSSJ0933+47 05 37 57 52.8 73.7 -3.9 0.0 -18 889 No stop 18 57 00 --- 05 40 57 53.3 74.1 -3.9 0.0 162 912 18 54 01 18 57 00 J0934+4908 05 40 57 53.9 71.8 -3.9 0.0 -18 912 No stop 18 59 00 =0930+493 05 42 58 54.2 72.1 -3.9 0.0 102 927 18 57 01 18 59 00 SDSSJ0933+47 05 42 58 53.6 74.4 -3.9 0.0 -18 927 No stop 19 02 00 --- 05 45 58 54.0 74.9 -3.8 0.0 162 951 18 59 01 19 02 30 J0934+4908 05 46 28 54.7 72.6 -3.8 0.0 12 951 19 02 30 19 04 30 =0930+493 05 48 28 54.9 72.9 -3.8 0.0 120 966 19 02 31 19 04 30 SDSSJ0933+47 05 48 28 54.4 75.2 -3.8 0.0 -18 966 No stop 19 07 30 --- 05 51 29 54.8 75.7 -3.7 0.0 162 989 19 04 31 19 07 30 J0934+4908 05 51 29 55.4 73.3 -3.7 0.0 -18 989 No stop 19 09 30 =0930+493 05 53 29 55.7 73.5 -3.7 0.0 102 1005 19 07 31 19 09 30 SDSSJ0933+47 05 53 29 55.1 76.0 -3.7 0.0 -18 1005 No stop 19 12 30 --- 05 56 30 55.5 76.4 -3.6 0.0 162 1028 19 09 31 19 13 00 J0934+4908 05 57 00 56.2 74.0 -3.6 0.0 12 1028 19 13 00 19 15 00 =0930+493 05 59 00 56.5 74.3 -3.6 0.0 120 1043 19 13 01 19 15 00 SDSSJ0933+47 05 59 00 55.9 76.8 -3.6 0.0 -18 1043 No stop 19 18 00 --- 06 02 01 56.3 77.2 -3.5 0.0 162 1067 19 15 01 19 18 00 J0934+4908 06 02 01 56.9 74.7 -3.6 0.0 -18 1067 No stop 19 20 00 =0930+493 06 04 01 57.2 75.0 -3.5 0.0 102 1082 19 18 01 19 20 00 SDSSJ0933+47 06 04 01 56.6 77.5 -3.5 0.0 -18 1082 No stop 19 23 00 --- 06 07 02 57.1 78.0 -3.5 0.0 162 1105 19 20 01 19 23 30 J0934+4908 06 07 32 57.7 75.5 -3.5 0.0 12 1105 19 23 30 19 25 30 =0930+493 06 09 32 58.0 75.8 -3.4 0.0 120 1121 19 23 31 19 25 30 SDSSJ0933+47 06 09 32 57.4 78.4 -3.4 0.0 -18 1121 No stop 19 28 30 --- 06 12 32 57.9 78.8 -3.4 0.0 162 1144 19 25 31 19 28 30 J0934+4908 06 12 32 58.4 76.2 -3.4 0.0 -18 1144 No stop 19 30 30 =0930+493 06 14 33 58.7 76.5 -3.4 0.0 102 1159 19 28 31 19 30 30 SDSSJ0933+47 06 14 33 58.2 79.1 -3.3 0.0 -18 1159 No stop 19 33 30 --- 06 17 33 58.6 79.6 -3.3 0.0 162 1183 19 30 31 Schedule for WSTRBORK (Code Wb ) Page 6 Confirmation of close dual quasars at z=0.6-2.5 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 24 Feb 2023 Day 55 --- 19 34 00 J0934+4908 06 18 03 59.3 77.0 -3.3 0.0 12 1183 19 34 00 19 36 00 =0930+493 06 20 04 59.5 77.3 -3.3 0.0 120 1198 19 34 01 19 36 00 SDSSJ0933+47 06 20 04 59.0 80.0 -3.2 0.0 -18 1198 No stop 19 39 00 --- 06 23 04 59.5 80.4 -3.2 0.0 162 1221 19 36 01 19 39 00 J0934+4908 06 23 04 60.0 77.7 -3.2 0.0 -18 1221 No stop 19 41 00 =0930+493 06 25 04 60.3 78.0 -3.2 0.0 102 1237 19 39 01 19 41 00 SDSSJ0933+47 06 25 04 59.7 80.8 -3.2 0.0 -18 1237 No stop 19 44 00 --- 06 28 05 60.2 81.2 -3.1 0.0 162 1260 19 41 01 19 44 30 J0934+4908 06 28 35 60.8 78.5 -3.1 0.0 12 1260 19 44 30 19 46 30 =0930+493 06 30 35 61.1 78.8 -3.1 0.0 120 1275 19 44 31 19 46 30 SDSSJ0933+47 06 30 35 60.6 81.6 -3.1 0.0 -18 1275 No stop 19 49 30 --- 06 33 36 61.0 82.1 -3.0 0.0 162 1298 19 46 31 19 49 30 J0934+4908 06 33 36 61.5 79.2 -3.0 0.0 -18 1298 No stop 19 51 30 =0930+493 06 35 36 61.8 79.5 -3.0 0.0 102 1314 19 49 31 19 51 30 SDSSJ0933+47 06 35 36 61.3 82.4 -3.0 0.0 -18 1314 No stop 19 54 30 --- 06 38 37 61.8 82.9 -2.9 0.0 162 1337 19 51 31 19 55 00 J0934+4908 06 39 07 62.4 80.0 -2.9 0.0 12 1337 19 55 00 19 57 00 =0930+493 06 41 07 62.7 80.3 -2.9 0.0 120 1353 19 55 01 19 57 00 SDSSJ0933+47 06 41 07 62.1 83.4 -2.9 0.0 -18 1353 No stop 20 00 00 --- 06 44 08 62.6 83.9 -2.8 0.0 162 1376 19 57 01 20 00 00 J0934+4908 06 44 08 63.1 80.8 -2.9 0.0 -18 1376 No stop 20 02 00 =0930+493 06 46 08 63.4 81.1 -2.8 0.0 102 1391 20 00 01 20 02 00 SDSSJ0933+47 06 46 08 62.9 84.2 -2.8 0.0 -18 1391 No stop 20 05 00 --- 06 49 08 63.3 84.7 -2.8 0.0 162 1414 20 02 01 20 05 30 J0934+4908 06 49 38 63.9 81.6 -2.8 0.0 12 1414 20 05 30 20 07 30 =0930+493 06 51 39 64.2 81.9 -2.7 0.0 120 1430 20 05 31 20 07 30 SDSSJ0933+47 06 51 39 63.7 85.1 -2.7 0.0 -18 1430 No stop 20 10 30 --- 06 54 39 64.2 85.7 -2.7 0.0 162 1453 20 07 31 20 10 30 J0934+4908 06 54 39 64.7 82.4 -2.7 0.0 -18 1453 No stop 20 12 30 =0930+493 06 56 40 65.0 82.7 -2.7 0.0 102 1469 20 10 31 Schedule for WSTRBORK (Code Wb ) Page 7 Confirmation of close dual quasars at z=0.6-2.5 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 24 Feb 2023 Day 55 --- 20 12 30 SDSSJ0933+47 06 56 40 64.5 86.0 -2.6 0.0 -18 1469 No stop 20 15 30 --- 06 59 40 64.9 86.6 -2.6 0.0 162 1492 20 12 31 20 16 00 J0934+4908 07 00 10 65.5 83.3 -2.6 0.0 12 1492 20 16 00 20 18 00 =0930+493 07 02 11 65.8 83.6 -2.6 0.0 120 1507 20 16 01 20 18 00 SDSSJ0933+47 07 02 11 65.3 87.0 -2.5 0.0 -18 1507 No stop 20 21 00 --- 07 05 11 65.8 87.6 -2.5 0.0 162 1530 20 18 01 20 21 00 J0934+4908 07 05 11 66.3 84.1 -2.5 0.0 -18 1530 No stop 20 23 00 =0930+493 07 07 11 66.6 84.4 -2.5 0.0 102 1546 20 21 01 20 24 00 J0927+3902 07 08 12 62.3 106.1 -2.3 0.0 13 1546 20 24 00 20 30 00 =4C39.25 07 14 13 63.1 107.8 -2.2 0.0 360 1592 20 24 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.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: 9 Station: WSTRBORK 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= 4587.00 4587.00 4587.00 4587.00 4587.00 4587.00 4587.00 4587.00 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 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 371.49 371.49 371.49 371.49 435.49 435.49 435.49 435.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 9 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) * SDSSJ0933+47 09 30 03.015463 * 09 33 21.120000 09 34 54.048427 0.00 47 52 35.27416 * 47 39 15.91000 47 33 07.69278 0.00 From catalog imbedded in main SCHED input file. 4C39.25 09 23 55.319216 * 09 27 03.013937 09 28 30.893641 0.31 * J0927+3902 39 15 23.56644 * 39 02 20.85185 38 56 19.73393 0.16 0923+392 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0927+39 GSFC 2016a X/S astro solution, 250526 observations. 0930+493 09 30 55.520302 * 09 34 15.762161 09 35 49.729181 0.19 * J0934+4908 49 21 43.43738 * 49 08 21.72954 49 02 12.53422 0.14 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 139 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 SDSSJ0933+4sess123.C2048 1 2 3 4 5 6 7 8 9 2.000 62.667 J0927+3902 sess123.C2048 1 2 3 4 5 6 7 8 9 0.267 8.810 J0934+4908 sess123.C2048 1 2 3 4 5 6 7 8 9 1.500 43.761 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) SDSSJ0933+47 140.0 J0927+3902 147.3 J0934+4908 138.7 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