COVER INFORMATION Station: JODRELL1 (Code Jb ) 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 JODRELL1 (Code Jb ) 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: 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: 833.51 833.51 833.51 833.51 769.51 769.51 769.51 769.51 705.51 705.51 705.51 705.51 641.51 641.51 641.51 641.51 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 16 30 00 J0927+3902 02 37 56 23.7 56.0 -6.8 -39.6 0 0 16 30 00 16 35 00 =4C39.25 02 42 57 24.3 56.8 -6.8 -40.1 300 77 16 30 01 16 36 00 J0934+4908 02 43 57 31.1 48.3 -6.9 -42.9 -3 77 16 36 00 16 41 00 =0930+493 02 48 58 31.7 49.0 -6.8 -43.5 297 155 16 36 01 16 41 00 SDSSJ0933+47 02 48 58 30.7 50.3 -6.8 -43.0 -20 155 No stop 16 44 00 --- 02 51 59 31.1 50.7 -6.7 -43.4 160 201 16 41 01 16 44 30 J0934+4908 02 52 29 32.1 49.5 -6.7 -43.9 10 201 16 44 30 16 46 30 =0930+493 02 54 29 32.3 49.7 -6.7 -44.2 120 232 16 44 31 16 46 30 SDSSJ0933+47 02 54 29 31.4 51.1 -6.7 -43.6 -21 232 No stop 16 49 30 --- 02 57 30 31.7 51.5 -6.6 -44.0 159 278 16 46 31 16 51 30 SDSSJ0933+47 02 59 30 31.9 51.8 -6.6 -44.2 112 278 16 51 30 16 54 30 --- 03 02 31 32.3 52.2 -6.5 -44.5 180 325 16 51 31 16 55 00 J0934+4908 03 03 01 33.3 50.9 -6.5 -45.1 10 325 16 55 00 16 57 00 =0930+493 03 05 01 33.5 51.2 -6.5 -45.4 120 356 16 55 01 16 57 00 SDSSJ0933+47 03 05 01 32.6 52.6 -6.5 -44.8 -21 356 No stop 17 00 00 --- 03 08 01 32.9 53.0 -6.4 -45.1 159 402 16 57 01 17 02 00 SDSSJ0933+47 03 10 02 33.2 53.3 -6.4 -45.3 112 402 17 02 00 17 05 00 --- 03 13 02 33.5 53.7 -6.4 -45.6 180 448 17 02 01 17 05 30 J0934+4908 03 13 32 34.5 52.4 -6.4 -46.3 9 448 17 05 30 17 07 30 =0930+493 03 15 33 34.8 52.6 -6.3 -46.5 120 479 17 05 31 17 07 30 SDSSJ0933+47 03 15 33 33.9 54.1 -6.3 -45.9 -21 479 No stop 17 10 30 --- 03 18 33 34.2 54.5 -6.3 -46.2 159 526 17 07 31 17 12 30 SDSSJ0933+47 03 20 33 34.5 54.8 -6.2 -46.4 112 526 17 12 30 17 15 30 --- 03 23 34 34.8 55.2 -6.2 -46.7 180 572 17 12 31 17 16 00 J0934+4908 03 24 04 35.8 53.8 -6.2 -47.5 9 572 17 16 00 17 18 00 =0930+493 03 26 04 36.0 54.1 -6.2 -47.7 120 603 17 16 01 Schedule for JODRELL1 (Code Jb ) 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 18 00 SDSSJ0933+47 03 26 04 35.1 55.6 -6.1 -47.0 -21 603 No stop 17 21 00 --- 03 29 05 35.5 56.0 -6.1 -47.3 159 649 17 18 01 17 23 00 SDSSJ0933+47 03 31 05 35.8 56.3 -6.1 -47.5 112 649 17 23 00 17 26 00 --- 03 34 06 36.1 56.7 -6.0 -47.8 180 696 17 23 01 17 26 30 J0934+4908 03 34 36 37.1 55.3 -6.0 -48.6 9 696 17 26 30 17 28 30 =0930+493 03 36 36 37.3 55.5 -6.0 -48.8 120 727 17 26 31 17 28 30 SDSSJ0933+47 03 36 36 36.5 57.0 -6.0 -48.1 -21 727 No stop 17 31 30 --- 03 39 37 36.8 57.5 -5.9 -48.4 159 773 17 28 31 17 33 30 SDSSJ0933+47 03 41 37 37.1 57.7 -5.9 -48.6 112 773 17 33 30 17 36 30 --- 03 44 37 37.5 58.2 -5.8 -48.9 180 819 17 33 31 17 37 00 J0934+4908 03 45 07 38.4 56.7 -5.8 -49.7 9 819 17 37 00 17 39 00 =0930+493 03 47 08 38.6 56.9 -5.8 -49.9 120 850 17 37 01 17 39 00 SDSSJ0933+47 03 47 08 37.8 58.5 -5.8 -49.1 -22 850 No stop 17 42 00 --- 03 50 08 38.2 58.9 -5.7 -49.4 158 897 17 39 01 17 44 00 SDSSJ0933+47 03 52 09 38.4 59.2 -5.7 -49.6 112 897 17 44 00 17 47 00 --- 03 55 09 38.8 59.6 -5.7 -49.9 180 943 17 44 01 17 47 30 J0934+4908 03 55 39 39.7 58.1 -5.7 -50.8 8 943 17 47 30 17 49 30 =0930+493 03 57 40 40.0 58.4 -5.6 -51.0 120 974 17 47 31 17 49 30 SDSSJ0933+47 03 57 40 39.1 60.0 -5.6 -50.2 -22 974 No stop 17 52 30 --- 04 00 40 39.5 60.4 -5.6 -50.4 158 1020 17 49 31 17 54 30 SDSSJ0933+47 04 02 40 39.8 60.7 -5.5 -50.6 112 1020 17 54 30 17 57 30 --- 04 05 41 40.2 61.1 -5.5 -50.9 180 1067 17 54 31 17 58 00 J0934+4908 04 06 11 41.1 59.5 -5.5 -51.9 8 1067 17 58 00 18 00 00 =0930+493 04 08 11 41.3 59.8 -5.5 -52.1 120 1098 17 58 01 18 00 00 SDSSJ0933+47 04 08 11 40.5 61.4 -5.4 -51.2 -22 1098 No stop 18 03 00 --- 04 11 12 40.9 61.9 -5.4 -51.4 158 1144 18 00 01 18 05 00 SDSSJ0933+47 04 13 12 41.2 62.1 -5.4 -51.6 112 1144 18 05 00 18 08 00 --- 04 16 13 41.6 62.6 -5.3 -51.9 180 1190 18 05 01 18 08 30 J0934+4908 04 16 43 42.4 60.9 -5.3 -52.9 8 1190 18 08 30 18 10 30 =0930+493 04 18 43 42.7 61.2 -5.3 -53.1 120 1221 18 08 31 Schedule for JODRELL1 (Code Jb ) 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 10 30 SDSSJ0933+47 04 18 43 41.9 62.9 -5.3 -52.1 -22 1221 No stop 18 13 30 --- 04 21 43 42.3 63.3 -5.2 -52.4 158 1268 18 10 31 18 15 30 SDSSJ0933+47 04 23 44 42.6 63.6 -5.2 -52.6 112 1268 18 15 30 18 18 30 --- 04 26 44 43.0 64.0 -5.1 -52.9 180 1314 18 15 31 18 19 00 J0934+4908 04 27 14 43.8 62.3 -5.1 -54.0 8 1314 18 19 00 18 21 00 =0930+493 04 29 15 44.1 62.6 -5.1 -54.1 120 1345 18 19 01 18 21 00 SDSSJ0933+47 04 29 15 43.3 64.4 -5.1 -53.1 -23 1345 No stop 18 24 00 --- 04 32 15 43.7 64.8 -5.0 -53.4 157 1391 18 21 01 18 27 00 J0927+3902 04 35 16 39.6 75.2 -4.9 -48.1 124 1391 18 27 00 18 32 00 =4C39.25 04 40 17 40.3 76.0 -4.8 -48.3 300 1469 18 27 01 18 33 00 J0934+4908 04 41 17 45.7 64.2 -4.9 -55.3 -3 1469 18 33 00 18 38 00 =0930+493 04 46 18 46.4 64.9 -4.8 -55.7 297 1546 18 33 01 18 38 00 SDSSJ0933+47 04 46 18 45.6 66.8 -4.8 -54.6 -23 1546 No stop 18 41 00 --- 04 49 18 46.1 67.2 -4.8 -54.8 157 1592 18 38 01 18 41 30 J0934+4908 04 49 48 46.8 65.3 -4.8 -56.1 7 1592 18 41 30 18 43 30 =0930+493 04 51 48 47.1 65.6 -4.7 -56.3 120 1623 18 41 31 18 43 30 SDSSJ0933+47 04 51 48 46.4 67.5 -4.7 -55.0 -23 1623 No stop 18 46 30 --- 04 54 49 46.8 68.0 -4.7 -55.3 157 1669 18 43 31 18 48 30 SDSSJ0933+47 04 56 49 47.1 68.2 -4.6 -55.4 112 1669 18 48 30 18 51 30 --- 04 59 50 47.5 68.7 -4.6 -55.7 180 1716 18 48 31 18 52 00 J0934+4908 05 00 20 48.3 66.8 -4.6 -57.0 7 1716 18 52 00 18 54 00 =0930+493 05 02 20 48.6 67.0 -4.6 -57.2 120 1747 18 52 01 18 54 00 SDSSJ0933+47 05 02 20 47.9 69.0 -4.5 -55.9 -24 1747 No stop 18 57 00 --- 05 05 21 48.3 69.4 -4.5 -56.1 156 1793 18 54 01 18 59 00 SDSSJ0933+47 05 07 21 48.6 69.7 -4.5 -56.3 112 1793 18 59 00 19 02 00 --- 05 10 21 49.0 70.1 -4.4 -56.5 180 1840 18 59 01 19 02 30 J0934+4908 05 10 52 49.7 68.2 -4.4 -57.9 6 1840 19 02 30 19 04 30 =0930+493 05 12 52 50.0 68.4 -4.4 -58.1 120 1870 19 02 31 19 04 30 SDSSJ0933+47 05 12 52 49.3 70.5 -4.4 -56.7 -24 1870 No stop 19 07 30 --- 05 15 52 49.8 70.9 -4.3 -56.9 156 1917 19 04 31 Schedule for JODRELL1 (Code Jb ) 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 --- 19 09 30 SDSSJ0933+47 05 17 53 50.0 71.2 -4.3 -57.1 112 1917 19 09 30 19 12 30 --- 05 20 53 50.5 71.6 -4.2 -57.3 180 1963 19 09 31 19 13 00 J0934+4908 05 21 23 51.2 69.6 -4.2 -58.8 6 1963 19 13 00 19 15 00 =0930+493 05 23 24 51.5 69.9 -4.2 -59.0 120 1994 19 13 01 19 15 00 SDSSJ0933+47 05 23 24 50.8 72.0 -4.2 -57.5 -24 1994 No stop 19 18 00 --- 05 26 24 51.3 72.4 -4.1 -57.7 156 2040 19 15 01 19 20 00 SDSSJ0933+47 05 28 24 51.5 72.7 -4.1 -57.9 112 2040 19 20 00 19 23 00 --- 05 31 25 52.0 73.2 -4.1 -58.1 180 2087 19 20 01 19 23 30 J0934+4908 05 31 55 52.7 71.0 -4.1 -59.7 6 2087 19 23 30 19 25 30 =0930+493 05 33 55 53.0 71.3 -4.0 -59.9 120 2118 19 23 31 19 25 30 SDSSJ0933+47 05 33 55 52.3 73.5 -4.0 -58.3 -25 2118 No stop 19 28 30 --- 05 36 56 52.8 74.0 -4.0 -58.5 155 2164 19 25 31 19 30 30 SDSSJ0933+47 05 38 56 53.1 74.3 -3.9 -58.6 112 2164 19 30 30 19 33 30 --- 05 41 57 53.5 74.7 -3.9 -58.8 180 2211 19 30 31 19 34 00 J0934+4908 05 42 27 54.2 72.5 -3.9 -60.5 5 2211 19 34 00 19 36 00 =0930+493 05 44 27 54.5 72.7 -3.9 -60.7 120 2241 19 34 01 19 36 00 SDSSJ0933+47 05 44 27 53.9 75.1 -3.8 -59.0 -25 2241 No stop 19 39 00 --- 05 47 28 54.3 75.5 -3.8 -59.2 155 2288 19 36 01 19 41 00 SDSSJ0933+47 05 49 28 54.6 75.8 -3.8 -59.3 112 2288 19 41 00 19 44 00 --- 05 52 28 55.0 76.3 -3.7 -59.5 180 2334 19 41 01 19 44 30 J0934+4908 05 52 58 55.7 73.9 -3.7 -61.3 5 2334 19 44 30 19 46 30 =0930+493 05 54 59 56.0 74.2 -3.7 -61.5 120 2365 19 44 31 19 46 30 SDSSJ0933+47 05 54 59 55.4 76.6 -3.7 -59.6 -26 2365 No stop 19 49 30 --- 05 57 59 55.8 77.1 -3.6 -59.8 154 2411 19 46 31 19 51 30 SDSSJ0933+47 06 00 00 56.1 77.4 -3.6 -59.9 112 2411 19 51 30 19 54 30 --- 06 03 00 56.6 77.8 -3.5 -60.1 180 2458 19 51 31 19 55 00 J0934+4908 06 03 30 57.2 75.4 -3.5 -62.1 5 2458 19 55 00 19 57 00 =0930+493 06 05 30 57.5 75.7 -3.5 -62.2 120 2489 19 55 01 19 57 00 SDSSJ0933+47 06 05 30 56.9 78.2 -3.5 -60.2 -26 2489 No stop 20 00 00 --- 06 08 31 57.4 78.7 -3.4 -60.4 154 2535 19 57 01 Schedule for JODRELL1 (Code Jb ) 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 --- 20 02 00 SDSSJ0933+47 06 10 31 57.7 79.0 -3.4 -60.5 112 2535 20 02 00 20 05 00 --- 06 13 32 58.1 79.5 -3.4 -60.7 180 2582 20 02 01 20 05 30 J0934+4908 06 14 02 58.7 76.9 -3.4 -62.8 4 2582 20 05 30 20 07 30 =0930+493 06 16 02 59.0 77.2 -3.3 -62.9 120 2612 20 05 31 20 07 30 SDSSJ0933+47 06 16 02 58.5 79.9 -3.3 -60.8 -26 2612 No stop 20 10 30 --- 06 19 03 58.9 80.3 -3.3 -61.0 154 2659 20 07 31 20 12 30 SDSSJ0933+47 06 21 03 59.2 80.7 -3.2 -61.0 112 2659 20 12 30 20 15 30 --- 06 24 04 59.6 81.1 -3.2 -61.2 180 2705 20 12 31 20 16 00 J0934+4908 06 24 34 60.3 78.4 -3.2 -63.4 4 2705 20 16 00 20 18 00 =0930+493 06 26 34 60.6 78.7 -3.2 -63.6 120 2736 20 16 01 20 18 00 SDSSJ0933+47 06 26 34 60.0 81.5 -3.1 -61.3 -27 2736 No stop 20 21 00 --- 06 29 34 60.5 82.0 -3.1 -61.4 153 2782 20 18 01 20 24 00 J0927+3902 06 32 35 57.0 97.6 -2.9 -49.7 104 2782 20 24 00 20 30 00 =4C39.25 06 38 36 57.9 99.0 -2.8 -49.5 360 2875 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: 2 Station: JODRELL1 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= 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 Net SB= L L U U L L U U L L U U L L U U IF SB = L L L L L L L L L L L L L L L L 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= U U L L U U L L U U L L U U L L IF = A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 1 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= 833.51 833.51 833.51 833.51 769.51 769.51 769.51 769.51 705.51 705.51 705.51 705.51 641.51 641.51 641.51 641.51 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: 1 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) * 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