COVER INFORMATION Station: KUNMING (Code Km ) Experiment: Confirmation of close dual quasars at z=0.6-2.5 Exp. Code: ES103F 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 # V2: Updated the station list COVER LETTER: Schedule for KUNMING (Code Km ) 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 ---------------------------------------------------------------------------------------- --- Sun 6 Nov 2022 Day 310 --- Next scan frequencies: 8319.49 8319.49 8319.49 8319.49 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 8511.49 8511.49 8511.49 8511.49 Next BBC frequencies: 219.49 219.49 219.49 219.49 283.49 283.49 283.49 283.49 347.49 347.49 347.49 347.49 411.49 411.49 411.49 411.49 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 06 00 00 J1229+0203 15 52 57 36.0 252.9 3.4 60.1 0 0 06 00 00 06 06 00 =3C273B 15 58 58 34.7 253.8 3.5 60.6 360 92 06 00 01 06 07 00 J1308+0401 15 59 58 43.9 249.8 2.8 58.5 42 92 06 07 00 06 13 00 =1305+042 16 05 59 42.6 250.9 2.9 59.1 360 185 06 07 01 06 13 00 SDSSJ1305+05 16 05 59 42.7 253.0 3.0 60.5 -6 185 No stop 06 16 00 --- 16 09 00 42.1 253.5 3.0 60.7 174 231 06 13 01 06 16 30 J1308+0401 16 09 30 41.9 251.5 3.0 59.4 24 231 06 16 30 06 18 30 =1305+042 16 11 30 41.5 251.8 3.0 59.6 120 262 06 16 31 06 18 30 SDSSJ1305+05 16 11 30 41.5 253.9 3.1 61.0 -6 262 No stop 06 21 30 --- 16 14 31 40.9 254.4 3.1 61.2 174 308 06 18 31 06 21 30 J1308+0401 16 14 31 40.8 252.3 3.1 59.9 -6 308 No stop 06 23 30 =1305+042 16 16 31 40.4 252.6 3.1 60.1 114 338 06 21 31 06 23 30 SDSSJ1305+05 16 16 31 40.4 254.7 3.2 61.4 -6 338 No stop 06 26 30 --- 16 19 31 39.8 255.1 3.2 61.6 174 385 06 23 31 06 27 00 J1308+0401 16 20 01 39.6 253.2 3.2 60.4 24 385 06 27 00 06 29 00 =1305+042 16 22 02 39.2 253.5 3.2 60.6 120 415 06 27 01 06 29 00 SDSSJ1305+05 16 22 02 39.2 255.5 3.3 61.8 -6 415 No stop 06 32 00 --- 16 25 02 38.6 256.0 3.3 62.0 174 462 06 29 01 06 32 00 J1308+0401 16 25 02 38.5 254.0 3.3 60.8 -6 462 No stop 06 34 00 =1305+042 16 27 03 38.1 254.3 3.3 61.0 114 492 06 32 01 06 34 00 SDSSJ1305+05 16 27 03 38.1 256.3 3.3 62.1 -6 492 No stop 06 37 00 --- 16 30 03 37.5 256.7 3.4 62.3 174 538 06 34 01 06 37 30 J1308+0401 16 30 33 37.3 254.8 3.4 61.2 24 538 06 37 30 06 39 30 =1305+042 16 32 33 36.9 255.1 3.4 61.4 120 569 06 37 31 06 39 30 SDSSJ1305+05 16 32 33 36.9 257.1 3.4 62.5 -6 569 No stop 06 42 30 --- 16 35 34 36.3 257.5 3.5 62.7 174 615 06 39 31 Schedule for KUNMING (Code Km ) 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 ---------------------------------------------------------------------------------------- --- Sun 6 Nov 2022 Day 310 --- 06 42 30 J1308+0401 16 35 34 36.2 255.6 3.4 61.6 -6 615 No stop 06 44 30 =1305+042 16 37 34 35.8 255.9 3.5 61.7 114 646 06 42 31 06 44 30 SDSSJ1305+05 16 37 34 35.8 257.8 3.5 62.8 -6 646 No stop 06 47 30 --- 16 40 35 35.1 258.2 3.6 63.0 174 692 06 44 31 06 48 00 J1308+0401 16 41 05 35.0 256.4 3.5 62.0 24 692 06 48 00 06 50 00 =1305+042 16 43 05 34.6 256.7 3.6 62.1 120 723 06 48 01 06 50 00 SDSSJ1305+05 16 43 05 34.6 258.6 3.6 63.1 -6 723 No stop 06 53 00 --- 16 46 06 33.9 259.0 3.7 63.3 174 769 06 50 01 06 53 00 J1308+0401 16 46 06 33.9 257.1 3.6 62.3 -6 769 No stop 06 55 00 =1305+042 16 48 06 33.5 257.4 3.6 62.4 114 800 06 53 01 06 55 00 SDSSJ1305+05 16 48 06 33.5 259.2 3.7 63.4 -6 800 No stop 06 58 00 --- 16 51 07 32.8 259.6 3.7 63.5 174 846 06 55 01 06 58 30 J1308+0401 16 51 37 32.7 257.9 3.7 62.6 24 846 06 58 30 07 00 30 =1305+042 16 53 37 32.2 258.1 3.7 62.7 120 877 06 58 31 07 00 30 SDSSJ1305+05 16 53 37 32.2 260.0 3.8 63.6 -6 877 No stop 07 03 30 --- 16 56 37 31.6 260.4 3.8 63.8 174 923 07 00 31 07 03 30 J1308+0401 16 56 37 31.6 258.5 3.8 62.9 -6 923 No stop 07 05 30 =1305+042 16 58 38 31.1 258.8 3.8 63.0 114 954 07 03 31 07 05 30 SDSSJ1305+05 16 58 38 31.1 260.6 3.9 63.9 -6 954 No stop 07 08 30 --- 17 01 38 30.5 261.0 3.9 64.0 174 1000 07 05 31 07 09 00 J1308+0401 17 02 08 30.4 259.3 3.9 63.2 24 1000 07 09 00 07 11 00 =1305+042 17 04 09 29.9 259.5 3.9 63.3 120 1031 07 09 01 07 11 00 SDSSJ1305+05 17 04 09 29.9 261.3 4.0 64.1 -6 1031 No stop 07 14 00 --- 17 07 09 29.2 261.7 4.0 64.2 174 1077 07 11 01 07 14 00 J1308+0401 17 07 09 29.2 259.9 4.0 63.4 -6 1077 No stop 07 16 00 =1305+042 17 09 09 28.8 260.2 4.0 63.5 114 1108 07 14 01 07 16 00 SDSSJ1305+05 17 09 09 28.8 261.9 4.0 64.3 -6 1108 No stop 07 19 00 --- 17 12 10 28.1 262.3 4.1 64.4 174 1154 07 16 01 07 19 30 J1308+0401 17 12 40 28.0 260.6 4.1 63.6 24 1154 07 19 30 07 21 30 =1305+042 17 14 40 27.6 260.9 4.1 63.7 120 1185 07 19 31 Schedule for KUNMING (Code Km ) 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 ---------------------------------------------------------------------------------------- --- Sun 6 Nov 2022 Day 310 --- 07 21 30 SDSSJ1305+05 17 14 40 27.5 262.6 4.1 64.5 -6 1185 No stop 07 24 30 --- 17 17 41 26.9 263.0 4.2 64.6 174 1231 07 21 31 07 24 30 J1308+0401 17 17 41 26.9 261.2 4.1 63.8 -6 1231 No stop 07 26 30 =1305+042 17 19 41 26.4 261.5 4.2 63.9 114 1262 07 24 31 07 26 30 SDSSJ1305+05 17 19 41 26.4 263.2 4.2 64.6 -6 1262 No stop 07 29 30 --- 17 22 42 25.7 263.6 4.3 64.7 174 1308 07 26 31 07 30 00 J1308+0401 17 23 12 25.6 261.9 4.2 64.0 24 1308 07 30 00 07 32 00 =1305+042 17 25 12 25.2 262.1 4.3 64.1 120 1338 07 30 01 07 32 00 SDSSJ1305+05 17 25 12 25.2 263.9 4.3 64.8 -6 1338 No stop 07 35 00 --- 17 28 13 24.5 264.2 4.4 64.9 174 1385 07 32 01 07 35 00 J1308+0401 17 28 13 24.5 262.5 4.3 64.2 -6 1385 No stop 07 37 00 =1305+042 17 30 13 24.1 262.7 4.3 64.3 114 1415 07 35 01 07 37 00 SDSSJ1305+05 17 30 13 24.0 264.4 4.4 64.9 -6 1415 No stop 07 40 00 --- 17 33 13 23.4 264.8 4.4 65.0 174 1462 07 37 01 07 40 30 J1308+0401 17 33 43 23.3 263.2 4.4 64.4 24 1462 07 40 30 07 42 30 =1305+042 17 35 44 22.8 263.4 4.4 64.4 120 1492 07 40 31 07 42 30 SDSSJ1305+05 17 35 44 22.8 265.1 4.5 65.0 -6 1492 No stop 07 45 30 --- 17 38 44 22.1 265.4 4.5 65.1 174 1538 07 42 31 07 45 30 J1308+0401 17 38 44 22.2 263.7 4.5 64.5 -6 1538 No stop 07 47 30 =1305+042 17 40 45 21.7 264.0 4.5 64.6 114 1569 07 45 31 07 47 30 SDSSJ1305+05 17 40 45 21.7 265.6 4.6 65.1 -6 1569 No stop 07 50 30 --- 17 43 45 21.0 266.0 4.6 65.2 174 1615 07 47 31 07 51 00 J1308+0401 17 44 15 20.9 264.4 4.6 64.7 24 1615 07 51 00 07 53 00 =1305+042 17 46 16 20.5 264.6 4.6 64.7 120 1646 07 51 01 07 53 00 SDSSJ1305+05 17 46 16 20.4 266.3 4.7 65.2 -6 1646 No stop 07 56 00 --- 17 49 16 19.7 266.6 4.7 65.3 174 1692 07 53 01 07 56 00 J1308+0401 17 49 16 19.8 264.9 4.7 64.8 -6 1692 No stop 07 58 00 =1305+042 17 51 16 19.3 265.2 4.7 64.8 114 1723 07 56 01 08 04 00 J1308+0401 17 57 17 18.0 265.8 4.8 64.9 358 1723 08 04 00 08 09 00 =1305+042 18 02 18 16.8 266.4 4.9 65.0 300 1800 08 04 01 Schedule for KUNMING (Code Km ) 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 ---------------------------------------------------------------------------------------- --- Sun 6 Nov 2022 Day 310 --- 08 09 00 SDSSJ1305+05 18 02 18 16.8 268.0 4.9 65.4 -6 1800 No stop 08 12 00 --- 18 05 19 16.1 268.3 5.0 65.5 174 1846 08 09 01 08 12 30 J1308+0401 18 05 49 16.0 266.8 4.9 65.1 24 1846 08 12 30 08 14 30 =1305+042 18 07 49 15.6 267.0 5.0 65.1 120 1877 08 12 31 08 14 30 SDSSJ1305+05 18 07 49 15.5 268.6 5.0 65.5 -6 1877 No stop 08 17 30 --- 18 10 50 14.9 268.9 5.1 65.5 174 1923 08 14 31 08 17 30 J1308+0401 18 10 50 14.9 267.3 5.0 65.1 -6 1923 No stop 08 19 30 =1305+042 18 12 50 14.5 267.5 5.1 65.1 114 1954 08 17 31 08 19 30 SDSSJ1305+05 18 12 50 14.4 269.2 5.1 65.5 -6 1954 No stop 08 22 30 --- 18 15 50 13.7 269.5 5.2 65.5 174 2000 08 19 31 08 23 00 J1308+0401 18 16 20 13.7 267.9 5.1 65.2 24 2000 08 23 00 08 25 00 =1305+042 18 18 21 13.2 268.1 5.1 65.2 120 2031 08 23 01 08 25 00 SDSSJ1305+05 18 18 21 13.2 269.7 5.2 65.5 -6 2031 No stop 08 28 00 --- 18 21 21 12.5 270.1 5.2 65.5 174 2077 08 25 01 08 28 00 J1308+0401 18 21 21 12.5 268.5 5.2 65.2 -6 2077 No stop 08 30 00 =1305+042 18 23 22 12.1 268.7 5.2 65.2 114 2108 08 28 01 08 30 00 SDSSJ1305+05 18 23 22 12.0 270.3 5.3 65.5 -6 2108 No stop 08 33 00 --- 18 26 22 11.3 270.6 5.3 65.5 174 2154 08 30 01 08 33 30 J1308+0401 18 26 52 11.3 269.1 5.3 65.2 24 2154 08 33 30 08 35 30 =1305+042 18 28 53 10.8 269.3 5.3 65.2 120 2185 08 33 31 08 35 30 SDSSJ1305+05 18 28 53 10.8 270.9 5.4 65.5 -6 2185 No stop 08 38 30 --- 18 31 53 10.1 271.2 5.4 65.5 174 2231 08 35 31 08 38 30 J1308+0401 18 31 53 10.1 269.6 5.4 65.3 -6 2231 No stop 08 40 30 =1305+042 18 33 53 9.7 269.8 5.4 65.3 114 2262 08 38 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess322.X2048 --- 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: 8 Station: KUNMING Total bit rate: 2048 Format: MARK5B 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= 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 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 5 1 5 2 6 2 6 3 7 3 7 4 8 4 8 BBC SB= L L U U L L U U L L U U L L U U IF = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 8319.49 8319.49 8319.49 8319.49 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 8511.49 8511.49 8511.49 8511.49 BBC fr= 219.49 219.49 219.49 219.49 283.49 283.49 283.49 283.49 347.49 347.49 347.49 347.49 411.49 411.49 411.49 411.49 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: 9 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * SDSSJ1305+05 13 02 55.046471 * 13 05 27.020000 13 06 34.564022 0.00 05 40 52.45613 * 05 24 49.43000 05 17 38.37685 0.00 From catalog imbedded in main SCHED input file. 3C273B 12 26 33.245835 * 12 29 06.699731 12 30 15.010801 1.03 * J1229+0203 02 19 43.30570 * 02 03 08.59820 01 55 44.26250 1.38 3C273 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc 1226+023 GSFC 2016a X/S astro solution, 32136 observations. J1229+02 1305+042 13 05 43.183402 * 13 08 15.553095 13 09 23.265879 0.21 * J1308+0401 04 17 08.92252 * 04 01 09.35114 03 54 00.09714 0.47 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 127 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 SDSSJ1305+0sess322.X2048 1 2 3 4 5 6 7 9 2.000 59.378 J1229+0203 sess322.X2048 1 2 3 4 5 6 7 9 0.283 8.057 J1308+0401 sess322.X2048 1 2 3 4 5 6 7 9 1.517 47.167 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) SDSSJ1305+05 32.5 J1229+0203 38.0 J1308+0401 31.0 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