COVER INFORMATION Station: IRBENE (Code Ir ) Experiment: CLAGN 1ES 1927+654 Exp. Code: EY038B Schedule Version: 4.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Xiaolong Yang Address: Shanghai Astronomical Observatory 80 Nandan Road Shanghai China Phone: +86 18810844136 EMAIL: yangxl@shao.ac.cn Fax: Phone during observation: +86 18810844136 Observing mode: Phase-referencing mode at 18cm (1024Mb/s) Notes: Schedule for IRBENE (Code Ir ) Page 2 CLAGN 1ES 1927+654 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 26 Oct 2023 Day 299 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 276.49 276.49 276.49 276.49 340.49 340.49 340.49 340.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 16 00 00 1933+655 19 46 30 81.7 -8.9 0.2 168.4 0 0 16 00 00 16 01 00 --- 19 47 30 81.7 -9.6 0.2 167.5 60 8 16 00 01 16 01 00 1933+655 19 47 30 81.7 -9.6 0.2 167.5 -3 8 No stop 16 04 45 --- 19 51 16 81.6 -12.1 0.3 164.1 222 37 16 01 01 16 05 15 1927+654 19 51 46 81.4 -17.1 0.4 157.5 25 37 16 05 15 16 09 05 --- 19 55 37 81.3 -19.5 0.5 154.3 230 66 16 05 16 16 09 05 1933+655 19 55 37 81.4 -15.0 0.4 160.2 -5 66 No stop 16 10 05 --- 19 56 37 81.4 -15.7 0.4 159.4 55 74 16 09 06 16 10 05 1927+654 19 56 37 81.2 -20.1 0.5 153.5 -5 74 No stop 16 14 05 --- 20 00 38 81.0 -22.5 0.6 150.2 235 105 16 10 06 16 14 05 1933+655 20 00 38 81.3 -18.2 0.4 155.9 -5 105 No stop 16 15 05 --- 20 01 38 81.2 -18.8 0.5 155.1 55 113 16 14 06 16 15 35 1927+654 20 02 08 81.0 -23.3 0.6 149.0 25 113 16 15 35 16 19 20 --- 20 05 53 80.8 -25.4 0.6 146.1 225 142 16 15 36 16 19 20 1933+655 20 05 53 81.0 -21.3 0.5 151.6 -5 142 No stop 16 20 20 --- 20 06 54 81.0 -21.9 0.5 150.8 55 149 16 19 21 16 20 20 1927+654 20 06 54 80.7 -25.9 0.7 145.4 -5 149 No stop 16 24 20 --- 20 10 54 80.4 -28.0 0.7 142.4 235 180 16 20 21 16 24 20 1933+655 20 10 54 80.8 -24.2 0.6 147.7 -5 180 No stop 16 25 20 --- 20 11 54 80.7 -24.7 0.6 147.0 55 188 16 24 21 16 25 50 1927+654 20 12 25 80.4 -28.7 0.7 141.4 25 188 16 25 50 16 29 35 --- 20 16 10 80.1 -30.5 0.8 138.8 225 217 16 25 51 16 29 35 1933+655 20 16 10 80.4 -26.9 0.7 143.8 -5 217 No stop 16 30 35 --- 20 17 10 80.4 -27.4 0.7 143.1 55 225 16 29 36 16 30 35 1927+654 20 17 10 80.0 -30.9 0.8 138.1 -5 225 No stop 16 34 35 --- 20 21 11 79.8 -32.6 0.9 135.5 235 256 16 30 36 16 34 35 1933+655 20 21 11 80.1 -29.3 0.8 140.3 -5 256 No stop 16 35 35 --- 20 22 11 80.1 -29.8 0.8 139.6 55 263 16 34 36 Schedule for IRBENE (Code Ir ) Page 3 CLAGN 1ES 1927+654 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 26 Oct 2023 Day 299 --- 16 36 05 1927+654 20 22 41 79.6 -33.2 0.9 134.6 25 263 16 36 05 16 39 50 --- 20 26 27 79.4 -34.7 1.0 132.3 225 292 16 36 06 16 39 50 1933+655 20 26 27 79.8 -31.6 0.9 136.8 -5 292 No stop 16 40 50 --- 20 27 27 79.7 -32.0 0.9 136.2 55 300 16 39 51 16 40 50 1927+654 20 27 27 79.3 -35.1 1.0 131.7 -5 300 No stop 16 44 50 --- 20 31 28 79.0 -36.5 1.1 129.4 235 331 16 40 51 16 44 50 1933+655 20 31 28 79.4 -33.7 1.0 133.7 -4 331 No stop 16 45 50 --- 20 32 28 79.3 -34.0 1.0 133.1 56 339 16 44 51 16 46 20 1927+654 20 32 58 78.8 -37.0 1.1 128.5 26 339 16 46 20 16 50 05 --- 20 36 44 78.5 -38.2 1.2 126.5 225 368 16 46 21 16 50 05 1933+655 20 36 44 79.0 -35.6 1.0 130.6 -4 368 No stop 16 51 05 --- 20 37 44 78.9 -35.9 1.1 130.0 56 376 16 50 06 16 51 05 1927+654 20 37 44 78.5 -38.5 1.2 126.0 -4 376 No stop 16 55 05 --- 20 41 44 78.1 -39.7 1.2 123.9 236 406 16 51 06 16 55 05 1933+655 20 41 44 78.6 -37.3 1.1 127.8 -4 406 No stop 16 56 05 --- 20 42 44 78.5 -37.6 1.1 127.2 56 414 16 55 06 16 56 35 1927+654 20 43 15 78.0 -40.1 1.3 123.1 26 414 16 56 35 17 00 20 --- 20 47 00 77.7 -41.1 1.3 121.3 225 443 16 56 36 17 00 20 1933+655 20 47 00 78.2 -38.9 1.2 125.0 -4 443 No stop 17 01 20 --- 20 48 00 78.1 -39.1 1.2 124.5 56 451 17 00 21 17 01 20 1927+654 20 48 00 77.6 -41.3 1.3 120.9 -4 451 No stop 17 05 20 --- 20 52 01 77.2 -42.3 1.4 119.0 236 482 17 01 21 17 05 20 1933+655 20 52 01 77.7 -40.2 1.3 122.5 -4 482 No stop 17 06 20 --- 20 53 01 77.7 -40.5 1.3 122.1 56 490 17 05 21 17 06 50 1927+654 20 53 31 77.1 -42.6 1.4 118.4 26 490 17 06 50 17 10 35 --- 20 57 17 76.7 -43.4 1.5 116.7 225 518 17 06 51 17 10 35 1933+655 20 57 17 77.3 -41.5 1.4 120.1 -4 518 No stop 17 11 35 --- 20 58 17 77.2 -41.8 1.4 119.6 56 526 17 10 36 17 11 35 1927+654 20 58 17 76.6 -43.6 1.5 116.3 -4 526 No stop 17 15 35 --- 21 02 18 76.3 -44.4 1.6 114.7 236 557 17 11 36 Schedule for IRBENE (Code Ir ) Page 4 CLAGN 1ES 1927+654 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 26 Oct 2023 Day 299 --- 17 15 35 1933+655 21 02 18 76.8 -42.7 1.5 117.8 -4 557 No stop 17 16 35 --- 21 03 18 76.7 -42.9 1.5 117.4 56 565 17 15 36 17 17 05 1927+654 21 03 48 76.1 -44.6 1.6 114.0 26 565 17 17 05 17 20 50 --- 21 07 34 75.8 -45.3 1.7 112.6 225 594 17 17 06 17 20 50 1933+655 21 07 34 76.3 -43.7 1.6 115.6 -4 594 No stop 17 21 50 --- 21 08 34 76.3 -43.9 1.6 115.2 56 602 17 20 51 17 21 50 1927+654 21 08 34 75.7 -45.4 1.7 112.2 -4 602 No stop 17 25 50 --- 21 12 34 75.3 -46.0 1.8 110.7 236 633 17 21 51 17 25 50 1933+655 21 12 34 75.9 -44.6 1.6 113.6 -4 633 No stop 17 26 50 --- 21 13 35 75.8 -44.8 1.7 113.2 56 640 17 25 51 17 27 20 1927+654 21 14 05 75.1 -46.3 1.8 110.1 26 640 17 27 20 17 31 05 --- 21 17 50 74.8 -46.7 1.8 108.8 225 669 17 27 21 17 31 05 1933+655 21 17 50 75.4 -45.4 1.7 111.6 -4 669 No stop 17 32 05 --- 21 18 50 75.3 -45.6 1.7 111.2 56 677 17 31 06 17 32 05 1927+654 21 18 50 74.7 -46.9 1.9 108.5 -4 677 No stop 17 36 05 --- 21 22 51 74.3 -47.3 1.9 107.1 236 708 17 32 06 17 36 05 1933+655 21 22 51 74.9 -46.1 1.8 109.8 -4 708 No stop 17 37 05 --- 21 23 51 74.8 -46.3 1.8 109.4 56 716 17 36 06 17 37 35 1927+654 21 24 21 74.1 -47.5 1.9 106.6 26 716 17 37 35 17 41 20 --- 21 28 07 73.8 -47.9 2.0 105.4 225 745 17 37 36 17 41 20 1933+655 21 28 07 74.4 -46.8 1.9 107.9 -4 745 No stop 17 42 20 --- 21 29 07 74.3 -46.9 1.9 107.6 56 752 17 41 21 17 42 20 1927+654 21 29 07 73.7 -48.0 2.0 105.0 -4 752 No stop 17 46 20 --- 21 33 08 73.3 -48.4 2.1 103.8 236 783 17 42 21 17 46 20 1933+655 21 33 08 73.9 -47.4 2.0 106.3 -4 783 No stop 17 47 20 --- 21 34 08 73.8 -47.5 2.0 105.9 56 791 17 46 21 17 47 50 1927+654 21 34 38 73.1 -48.5 2.1 103.3 27 791 17 47 50 17 51 35 --- 21 38 24 72.7 -48.8 2.2 102.2 225 820 17 47 51 17 51 35 1933+655 21 38 24 73.4 -47.9 2.1 104.6 -3 820 No stop 17 52 35 --- 21 39 24 73.3 -48.0 2.1 104.3 57 828 17 51 36 Schedule for IRBENE (Code Ir ) Page 5 CLAGN 1ES 1927+654 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 26 Oct 2023 Day 299 --- 17 52 35 1927+654 21 39 24 72.6 -48.8 2.2 101.9 -3 828 No stop 17 56 30 --- 21 43 19 72.2 -49.1 2.3 100.7 232 858 17 52 36 17 57 00 1933+655 21 43 49 72.8 -48.3 2.2 102.9 27 858 17 57 00 18 00 00 --- 21 46 50 72.5 -48.5 2.2 102.0 180 881 17 57 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess323.L1024 --- 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: 7 Station: IRBENE 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= 1350.00 1350.00 1350.00 1350.00 1350.00 1350.00 1350.00 1350.00 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 C2 A2 C2 A2 C2 A2 C2 The following frequency sets based on these setups were used. Frequency Set: 9 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= 276.49 276.49 276.49 276.49 340.49 340.49 340.49 340.49 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) * 1927+654 19 27 01.925575 * 19 27 19.540000 19 27 26.388495 0.00 65 27 42.27538 * 65 33 54.31000 65 37 02.62567 0.00 From catalog imbedded in main SCHED input file. * 1933+655 19 33 38.733765 * 19 33 57.337278 19 34 04.690383 0.22 J1933+6540 65 33 38.07675 * 65 40 16.82831 65 43 38.02256 0.09 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 273 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 1927+654 sess323.L1024 1 2 3 4 5 6 7 8 9 1.421 48.810 1933+655 sess323.L1024 1 2 3 4 5 6 7 8 9 0.479 11.795 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) 1927+654 97.7 1933+655 98.4 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