COVER INFORMATION Station: JODRELL1 (Code Jb ) 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 JODRELL1 (Code Jb ) 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: 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 16 00 00 1933+655 18 09 51 73.7 31.8 -1.4 -129.9 0 0 16 00 00 16 01 00 --- 18 10 51 73.8 31.6 -1.4 -130.4 60 8 16 00 01 16 01 00 1933+655 18 10 51 73.8 31.6 -1.4 -130.4 -6 8 No stop 16 04 45 --- 18 14 37 74.1 30.6 -1.3 -132.1 219 37 16 01 01 16 05 15 1927+654 18 15 07 74.7 29.0 -1.2 -135.3 9 37 16 05 15 16 09 05 --- 18 18 58 75.0 27.9 -1.1 -137.2 230 66 16 05 16 16 10 05 1927+654 18 19 58 75.0 27.7 -1.1 -137.7 52 66 16 10 05 16 14 05 --- 18 23 58 75.3 26.4 -1.1 -139.8 240 97 16 10 06 16 14 05 1933+655 18 23 58 74.8 28.1 -1.2 -136.7 -22 97 No stop 16 15 05 --- 18 24 59 74.8 27.8 -1.2 -137.2 38 105 16 14 06 16 15 35 1927+654 18 25 29 75.4 26.0 -1.0 -140.6 7 105 16 15 35 16 19 20 --- 18 29 14 75.7 24.7 -1.0 -142.6 225 134 16 15 36 16 20 20 1927+654 18 30 14 75.7 24.4 -1.0 -143.2 52 134 16 20 20 16 24 20 --- 18 34 15 76.0 23.0 -0.9 -145.4 240 165 16 20 21 16 24 20 1933+655 18 34 15 75.5 25.0 -1.0 -142.0 -23 165 No stop 16 25 20 --- 18 35 15 75.5 24.7 -1.0 -142.6 37 173 16 24 21 16 25 50 1927+654 18 35 45 76.0 22.5 -0.9 -146.3 6 173 16 25 50 16 29 35 --- 18 39 31 76.3 21.1 -0.8 -148.5 225 202 16 25 51 16 30 35 1927+654 18 40 31 76.3 20.8 -0.8 -149.1 51 202 16 30 35 16 34 35 --- 18 44 32 76.5 19.2 -0.7 -151.5 240 233 16 30 36 16 34 35 1933+655 18 44 32 76.1 21.5 -0.8 -147.8 -24 233 No stop 16 35 35 --- 18 45 32 76.1 21.1 -0.8 -148.3 36 240 16 34 36 16 36 05 1927+654 18 46 02 76.6 18.6 -0.7 -152.4 5 240 16 36 05 16 39 50 --- 18 49 48 76.8 17.1 -0.6 -154.7 225 269 16 36 06 16 40 50 1927+654 18 50 48 76.8 16.7 -0.6 -155.3 51 269 16 40 50 16 44 50 --- 18 54 48 77.0 15.1 -0.5 -157.9 240 300 16 40 51 16 44 50 1933+655 18 54 48 76.6 17.6 -0.7 -153.9 -25 300 No stop 16 45 50 --- 18 55 49 76.6 17.2 -0.6 -154.5 35 308 16 44 51 Schedule for JODRELL1 (Code Jb ) 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 46 20 1927+654 18 56 19 77.0 14.4 -0.5 -158.8 4 308 16 46 20 16 50 05 --- 19 00 04 77.2 12.8 -0.5 -161.3 225 337 16 46 21 16 51 05 1927+654 19 01 04 77.2 12.3 -0.4 -161.9 51 337 16 51 05 16 55 05 --- 19 05 05 77.3 10.5 -0.4 -164.6 240 368 16 51 06 16 55 05 1933+655 19 05 05 77.0 13.3 -0.5 -160.4 -26 368 No stop 16 56 05 --- 19 06 05 77.0 12.9 -0.5 -161.0 34 376 16 55 06 16 56 35 1927+654 19 06 35 77.3 9.9 -0.3 -165.6 2 376 16 56 35 17 00 20 --- 19 10 21 77.4 8.1 -0.3 -168.2 225 404 16 56 36 17 01 20 1927+654 19 11 21 77.5 7.7 -0.3 -168.9 51 404 17 01 20 17 05 20 --- 19 15 22 77.5 5.8 -0.2 -171.6 240 435 17 01 21 17 05 20 1933+655 19 15 22 77.3 8.8 -0.3 -167.2 -27 435 No stop 17 06 20 --- 19 16 22 77.3 8.3 -0.3 -167.9 33 443 17 05 21 17 06 50 1927+654 19 16 52 77.5 5.1 -0.2 -172.6 2 443 17 06 50 17 10 35 --- 19 20 38 77.6 3.3 -0.1 -175.3 225 472 17 06 51 17 11 35 1927+654 19 21 38 77.6 2.8 -0.1 -175.9 51 472 17 11 35 17 15 35 --- 19 25 38 77.6 0.9 -0.0 -178.7 240 503 17 11 36 17 15 35 1933+655 19 25 38 77.5 4.0 -0.1 -174.2 -27 503 No stop 17 16 35 --- 19 26 39 77.5 3.5 -0.1 -174.9 33 511 17 15 36 17 17 05 1927+654 19 27 09 77.6 0.1 -0.0 -179.8 1 511 17 17 05 17 20 50 --- 19 30 54 77.6 -1.7 0.1 177.6 225 540 17 17 06 17 21 50 1927+654 19 31 55 77.6 -2.1 0.1 176.9 51 540 17 21 50 17 25 50 --- 19 35 55 77.6 -4.1 0.1 174.1 240 571 17 21 51 17 25 50 1933+655 19 35 55 77.5 -0.9 0.0 178.7 -28 571 No stop 17 26 50 --- 19 36 55 77.5 -1.4 0.0 178.0 32 578 17 25 51 17 27 20 1927+654 19 37 25 77.6 -4.8 0.2 173.1 1 578 17 27 20 17 31 05 --- 19 41 11 77.5 -6.6 0.2 170.5 225 607 17 27 21 17 32 05 1927+654 19 42 11 77.5 -7.0 0.2 169.8 51 607 17 32 05 17 36 05 --- 19 46 12 77.4 -8.9 0.3 167.0 240 638 17 32 06 17 36 05 1933+655 19 46 12 77.4 -5.7 0.2 171.6 -28 638 No stop 17 37 05 --- 19 47 12 77.4 -6.2 0.2 171.0 32 646 17 36 06 Schedule for JODRELL1 (Code Jb ) 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 37 35 1927+654 19 47 42 77.4 -9.6 0.3 166.0 1 646 17 37 35 17 41 20 --- 19 51 28 77.3 -11.3 0.4 163.5 225 675 17 37 36 17 42 20 1927+654 19 52 28 77.2 -11.7 0.4 162.8 51 675 17 42 20 17 46 20 --- 19 56 29 77.1 -13.5 0.5 160.2 240 706 17 42 21 17 46 20 1933+655 19 56 29 77.2 -10.4 0.4 164.7 -27 706 No stop 17 47 20 --- 19 57 29 77.2 -10.9 0.4 164.0 33 714 17 46 21 17 47 50 1927+654 19 57 59 77.0 -14.2 0.5 159.2 1 714 17 47 50 17 51 35 --- 20 01 44 76.9 -15.8 0.6 156.8 225 743 17 47 51 17 52 35 1927+654 20 02 45 76.9 -16.2 0.6 156.2 51 743 17 52 35 17 56 30 --- 20 06 40 76.7 -17.8 0.7 153.7 235 773 17 52 36 17 57 00 1933+655 20 07 10 76.8 -15.1 0.6 157.8 3 773 17 57 00 18 00 00 --- 20 10 11 76.7 -16.3 0.6 155.9 180 796 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: 3 Station: JODRELL1 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= 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 Net SB= L L U U L L U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= U U L L U U L L IF = 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= 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Bandwd= 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 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