COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: Long overdue - Measuring the Parallax and proper motion of the Crab. Ste Exp. Code: EK036D Schedule Version: 3.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: Franz Kirsten Address: Curtin Institute of Radio Astronomy Curtin University Perth Australia Phone: +61 8 9266 9103 EMAIL: franz.kirsten@curtin.edu.au Fax: +61 8 9266 9246 Phone during observation: +61 8 9266 9103 Observing mode: Continuum 18cm (1 Gb/s), pulsar gating Notes: Target pulsar bright enough to fringe on Fringe finder / bandpass cal: J0518+2054 / J0530+1331 PCAL off, AGC off at all stations Ef, T6, DSS63 require extra attenuator due to high Tsys from Nebula. Schedule for ZELENCHK (Code Zc ) Page 2 Long overdue - Measuring the Parallax and proper motion of the Crab. Ste 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 28 May 2017 Day 148 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 350.49 350.49 350.49 350.49 382.49 382.49 382.49 382.49 414.49 414.49 414.49 414.49 446.49 446.49 446.49 446.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 09 30 00 J0530+1331 04 40 44 57.8 516.2 -0.9 -17.5 0 0 09 30 00 09 34 00 =0528+134 04 44 45 58.1 517.9 -0.8 -16.2 240 31 09 30 01 09 34 54 J0518+2054 04 45 39 66.1 520.4 -0.6 -15.0 23 31 09 34 54 09 36 09 =0515+208 04 47 04 66.2 521.2 -0.5 -14.4 75 40 09 34 55 09 36 45 CRAB 04 47 30 66.1 511.6 -0.8 -21.7 3 40 09 36 45 09 42 15 --- 04 53 01 66.5 514.6 -0.7 -19.5 330 83 09 36 46 09 43 02 J0518+2054 04 53 48 66.5 525.0 -0.4 -11.5 13 83 09 43 02 09 44 17 =0515+208 04 55 13 66.6 525.9 -0.4 -10.9 75 92 09 43 03 09 44 53 CRAB 04 55 40 66.7 516.0 -0.7 -18.4 3 92 09 44 53 09 50 23 --- 05 01 11 67.1 519.1 -0.6 -16.1 330 135 09 44 54 09 51 11 J0518+2054 05 01 58 66.9 529.8 -0.3 -7.9 13 135 09 51 11 09 52 26 =0515+208 05 03 24 66.9 530.6 -0.3 -7.2 75 144 09 51 12 09 53 02 CRAB 05 03 50 67.3 520.7 -0.5 -14.9 3 144 09 53 02 09 58 32 --- 05 09 21 67.6 523.9 -0.4 -12.5 330 187 09 53 03 09 59 20 J0518+2054 05 10 09 67.1 534.7 -0.1 -4.1 14 187 09 59 20 10 00 35 =0515+208 05 11 34 67.1 535.5 -0.1 -3.5 75 196 09 59 21 10 01 12 CRAB 05 12 01 67.7 525.5 -0.4 -11.2 4 196 10 01 12 10 06 42 --- 05 17 32 67.9 528.8 -0.3 -8.7 330 238 10 01 13 10 07 31 J0518+2054 05 18 21 67.1 539.6 -0.0 -0.3 14 238 10 07 31 10 08 46 =0515+208 05 19 46 67.1 540.4 0.0 0.3 75 248 10 07 32 10 09 23 CRAB 05 20 13 68.0 530.5 -0.3 -7.4 4 248 10 09 23 10 14 53 --- 05 25 44 68.1 533.9 -0.2 -4.8 330 290 10 09 24 10 15 42 J0518+2054 05 26 33 67.1 544.5 0.1 3.5 15 290 10 15 42 10 16 57 =0515+208 05 27 58 67.1 545.3 0.1 4.1 75 300 10 15 43 10 17 34 CRAB 05 28 26 68.2 535.6 -0.1 -3.5 5 300 10 17 34 10 23 04 --- 05 33 57 68.2 539.0 -0.0 -0.8 330 342 10 17 35 Schedule for ZELENCHK (Code Zc ) Page 3 Long overdue - Measuring the Parallax and proper motion of the Crab. Ste 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 28 May 2017 Day 148 --- 10 23 53 J0518+2054 05 34 46 66.9 549.4 0.3 7.2 16 342 10 23 53 10 25 08 =0515+208 05 36 12 66.9 550.2 0.3 7.9 75 352 10 23 54 10 25 47 CRAB 05 36 40 68.2 540.7 0.0 0.5 5 352 10 25 47 10 31 17 --- 05 42 11 68.2 544.1 0.1 3.2 330 394 10 25 48 10 32 06 J0518+2054 05 43 00 66.6 554.2 0.4 10.9 16 394 10 32 06 10 33 21 =0515+208 05 44 26 66.5 555.0 0.4 11.6 75 404 10 32 07 10 34 00 CRAB 05 44 54 68.1 545.8 0.2 4.5 6 404 10 34 00 10 39 30 --- 05 50 25 68.0 549.2 0.2 7.2 330 446 10 34 01 10 40 29 J0530+1331 05 51 24 59.5 549.4 0.3 6.9 27 446 10 40 29 10 43 19 =0528+134 05 54 25 59.4 550.8 0.4 8.0 170 468 10 40 30 10 44 13 J0518+2054 05 55 09 65.9 561.1 0.6 16.1 20 468 10 44 13 10 45 28 =0515+208 05 56 34 65.8 561.8 0.6 16.7 75 478 10 44 14 10 46 07 CRAB 05 57 03 67.8 553.3 0.4 10.3 8 478 10 46 07 10 51 32 --- 06 02 29 67.5 556.5 0.4 12.8 325 519 10 46 08 10 52 23 J0518+2054 06 03 20 65.4 565.5 0.7 19.4 19 519 10 52 23 10 53 38 =0515+208 06 04 45 65.2 566.2 0.8 20.0 75 529 10 52 24 10 54 17 CRAB 06 05 15 67.4 558.2 0.5 14.0 9 529 10 54 17 10 59 42 --- 06 10 41 67.1 561.3 0.6 16.4 325 571 10 54 18 11 00 34 J0518+2054 06 11 32 64.7 569.7 0.9 22.5 21 571 11 00 34 11 01 49 =0515+208 06 12 58 64.5 570.4 0.9 23.0 75 580 11 00 35 11 02 29 CRAB 06 13 28 66.9 562.9 0.6 17.6 10 580 11 02 29 11 07 54 --- 06 18 54 66.5 565.9 0.7 19.9 325 622 11 02 30 11 08 46 J0518+2054 06 19 46 63.9 573.7 1.0 25.4 22 622 11 08 46 11 10 01 =0515+208 06 21 11 63.7 574.4 1.0 25.9 75 631 11 08 47 11 10 41 CRAB 06 21 42 66.2 567.4 0.8 21.0 12 631 11 10 41 11 16 06 --- 06 27 08 65.8 570.3 0.9 23.1 325 673 11 10 42 11 16 58 J0518+2054 06 28 00 63.0 577.6 1.1 28.1 23 673 11 16 58 11 18 13 =0515+208 06 29 25 62.9 578.2 1.2 28.6 75 683 11 16 59 11 18 55 CRAB 06 29 56 65.5 571.7 0.9 24.2 13 683 11 18 55 11 24 20 --- 06 35 22 65.0 574.4 1.0 26.1 325 724 11 18 56 Schedule for ZELENCHK (Code Zc ) Page 4 Long overdue - Measuring the Parallax and proper motion of the Crab. Ste 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 28 May 2017 Day 148 --- 11 25 12 J0518+2054 06 36 15 62.1 581.2 1.3 30.6 25 724 11 25 12 11 26 27 =0515+208 06 37 40 61.9 581.8 1.3 31.0 75 734 11 25 13 11 27 09 CRAB 06 38 12 64.7 575.8 1.0 27.1 14 734 11 27 09 11 32 34 --- 06 43 38 64.1 578.4 1.1 28.9 325 776 11 27 10 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess217.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.4/catalogs/freq_RDBE.dat: kvzr_l passed by Alexey Melnikov, Mar2014 ****** Only 251.02 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 1 Station: ZELENCHK Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 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 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 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: 4 Setup file default. Used with PCAL = off LO sum= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 350.49 350.49 350.49 350.49 382.49 382.49 382.49 382.49 414.49 414.49 414.49 414.49 446.49 446.49 446.49 446.49 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 4 7 8 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) * CRAB 05 31 31.388685 * 05 34 31.934000 05 35 32.725126 0.00 21 58 54.53487 * 22 00 52.19100 22 01 20.36697 0.00 From catalog imbedded in main SCHED input file. 0515+208 05 15 05.041798 * 05 18 03.824513 05 19 04.020525 0.02 * J0518+2054 20 51 43.76307 * 20 54 52.49736 20 55 44.66304 0.03 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 1774 observations. 0528+134 05 28 06.759216 * 05 30 56.416747 05 31 53.508504 0.21 * J0530+1331 13 29 42.28885 * 13 31 55.14952 13 32 27.78037 0.24 J0530+13 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 135789 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 CRAB sess217.L1024 1 2 3 4 5 6 9 10 11 12 13 1 + 1.275 114.582 J0518+2054 sess217.L1024 1 2 3 4 5 6 9 10 11 12 13 1 + 0.292 25.729 J0530+1331 sess217.L1024 1 2 3 4 5 6 9 10 11 12 13 1 + 0.114 10.364 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) CRAB 17.1 J0518+2054 13.3 J0530+1331 18.5 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