COVER INFORMATION Station: DSS63 (Code Ro ) Experiment: Long overdue - Measuring the Parallax and proper motion of the Crab. Ste Exp. Code: EK036A Schedule Version: 2.00 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, Jb1, T6, Sr, Ro70 require extra attenuator due to high Tsys from Nebula. Schedule for DSS63 (Code Ro ) 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 18 Oct 2015 Day 291 --- 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: 230.49 230.49 230.49 230.49 262.49 262.49 262.49 262.49 294.49 294.49 294.49 294.49 326.49 326.49 326.49 326.49 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 23 00 00 J0530+1331 00 31 27 20.0 449.0 -5.0 -51.5 0 0 23 00 00 23 10 00 =0528+134 00 41 29 21.9 450.6 -4.8 -51.5 600 77 23 00 04 23 11 05 CRAB 00 42 34 26.5 442.8 -4.9 -54.6 23 77 23 11 05 23 23 25 --- 00 54 56 28.9 444.7 -4.7 -54.8 740 172 23 11 09 23 23 45 CRAB 00 55 16 28.9 444.7 -4.7 -54.8 10 172 23 23 45 23 36 15 --- 01 07 48 31.3 446.7 -4.5 -55.1 750 268 23 23 49 23 36 55 J0518+2054 01 08 28 33.9 450.5 -4.2 -54.6 14 268 23 36 55 23 37 55 =0515+208 01 09 29 34.1 450.6 -4.2 -54.6 60 275 23 36 59 23 38 35 CRAB 01 10 09 31.8 447.0 -4.4 -55.1 15 275 23 38 35 23 51 05 --- 01 22 41 34.1 449.0 -4.2 -55.2 750 371 23 38 39 --- Start: Sun 18 Oct 2015 Day 291 -- Stop: Mon 19 Oct 2015 Day 292 --- 23 51 25 CRAB 01 23 01 34.2 449.1 -4.2 -55.2 10 371 23 51 25 00 03 55 --- 01 35 33 36.6 451.1 -4.0 -55.2 750 467 23 51 29 00 04 35 J0518+2054 01 36 13 39.2 455.1 -3.7 -54.3 13 467 00 04 35 00 05 35 =0515+208 01 37 13 39.4 455.3 -3.7 -54.2 60 475 00 04 39 00 06 15 CRAB 01 37 53 37.0 451.5 -4.0 -55.2 14 475 00 06 15 00 18 45 --- 01 50 25 39.4 453.6 -3.8 -55.0 750 571 00 06 19 00 19 05 CRAB 01 50 45 39.5 453.7 -3.7 -55.0 10 571 00 19 05 00 31 35 --- 02 03 17 41.9 455.9 -3.5 -54.8 750 667 00 19 09 00 32 15 J0518+2054 02 03 58 44.5 460.3 -3.3 -53.3 12 667 00 32 15 00 33 15 =0515+208 02 04 58 44.6 460.5 -3.2 -53.3 60 675 00 32 19 00 33 55 CRAB 02 05 38 42.3 456.3 -3.5 -54.7 12 675 00 33 55 00 46 25 --- 02 18 10 44.7 458.6 -3.3 -54.3 750 771 00 33 59 00 46 45 CRAB 02 18 30 44.7 458.7 -3.3 -54.3 10 771 00 46 45 00 59 15 --- 02 31 02 47.1 461.1 -3.1 -53.7 750 867 00 46 49 Schedule for DSS63 (Code Ro ) 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 ---------------------------------------------------------------------------------------- --- Mon 19 Oct 2015 Day 292 --- 01 00 25 J0530+1331 02 32 12 42.5 471.4 -3.0 -46.8 19 867 01 00 25 01 05 00 =0528+134 02 36 48 43.3 472.4 -2.9 -46.4 275 902 01 00 29 01 06 10 CRAB 02 37 58 48.4 462.5 -3.0 -53.3 19 902 01 06 10 01 18 30 --- 02 50 20 50.7 465.2 -2.8 -52.4 740 996 01 06 14 01 18 50 CRAB 02 50 40 50.7 465.3 -2.7 -52.4 10 996 01 18 50 01 31 10 --- 03 03 02 53.0 468.2 -2.5 -51.3 740 1091 01 18 54 01 32 00 J0518+2054 03 03 52 55.3 474.0 -2.3 -48.1 16 1091 01 32 00 01 33 00 =0515+208 03 04 53 55.5 474.3 -2.2 -48.0 60 1099 01 32 04 01 33 50 CRAB 03 05 43 53.5 468.8 -2.5 -51.0 17 1099 01 33 50 01 46 10 --- 03 18 05 55.7 472.0 -2.3 -49.6 740 1194 01 33 54 01 46 30 CRAB 03 18 25 55.7 472.0 -2.3 -49.6 10 1194 01 46 30 01 58 50 --- 03 30 47 57.9 475.5 -2.1 -47.8 740 1288 01 46 34 01 59 40 J0518+2054 03 31 37 60.0 482.5 -1.8 -43.4 12 1288 01 59 40 02 00 40 =0515+208 03 32 37 60.2 482.8 -1.8 -43.2 60 1296 01 59 44 02 01 30 CRAB 03 33 27 58.3 476.3 -2.0 -47.4 13 1296 02 01 30 02 13 50 --- 03 45 49 60.4 480.2 -1.8 -45.2 740 1391 02 01 34 02 14 10 CRAB 03 46 09 60.5 480.3 -1.8 -45.2 10 1391 02 14 10 02 20 00 --- 03 52 00 61.4 482.3 -1.7 -44.0 350 1436 02 14 14 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess315.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.4/catalogs/freq_RDBE.dat: ro18cm LO from Harbison, e-mail 20/03/97. other values guesses ****** Only 200.00 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 5 Station: DSS63 Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 0.50 Disk used to record data. 1st LO= 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 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 = 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 7 BBC SB= L L U U L L U U L L U U L L U U IF = 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on these setups were used. Frequency Set: 14 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= 230.49 230.49 230.49 230.49 262.49 262.49 262.49 262.49 294.49 294.49 294.49 294.49 326.49 326.49 326.49 326.49 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: 14 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 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 29.692879 0.00 21 58 54.53487 * 22 00 52.19100 22 01 18.48119 0.00 From catalog imbedded in main SCHED input file. 0515+208 05 15 05.041798 * 05 18 03.824513 05 19 01.125354 0.02 * J0518+2054 20 51 43.76307 * 20 54 52.49736 20 55 41.97620 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 50.712033 0.21 * J0530+1331 13 29 42.28885 * 13 31 55.14952 13 32 29.02251 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 sess315.L1024 1 2 3 4 5 6 7 8 9 12 13 14 3.303 283.739 J0518+2054 sess315.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.100 8.453 J0530+1331 sess315.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.318 26.243 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 121.0 J0518+2054 124.9 J0530+1331 121.8 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