COVER INFORMATION Station: JODRELL1 (Code Jb ) Experiment: Long overdue - Measuring the Parallax and proper motion of the Crab. Ste Exp. Code: EK036C Schedule Version: 1.00 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 JODRELL1 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Sat 25 Feb 2017 Day 56 --- 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: 100.49 100.49 100.49 100.49 132.49 132.49 132.49 132.49 164.49 164.49 164.49 164.49 196.49 196.49 196.49 196.49 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 16 00 00 J0530+1331 02 13 35 34.4 116.2 -3.3 -33.5 0 0 16 00 00 16 05 00 =0528+134 02 18 36 35.1 117.5 -3.2 -33.1 300 38 16 00 01 16 07 52 CRAB 02 21 29 41.9 111.1 -3.2 -37.0 111 38 16 07 52 16 12 52 --- 02 26 29 42.6 112.3 -3.2 -36.7 300 77 16 07 53 16 13 32 J0518+2054 02 27 10 44.0 117.6 -2.9 -34.6 3 77 16 13 32 16 15 02 =0515+208 02 28 40 44.2 118.1 -2.8 -34.4 90 88 16 13 33 16 15 44 CRAB 02 29 22 43.0 113.0 -3.1 -36.4 6 88 16 15 44 16 20 44 --- 02 34 23 43.7 114.3 -3.0 -36.0 300 127 16 15 45 16 23 36 CRAB 02 37 15 44.1 115.1 -3.0 -35.8 163 127 16 23 36 16 28 36 --- 02 42 16 44.8 116.4 -2.9 -35.3 300 165 16 23 37 16 29 16 J0518+2054 02 42 56 46.1 122.0 -2.6 -32.9 2 165 16 29 16 16 30 46 =0515+208 02 44 26 46.3 122.4 -2.6 -32.7 90 177 16 29 17 16 31 28 CRAB 02 45 08 45.1 117.2 -2.8 -35.1 5 177 16 31 28 16 36 28 --- 02 50 09 45.8 118.5 -2.8 -34.6 300 215 16 31 29 16 39 20 CRAB 02 53 02 46.2 119.3 -2.7 -34.3 163 215 16 39 20 16 44 20 --- 02 58 03 46.8 120.7 -2.6 -33.7 300 254 16 39 21 16 45 00 J0518+2054 02 58 43 48.0 126.6 -2.3 -31.0 1 254 16 45 00 16 46 30 =0515+208 03 00 13 48.2 127.0 -2.3 -30.8 90 265 16 45 01 16 47 12 CRAB 03 00 55 47.2 121.5 -2.6 -33.4 4 265 16 47 12 16 52 12 --- 03 05 56 47.8 123.0 -2.5 -32.8 300 304 16 47 13 16 53 02 J0530+1331 03 06 46 41.0 130.3 -2.4 -28.0 -13 304 16 53 02 16 57 02 =0528+134 03 10 47 41.5 131.4 -2.4 -27.5 227 335 16 53 03 16 59 54 CRAB 03 13 39 48.8 125.3 -2.4 -31.8 107 335 16 59 54 17 04 54 --- 03 18 40 49.4 126.8 -2.3 -31.1 300 373 16 59 55 17 05 34 J0518+2054 03 19 20 50.4 133.0 -2.0 -27.9 0 373 17 05 34 17 07 04 =0515+208 03 20 50 50.6 133.5 -2.0 -27.7 90 385 17 05 35 Schedule for JODRELL1 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Sat 25 Feb 2017 Day 56 --- 17 07 46 CRAB 03 21 32 49.7 127.7 -2.2 -30.7 3 385 17 07 46 17 12 46 --- 03 26 33 50.3 129.2 -2.2 -30.0 300 423 17 07 47 17 15 38 CRAB 03 29 26 50.7 130.1 -2.1 -29.6 163 423 17 15 38 17 20 38 --- 03 34 27 51.2 131.7 -2.0 -28.8 300 462 17 15 39 17 21 18 J0518+2054 03 35 07 52.1 138.3 -1.7 -25.3 -2 462 17 21 18 17 22 48 =0515+208 03 36 37 52.2 138.8 -1.7 -25.0 88 473 17 21 19 17 23 30 CRAB 03 37 19 51.5 132.7 -2.0 -28.3 2 473 17 23 30 17 28 30 --- 03 42 20 52.1 134.3 -1.9 -27.5 300 512 17 23 31 17 31 22 CRAB 03 45 12 52.4 135.3 -1.8 -27.0 163 512 17 31 22 17 36 22 --- 03 50 13 52.9 137.0 -1.8 -26.1 300 550 17 31 23 17 37 02 J0518+2054 03 50 53 53.5 143.8 -1.5 -22.2 -3 550 17 37 02 17 38 32 =0515+208 03 52 23 53.7 144.4 -1.4 -21.9 87 562 17 37 03 17 39 14 CRAB 03 53 06 53.2 138.0 -1.7 -25.6 1 562 17 39 14 17 44 14 --- 03 58 06 53.7 139.8 -1.6 -24.6 300 600 17 39 15 17 47 06 CRAB 04 00 59 54.0 140.8 -1.6 -24.1 163 600 17 47 06 17 52 06 --- 04 06 00 54.4 142.6 -1.5 -23.1 300 638 17 47 07 17 52 46 J0518+2054 04 06 40 54.8 149.7 -1.2 -18.8 -4 638 17 52 46 17 54 16 =0515+208 04 08 10 54.9 150.3 -1.2 -18.5 86 650 17 52 47 17 54 58 CRAB 04 08 52 54.7 143.7 -1.4 -22.5 0 650 17 54 58 17 59 58 --- 04 13 53 55.1 145.6 -1.4 -21.4 300 688 17 54 59 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess117.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: 6 Station: JODRELL1 Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 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 3 11 3 11 5 13 5 13 7 15 7 15 BBC SB= L L U U L L U U L L U U L L U U IF = A1 B1 A1 B1 A1 B1 A1 B1 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= 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= 100.49 100.49 100.49 100.49 132.49 132.49 132.49 132.49 164.49 164.49 164.49 164.49 196.49 196.49 196.49 196.49 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: 1 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 33.889523 0.00 21 58 54.53487 * 22 00 52.19100 22 01 21.27603 0.00 From catalog imbedded in main SCHED input file. 0515+208 05 15 05.041798 * 05 18 03.824513 05 19 05.105439 0.02 * J0518+2054 20 51 43.76307 * 20 54 52.49736 20 55 45.68891 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 54.614639 0.21 * J0530+1331 13 29 42.28885 * 13 31 55.14952 13 32 26.72422 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 sess117.L1024 1 2 3 4 5 6 7 8 9 12 1.167 73.193 J0518+2054 sess117.L1024 1 2 3 4 5 6 7 8 9 12 0.350 19.250 J0530+1331 sess117.L1024 1 2 3 4 5 6 7 8 9 12 0.150 9.862 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 107.0 J0518+2054 103.1 J0530+1331 105.6 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