COVER INFORMATION Station: VLA27 (Code Y ) Experiment: Probing pulsar emission with picoarcsecond precision - B1133+16 Exp. Code: GK049C 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 90cm (256 Mb/s), pulsar gating Notes: Target pulsar bright enough to fringe on Fringe finder / bandpass cal: J1125+2610 PCAL off, AGC off at all stations power switching and AGC off also at VLA Schedule for VLA27 (Code Y ) Page 2 Probing pulsar emission with picoarcsecond precision - B1133+16 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 4 Mar 2017 Day 63 --- Next scan frequencies: 312.25 312.25 320.25 320.25 328.25 328.25 336.25 336.25 Next BBC frequencies: 539.65 539.65 547.65 547.65 555.65 555.65 563.65 563.65 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 04 09 00 PHASING-SRC 07 47 00 37.0 86.7 -4.0 -63.1 0 0 Stopped 04 10 00 --- 07 48 00 37.2 86.9 -3.9 -63.1 60 0 04 10 00 PHASING-SRC 07 48 00 37.2 86.9 -3.9 -63.1 -6 0 04 10 06 04 11 00 --- 07 49 00 37.4 87.0 -3.9 -63.2 54 2 04 10 01 04 11 20 TARGET 07 49 20 36.0 94.9 -3.8 -59.0 2 2 04 11 20 04 21 20 --- 07 59 22 38.0 96.5 -3.6 -58.8 600 21 04 11 21 04 22 06 PHASE-REF 08 00 08 38.0 92.5 -3.7 -60.7 34 21 04 22 06 04 23 36 --- 08 01 38 38.4 92.7 -3.7 -60.7 90 24 04 22 07 04 24 44 BP-CAL 08 02 47 45.6 86.1 -3.4 -66.9 41 24 04 24 44 04 29 44 --- 08 07 47 46.6 86.8 -3.3 -67.0 300 34 04 24 45 04 30 39 TARGET 08 08 43 40.0 98.0 -3.5 -58.5 28 34 04 30 39 04 40 39 --- 08 18 44 42.0 99.7 -3.3 -58.0 600 53 04 30 40 04 40 58 PHASING-SRC 08 19 03 43.6 91.1 -3.4 -63.3 0 53 04 40 58 04 41 58 --- 08 20 03 43.8 91.3 -3.4 -63.3 60 55 04 40 59 04 42 25 PHASE-REF 08 20 31 42.3 95.6 -3.4 -60.4 14 55 04 42 25 04 43 55 --- 08 22 01 42.6 95.8 -3.4 -60.3 90 58 04 42 26 04 44 32 TARGET 08 22 38 42.8 100.4 -3.2 -57.8 24 58 04 44 32 04 54 32 --- 08 32 40 44.8 102.1 -3.1 -57.3 600 77 04 44 33 04 54 47 TARGET 08 32 55 44.9 102.2 -3.1 -57.3 9 77 04 54 47 05 04 47 --- 08 42 56 46.9 104.1 -2.9 -56.6 600 96 04 54 48 05 04 47 TARGET 08 42 56 46.9 104.1 -2.9 -56.6 -6 96 05 04 53 05 07 47 --- 08 45 57 47.5 104.7 -2.9 -56.4 174 102 05 04 48 05 07 47 TARGET 08 45 57 47.5 104.7 -2.9 -56.4 -6 102 05 07 53 05 08 47 --- 08 46 57 47.7 104.9 -2.8 -56.3 54 104 05 07 48 05 09 07 PHASING-SRC 08 47 17 49.5 95.4 -3.0 -62.8 0 104 05 09 07 05 10 07 --- 08 48 17 49.7 95.6 -2.9 -62.8 60 106 05 09 08 05 10 33 PHASE-REF 08 48 43 48.0 100.4 -2.9 -59.2 13 106 05 10 33 05 12 03 --- 08 50 13 48.3 100.6 -2.9 -59.1 90 109 05 10 34 Schedule for VLA27 (Code Y ) Page 3 Probing pulsar emission with picoarcsecond precision - B1133+16 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 4 Mar 2017 Day 63 --- 05 12 47 TARGET 08 50 58 48.5 105.7 -2.8 -56.0 30 109 05 12 47 05 22 47 --- 09 00 59 50.5 107.8 -2.6 -55.0 600 128 05 12 48 05 23 02 TARGET 09 01 14 50.6 107.8 -2.6 -55.0 9 128 05 23 02 05 33 02 --- 09 11 16 52.5 110.1 -2.4 -53.9 600 147 05 23 03 05 33 02 TARGET 09 11 16 52.5 110.1 -2.4 -53.9 -6 147 05 33 08 05 37 02 --- 09 15 17 53.3 111.0 -2.4 -53.4 234 155 05 33 03 05 37 24 PHASING-SRC 09 15 39 55.3 100.5 -2.5 -61.5 0 155 05 37 24 05 38 24 --- 09 16 39 55.5 100.7 -2.5 -61.4 60 157 05 37 25 05 38 47 PHASE-REF 09 17 02 53.7 106.0 -2.5 -57.1 9 157 05 38 47 05 40 17 --- 09 18 32 54.0 106.3 -2.4 -56.9 90 160 05 38 48 05 41 00 TARGET 09 19 15 54.1 112.0 -2.3 -52.9 28 160 05 41 00 05 51 00 --- 09 29 17 56.0 114.6 -2.1 -51.5 600 179 05 41 01 05 51 15 TARGET 09 29 32 56.0 114.7 -2.1 -51.5 9 179 05 51 15 06 01 15 --- 09 39 33 57.9 117.5 -2.0 -49.8 600 198 05 51 16 06 01 39 PHASING-SRC 09 39 58 60.2 105.7 -2.1 -59.3 0 198 06 01 39 06 02 39 --- 09 40 58 60.4 105.9 -2.1 -59.2 60 200 06 01 40 06 03 00 PHASE-REF 09 41 19 58.5 111.8 -2.1 -54.2 6 200 06 03 00 06 04 30 --- 09 42 49 58.8 112.2 -2.0 -53.9 90 203 06 03 01 06 05 32 BP-CAL 09 43 51 66.4 102.9 -1.7 -64.0 33 203 06 05 32 06 10 32 --- 09 48 52 67.4 104.2 -1.6 -63.4 300 213 06 05 33 06 11 32 TARGET 09 49 52 59.8 120.6 -1.8 -47.8 29 213 06 11 32 06 21 32 --- 09 59 54 61.5 124.0 -1.6 -45.5 600 232 06 11 33 06 21 47 TARGET 10 00 09 61.5 124.1 -1.6 -45.5 9 232 06 21 47 06 30 00 --- 10 08 23 62.9 127.1 -1.5 -43.3 493 248 06 21 48 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess117.P256glob --- 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: 2 Station: VLA27 Total bit rate: 256 Format: VDIF Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 DBE type: WIDAR Speedup factor: 1.00 Disk used to record data. 1st LO= -227.40 -227.40 -227.40 -227.40 -227.40 -227.40 -227.40 -227.40 Net SB= U U U U U U U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = A C B D A C B D The following frequency sets based on these setups were used. Frequency Set: 6 Setup file default. Used with PCAL = off LO sum= 312.25 312.25 320.25 320.25 328.25 328.25 336.25 336.25 BBC fr= 539.65 539.65 547.65 547.65 555.65 555.65 563.65 563.65 Bandwd= 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 Matching frequency sets: 6 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) * PHASING-SRC 11 40 49.199995 * 11 43 25.089300 11 44 19.206235 0.00 22 23 34.99964 * 22 06 56.06900 22 01 06.11077 0.00 From catalog imbedded in main SCHED input file. * TARGET 11 33 27.385477 * 11 36 03.248000 11 36 57.400059 0.00 16 07 40.41945 * 15 51 04.48000 15 45 15.60041 0.00 From catalog imbedded in main SCHED input file. * PHASE-REF 11 40 50.548663 * 11 43 26.069600 11 44 20.079975 0.00 18 51 17.31759 * 18 34 38.36200 18 28 48.51279 0.00 From catalog imbedded in main SCHED input file. * BP-CAL 11 23 14.869280 * 11 25 53.711900 11 26 48.836222 0.00 26 26 49.99090 * 26 10 19.97850 26 04 32.79778 0.00 From catalog imbedded in main SCHED input file. 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 PHASING-SRCsess117.P256glob 6 0.083 0.000 TARGET sess117.P256glob 1 2 3 4 5 6 1.987 25.637 PHASE-REF sess117.P256glob 1 2 3 4 5 6 0.150 2.053 BP-CAL sess117.P256glob 1 2 3 4 5 6 0.167 2.314 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) PHASING-SRC 161.1 TARGET 167.0 PHASE-REF 163.8 BP-CAL 159.3 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