COVER INFORMATION Station: ARECIBO (Code Ar ) Experiment: pc-scale structure in Her A L-band Exp. Code: EG072B Schedule Version: 1.00 Processed by SCHED version: 11.00 Release of Feb. 15, 2013 PI: Nectaria Gizani Address: Hellenic Open University School of Science and Astronomy Tsamadou 13-15 & Ag. Andreou 26222 Patra Greece Phone: +00306972709435 EMAIL: ngizani@eap.gr Fax: Phone during observation: +00306972709435 Observing mode: Phase-referencing of Hercules A at 18cm (1024 Mb/s) Notes: Reference source: J1649+0626, at a radial distance of 1.49 deg Full EVN + Arecibo Schedule for ARECIBO (Code Ar ) Page 2 pc-scale structure in Her A L-band 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 ---------------------------------------------------------------------------------------- --- Wed 5 Jun 2013 Day 156 --- 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: 789.51 789.51 789.51 789.51 757.51 757.51 757.51 757.51 725.51 725.51 725.51 725.51 693.51 693.51 693.51 693.51 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 03 23 57 J1649+0626 15 51 50 71.4 127.9 -1.0 -48.9 0 0 03 23 57 03 25 27 =1647+065 15 53 20 71.7 128.7 -1.0 -48.2 90 12 03 23 58 03 25 27 HERCULESA 15 53 20 70.4 131.3 -1.0 -45.7 -36 12 No stop 03 28 57 --- 15 56 51 71.1 133.2 -0.9 -44.0 174 38 03 25 28 03 29 37 J1649+0626 15 57 31 72.4 131.0 -0.9 -46.1 -1 38 03 29 37 03 31 07 =1647+065 15 59 01 72.7 131.9 -0.9 -45.3 89 50 03 29 38 03 31 07 HERCULESA 15 59 01 71.4 134.4 -0.9 -42.9 -37 50 No stop 03 34 37 --- 16 02 32 72.0 136.5 -0.8 -41.0 173 77 03 31 08 03 34 37 J1649+0626 16 02 32 73.3 134.0 -0.8 -43.4 -42 77 No stop 03 36 07 =1647+065 16 04 02 73.6 135.0 -0.8 -42.5 48 88 03 34 38 03 36 07 HERCULESA 16 04 02 72.3 137.4 -0.8 -40.1 -38 88 No stop 03 39 37 --- 16 07 33 72.8 139.7 -0.7 -38.1 172 115 03 36 08 03 40 17 J1649+0626 16 08 13 74.2 137.8 -0.7 -39.9 -3 115 03 40 17 03 41 47 =1647+065 16 09 43 74.5 138.9 -0.7 -38.9 87 127 03 40 18 03 44 40 J1640+1220 16 12 36 80.8 129.9 -0.5 -48.2 14 127 03 44 40 03 48 25 =1638+124 16 16 37 81.5 134.4 -0.4 -44.0 225 156 03 44 41 03 51 06 J1649+0626 16 19 03 75.8 146.2 -0.5 -32.1 15 156 03 51 06 03 53 51 =1647+065 16 22 04 76.2 148.9 -0.5 -29.6 165 177 03 51 07 03 53 51 HERCULESA 16 21 48 74.7 150.3 -0.5 -28.1 -42 177 No stop 03 57 21 --- 16 25 19 75.1 153.4 -0.4 -25.3 168 204 03 53 52 03 58 06 J1649+0626 16 26 04 76.7 152.7 -0.4 -26.0 0 204 03 58 06 03 59 36 =1647+065 16 27 34 76.8 154.1 -0.4 -24.6 90 215 03 58 07 03 59 36 HERCULESA 16 27 34 75.4 155.4 -0.4 -23.4 -42 215 No stop 04 03 06 --- 16 31 05 75.7 158.6 -0.3 -20.3 168 242 03 59 37 04 03 06 J1649+0626 16 31 05 77.2 157.7 -0.3 -21.2 -45 242 No stop 04 04 36 =1647+065 16 32 35 77.3 159.3 -0.3 -19.7 45 253 04 03 07 Schedule for ARECIBO (Code Ar ) Page 3 pc-scale structure in Her A L-band 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 ---------------------------------------------------------------------------------------- --- Wed 5 Jun 2013 Day 156 --- 04 04 36 HERCULESA 16 32 35 75.8 160.0 -0.3 -19.0 -43 253 No stop 04 08 06 --- 16 36 06 76.1 163.5 -0.3 -15.7 167 280 04 04 37 04 08 51 J1649+0626 16 36 51 77.6 163.9 -0.2 -15.3 0 280 04 08 51 04 10 21 =1647+065 16 38 21 77.7 165.6 -0.2 -13.7 90 292 04 08 52 04 10 21 HERCULESA 16 38 21 76.2 165.8 -0.2 -13.6 -44 292 No stop 04 13 51 --- 16 41 52 76.4 169.4 -0.2 -10.1 166 319 04 10 22 04 13 51 J1649+0626 16 41 52 77.9 169.7 -0.1 -9.9 -45 319 No stop 04 15 21 =1647+065 16 43 22 78.0 171.4 -0.1 -8.2 45 330 04 13 52 04 15 21 HERCULESA 16 43 22 76.5 171.0 -0.1 -8.6 -44 330 No stop 04 18 51 --- 16 46 53 76.6 174.7 -0.1 -5.1 166 357 04 15 22 04 19 36 J1649+0626 16 47 38 78.1 176.5 -0.0 -3.3 1 357 04 19 36 04 21 06 =1647+065 16 49 08 78.1 178.3 -0.0 -1.6 90 369 04 19 37 04 21 06 HERCULESA 16 49 08 76.6 177.1 -0.0 -2.8 -44 369 No stop 04 24 36 --- 16 52 39 76.6 180.9 0.0 0.8 166 396 04 21 07 04 24 36 J1649+0626 16 52 39 78.1 182.5 0.0 2.4 -43 396 No stop 04 26 06 =1647+065 16 54 09 78.0 184.3 0.1 4.1 47 407 04 24 37 04 26 06 HERCULESA 16 54 09 76.6 182.5 0.0 2.4 -43 407 No stop 04 29 36 --- 16 57 39 76.6 186.2 0.1 6.0 167 434 04 26 07 04 30 21 J1649+0626 16 58 24 77.9 189.4 0.1 9.0 3 434 04 30 21 04 31 51 =1647+065 16 59 55 77.9 191.2 0.2 10.6 90 445 04 30 22 04 31 51 HERCULESA 16 59 55 76.5 188.6 0.1 8.2 -42 445 No stop 04 35 21 --- 17 03 25 76.3 192.3 0.2 11.7 168 472 04 31 52 04 35 21 J1649+0626 17 03 25 77.7 195.2 0.2 14.5 -40 472 No stop 04 36 51 =1647+065 17 04 56 77.6 196.9 0.2 16.1 50 484 04 35 22 04 36 51 HERCULESA 17 04 56 76.3 193.8 0.2 13.2 -41 484 No stop 04 40 21 --- 17 08 26 76.0 197.4 0.3 16.5 169 511 04 36 52 04 41 06 J1649+0626 17 09 11 77.2 201.5 0.3 20.5 7 511 04 41 06 04 42 36 =1647+065 17 10 41 77.1 203.0 0.3 22.0 90 522 04 41 07 04 42 36 HERCULESA 17 10 41 75.9 199.6 0.3 18.6 -40 522 No stop 04 46 06 --- 17 14 12 75.6 202.9 0.4 21.8 170 549 04 42 37 Schedule for ARECIBO (Code Ar ) Page 4 pc-scale structure in Her A L-band 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 ---------------------------------------------------------------------------------------- --- Wed 5 Jun 2013 Day 156 --- 04 46 06 J1649+0626 17 14 12 76.8 206.6 0.4 25.3 -36 549 No stop 04 47 36 =1647+065 17 15 42 76.6 208.0 0.4 26.7 54 561 04 46 07 04 47 36 HERCULESA 17 15 42 75.4 204.3 0.4 23.1 -38 561 No stop 04 51 06 --- 17 19 13 75.0 207.4 0.5 26.0 172 588 04 47 37 04 51 51 J1649+0626 17 19 58 76.1 212.0 0.5 30.4 10 588 04 51 51 04 53 21 =1647+065 17 21 28 75.9 213.3 0.5 31.6 90 599 04 51 52 04 53 21 HERCULESA 17 21 28 74.8 209.3 0.5 27.8 -36 599 No stop 04 56 51 --- 17 24 59 74.4 212.2 0.6 30.5 174 626 04 53 22 04 56 51 J1649+0626 17 24 59 75.4 216.2 0.6 34.4 -32 626 No stop 04 58 21 =1647+065 17 26 29 75.2 217.5 0.6 35.5 58 637 04 56 52 04 58 21 HERCULESA 17 26 29 74.2 213.4 0.6 31.6 -35 637 No stop 05 01 51 --- 17 30 00 73.7 216.0 0.6 34.1 175 664 04 58 22 05 02 31 J1649+0626 17 30 40 74.6 220.6 0.7 38.5 9 664 05 02 31 05 04 01 =1647+065 17 32 10 74.3 221.7 0.7 39.5 90 676 05 02 32 05 04 01 HERCULESA 17 32 10 73.4 217.6 0.7 35.6 -33 676 No stop 05 07 31 --- 17 35 41 72.9 220.0 0.7 37.8 177 703 05 04 02 05 08 11 J1649+0626 17 36 21 73.7 224.6 0.8 42.1 11 703 05 08 11 05 09 41 =1647+065 17 37 51 73.4 225.5 0.8 43.0 90 714 05 08 12 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess213.L1024 Matching groups in /home/users/dreg/antxon/sched_11.0/catalogs/freq.dat: arlb5c RX=LBW, with lfbf=5, upper 300 MHz CS 15-May-06 Setup group: 11 Station: ARECIBO 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= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= L L U U L L U U L L U U L L U U IF SB = L L L L L L L L L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 1 2 3 4 3 4 5 6 5 6 7 8 7 8 BBC SB= U U L L U U L L U U L L U U L L IF = A C A C A C A C A C A C A C A C The following frequency sets based on these setups were used. Frequency Set: 14 Setup file default. Used pcal sets: 1 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= 789.51 789.51 789.51 789.51 757.51 757.51 757.51 757.51 725.51 725.51 725.51 725.51 693.51 693.51 693.51 693.51 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 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 S5 S6 S7 S8 PCALXB2= M1 M2 M3 M4 M5 M6 M7 M8 PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 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) * HERCULESA 16 48 39.961010 * 16 51 08.133810 16 51 49.941368 0.00 05 04 35.31006 * 04 59 33.59240 04 58 17.40724 0.00 From catalog imbedded in main SCHED input file. * J1640+1220 16 38 27.927669 * 16 40 47.938844 16 41 27.515201 0.22 1638+124 12 25 46.27264 * 12 20 02.07874 12 18 34.39190 0.38 J1640+12 /home/users/dreg/antxon/sched_11.0/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 126 observations * J1649+0626 16 47 23.941527 * 16 49 50.491403 16 50 31.854419 0.99 1647+065 06 32 00.49700 * 06 26 53.44904 06 25 35.80929 0.87 /home/users/dreg/antxon/sched_11.0/catalogs/sources.vlba GSFC 2011B astro solution 56 Observations * J1651+0129 16 48 31.580592 * 16 51 03.662375 16 51 46.543435 0.18 1648+015 01 34 25.63264 * 01 29 23.45844 01 28 07.14586 0.37 J1651+01 /home/users/dreg/antxon/sched_11.0/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 130 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 HERCULESA sess213.L1024 1 2 3 4 5 6 7 8 11 12 14 7.700 372.381 J1640+1220 sess213.L1024 1 2 3 4 5 6 7 8 14 0.063 2.250 J1649+0626 sess213.L1024 1 2 3 4 5 6 7 8 11 12 14 3.442 155.409 J1651+0129 sess213.L1024 1 2 3 4 5 6 7 8 11 12 0.063 4.875 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) HERCULESA 152.5 J1640+1220 145.0 J1649+0626 151.0 J1651+0129 156.0 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