COVER INFORMATION Station: ARECIBO (Code Ar ) Experiment: pc-scale structure in Her A C-band Exp. Code: EG072A 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 6cm (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 C-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 29 May 2013 Day 149 --- Next scan frequencies: 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 Next BBC frequencies: 807.51 807.51 807.51 807.51 775.51 775.51 775.51 775.51 743.51 743.51 743.51 743.51 711.51 711.51 711.51 711.51 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 53 58 J1649+0626 15 54 19 71.8 129.3 -0.9 -47.7 0 0 03 53 58 03 55 28 =1647+065 15 55 50 72.1 130.1 -0.9 -47.0 90 12 03 53 59 03 55 28 HERCULESA 15 55 50 70.9 132.6 -0.9 -44.5 -36 12 No stop 03 58 58 --- 15 59 20 71.5 134.6 -0.9 -42.7 174 38 03 55 29 03 59 38 J1649+0626 16 00 00 72.9 132.5 -0.8 -44.8 -2 38 03 59 38 04 01 08 =1647+065 16 01 30 73.1 133.4 -0.8 -44.0 88 50 03 59 39 04 01 08 HERCULESA 16 01 30 71.8 135.9 -0.8 -41.6 -37 50 No stop 04 04 38 --- 16 05 01 72.4 138.0 -0.8 -39.6 173 77 04 01 09 04 04 38 J1649+0626 16 05 01 73.7 135.6 -0.8 -41.9 -42 77 No stop 04 06 08 =1647+065 16 06 31 74.0 136.6 -0.7 -41.0 48 88 04 04 39 04 06 08 HERCULESA 16 06 31 72.6 139.0 -0.8 -38.7 -38 88 No stop 04 09 38 --- 16 10 02 73.2 141.4 -0.7 -36.5 172 115 04 06 09 04 10 18 J1649+0626 16 10 42 74.6 139.6 -0.7 -38.3 -3 115 04 10 18 04 11 48 =1647+065 16 12 12 74.9 140.7 -0.6 -37.2 87 127 04 10 19 04 14 42 J1640+1220 16 15 07 81.2 132.6 -0.4 -45.6 14 127 04 14 42 04 18 27 =1638+124 16 19 08 81.9 137.5 -0.4 -41.0 225 156 04 14 43 04 21 10 J1649+0626 16 21 36 76.2 148.5 -0.5 -30.0 15 156 04 21 10 04 23 55 =1647+065 16 24 37 76.5 151.3 -0.4 -27.3 165 177 04 21 11 04 23 55 HERCULESA 16 24 21 75.0 152.5 -0.5 -26.1 -42 177 No stop 04 27 25 --- 16 27 52 75.4 155.6 -0.4 -23.1 168 204 04 23 56 04 28 10 J1649+0626 16 28 37 76.9 155.2 -0.4 -23.6 0 204 04 28 10 04 29 40 =1647+065 16 30 07 77.1 156.7 -0.3 -22.2 90 215 04 28 11 04 29 40 HERCULESA 16 30 07 75.6 157.7 -0.4 -21.2 -43 215 No stop 04 33 10 --- 16 33 38 75.9 161.1 -0.3 -18.0 167 242 04 29 41 04 33 10 J1649+0626 16 33 38 77.4 160.4 -0.3 -18.7 -45 242 No stop 04 34 40 =1647+065 16 35 08 77.5 162.0 -0.3 -17.1 45 253 04 33 11 Schedule for ARECIBO (Code Ar ) Page 3 pc-scale structure in Her A C-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 29 May 2013 Day 149 --- 04 34 40 HERCULESA 16 35 08 76.0 162.5 -0.3 -16.6 -43 253 No stop 04 38 10 --- 16 38 39 76.2 166.1 -0.2 -13.3 167 280 04 34 41 04 38 55 J1649+0626 16 39 24 77.8 166.8 -0.2 -12.6 0 280 04 38 55 04 40 25 =1647+065 16 40 54 77.9 168.6 -0.2 -10.9 90 292 04 38 56 04 40 25 HERCULESA 16 40 54 76.4 168.4 -0.2 -11.1 -44 292 No stop 04 43 55 --- 16 44 25 76.5 172.1 -0.1 -7.6 166 319 04 40 26 04 43 55 J1649+0626 16 44 25 78.0 172.7 -0.1 -7.0 -45 319 No stop 04 45 25 =1647+065 16 45 55 78.0 174.5 -0.1 -5.3 45 330 04 43 56 04 45 25 HERCULESA 16 45 55 76.5 173.7 -0.1 -6.0 -44 330 No stop 04 48 55 --- 16 49 26 76.6 177.4 -0.0 -2.5 166 357 04 45 26 04 49 40 J1649+0626 16 50 11 78.1 179.6 -0.0 -0.4 1 357 04 49 40 04 51 10 =1647+065 16 51 41 78.1 181.4 0.0 1.3 90 369 04 49 41 04 51 10 HERCULESA 16 51 41 76.6 179.8 -0.0 -0.2 -44 369 No stop 04 54 40 --- 16 55 12 76.6 183.6 0.1 3.4 166 396 04 51 11 04 54 40 J1649+0626 16 55 12 78.0 185.6 0.1 5.3 -43 396 No stop 04 56 10 =1647+065 16 56 42 78.0 187.4 0.1 7.0 47 407 04 54 41 04 56 10 HERCULESA 16 56 42 76.6 185.2 0.1 5.0 -43 407 No stop 04 59 40 --- 17 00 12 76.5 189.0 0.1 8.5 167 434 04 56 11 05 00 25 J1649+0626 17 00 57 77.8 192.4 0.2 11.8 4 434 05 00 25 05 01 55 =1647+065 17 02 28 77.7 194.1 0.2 13.4 90 445 05 00 26 05 01 55 HERCULESA 17 02 28 76.4 191.3 0.2 10.8 -42 445 No stop 05 05 25 --- 17 05 58 76.2 194.9 0.2 14.2 168 472 05 01 56 05 05 25 J1649+0626 17 05 58 77.5 198.0 0.3 17.2 -39 472 No stop 05 06 55 =1647+065 17 07 29 77.4 199.6 0.3 18.7 51 484 05 05 26 05 06 55 HERCULESA 17 07 29 76.1 196.4 0.3 15.6 -41 484 No stop 05 10 25 --- 17 10 59 75.8 199.9 0.3 18.9 169 511 05 06 56 05 11 10 J1649+0626 17 11 44 77.0 204.1 0.4 23.0 7 511 05 11 10 05 12 40 =1647+065 17 13 14 76.9 205.6 0.4 24.4 90 522 05 11 11 05 12 40 HERCULESA 17 13 14 75.6 202.0 0.4 20.9 -39 522 No stop 05 16 10 --- 17 16 45 75.3 205.2 0.4 24.0 171 549 05 12 41 Schedule for ARECIBO (Code Ar ) Page 4 pc-scale structure in Her A C-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 29 May 2013 Day 149 --- 05 16 10 J1649+0626 17 16 45 76.5 209.0 0.4 27.6 -35 549 No stop 05 17 40 =1647+065 17 18 15 76.3 210.4 0.5 28.9 55 561 05 16 11 05 17 40 HERCULESA 17 18 15 75.2 206.6 0.4 25.2 -37 561 No stop 05 21 10 --- 17 21 46 74.8 209.6 0.5 28.1 173 588 05 17 41 05 21 55 J1649+0626 17 22 31 75.8 214.2 0.5 32.5 11 588 05 21 55 05 23 25 =1647+065 17 24 01 75.6 215.5 0.6 33.6 90 599 05 21 56 05 23 25 HERCULESA 17 24 01 74.5 211.4 0.5 29.8 -36 599 No stop 05 26 55 --- 17 27 32 74.0 214.2 0.6 32.4 174 626 05 23 26 05 26 55 J1649+0626 17 27 32 75.1 218.3 0.6 36.3 -32 626 No stop 05 28 25 =1647+065 17 29 02 74.8 219.4 0.6 37.3 58 637 05 26 56 05 28 25 HERCULESA 17 29 02 73.8 215.3 0.6 33.4 -34 637 No stop 05 31 55 --- 17 32 33 73.3 217.9 0.7 35.8 176 664 05 28 26 05 32 35 J1649+0626 17 33 13 74.2 222.5 0.7 40.1 10 664 05 32 35 05 34 05 =1647+065 17 34 43 73.9 223.5 0.7 41.1 90 676 05 32 36 05 34 05 HERCULESA 17 34 43 73.0 219.4 0.7 37.2 -32 676 No stop 05 37 35 --- 17 38 14 72.5 221.7 0.8 39.3 178 703 05 34 06 05 38 15 J1649+0626 17 38 54 73.2 226.2 0.8 43.6 12 703 05 38 15 05 39 45 =1647+065 17 40 24 73.0 227.1 0.8 44.4 90 714 05 38 16 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess213.C1024 Matching groups in /home/users/dreg/antxon/sched_11.0/catalogs/freq.dat: arcb4 Using up-down conversion unit + VLBIinp at 1.5 MHz Setup group: 12 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= 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 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: 15 Setup file default. Used pcal sets: 1 LO sum= 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 BBC fr= 807.51 807.51 807.51 807.51 775.51 775.51 775.51 775.51 743.51 743.51 743.51 743.51 711.51 711.51 711.51 711.51 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: 15 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S9 S11 S13 S15 PCALXB2= S2 S4 S6 S8 S10 S12 S14 S16 PCALFR1= 490 510 490 510 490 510 490 510 PCALFR2= 490 510 490 510 490 510 490 510 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 49.887435 0.00 05 04 35.31006 * 04 59 33.59240 04 58 16.35205 0.00 From catalog imbedded in main SCHED input file. * J1640+1220 16 38 27.927669 * 16 40 47.938844 16 41 27.470504 0.22 1638+124 12 25 46.27264 * 12 20 02.07874 12 18 33.08667 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 31.801814 0.99 1647+065 06 32 00.49700 * 06 26 53.44904 06 25 34.70208 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 46.488347 0.18 1648+015 01 34 25.63264 * 01 29 23.45844 01 28 06.22263 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.C1024 1 2 3 4 5 6 7 8 9 12 13 14 + 7.700 440.309 J1640+1220 sess213.C1024 1 2 3 4 5 6 7 8 9 15 0.063 2.813 J1649+0626 sess213.C1024 1 2 3 4 5 6 7 8 9 12 13 14 + 3.442 183.218 J1651+0129 sess213.C1024 1 2 3 4 5 6 7 8 9 12 13 14 0.063 5.688 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 152.6 J1640+1220 145.8 J1649+0626 151.2 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