COVER INFORMATION Station: SHANGHAI (Code Sh ) Experiment: Phase-referencing of NGC4418 Exp. Code: EV019A Schedule Version: 1.00 Processed by SCHED version: 11.00 Release of Feb. 15, 2013 PI: Eskil Varenius Address: Chalmers University of Technology Onsala Space Observatory 34992 Onsala Sweden Phone: +46 31 7725545 EMAIL: varenius@chalmers.se Fax: N/A Phone during observation: +46 70 6755341 Observing mode: Phase-referencing of NGC4418 at 18cm (1 Gb/s) Notes: Part of EV019; See also exp. EV019B at C-band. Schedule for SHANGHAI (Code Sh ) Page 2 Phase-referencing of NGC4418 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 24 Feb 2014 Day 55 --- 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: 689.51 689.51 689.51 689.51 657.51 657.51 657.51 657.51 625.51 625.51 625.51 625.51 593.51 593.51 593.51 593.51 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 20 30 00 J1232 14 53 20 42.6 231.4 2.3 42.1 0 0 20 30 00 20 32 00 --- 14 55 21 42.3 231.9 2.4 42.4 120 15 20 30 01 20 32 29 NGC4418 14 55 50 42.4 234.7 2.5 44.3 23 15 20 32 29 20 40 29 --- 15 03 51 41.0 236.6 2.6 45.6 480 77 20 32 30 20 40 59 J1232 15 04 21 40.7 234.1 2.5 44.0 23 77 20 40 59 20 42 59 --- 15 06 21 40.4 234.6 2.6 44.3 120 92 20 41 00 20 43 28 NGC4418 15 06 50 40.5 237.3 2.7 46.1 23 92 20 43 28 20 51 28 --- 15 14 52 39.0 239.1 2.8 47.3 480 154 20 43 29 20 51 57 J1232 15 15 21 38.8 236.6 2.7 45.7 23 154 20 51 57 20 53 57 --- 15 17 21 38.4 237.1 2.7 46.0 120 169 20 51 58 20 54 26 NGC4418 15 17 51 38.5 239.7 2.8 47.7 23 169 20 54 26 21 02 26 --- 15 25 52 37.0 241.4 3.0 48.8 480 231 20 54 27 21 02 56 J1232 15 26 21 36.8 239.0 2.9 47.3 23 231 21 02 56 21 04 56 --- 15 28 22 36.4 239.4 2.9 47.6 120 246 21 02 57 21 05 25 NGC4418 15 28 51 36.4 242.0 3.0 49.1 23 246 21 05 25 21 13 25 --- 15 36 52 34.9 243.6 3.2 50.1 480 308 21 05 26 21 13 54 J1232 15 37 22 34.8 241.3 3.1 48.7 23 308 21 13 54 21 15 54 --- 15 39 22 34.4 241.7 3.1 49.0 120 323 21 13 55 21 16 23 NGC4418 15 39 51 34.3 244.2 3.2 50.4 23 323 21 16 23 21 24 23 --- 15 47 53 32.8 245.7 3.3 51.3 480 385 21 16 24 21 24 53 J1232 15 48 22 32.7 243.4 3.3 50.1 23 385 21 24 53 21 26 53 --- 15 50 22 32.3 243.8 3.3 50.3 120 400 21 24 54 21 27 22 NGC4418 15 50 52 32.2 246.3 3.4 51.6 23 400 21 27 22 21 35 22 --- 15 58 53 30.6 247.7 3.5 52.4 480 462 21 27 23 21 35 51 J1232 15 59 22 30.6 245.5 3.4 51.2 23 462 21 35 51 21 37 51 --- 16 01 23 30.2 245.9 3.5 51.5 120 477 21 35 52 Schedule for SHANGHAI (Code Sh ) Page 3 Phase-referencing of NGC4418 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 24 Feb 2014 Day 55 --- 21 38 20 NGC4418 16 01 52 30.0 248.2 3.6 52.7 23 477 21 38 20 21 46 20 --- 16 09 53 28.4 249.6 3.7 53.4 480 538 21 38 21 21 46 50 J1232 16 10 23 28.4 247.4 3.6 52.3 23 538 21 46 50 21 48 50 --- 16 12 23 28.0 247.8 3.7 52.5 120 554 21 46 51 21 49 19 NGC4418 16 12 52 27.8 250.1 3.8 53.6 23 554 21 49 19 21 57 19 --- 16 20 54 26.2 251.4 3.9 54.3 480 615 21 49 20 21 57 48 J1232 16 21 23 26.2 249.3 3.8 53.3 23 615 21 57 48 21 59 48 --- 16 23 23 25.8 249.6 3.8 53.5 120 631 21 57 49 22 00 17 NGC4418 16 23 53 25.6 251.9 3.9 54.5 23 631 22 00 17 22 08 17 --- 16 31 54 23.9 253.2 4.1 55.1 480 692 22 00 18 22 08 47 J1232 16 32 23 24.0 251.1 4.0 54.2 23 692 22 08 47 22 10 47 --- 16 34 24 23.6 251.4 4.0 54.3 120 708 22 08 48 22 11 16 NGC4418 16 34 53 23.3 253.7 4.1 55.3 23 708 22 11 16 22 19 16 --- 16 42 54 21.7 254.9 4.3 55.8 480 769 22 11 17 22 20 27 J1256 16 44 06 24.4 246.1 3.8 51.9 59 769 22 20 27 22 24 27 --- 16 48 07 23.7 246.8 3.9 52.3 240 800 22 20 28 22 25 26 J1232 16 49 05 20.6 253.7 4.3 55.4 48 800 22 25 26 22 27 26 --- 16 51 06 20.2 254.0 4.3 55.5 120 815 22 25 27 22 27 55 NGC4418 16 51 35 19.9 256.2 4.4 56.3 23 815 22 27 55 22 35 55 --- 16 59 36 18.2 257.4 4.5 56.7 480 877 22 27 56 22 36 25 J1232 17 00 06 18.3 255.4 4.5 56.0 23 877 22 36 25 22 38 25 --- 17 02 06 17.9 255.6 4.5 56.1 120 892 22 36 26 22 38 54 NGC4418 17 02 35 17.6 257.8 4.6 56.8 23 892 22 38 54 22 46 54 --- 17 10 37 15.9 258.9 4.7 57.2 480 954 22 38 55 22 47 23 J1232 17 11 06 16.0 256.9 4.6 56.6 23 954 22 47 23 22 49 23 --- 17 13 06 15.6 257.2 4.7 56.7 120 969 22 47 24 22 49 52 NGC4418 17 13 36 15.3 259.3 4.8 57.3 23 969 22 49 52 22 57 52 --- 17 21 37 13.6 260.5 4.9 57.6 480 1031 22 49 53 22 59 03 J1256 17 22 48 16.7 252.2 4.4 55.0 58 1031 22 59 03 23 03 03 --- 17 26 48 15.9 252.8 4.5 55.3 240 1062 22 59 04 Schedule for SHANGHAI (Code Sh ) Page 4 Phase-referencing of NGC4418 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 24 Feb 2014 Day 55 --- 23 04 00 J1232 17 27 46 12.5 259.3 4.9 57.4 47 1062 23 04 00 23 06 00 --- 17 29 46 12.1 259.6 5.0 57.4 120 1077 23 04 01 23 06 29 NGC4418 17 30 15 11.7 261.6 5.0 57.9 23 1077 23 06 29 23 14 29 --- 17 38 17 10.0 262.7 5.2 58.2 480 1138 23 06 30 23 14 58 J1232 17 38 46 10.2 260.8 5.1 57.8 23 1138 23 14 58 23 16 58 --- 17 40 46 9.8 261.1 5.1 57.9 120 1154 23 14 59 23 17 28 NGC4418 17 41 16 9.4 263.1 5.2 58.2 23 1154 23 17 28 23 25 28 --- 17 49 17 7.7 264.2 5.4 58.4 480 1215 23 17 29 23 25 57 J1232 17 49 46 7.9 262.3 5.3 58.1 23 1215 23 25 57 23 27 57 --- 17 51 47 7.5 262.5 5.3 58.2 120 1231 23 25 58 23 28 26 NGC4418 17 52 16 7.1 264.6 5.4 58.5 23 1231 23 28 26 23 36 26 --- 18 00 17 5.4 265.6 5.5 58.6 480 1292 23 28 27 23 37 35 J1256 18 01 26 8.7 257.7 5.1 57.2 56 1292 23 37 35 23 41 35 --- 18 05 26 7.9 258.2 5.1 57.4 240 1323 23 37 36 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess114.L1024 Matching groups in /opt/sched/sched_11.0/catalogs/freq.dat: sh18cm Huang Xinyong 27Sept05 ****** Only 244.98 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 8 Station: SHANGHAI Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 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 = C A C A C A C A C A C A C A C A The following frequency sets based on these setups were used. Frequency Set: 10 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= 689.51 689.51 689.51 689.51 657.51 657.51 657.51 657.51 625.51 625.51 625.51 625.51 593.51 593.51 593.51 593.51 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: 10 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, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * NGC4418 12 24 20.753136 * 12 26 54.612600 12 27 39.873319 0.00 -00 36 03.52524 *-00 52 39.37200 -00 57 31.42499 0.00 From catalog imbedded in main SCHED input file. * J1232 12 29 25.899380 * 12 32 00.015985 12 32 45.353459 0.00 -02 07 31.66618 *-02 24 04.79425 -02 28 55.54677 0.00 From catalog imbedded in main SCHED input file. * J1256 12 53 35.831298 * 12 56 11.166566 12 56 56.816922 0.00 -05 31 07.99587 *-05 47 21.52473 -05 52 04.79554 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 NGC4418 sess114.L1024 1 2 3 4 5 6 9 10 11 12 13 6.800 356.933 J1232 sess114.L1024 1 2 3 4 5 6 9 10 11 12 13 1.733 89.333 J1256 sess114.L1024 1 2 3 4 5 6 9 10 11 12 13 0.467 27.133 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) NGC4418 149.6 J1232 147.9 J1256 141.0 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