COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: TwoDimensional time Delay Measurement of Intra-Day Variable Sources. Exp. Code: bc162 Schedule Version: 2.00 Processed by SCHED version: 6.05 June 2006 PI: Giuseppe Cimo Address: Joint Institute for VLBI in Europe Postbus 2 7990 AA Dwingeloo - The Netherlands Phone: +31-(0)521 596545 EMAIL: cimo@jive.nl Fax: +31-(0)521 596539 Phone during observation: Observing mode: 256-8-2 3.6 and 6cm Notes: Schedule for VLBA_HN (Code Hn ) Page 2 TwoDimensional time Delay Measurement of Intra-Day Variable Sources. UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Fri 23 Feb 2007 Day 54 --- Next scan frequencies: 8405.49 8405.49 8413.49 8413.49 8421.49 8421.49 8429.49 8429.49 Next BBC frequencies: 805.49 805.49 813.49 813.49 821.49 821.49 829.49 829.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 11 00 00 J1800+3848 16 23 53 71.3 94.6 -1.6 -69.5 0 1 1 0 11 00 00 11 05 00 =1758+388 16 28 54 72.2 95.7 -1.5 -69.2 300 F 1 10 11 00 18 11 05 00 J1819+3845 16 28 54 68.7 91.9 -1.8 -69.8 -13 1 1 10 11 05 00 11 20 00 --- 16 43 57 71.5 94.9 -1.6 -69.3 887 F 1 39 11 05 00 11 20 00 J1821+3945 16 43 57 71.4 91.4 -1.6 -72.2 -8 1 1 39 11 20 00 11 25 00 =1820+397 16 48 58 72.3 92.4 -1.6 -72.1 292 F 1 48 11 20 00 11 25 00 J1819+3845 16 48 58 72.4 96.1 -1.5 -69.0 -8 1 1 48 11 25 00 11 40 00 --- 17 04 00 75.1 99.9 -1.3 -67.6 892 F 1 77 11 25 00 11 40 00 J1821+3945 17 04 00 75.0 95.6 -1.3 -71.4 -9 1 1 77 11 40 00 11 45 00 =1820+397 17 09 01 75.9 96.8 -1.2 -71.0 291 F 1 87 11 40 00 11 45 00 J1819+3845 17 09 01 76.0 101.5 -1.2 -66.9 -9 1 1 87 11 45 00 12 00 00 --- 17 24 03 78.7 107.0 -0.9 -63.8 891 F 1 116 11 45 00 12 00 00 J1821+3945 17 24 03 78.7 101.3 -1.0 -69.1 -10 1 1 116 12 00 00 12 05 00 =1820+397 17 29 04 79.5 103.2 -0.9 -68.0 290 F 1 126 12 00 00 12 05 00 J1800+3848 17 29 04 82.7 122.1 -0.5 -52.8 -19 1 1 126 12 05 00 12 10 00 =1758+388 17 34 05 83.5 127.2 -0.4 -48.4 281 F 1 135 12 05 00 12 10 00 J1819+3845 17 34 05 80.4 112.1 -0.8 -60.4 -16 1 1 135 12 10 00 12 25 00 --- 17 49 07 82.9 123.4 -0.5 -51.6 884 F 1 165 12 10 00 12 25 00 J1821+3945 17 49 07 83.0 114.3 -0.6 -60.3 -12 1 1 165 12 25 00 12 30 00 =1820+397 17 54 08 83.9 118.7 -0.5 -56.7 288 F 1 174 12 25 00 12 30 00 J1819+3845 17 54 08 83.6 128.8 -0.4 -47.0 -13 1 1 174 12 30 00 12 45 00 --- 18 09 11 85.4 153.8 -0.2 -24.5 887 F 1 203 12 30 00 12 45 00 J1821+3945 18 09 11 86.0 141.2 -0.2 -36.6 -14 1 1 203 12 45 00 12 50 00 =1820+397 18 14 11 86.5 153.9 -0.1 -24.8 286 F 1 213 12 45 00 Schedule for VLBA_HN (Code Hn ) Page 3 TwoDimensional time Delay Measurement of Intra-Day Variable Sources. UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Fri 23 Feb 2007 Day 54 --- 12 50 00 J1819+3845 18 14 11 85.7 165.7 -0.1 -13.5 -14 1 1 213 12 50 00 13 05 00 --- 18 29 14 85.4 204.2 0.2 22.6 886 F 1 242 12 50 00 13 05 00 J1821+3945 18 29 14 86.6 203.1 0.1 22.0 -8 1 1 242 13 05 00 13 10 00 =1820+397 18 34 15 86.1 216.5 0.2 34.5 292 F 1 252 13 05 00 13 10 00 J1819+3845 18 34 15 85.0 214.6 0.2 32.2 -8 1 1 252 13 10 00 13 25 00 --- 18 49 17 83.0 235.7 0.5 50.8 892 F 1 281 13 10 00 13 25 00 J1821+3945 18 49 17 84.0 240.3 0.5 55.8 -9 1 1 281 13 25 00 13 30 00 =1820+397 18 54 18 83.2 244.9 0.5 59.6 291 F 1 290 13 25 00 13 30 00 J1819+3845 18 54 18 82.2 240.3 0.6 54.6 -9 1 1 290 13 30 00 13 45 00 --- 19 09 21 79.7 250.1 0.8 62.0 891 F 1 319 13 30 00 13 45 00 J1821+3945 19 09 21 80.6 254.2 0.8 66.4 -9 1 1 319 13 45 00 13 50 00 =1820+397 19 14 21 79.7 256.4 0.9 67.8 291 F 1 329 13 45 00 13 50 00 J1819+3845 19 14 21 78.9 252.5 0.9 63.6 -9 1 1 329 13 50 00 14 05 00 --- 19 29 24 76.2 258.2 1.2 66.8 891 F 1 358 13 50 00 14 05 00 J1821+3945 19 29 24 77.0 261.6 1.1 70.4 -8 1 1 358 14 05 00 14 10 00 =1820+397 19 34 25 76.1 262.9 1.2 70.9 292 F 1 368 14 05 00 14 10 00 J1800+3848 19 34 25 71.9 264.8 1.6 69.3 -15 1 1 368 14 10 00 14 15 00 =1758+388 19 39 25 70.9 265.9 1.6 69.6 285 F 1 377 14 10 00 14 15 00 J1819+3845 19 39 25 74.4 261.2 1.3 68.1 -13 1 1 377 14 15 00 14 30 00 --- 19 54 28 71.7 264.9 1.6 69.2 887 F 1 406 14 15 00 14 30 00 J1821+3945 19 54 28 72.5 267.4 1.5 72.1 -8 1 1 406 14 30 00 14 35 00 =1820+397 19 59 29 71.5 268.4 1.6 72.2 292 F 1 416 14 30 00 14 35 00 J1819+3845 19 59 29 70.7 265.9 1.7 69.5 -8 1 1 416 14 35 00 14 45 00 --- 20 09 30 68.9 267.9 1.8 69.7 592 F 1 435 14 35 00 14 45 00 J1821+3945 20 09 30 69.7 270.2 1.8 72.3 -8 1 1 435 14 45 00 14 50 00 =1820+397 20 14 31 68.8 271.0 1.9 72.2 292 F 1 445 14 45 00 14 50 00 J1819+3845 20 14 31 68.0 268.8 1.9 69.8 -8 1 1 445 14 50 00 15 00 00 --- 20 24 33 66.2 270.6 2.1 69.8 592 F 1 464 14 50 00 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/arana/cwalker/sched/setups/v4cm-256-8-2.set Matches group v4cm_3 in /home/arana/cwalker/sched/catalogs/freq.dat Setup group: 3 Station: VLBA_HN Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Speedup factor: 1.00 Disk used to record data. 1st LO= 7600.00 7600.00 7600.00 7600.00 7600.00 7600.00 7600.00 7600.00 Net 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 = B D B D B D B D VLBA FE= omit 4cm omit 4cm VLBA Synth= 7.6 15.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 3 Setup file default. Used pcal sets: 1 LO sum= 8405.49 8405.49 8413.49 8413.49 8421.49 8421.49 8429.49 8429.49 BBC fr= 805.49 805.49 813.49 813.49 821.49 821.49 829.49 829.49 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off SOURCE LIST -- TwoDimensional time Delay Measurement of Intra-Day Variable Sources. Catalog positions marked with *. Precession of date coordinates is based on stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900 No adjustments are made for rates (DRA, DDEC). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * J1800+3848 17 58 44.703953 * 18 00 24.765362 18 00 38.459229 0.26 1758+388 38 48 32.47356 * 38 48 30.69754 38 48 05.41887 0.40 J1800+38 /home/arana/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.250 scan hours, 12.213 baseline hours above horizon. * J1819+3845 18 17 46.175701 * 18 19 26.547379 18 19 40.127037 0.31 38 43 40.47037 * 38 45 01.78615 38 44 49.10023 0.51 /home/arana/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 2.833 scan hours, 145.283 baseline hours above horizon. * J1821+3945 18 20 21.240613 * 18 21 59.700620 18 22 12.967190 2.05 1820+397 39 44 27.15459 * 39 45 59.65691 39 45 48.52510 2.21 J1821+39 /home/arana/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.917 scan hours, 45.484 baseline hours above horizon. 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) J1800+3848 78.3 J1819+3845 74.9 J1821+3945 75.0 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