COVER INFORMATION Station: WSTRBORK (Code Wb ) Experiment: Snapshot Ionospheric Testing Observations Exp. Code: N05L2 Schedule Version: 1.20 Processed by SCHED version: 6.01 Release: Late March 2005 PI: James M Anderson Address: Joint Institute for VLBI in Europe Oude Hoogeveensedijk 4 7991 PD Dwingeloo The Netherlands Phone: +31 (0)521 596 542 EMAIL: anderson@jive.nl Fax: +31 (0)521 596 539 Phone during observation: +31 (0)521 596 500 Observing mode: Snapshot observations of sources at 18cm (256 Mb/s) Notes: ALBUS Ionospheric modeling test observations Fringe Finder is 3C273B, which is very strong Phase referencing is too fast for JODRELL1 All targets are strong Schedule for WSTRBORK (Code Wb ) Page 2 Snapshot Ionospheric Testing Observations 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 2 Jun 2005 Day 153 --- Next scan frequencies: 1637.99 1637.99 1645.99 1645.99 1653.99 1653.99 1661.99 1661.99 Next BBC frequencies: 127.99 127.99 135.99 135.99 143.99 143.99 151.99 151.99 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 16 00 00 3C273B 09 11 25 24.8 123.2 -3.3 0.0 0 1 1 0 16 00 00 16 05 20 --- 09 16 46 25.5 124.4 -3.2 0.0 320 F 1 0 16 08 20 J1215-1731 09 19 46 9.9 137.7 -2.9 0.0 102 1 1 0 16 08 20 16 09 20 =1213-172 09 20 47 10.0 137.9 -2.9 0.0 60 F 1 0 16 09 20 J1212-2221 09 20 47 6.0 140.7 -2.9 0.0 -29 1 1 0 16 09 20 16 11 00 =1209-220 09 22 27 6.2 141.1 -2.8 0.0 71 F 1 0 16 11 00 J1215-1731 09 22 27 10.2 138.3 -2.9 0.0 -29 1 1 0 16 11 00 16 12 40 =1213-172 09 24 07 10.4 138.6 -2.9 0.0 71 F 1 0 16 12 40 J1212-2221 09 24 07 6.3 141.5 -2.8 0.0 -29 1 1 0 16 12 40 16 14 20 =1209-220 09 25 47 6.5 141.8 -2.8 0.0 71 F 1 0 16 14 20 J1215-1731 09 25 47 10.5 139.0 -2.8 0.0 -29 1 1 0 16 14 20 16 16 00 =1213-172 09 27 28 10.7 139.4 -2.8 0.0 71 F 1 0 16 16 00 J1159-2148 09 27 28 8.2 144.6 -2.5 0.0 -27 1 1 0 16 16 00 16 18 00 =1157-215 09 29 28 8.4 145.0 -2.5 0.0 93 F 1 0 16 18 00 J1215-1731 09 29 28 10.9 139.8 -2.8 0.0 -27 1 1 0 16 18 00 16 20 00 =1213-172 09 31 28 11.1 140.3 -2.7 0.0 93 F 1 0 16 20 00 J1159-2148 09 31 28 8.6 145.5 -2.5 0.0 -27 1 1 0 16 20 00 16 22 00 =1157-215 09 33 29 8.7 145.9 -2.4 0.0 93 F 1 0 16 22 00 J1215-1731 09 33 29 11.3 140.7 -2.7 0.0 -27 1 1 0 16 22 00 16 24 00 =1213-172 09 35 29 11.5 141.2 -2.7 0.0 93 F 1 0 16 25 00 J1159-2148 09 36 29 9.0 146.5 -2.4 0.0 33 1 1 0 16 25 00 16 26 00 =1157-215 09 37 29 9.1 146.8 -2.4 0.0 60 F 1 0 16 26 00 J1212-2221 09 37 29 7.5 144.3 -2.6 0.0 -23 1 1 0 16 26 00 16 27 40 =1209-220 09 39 10 7.7 144.7 -2.6 0.0 77 F 1 0 Schedule for WSTRBORK (Code Wb ) Page 3 Snapshot Ionospheric Testing Observations 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 2 Jun 2005 Day 153 --- 16 27 40 J1159-2148 09 39 10 9.2 147.1 -2.3 0.0 -23 1 1 0 16 27 40 16 29 20 =1157-215 09 40 50 9.4 147.5 -2.3 0.0 77 F 1 0 16 29 20 J1212-2221 09 40 50 7.8 145.0 -2.5 0.0 -23 1 1 0 16 29 20 16 31 00 =1209-220 09 42 30 8.0 145.4 -2.5 0.0 77 F 1 0 16 31 00 J1159-2148 09 42 30 9.5 147.9 -2.3 0.0 -23 1 1 0 16 31 00 16 32 40 =1157-215 09 44 10 9.6 148.2 -2.3 0.0 77 F 1 0 16 32 40 J1212-2221 09 44 10 8.1 145.8 -2.5 0.0 -23 1 1 0 16 32 40 16 34 20 =1209-220 09 45 51 8.2 146.1 -2.4 0.0 77 F 1 0 16 34 20 J1159-2148 09 45 51 9.8 148.6 -2.2 0.0 -23 1 1 0 16 34 20 16 36 00 =1157-215 09 47 31 9.9 149.0 -2.2 0.0 77 F 1 0 16 36 00 J1159-2228 09 47 31 9.3 149.4 -2.2 0.0 -15 1 1 0 16 36 00 16 37 40 =1156-221 09 49 11 9.4 149.7 -2.2 0.0 85 F 1 0 16 37 40 J1159-2148 09 49 11 10.0 149.4 -2.2 0.0 -15 1 1 0 16 37 40 16 39 20 =1157-215 09 50 52 10.1 149.7 -2.2 0.0 85 F 1 0 16 39 20 J1159-2228 09 50 52 9.6 150.1 -2.1 0.0 -15 1 1 0 16 39 20 16 41 00 =1156-221 09 52 32 9.7 150.5 -2.1 0.0 85 F 1 0 16 41 00 J1159-2148 09 52 32 10.3 150.1 -2.1 0.0 -15 1 1 0 16 41 00 16 42 40 =1157-215 09 54 12 10.4 150.5 -2.1 0.0 85 F 1 0 16 42 40 J1159-2228 09 54 12 9.8 150.8 -2.1 0.0 -15 1 1 0 16 42 40 16 44 20 =1156-221 09 55 52 9.9 151.2 -2.1 0.0 85 F 1 0 16 44 20 J1159-2148 09 55 52 10.5 150.8 -2.1 0.0 -15 1 1 0 16 44 20 16 46 00 =1157-215 09 57 33 10.6 151.2 -2.0 0.0 85 F 1 0 16 47 40 3C273B 09 59 13 30.4 135.1 -2.5 0.0 7 1 1 0 16 47 40 16 55 40 --- 10 07 14 31.2 137.2 -2.4 0.0 480 F 1 0 16 58 40 J1224+0330 10 10 15 33.3 138.5 -2.2 0.0 161 1 1 0 16 58 40 16 59 40 =1222+037 10 11 15 33.4 138.7 -2.2 0.0 60 F 1 0 16 59 40 J1222+0413 10 11 15 34.3 139.1 -2.2 0.0 -15 1 1 0 16 59 40 17 01 20 =1219+044 10 12 55 34.5 139.6 -2.2 0.0 85 F 1 0 17 01 20 J1224+0330 10 12 55 33.6 139.2 -2.2 0.0 -15 1 1 0 17 01 20 17 03 00 =1222+037 10 14 35 33.7 139.7 -2.2 0.0 85 F 1 0 Schedule for WSTRBORK (Code Wb ) Page 4 Snapshot Ionospheric Testing Observations 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 2 Jun 2005 Day 153 --- 17 03 00 J1222+0413 10 14 35 34.6 140.0 -2.1 0.0 -15 1 1 0 17 03 00 17 04 40 =1219+044 10 16 16 34.8 140.5 -2.1 0.0 85 F 1 0 17 04 40 J1224+0330 10 16 16 33.9 140.1 -2.1 0.0 -15 1 1 0 17 04 40 17 06 20 =1222+037 10 17 56 34.1 140.6 -2.1 0.0 85 F 1 0 17 06 20 J1222+0413 10 17 56 34.9 141.0 -2.1 0.0 -15 1 1 0 17 06 20 17 08 00 =1219+044 10 19 36 35.1 141.4 -2.1 0.0 85 F 1 0 17 08 00 J1224+0330 10 19 36 34.2 141.0 -2.1 0.0 -15 1 1 0 17 08 00 17 09 40 =1222+037 10 21 16 34.4 141.5 -2.1 0.0 85 F 1 0 17 09 40 J1218-0119 10 21 16 30.4 145.3 -2.0 0.0 -29 1 1 0 17 09 40 17 11 20 =1216-010 10 22 57 30.6 145.8 -1.9 0.0 71 F 1 0 17 11 20 J1224+0330 10 22 57 34.5 142.0 -2.0 0.0 -29 1 1 0 17 11 20 17 13 00 =1222+037 10 24 37 34.7 142.5 -2.0 0.0 71 F 1 0 17 13 00 J1218-0119 10 24 37 30.7 146.2 -1.9 0.0 -29 1 1 0 17 13 00 17 14 40 =1216-010 10 26 17 30.8 146.7 -1.9 0.0 71 F 1 0 17 14 40 J1224+0330 10 26 17 34.8 142.9 -2.0 0.0 -29 1 1 0 17 14 40 17 16 20 =1222+037 10 27 58 35.0 143.4 -2.0 0.0 71 F 1 0 17 26 40 J1636+2112 10 38 19 17.0 77.1 -6.0 0.0 406 1 1 0 17 26 40 17 28 20 =1634+213 10 40 00 17.2 77.4 -5.9 0.0 100 F 1 0 17 30 00 J1636+2112 10 41 40 17.5 77.7 -5.9 0.0 86 1 1 0 17 30 00 17 31 40 =1634+213 10 43 20 17.7 78.1 -5.9 0.0 100 F 1 0 17 31 40 J1641+2257 10 43 20 18.4 76.0 -6.0 0.0 -19 1 1 0 17 31 40 17 33 20 =1639+230 10 45 00 18.6 76.3 -5.9 0.0 81 F 1 0 17 33 20 J1636+2112 10 45 00 18.0 78.4 -5.9 0.0 -19 1 1 0 17 33 20 17 35 00 =1634+213 10 46 41 18.2 78.7 -5.8 0.0 81 F 1 0 17 35 00 J1641+2257 10 46 41 18.8 76.6 -5.9 0.0 -19 1 1 0 17 35 00 17 36 40 =1639+230 10 48 21 19.1 76.9 -5.9 0.0 81 F 1 0 17 36 40 J1636+2112 10 48 21 18.5 79.0 -5.8 0.0 -19 1 1 0 17 36 40 17 38 20 =1634+213 10 50 01 18.7 79.3 -5.8 0.0 81 F 1 0 17 38 20 J1641+2257 10 50 01 19.3 77.2 -5.9 0.0 -19 1 1 0 17 38 20 17 40 00 =1639+230 10 51 41 19.6 77.6 -5.8 0.0 81 F 1 0 Schedule for WSTRBORK (Code Wb ) Page 5 Snapshot Ionospheric Testing Observations 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. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 2 Jun 2005 Day 153 --- 17 41 00 J1636+2112 10 52 42 19.1 79.8 -5.7 0.0 41 1 1 0 17 41 00 17 41 40 =1634+213 10 53 22 19.2 80.0 -5.7 0.0 40 F 1 0 17 41 40 J1642+2523 10 53 22 21.5 76.0 -5.8 0.0 -27 1 1 0 17 41 40 17 43 20 =1640+254 10 55 02 21.8 76.3 -5.8 0.0 73 F 1 0 17 43 20 J1636+2112 10 55 02 19.4 80.3 -5.7 0.0 -27 1 1 0 17 43 20 17 45 00 =1634+213 10 56 42 19.7 80.6 -5.7 0.0 73 F 1 0 17 45 00 J1642+2523 10 56 42 22.0 76.6 -5.8 0.0 -27 1 1 0 17 45 00 17 46 40 =1640+254 10 58 23 22.2 76.9 -5.7 0.0 73 F 1 0 17 46 40 J1636+2112 10 58 23 19.9 80.9 -5.6 0.0 -27 1 1 0 17 46 40 17 48 20 =1634+213 11 00 03 20.2 81.2 -5.6 0.0 73 F 1 0 17 48 20 J1642+2523 11 00 03 22.5 77.2 -5.7 0.0 -27 1 1 0 17 48 20 17 50 00 =1640+254 11 01 43 22.7 77.5 -5.7 0.0 73 F 1 0 17 50 00 J1636+2112 11 01 43 20.4 81.6 -5.6 0.0 -27 1 1 0 17 50 00 17 51 40 =1634+213 11 03 23 20.7 81.9 -5.6 0.0 73 F 1 0 17 51 40 J1642+2523 11 03 23 23.0 77.8 -5.7 0.0 -27 1 1 0 17 51 40 17 53 20 =1640+254 11 05 04 23.2 78.1 -5.6 0.0 73 F 1 0 17 53 20 J1644+1813 11 05 04 17.4 82.6 -5.7 0.0 -37 1 1 0 17 53 20 17 55 00 =1642+183 11 06 44 17.6 82.9 -5.6 0.0 63 F 1 0 17 55 00 J1642+2523 11 06 44 23.5 78.5 -5.6 0.0 -37 1 1 0 17 55 00 17 56 40 =1640+254 11 08 24 23.7 78.8 -5.6 0.0 63 F 1 0 17 56 40 J1644+1813 11 08 24 17.9 83.3 -5.6 0.0 -37 1 1 0 17 56 40 17 58 20 =1642+183 11 10 04 18.1 83.6 -5.6 0.0 63 F 1 0 17 58 20 J1642+2523 11 10 04 24.0 79.1 -5.5 0.0 -37 1 1 0 17 58 20 18 00 00 =1640+254 11 11 45 24.2 79.4 -5.5 0.0 63 F 1 0 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: eo999.18cm Matches group wb18cm in /aps3/sched/catalogs/freq.dat E-mail Foley 22Jan97 MFFE, must be using Low patch Setup group: 2 Station: WSTRBORK Total bit rate: 256 Format: MKIV1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 1st LO= 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 4 3 6 5 8 7 BBC SB= U U U U U U U U IF = 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. No pcal detection. LO sum= 1637.99 1637.99 1645.99 1645.99 1653.99 1653.99 1661.99 1661.99 BBC fr= 127.99 127.99 135.99 135.99 143.99 143.99 151.99 151.99 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off SOURCE LIST -- Snapshot Ionospheric Testing Observations 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) * J1159-2148 11 57 18.309811 * 11 59 51.906111 12 00 08.364401 0.27 1157-215 -21 32 11.49992 *-21 48 53.70757 -21 50 49.17241 0.78 J1159-21 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.250 scan hours, 8.429 baseline hours above horizon. * J1159-2228 11 56 37.757633 * 11 59 11.267254 11 59 27.707413 0.35 1156-221 -22 11 54.71372 *-22 28 36.90237 -22 30 32.54328 0.94 J1159-22 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.594 baseline hours above horizon. * J1212-2221 12 09 28.653794 * 12 12 03.697609 12 12 20.379490 0.31 1209-220 -22 05 10.38854 *-22 21 51.51342 -22 23 47.29736 0.86 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.139 scan hours, 3.385 baseline hours above horizon. * J1215-1731 12 13 11.668001 * 12 15 46.751756 12 16 03.492656 0.21 1213-172 -17 15 05.20060 *-17 31 45.40297 -17 33 39.75883 0.31 J1215-17 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.139 scan hours, 5.260 baseline hours above horizon. * J1218-0119 12 16 01.062434 * 12 18 34.929793 12 18 51.681004 0.28 1216-010 -01 03 15.08668 *-01 19 54.34138 -01 21 43.60871 0.52 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.056 scan hours, 1.312 baseline hours above horizon. * J1222+0413 12 19 49.255029 * 12 22 22.549619 12 22 39.310892 0.30 1219+044 04 29 53.60837 * 04 13 15.77616 04 11 28.33343 0.20 J1222+04 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 3.206 baseline hours above horizon. * J1224+0330 12 22 19.097168 * 12 24 52.421934 12 25 09.193350 0.31 1222+037 03 47 27.06610 * 03 30 50.29295 03 29 02.64562 0.24 J1224+03 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.156 scan hours, 6.701 baseline hours above horizon. J1229+0203 12 26 33.245835 * 12 29 06.699731 12 29 23.494262 0.30 1226+023 02 19 43.30564 * 02 03 08.59814 02 01 20.55370 0.20 3C273 /aps3/sched/catalogs/sources.vlba * 3C273B VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro J1229+02 0.222 scan hours, 12.119 baseline hours above horizon. * J1636+2112 16 34 28.653965 * 16 36 38.183456 16 36 53.384673 0.32 1634+213 21 18 56.44171 * 21 12 55.59502 21 12 08.41352 0.49 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.250 scan hours, 9.638 baseline hours above horizon. * J1641+2257 16 39 18.102927 * 16 41 25.227565 16 41 40.195915 0.24 1639+230 23 02 45.20241 * 22 57 04.03274 22 56 18.77175 0.43 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.867 baseline hours above horizon. * J1642+2523 16 40 36.555202 * 16 42 40.411845 16 42 55.070604 0.32 1640+254 25 28 43.57693 * 25 23 07.68189 25 22 22.98514 0.55 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.167 scan hours, 5.537 baseline hours above horizon. * J1644+1813 16 42 39.489851 * 16 44 52.432452 16 45 07.953357 0.84 1642+183 18 18 44.38577 * 18 13 17.23767 18 12 33.20535 1.82 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.139 scan hours, 3.457 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) J1159-2148 115.1 J1159-2228 115.1 J1212-2221 118.0 J1215-1731 117.5 J1218-0119 112.6 J1222+0413 111.1 J1224+0330 112.0 3C273B 113.6 J1636+2112 136.5 J1641+2257 134.8 J1642+2523 132.4 J1644+1813 139.5 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