COVER INFORMATION Station: HART (Code Hh ) Experiment: Snapshot Ionospheric Testing Observations Exp. Code: N05L3 Schedule Version: 1.02 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 Phase referencing is too fast for JODRELL1 All targets are strong Schedule for HART (Code Hh ) 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) ---------------------------------------------------------------------------------------- --- Mon 6 Jun 2005 Day 157 --- 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 23 40 00 J1745+1720 18 32 39 45.3 344.0 0.8 0.0 0 1 1 0 23 40 00 23 44 00 =1743+173 18 36 40 45.0 342.7 0.8 0.0 240 F 1 0 23 44 00 J1752+1734 18 36 40 45.3 345.1 0.7 0.0 -30 1 1 0 23 44 00 23 45 40 =1750+175 18 38 20 45.2 344.6 0.8 0.0 70 F 1 0 23 45 40 J1745+1720 18 38 20 44.9 342.2 0.9 0.0 -30 1 1 0 23 45 40 23 47 20 =1743+173 18 40 01 44.8 341.6 0.9 0.0 70 F 1 0 23 47 20 J1752+1734 18 40 01 45.1 344.1 0.8 0.0 -30 1 1 0 23 47 20 23 49 00 =1750+175 18 41 41 45.0 343.5 0.8 0.0 70 F 1 0 23 49 00 J1745+1720 18 41 41 44.7 341.1 0.9 0.0 -30 1 1 0 23 49 00 23 50 40 =1743+173 18 43 21 44.6 340.6 1.0 0.0 70 F 1 0 23 50 40 J1752+1734 18 43 21 44.9 343.0 0.8 0.0 -30 1 1 0 23 50 40 23 52 20 =1750+175 18 45 01 44.7 342.4 0.9 0.0 70 F 1 0 23 53 20 J1745+1720 18 46 02 44.4 339.7 1.0 0.0 29 1 1 0 23 53 20 23 54 00 =1743+173 18 46 42 44.3 339.5 1.0 0.0 40 F 1 0 23 54 00 J1756+1535 18 46 42 46.8 342.4 0.8 0.0 -33 1 1 0 23 54 00 23 55 40 --- 18 48 22 46.7 341.9 0.9 0.0 67 F 1 0 23 55 40 J1745+1720 18 48 22 44.2 339.0 1.0 0.0 -33 1 1 0 23 55 40 23 57 20 =1743+173 18 50 02 44.0 338.5 1.1 0.0 67 F 1 0 23 57 20 J1756+1535 18 50 02 46.6 341.3 0.9 0.0 -33 1 1 0 23 57 20 23 59 00 --- 18 51 42 46.5 340.7 0.9 0.0 67 F 1 0 --- Start: Mon 6 Jun 2005 Day 157 -- Stop: Tue 7 Jun 2005 Day 158 --- 23 59 00 J1745+1720 18 51 42 43.9 337.9 1.1 0.0 -33 1 1 0 23 59 00 00 00 40 =1743+173 18 53 23 43.8 337.4 1.1 0.0 67 F 1 0 Schedule for HART (Code Hh ) 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) ---------------------------------------------------------------------------------------- --- Tue 7 Jun 2005 Day 158 --- 00 00 40 J1756+1535 18 53 23 46.3 340.2 0.9 0.0 -33 1 1 0 00 00 40 00 02 20 --- 18 55 03 46.2 339.6 1.0 0.0 67 F 1 0 00 02 20 J1745+1720 18 55 03 43.6 336.9 1.2 0.0 -33 1 1 0 00 02 20 00 04 00 =1743+173 18 56 43 43.5 336.4 1.2 0.0 67 F 1 0 00 04 00 J1719+1745 18 56 43 40.4 329.0 1.6 0.0 -40 1 1 0 00 04 00 00 05 40 =1717+178 18 58 24 40.2 328.6 1.6 0.0 60 F 1 0 00 05 40 J1745+1720 18 58 24 43.3 335.9 1.2 0.0 -40 1 1 0 00 05 40 00 07 20 =1743+173 19 00 04 43.2 335.4 1.2 0.0 60 F 1 0 00 07 20 J1719+1745 19 00 04 40.0 328.1 1.7 0.0 -40 1 1 0 00 07 20 00 09 00 =1717+178 19 01 44 39.8 327.7 1.7 0.0 60 F 1 0 00 09 00 J1745+1720 19 01 44 43.0 334.9 1.3 0.0 -40 1 1 0 00 09 00 00 10 40 =1743+173 19 03 24 42.8 334.4 1.3 0.0 60 F 1 0 00 10 40 J1719+1745 19 03 24 39.6 327.2 1.7 0.0 -40 1 1 0 00 10 40 00 12 20 =1717+178 19 05 05 39.4 326.8 1.8 0.0 60 F 1 0 00 12 20 J1745+1720 19 05 05 42.7 333.9 1.3 0.0 -40 1 1 0 00 12 20 00 14 00 =1743+173 19 06 45 42.5 333.4 1.3 0.0 60 F 1 0 00 17 00 J2148+0657 19 09 45 39.4 55.0 -2.6 0.0 33 1 1 0 00 17 00 00 26 00 =2145+067 19 18 47 41.0 53.0 -2.5 0.0 540 F 1 0 00 29 00 J2129-1538 19 21 47 58.5 77.3 -2.1 0.0 108 1 1 0 00 29 00 00 30 00 =2126-158 19 22 48 58.7 77.1 -2.1 0.0 60 F 1 0 00 30 00 J2129-1821 19 22 48 59.7 82.1 -2.1 0.0 -32 1 1 0 00 30 00 00 31 40 =2126-185 19 24 28 60.1 81.8 -2.1 0.0 68 F 1 0 00 31 40 J2129-1538 19 24 28 59.1 76.8 -2.1 0.0 -32 1 1 0 00 31 40 00 33 20 =2126-158 19 26 08 59.5 76.5 -2.1 0.0 68 F 1 0 00 33 20 J2129-1821 19 26 08 60.5 81.5 -2.1 0.0 -32 1 1 0 00 33 20 00 35 00 =2126-185 19 27 48 60.9 81.2 -2.0 0.0 68 F 1 0 00 35 00 J2129-1538 19 27 48 59.8 76.1 -2.0 0.0 -32 1 1 0 00 35 00 00 36 40 =2126-158 19 29 29 60.2 75.8 -2.0 0.0 68 F 1 0 00 36 40 J2129-1821 19 29 29 61.2 80.9 -2.0 0.0 -32 1 1 0 00 36 40 00 38 20 =2126-185 19 31 09 61.6 80.6 -2.0 0.0 68 F 1 0 Schedule for HART (Code Hh ) 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) ---------------------------------------------------------------------------------------- --- Tue 7 Jun 2005 Day 158 --- 00 38 20 J2129-1538 19 31 09 60.6 75.5 -2.0 0.0 -32 1 1 0 00 38 20 00 40 00 =2126-158 19 32 49 60.9 75.1 -1.9 0.0 68 F 1 0 00 40 00 J2130-0927 19 32 49 57.6 64.9 -2.0 0.0 -39 1 1 0 00 40 00 00 41 40 =2127-096 19 34 29 57.9 64.4 -1.9 0.0 61 F 1 0 00 41 40 J2129-1538 19 34 29 61.3 74.7 -1.9 0.0 -39 1 1 0 00 41 40 00 43 20 =2126-158 19 36 10 61.7 74.4 -1.9 0.0 61 F 1 0 00 43 20 J2130-0927 19 36 10 58.3 64.0 -1.9 0.0 -39 1 1 0 00 43 20 00 45 00 =2127-096 19 37 50 58.6 63.5 -1.9 0.0 61 F 1 0 00 45 00 J2129-1538 19 37 50 62.0 74.0 -1.9 0.0 -39 1 1 0 00 45 00 00 46 40 =2126-158 19 39 30 62.4 73.6 -1.8 0.0 61 F 1 0 00 46 40 J2130-0927 19 39 30 59.0 63.1 -1.9 0.0 -39 1 1 0 00 46 40 00 48 20 =2127-096 19 41 11 59.3 62.6 -1.8 0.0 61 F 1 0 00 49 20 J2129-1538 19 42 11 63.0 73.0 -1.8 0.0 21 1 1 0 00 49 20 00 50 00 =2126-158 19 42 51 63.1 72.8 -1.8 0.0 40 F 1 0 00 50 00 J2131-1207 19 42 51 60.9 66.9 -1.8 0.0 -34 1 1 0 00 50 00 00 51 40 =2128-123 19 44 31 61.2 66.4 -1.8 0.0 66 F 1 0 00 51 40 J2129-1538 19 44 31 63.5 72.4 -1.7 0.0 -34 1 1 0 00 51 40 00 53 20 =2126-158 19 46 11 63.8 72.0 -1.7 0.0 66 F 1 0 00 53 20 J2131-1207 19 46 11 61.6 66.0 -1.8 0.0 -34 1 1 0 00 53 20 00 55 00 =2128-123 19 47 52 61.9 65.5 -1.7 0.0 66 F 1 0 00 55 00 J2129-1538 19 47 52 64.2 71.6 -1.7 0.0 -34 1 1 0 00 55 00 00 56 40 =2126-158 19 49 32 64.5 71.2 -1.7 0.0 66 F 1 0 00 56 40 J2131-1207 19 49 32 62.2 65.0 -1.7 0.0 -34 1 1 0 00 56 40 00 58 20 =2128-123 19 51 12 62.6 64.6 -1.7 0.0 66 F 1 0 00 58 20 J2129-1538 19 51 12 64.9 70.7 -1.6 0.0 -34 1 1 0 00 58 20 01 00 00 =2126-158 19 52 52 65.2 70.3 -1.6 0.0 66 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 hh18cm in /aps3/sched/catalogs/freq.dat Values confirmed by E-mail Jonathan Quick 291100 (CR) Setup group: 11 Station: HART 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: 11 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) * J1139+7654 11 36 50.402483 * 11 39 51.538717 11 40 13.600280 1.47 1136+771 77 11 09.68453 * 76 54 32.34642 76 53 06.06924 0.65 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.100 scan hours, 1.894 baseline hours above horizon. * J1323+7942 13 23 30.967861 * 13 23 51.569831 13 24 00.836917 2.82 1323+799 79 58 27.57995 * 79 42 51.84705 79 41 25.76771 0.44 J1323+79 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.283 scan hours, 8.751 baseline hours above horizon. * J1357+7643 13 57 42.117003 * 13 57 55.371534 13 58 02.806741 0.87 1357+769 76 57 53.35424 * 76 43 21.05104 76 41 58.55255 0.40 J1357+76 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.185 baseline hours above horizon. * J1406+7828 14 06 56.652670 * 14 06 36.566944 14 06 41.585608 3.71 1406+787 78 42 22.78156 * 78 28 10.40623 78 26 49.33489 0.63 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.161 baseline hours above horizon. * J1719+1745 17 17 00.324732 * 17 19 13.048481 17 19 28.559864 0.32 1717+178 17 48 08.51599 * 17 45 06.43721 17 44 37.64380 0.22 J1719+17 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 1.739 baseline hours above horizon. * J1745+1720 17 43 22.235899 * 17 45 35.208167 17 45 50.704699 0.32 1743+173 17 21 09.18647 * 17 20 01.42378 17 19 43.97628 0.22 J1745+17 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.300 scan hours, 8.450 baseline hours above horizon. * J1752+1734 17 50 33.364387 * 17 52 46.002901 17 53 01.452521 0.39 1750+175 17 34 56.75224 * 17 34 20.35018 17 34 06.02002 0.56 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.350 baseline hours above horizon. * J1756+1535 17 54 37.953509 * 17 56 53.102132 17 57 08.795390 0.32 15 35 39.32316 * 15 35 20.82657 15 35 08.41956 0.24 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.232 baseline hours above horizon. * J2129-1538 21 26 26.777538 * 21 29 12.175905 21 29 30.394943 0.21 2126-158 -15 51 50.34727 *-15 38 41.04110 -15 37 18.72623 0.30 J2129-15 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.250 scan hours, 9.451 baseline hours above horizon. * J2129-1821 21 26 33.897232 * 21 29 21.419113 21 29 39.890466 0.27 2126-185 -18 34 32.47350 *-18 21 22.79035 -18 19 59.57129 0.49 J2129-18 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.231 baseline hours above horizon. * J2130-0927 21 27 38.408364 * 21 30 19.088248 21 30 36.744372 0.23 2127-096 -09 40 49.81991 *-09 27 37.43511 -09 26 16.73888 0.37 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.505 baseline hours above horizon. * J2131-1207 21 28 52.676063 * 21 31 35.261755 21 31 53.136782 0.21 2128-123 -12 20 20.53564 *-12 07 04.79603 -12 05 42.84703 0.30 J2131-12 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.844 baseline hours above horizon. * J2148+0657 21 45 36.078475 * 21 48 05.458673 21 48 21.701858 0.30 2145+067 06 43 40.90460 * 06 57 38.60420 06 58 59.23842 0.20 J2148+06 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.150 scan hours, 7.749 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) J1139+7654 70.1 J1323+7942 73.5 J1357+7643 76.8 J1406+7828 75.8 J1719+1745 139.3 J1745+1720 138.4 J1752+1734 137.7 J1756+1535 139.3 J2129-1538 116.6 J2129-1821 117.4 J2130-0927 114.3 J2131-1207 115.0 J2148+0657 103.7 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