COVER INFORMATION Station: HART (Code Hh ) Experiment: AGN Cores Exp. Code: EC070C Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: E. Chiaraluce Address: INAF-IAPS via del Fosso del Cavaliere, 100 00133 - Rome Italy Phone: +39 06 4548 8467 EMAIL: elia.chiaraluce@inaf.it Fax: --- Phone during observation: +39 06 4548 8467 Observing mode: Phase-referencing for sources at 3.6cm Notes: Targets: IGRJ00333+6122,NGC1068,QSOB0241+62,NGC1142,B30309+411B Phase calibrators: J0035+6130,J0239-0234,J0306+6243,J0259-0019,J0319+4130 D-terms calibrator : -- Fringe finder : J0237+2848, J2253+1608 Schedule for HART (Code Hh ) Page 2 AGN Cores 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 ---------------------------------------------------------------------------------------- --- Fri 25 Oct 2019 Day 298 --- Next scan frequencies: 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 230.49 230.49 230.49 230.49 294.49 294.49 294.49 294.49 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 17 15 00 J2253+1608 21 20 58 42.1 31.0 -1.6 0.0 0 0 17 15 00 17 17 54 =3C454.3 21 23 52 42.4 30.2 -1.5 0.0 174 45 17 15 01 19 42 43 B30309+411B 23 49 05 7.6 36.2 -3.4 D 0.0 8533 45 19 42 43 19 47 43 --- 23 54 06 8.3 35.5 -3.3 0.0 0 122 19 42 44 19 50 13 B30309+411B 23 56 36 8.6 35.2 -3.3 0.0 129 122 19 50 13 19 55 13 --- 00 01 37 9.3 34.5 -3.2 0.0 300 199 19 50 14 19 55 58 J0319+4130 00 02 22 8.4 35.2 -3.3 0.0 15 199 19 55 58 19 56 58 =3C84 00 03 22 8.5 35.1 -3.3 0.0 60 215 19 55 59 19 57 43 B30309+411B 00 04 08 9.6 34.1 -3.2 0.0 15 215 19 57 43 20 02 43 --- 00 09 08 10.2 33.4 -3.1 0.0 300 292 19 57 44 20 03 28 J0319+4130 00 09 53 9.3 34.2 -3.2 0.0 15 292 20 03 28 20 04 28 =3C84 00 10 54 9.5 34.0 -3.2 0.0 60 308 20 03 29 20 05 57 J0237+2848 00 12 24 24.9 35.2 -2.4 0.0 37 308 20 05 57 20 06 57 =0234+285 00 13 24 25.0 35.0 -2.4 0.0 60 323 20 05 58 20 07 42 J0239-0234 00 14 09 47.7 62.5 -2.4 0.0 -45 323 20 07 42 20 10 42 =0237-027 00 17 09 48.3 61.8 -2.4 0.0 135 369 20 07 43 20 11 27 NGC1068 00 17 54 46.3 59.3 -2.4 0.0 13 369 20 11 27 20 14 27 --- 00 20 55 46.9 58.6 -2.4 0.0 180 416 20 11 28 20 15 12 J0239-0234 00 21 40 49.2 60.7 -2.3 0.0 13 416 20 15 12 20 16 12 =0237-027 00 22 40 49.4 60.5 -2.3 0.0 60 431 20 15 13 20 16 57 NGC1068 00 23 25 47.4 58.0 -2.3 0.0 13 431 20 16 57 20 22 12 --- 00 28 41 48.4 56.8 -2.3 0.0 315 512 20 16 58 20 22 57 J0239-0234 00 29 26 50.7 58.8 -2.2 0.0 13 512 20 22 57 20 23 57 =0237-027 00 30 26 50.9 58.6 -2.2 0.0 60 528 20 22 58 20 24 42 NGC1068 00 31 12 48.8 56.1 -2.2 0.0 13 528 20 24 42 20 29 57 --- 00 36 27 49.8 54.8 -2.1 0.0 315 609 20 24 43 Schedule for HART (Code Hh ) Page 3 AGN Cores 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 ---------------------------------------------------------------------------------------- --- Fri 25 Oct 2019 Day 298 --- 20 30 42 J0239-0234 00 37 13 52.2 56.8 -2.1 0.0 13 609 20 30 42 20 31 42 =0237-027 00 38 13 52.4 56.6 -2.0 0.0 60 625 20 30 43 20 32 27 NGC1068 00 38 58 50.3 54.1 -2.1 0.0 13 625 20 32 27 20 37 42 --- 00 44 14 51.2 52.7 -2.0 0.0 315 706 20 32 28 20 38 27 J0239-0234 00 44 59 53.7 54.7 -1.9 0.0 13 706 20 38 27 20 39 27 =0237-027 00 45 59 53.8 54.4 -1.9 0.0 60 721 20 38 28 20 40 12 NGC1068 00 46 44 51.7 52.0 -1.9 0.0 13 721 20 40 12 20 45 27 --- 00 52 00 52.6 50.4 -1.9 0.0 315 802 20 40 13 ---------- Eff pointing ---------- 20 46 12 J0239-0234 00 52 45 55.1 52.4 -1.8 0.0 13 802 20 46 12 20 47 12 =0237-027 00 53 45 55.2 52.1 -1.8 0.0 60 818 20 46 13 ---------- Eff pointing ---------- 20 47 57 NGC1068 00 54 30 53.0 49.7 -1.8 0.0 13 818 20 47 57 20 52 57 --- 00 59 31 53.9 48.1 -1.7 0.0 300 895 20 47 58 ---------- Eff pointing ---------- 20 53 42 J0239-0234 01 00 16 56.4 50.0 -1.7 0.0 13 895 20 53 42 20 54 42 =0237-027 01 01 17 56.6 49.7 -1.7 0.0 60 910 20 53 43 ---------- Eff pointing ---------- 20 55 27 NGC1068 01 02 02 54.3 47.3 -1.7 0.0 13 910 20 55 27 21 00 27 --- 01 07 02 55.1 45.7 -1.6 0.0 300 988 20 55 28 21 01 12 J0239-0234 01 07 48 57.7 47.5 -1.5 0.0 13 988 21 01 12 21 02 12 =0237-027 01 08 48 57.8 47.1 -1.5 0.0 60 1003 21 01 13 21 02 57 NGC1068 01 09 33 55.5 44.9 -1.6 0.0 13 1003 21 02 57 21 08 12 --- 01 14 49 56.3 43.0 -1.5 0.0 315 1084 21 02 58 21 08 57 J0239-0234 01 15 34 58.9 44.7 -1.4 0.0 13 1084 21 08 57 21 09 57 =0237-027 01 16 34 59.1 44.3 -1.4 0.0 60 1100 21 08 58 21 10 42 NGC1068 01 17 19 56.7 42.1 -1.4 0.0 13 1100 21 10 42 21 15 57 --- 01 22 35 57.5 40.2 -1.4 0.0 315 1181 21 10 43 Schedule for HART (Code Hh ) Page 4 AGN Cores 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 ---------------------------------------------------------------------------------------- --- Fri 25 Oct 2019 Day 298 --- 21 16 42 J0239-0234 01 23 20 60.1 41.6 -1.3 0.0 13 1181 21 16 42 21 17 42 =0237-027 01 24 20 60.3 41.2 -1.3 0.0 60 1196 21 16 43 21 18 27 NGC1068 01 25 05 57.9 39.2 -1.3 0.0 13 1196 21 18 27 21 23 42 --- 01 30 21 58.6 37.1 -1.2 0.0 315 1278 21 18 28 21 24 27 J0239-0234 01 31 06 61.2 38.4 -1.2 0.0 13 1278 21 24 27 21 25 27 =0237-027 01 32 07 61.4 38.0 -1.1 0.0 60 1293 21 24 28 21 26 12 NGC1068 01 32 52 58.9 36.1 -1.2 0.0 13 1293 21 26 12 21 31 27 --- 01 38 08 59.6 33.9 -1.1 0.0 315 1374 21 26 13 21 32 12 J0239-0234 01 38 53 62.3 35.0 -1.0 0.0 13 1374 21 32 12 21 33 12 =0237-027 01 39 53 62.4 34.5 -1.0 0.0 60 1390 21 32 13 21 33 57 NGC1068 01 40 38 59.9 32.8 -1.1 0.0 13 1390 21 33 57 21 39 12 --- 01 45 54 60.5 30.5 -1.0 0.0 315 1471 21 33 58 21 39 57 J0239-0234 01 46 39 63.2 31.3 -0.9 0.0 13 1471 21 39 57 21 40 57 =0237-027 01 47 39 63.3 30.8 -0.9 0.0 60 1486 21 39 58 21 41 50 J0259-0019 01 48 32 59.0 36.9 -1.2 0.0 16 1486 21 41 50 21 42 50 =0256-005 01 49 32 59.2 36.5 -1.2 0.0 60 1502 21 41 51 21 43 35 NGC1142 01 50 17 59.7 34.2 -1.1 0.0 17 1502 21 43 35 21 48 35 --- 01 55 18 60.3 32.0 -1.0 0.0 300 1579 21 43 36 21 49 20 J0259-0019 01 56 03 60.0 33.7 -1.1 0.0 17 1579 21 49 20 21 50 20 =0256-005 01 57 03 60.1 33.3 -1.1 0.0 60 1595 21 49 21 21 51 05 NGC1142 01 57 48 60.6 30.9 -1.0 0.0 17 1595 21 51 05 21 56 05 --- 02 02 49 61.2 28.6 -0.9 0.0 300 1672 21 51 06 21 56 50 J0259-0019 02 03 34 60.9 30.4 -0.9 0.0 17 1672 21 56 50 21 57 50 =0256-005 02 04 35 61.0 29.9 -0.9 0.0 60 1687 21 56 51 21 58 35 NGC1142 02 05 20 61.4 27.4 -0.8 0.0 17 1687 21 58 35 22 03 35 --- 02 10 21 61.9 25.0 -0.8 0.0 300 1765 21 58 36 22 04 20 J0259-0019 02 11 06 61.7 26.8 -0.8 0.0 17 1765 22 04 20 22 05 20 =0256-005 02 12 06 61.8 26.4 -0.8 0.0 60 1780 22 04 21 22 06 05 NGC1142 02 12 51 62.2 23.8 -0.7 0.0 17 1780 22 06 05 22 11 05 --- 02 17 52 62.6 21.2 -0.6 0.0 300 1857 22 06 06 Schedule for HART (Code Hh ) Page 5 AGN Cores 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 ---------------------------------------------------------------------------------------- --- Fri 25 Oct 2019 Day 298 --- 22 11 50 J0259-0019 02 18 37 62.4 23.1 -0.7 0.0 17 1857 22 11 50 22 12 50 =0256-005 02 19 37 62.5 22.6 -0.7 0.0 60 1873 22 11 51 22 13 35 NGC1142 02 20 22 62.8 19.9 -0.6 0.0 17 1873 22 13 35 22 18 35 --- 02 25 23 63.2 17.3 -0.5 0.0 300 1950 22 13 36 22 19 20 J0259-0019 02 26 08 63.1 19.2 -0.6 0.0 17 1950 22 19 20 22 20 20 =0256-005 02 27 08 63.1 18.7 -0.6 0.0 60 1966 22 19 21 22 21 05 NGC1142 02 27 53 63.3 15.9 -0.5 0.0 17 1966 22 21 05 22 26 05 --- 02 32 54 63.6 13.2 -0.4 0.0 300 2043 22 21 06 22 26 50 J0259-0019 02 33 39 63.6 15.2 -0.4 0.0 17 2043 22 26 50 22 27 50 =0256-005 02 34 40 63.6 14.7 -0.4 0.0 60 2058 22 26 51 22 28 35 NGC1142 02 35 25 63.7 11.8 -0.3 0.0 17 2058 22 28 35 22 33 35 --- 02 40 25 63.9 9.0 -0.3 0.0 300 2136 22 28 36 22 34 20 J0259-0019 02 41 11 63.9 11.0 -0.3 0.0 17 2136 22 34 20 22 35 20 =0256-005 02 42 11 64.0 10.5 -0.3 0.0 60 2151 22 34 21 22 36 05 NGC1142 02 42 56 64.0 7.6 -0.2 0.0 17 2151 22 36 05 22 41 05 --- 02 47 57 64.1 4.7 -0.1 0.0 300 2228 22 36 06 22 41 50 J0259-0019 02 48 42 64.2 6.8 -0.2 0.0 17 2228 22 41 50 22 42 50 =0256-005 02 49 42 64.2 6.2 -0.2 0.0 60 2244 22 41 51 22 43 35 NGC1142 02 50 27 64.2 3.3 -0.1 0.0 17 2244 22 43 35 22 48 35 --- 02 55 28 64.2 0.4 -0.0 0.0 300 2321 22 43 36 22 49 20 J0259-0019 02 56 13 64.3 2.5 -0.1 0.0 17 2321 22 49 20 22 50 20 =0256-005 02 57 13 64.4 1.9 -0.1 0.0 60 2337 22 49 21 22 51 05 NGC1142 02 57 58 64.2 359.0 0.0 0.0 17 2337 22 51 05 22 56 05 --- 03 02 59 64.2 356.1 0.1 0.0 300 2414 22 51 06 22 56 50 J0259-0019 03 03 44 64.4 358.1 0.1 0.0 17 2414 22 56 50 22 57 50 =0256-005 03 04 44 64.3 357.5 0.1 0.0 60 2429 22 56 51 22 58 35 NGC1142 03 05 30 64.1 354.7 0.2 0.0 17 2429 22 58 35 23 03 35 --- 03 10 30 64.0 351.8 0.2 0.0 300 2507 22 58 36 23 04 20 J0259-0019 03 11 16 64.2 353.8 0.2 0.0 17 2507 23 04 20 23 05 20 =0256-005 03 12 16 64.2 353.2 0.2 0.0 60 2522 23 04 21 Schedule for HART (Code Hh ) Page 6 AGN Cores 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 ---------------------------------------------------------------------------------------- --- Fri 25 Oct 2019 Day 298 --- 23 06 05 NGC1142 03 13 01 63.9 350.4 0.3 0.0 17 2522 23 06 05 23 11 05 --- 03 18 02 63.7 347.6 0.4 0.0 300 2599 23 06 06 23 11 50 J0259-0019 03 18 47 64.0 349.5 0.3 0.0 17 2599 23 11 50 23 15 00 =0256-005 03 21 57 63.8 347.8 0.4 0.0 190 2648 23 11 51 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess319.C2048 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: hh6cm Values confirmed by E-mail Jonathan Quick 20140219 (CR) ****** Only 256.00 of 512.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 7 Station: HART Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 BBC SB= L L U U L L U U L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 230.49 230.49 230.49 230.49 294.49 294.49 294.49 294.49 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 9 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * J00333+6122 00 30 27.633410 * 00 33 18.340000 00 34 27.814192 0.00 61 11 10.96519 * 61 27 43.13000 61 34 19.42493 0.00 From catalog imbedded in main SCHED input file. * NGC1068 02 40 07.053635 * 02 42 40.718000 02 43 41.826568 0.00 -00 13 30.83131 *-00 00 47.06700 00 04 13.98641 0.00 From catalog imbedded in main SCHED input file. * B0241+62 02 41 00.673677 * 02 44 57.697000 02 46 33.491798 0.00 62 15 27.54350 * 62 28 06.51600 62 32 59.05128 0.00 From catalog imbedded in main SCHED input file. * NGC1142 02 52 38.707072 * 02 55 12.232000 02 56 13.277604 0.00 -00 23 07.98356 *-00 11 00.80400 -00 06 14.15445 0.00 From catalog imbedded in main SCHED input file. * B30309+411B 03 09 44.793386 * 03 13 01.962000 03 14 20.630810 0.00 41 08 48.80240 * 41 20 01.18300 41 24 21.00205 0.00 From catalog imbedded in main SCHED input file. 0032+612 00 32 33.458203 * 00 35 25.310617 00 36 35.252170 0.57 * J0035+6130 61 13 59.91573 * 61 30 30.76101 61 37 06.35162 0.30 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 73 observations. 0234+285 02 34 55.589590 * 02 37 52.405677 02 39 02.859329 0.00 * J0237+2848 28 35 11.40773 * 28 48 08.98999 28 53 13.65721 0.00 J0237+28 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 58420 observations. 0237-027 02 37 13.715986 * 02 39 45.472273 02 40 45.830980 0.01 * J0239-0234 -02 47 32.85455 *-02 34 40.91457 -02 29 36.54879 0.01 J0239-02 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 8842 observations. 0256-005 02 56 55.117078 * 02 59 28.516158 03 00 29.508522 0.01 * J0259-0019 -00 31 54.17486 *-00 19 59.97541 -00 15 18.42408 0.01 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 5055 observations. 0302+625 03 02 35.870311 * 03 06 42.659551 03 08 22.211263 0.03 * J0306+6243 62 31 28.17725 * 62 43 02.02414 62 47 27.00723 0.02 J0306+62 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 3242 observations. 3C84 03 16 29.567265 * 03 19 48.160096 03 21 07.370323 1.50 * J0319+4130 41 19 51.91692 * 41 30 42.10404 41 34 52.76945 2.86 0316+413 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J0319+41 GSFC 2016a X/S astro solution, 10291 observations. 3C454.3 22 51 29.519739 * 22 53 57.747939 22 54 56.296583 0.65 * J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 18.83043 0.73 2251+158 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 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 J00333+6122sess319.C2048 1 2 3 4 5 6 7 8 10 11 0.800 62.400 NGC1068 sess319.C2048 1 2 3 4 5 6 7 8 9 10 11 1.004 89.213 B0241+62 sess319.C2048 1 2 3 4 5 6 7 8 10 11 0.425 33.150 NGC1142 sess319.C2048 1 2 3 4 5 6 7 8 9 10 11 1.000 76.167 B30309+411Bsess319.C2048 1 2 3 4 5 6 7 8 9 10 11 0.500 41.167 J0035+6130 sess319.C2048 1 2 3 4 5 6 7 8 10 11 0.217 16.899 J0237+2848 sess319.C2048 1 2 3 4 5 6 7 8 9 10 11 0.017 1.517 J0239-0234 sess319.C2048 1 2 3 4 5 6 7 8 9 10 11 0.250 20.913 J0259-0019 sess319.C2048 1 2 3 4 5 6 7 8 9 10 11 0.253 19.350 J0306+6243 sess319.C2048 1 2 3 4 5 6 7 8 10 11 0.117 9.100 J0319+4130 sess319.C2048 1 2 3 4 5 6 7 8 9 10 11 0.117 9.333 J2253+1608 sess319.C2048 1 2 3 4 5 6 7 8 9 10 11 0.048 4.398 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) J00333+6122 128.3 NGC1068 163.7 B0241+62 129.0 NGC1142 161.4 B30309+411B 146.6 J0035+6130 128.3 J0237+2848 161.0 J0239-0234 162.1 J0259-0019 160.5 J0306+6243 128.0 J0319+4130 145.7 J2253+1608 135.1 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