COVER INFORMATION Station: BADARY (Code Bd ) Experiment: ET048B Exp. Code: ET048B Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Oleg Titov Address: Geoscience Australia Cnr Jerrabomberra Avenue and Hindmarsh Drive Symonston ACT 2609 GPO Box 378 Canberra ACT 2601 Australia Phone: +61 2 6249 9064 EMAIL: Oleg.Titov@ga.gov.au Fax: Phone during observation: +61 2 6249 9064 Observing mode: Notes: Imaging extragalactic radio sources with extremely large radio-optical offsets Devided on 3 epochs: ET048A, ET048B, ET048C 6cm, 1024 Mbps, RCP & LCP, 2 bit sampling Prepared by Alexey Melnikov, aem@iaaras.ru Schedule for BADARY (Code Bd ) Page 2 ET048B 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 ---------------------------------------------------------------------------------------- --- Thu 10 Mar 2022 Day 69 --- Next scan frequencies: 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 458.49 458.49 458.49 458.49 522.49 522.49 522.49 522.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 09 30 00 J0205+3212 03 31 07 65.2 586.7 1.4 32.2 0 0 09 30 00 09 38 00 =0202+319 03 39 08 64.2 590.0 1.5 34.1 480 62 09 30 01 09 39 00 J0112+3208 03 40 08 57.1 608.0 2.4 42.7 17 62 09 39 00 09 44 00 =0110+318 03 45 09 56.4 609.4 2.5 43.2 300 100 09 39 01 09 44 00 J0112+3208 03 45 09 56.4 609.4 2.5 43.2 -5 100 No stop 09 45 30 =0110+318 03 46 39 56.2 609.8 2.5 43.4 85 112 09 44 01 09 45 30 0116+319 03 46 39 57.2 608.0 2.4 42.7 -17 112 No stop 09 49 00 --- 03 50 10 56.7 609.0 2.5 43.1 193 138 09 45 31 09 49 00 J0112+3208 03 50 10 55.7 610.8 2.6 43.7 -17 138 No stop 09 50 30 =0110+318 03 51 40 55.4 611.2 2.6 43.8 73 150 09 49 01 09 50 30 0116+319 03 51 40 56.5 609.4 2.5 43.2 -17 150 No stop 09 54 00 --- 03 55 11 55.9 610.3 2.6 43.6 193 177 09 50 31 09 54 40 J0112+3208 03 55 51 54.8 612.3 2.7 44.2 23 177 09 54 40 09 56 10 =0110+318 03 57 21 54.6 612.7 2.7 44.3 90 188 09 54 41 09 56 10 0116+319 03 57 21 55.6 610.9 2.6 43.8 -17 188 No stop 09 59 40 --- 04 00 52 55.1 611.9 2.7 44.1 193 215 09 56 11 09 59 40 J0112+3208 04 00 52 54.1 613.6 2.8 44.6 -17 215 No stop 10 01 10 =0110+318 04 02 22 53.9 614.0 2.8 44.7 73 227 09 59 41 10 01 10 0116+319 04 02 22 54.9 612.3 2.7 44.2 -16 227 No stop 10 04 40 --- 04 05 52 54.4 613.2 2.8 44.5 194 254 10 01 11 10 05 20 J0112+3208 04 06 33 53.2 615.0 2.9 45.0 23 254 10 05 20 10 06 50 =0110+318 04 08 03 53.0 615.4 2.9 45.1 90 265 10 05 21 10 06 50 0116+319 04 08 03 54.1 613.8 2.8 44.7 -16 265 No stop 10 10 20 --- 04 11 33 53.5 614.6 2.8 44.9 194 292 10 06 51 10 10 20 J0112+3208 04 11 33 52.5 616.3 3.0 45.3 -17 292 No stop 10 11 50 =0110+318 04 13 04 52.3 616.6 3.0 45.4 73 304 10 10 21 10 11 50 0116+319 04 13 04 53.3 615.0 2.9 45.0 -16 304 No stop 10 15 20 --- 04 16 34 52.8 615.9 2.9 45.2 194 331 10 11 51 Schedule for BADARY (Code Bd ) Page 3 ET048B 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 ---------------------------------------------------------------------------------------- --- Thu 10 Mar 2022 Day 69 --- 10 16 00 J0112+3208 04 17 14 51.6 617.6 3.1 45.6 24 331 10 16 00 10 17 30 =0110+318 04 18 45 51.4 618.0 3.1 45.7 90 342 10 16 01 10 17 30 0116+319 04 18 45 52.5 616.4 3.0 45.4 -16 342 No stop 10 21 00 --- 04 22 15 51.9 617.3 3.0 45.6 194 369 10 17 31 10 21 00 J0112+3208 04 22 15 50.9 618.8 3.1 45.9 -16 369 No stop 10 22 30 =0110+318 04 23 45 50.6 619.2 3.2 45.9 74 381 10 21 01 10 22 30 0116+319 04 23 45 51.7 617.6 3.0 45.6 -16 381 No stop 10 26 00 --- 04 27 16 51.2 618.5 3.1 45.8 194 408 10 22 31 10 26 40 J0112+3208 04 27 56 50.0 620.1 3.2 46.1 24 408 10 26 40 10 28 10 =0110+318 04 29 26 49.8 620.5 3.3 46.2 90 419 10 26 41 10 28 10 0116+319 04 29 26 50.8 619.0 3.1 45.9 -16 419 No stop 10 31 40 --- 04 32 57 50.3 619.8 3.2 46.1 194 446 10 28 11 10 31 40 J0112+3208 04 32 57 49.2 621.3 3.3 46.3 -16 446 No stop 10 33 10 =0110+318 04 34 27 49.0 621.6 3.3 46.4 74 458 10 31 41 10 33 10 0116+319 04 34 27 50.1 620.1 3.2 46.2 -16 458 No stop 10 36 40 --- 04 37 58 49.5 620.9 3.3 46.3 194 485 10 33 11 10 37 20 J0112+3208 04 38 38 48.4 622.5 3.4 46.5 24 485 10 37 20 10 38 50 =0110+318 04 40 08 48.1 622.8 3.4 46.6 90 496 10 37 21 10 38 50 0116+319 04 40 08 49.2 621.4 3.3 46.4 -16 496 No stop 10 42 20 --- 04 43 39 48.7 622.2 3.4 46.5 194 523 10 38 51 10 42 20 J0112+3208 04 43 39 47.6 623.6 3.5 46.7 -16 523 No stop 10 43 50 =0110+318 04 45 09 47.4 623.9 3.5 46.7 74 535 10 42 21 10 43 50 0116+319 04 45 09 48.4 622.5 3.4 46.5 -16 535 No stop 10 47 20 --- 04 48 39 47.9 623.3 3.5 46.6 194 562 10 43 51 10 48 00 J0112+3208 04 49 20 46.7 624.8 3.6 46.8 24 562 10 48 00 10 49 30 =0110+318 04 50 50 46.5 625.1 3.6 46.8 90 573 10 48 01 10 49 30 0116+319 04 50 50 47.6 623.7 3.5 46.7 -15 573 No stop 10 53 00 --- 04 54 20 47.0 624.5 3.6 46.8 195 600 10 49 31 10 53 00 J0112+3208 04 54 20 46.0 625.9 3.7 46.9 -16 600 No stop 10 54 30 =0110+318 04 55 51 45.7 626.2 3.7 46.9 74 612 10 53 01 Schedule for BADARY (Code Bd ) Page 4 ET048B 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 ---------------------------------------------------------------------------------------- --- Thu 10 Mar 2022 Day 69 --- 10 54 30 0116+319 04 55 51 46.8 624.8 3.6 46.8 -15 612 No stop 10 58 00 --- 04 59 21 46.3 625.6 3.6 46.9 195 638 10 54 31 10 58 40 J0112+3208 05 00 01 45.1 627.0 3.8 46.9 24 638 10 58 40 11 00 10 =0110+318 05 01 32 44.8 627.3 3.8 47.0 90 650 10 58 41 11 00 10 0116+319 05 01 32 45.9 626.0 3.7 46.9 -15 650 No stop 11 03 40 --- 05 05 02 45.4 626.7 3.7 47.0 195 677 11 00 11 11 03 40 J0112+3208 05 05 02 44.3 628.1 3.9 47.0 -15 677 No stop 11 05 10 =0110+318 05 06 32 44.1 628.4 3.9 47.0 75 688 11 03 41 11 05 10 0116+319 05 06 32 45.1 627.0 3.8 47.0 -15 688 No stop 11 08 40 --- 05 10 03 44.6 627.7 3.8 47.0 195 715 11 05 11 11 09 20 J0112+3208 05 10 43 43.4 629.2 3.9 47.0 25 715 11 09 20 11 10 50 =0110+318 05 12 13 43.2 629.5 4.0 47.0 90 727 11 09 21 11 10 50 J0112+3208 05 12 13 43.2 629.5 4.0 47.0 -5 727 No stop 11 14 20 =0110+318 05 15 44 42.7 630.2 4.0 47.0 205 754 11 10 51 11 16 20 J0344+1559 05 17 44 49.9 575.7 1.5 22.1 40 754 11 16 20 11 21 20 =0341+158 05 22 45 49.4 577.4 1.6 23.0 300 792 11 16 21 11 21 20 J0344+1559 05 22 45 49.4 577.4 1.6 23.0 -5 792 No stop 11 22 50 =0341+158 05 24 15 49.3 577.9 1.6 23.3 85 804 11 21 21 11 22 50 0350+177 05 24 15 51.8 576.1 1.5 22.6 -19 804 No stop 11 26 20 --- 05 27 46 51.5 577.4 1.6 23.3 191 831 11 22 51 11 26 20 J0344+1559 05 27 46 48.9 579.1 1.7 24.0 -19 831 No stop 11 27 50 =0341+158 05 29 16 48.8 579.6 1.7 24.2 71 842 11 26 21 11 27 50 0350+177 05 29 16 51.4 577.9 1.6 23.6 -19 842 No stop 11 31 20 --- 05 32 47 51.0 579.1 1.6 24.2 191 869 11 27 51 11 32 00 J0344+1559 05 33 27 48.4 581.0 1.8 25.0 21 869 11 32 00 11 33 30 =0341+158 05 34 57 48.2 581.5 1.8 25.2 90 881 11 32 01 11 33 30 0350+177 05 34 57 50.8 579.9 1.7 24.6 -19 881 No stop 11 37 00 --- 05 38 28 50.5 581.1 1.7 25.3 191 908 11 33 31 11 37 00 J0344+1559 05 38 28 47.8 582.6 1.9 25.8 -19 908 No stop 11 38 30 =0341+158 05 39 58 47.7 583.1 1.9 26.1 71 919 11 37 01 Schedule for BADARY (Code Bd ) Page 5 ET048B 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 ---------------------------------------------------------------------------------------- --- Thu 10 Mar 2022 Day 69 --- 11 38 30 0350+177 05 39 58 50.3 581.6 1.8 25.6 -19 919 No stop 11 42 00 --- 05 43 28 49.9 582.7 1.8 26.2 191 946 11 38 31 11 42 40 J0344+1559 05 44 09 47.2 584.4 2.0 26.8 20 946 11 42 40 11 44 10 =0341+158 05 45 39 47.1 584.9 2.0 27.0 90 958 11 42 41 11 44 10 0350+177 05 45 39 49.7 583.5 1.9 26.6 -19 958 No stop 11 47 40 --- 05 49 09 49.3 584.6 1.9 27.2 191 985 11 44 11 11 47 40 J0344+1559 05 49 09 46.7 586.0 2.1 27.6 -20 985 No stop 11 49 10 =0341+158 05 50 40 46.5 586.5 2.1 27.8 70 996 11 47 41 11 49 10 0350+177 05 50 40 49.2 585.1 1.9 27.4 -19 996 No stop 11 52 40 --- 05 54 10 48.8 586.2 2.0 28.0 191 1023 11 49 11 11 53 20 J0344+1559 05 54 50 46.1 587.7 2.2 28.5 20 1023 11 53 20 11 54 50 =0341+158 05 56 21 45.9 588.2 2.2 28.7 90 1035 11 53 21 11 54 50 0350+177 05 56 21 48.5 586.9 2.0 28.4 -19 1035 No stop 11 58 20 --- 05 59 51 48.1 588.0 2.1 28.9 191 1062 11 54 51 11 58 20 J0344+1559 05 59 51 45.5 589.2 2.2 29.2 -20 1062 No stop 11 59 50 =0341+158 06 01 21 45.3 589.7 2.3 29.4 70 1073 11 58 21 11 59 50 0350+177 06 01 21 48.0 588.5 2.1 29.1 -20 1073 No stop 12 03 20 --- 06 04 52 47.5 589.5 2.2 29.7 190 1100 11 59 51 12 04 00 J0344+1559 06 05 32 44.8 590.9 2.3 30.0 20 1100 12 04 00 12 05 30 =0341+158 06 07 02 44.6 591.4 2.4 30.2 90 1112 12 04 01 12 05 30 0350+177 06 07 02 47.3 590.2 2.2 30.0 -20 1112 No stop 12 09 00 --- 06 10 33 46.9 591.3 2.3 30.5 190 1138 12 05 31 12 09 00 J0344+1559 06 10 33 44.2 592.4 2.4 30.7 -20 1138 No stop 12 10 30 =0341+158 06 12 03 44.0 592.8 2.4 30.9 70 1150 12 09 01 12 10 30 0350+177 06 12 03 46.7 591.7 2.3 30.7 -20 1150 No stop 12 14 00 --- 06 15 34 46.3 592.8 2.4 31.2 190 1177 12 10 31 12 14 40 J0344+1559 06 16 14 43.5 594.0 2.5 31.4 20 1177 12 14 40 12 16 10 =0341+158 06 17 44 43.3 594.4 2.5 31.6 90 1188 12 14 41 12 16 10 0350+177 06 17 44 46.0 593.4 2.4 31.5 -20 1188 No stop 12 19 40 --- 06 21 15 45.6 594.4 2.5 31.9 190 1215 12 16 11 Schedule for BADARY (Code Bd ) Page 6 ET048B 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 ---------------------------------------------------------------------------------------- --- Thu 10 Mar 2022 Day 69 --- 12 19 40 J0344+1559 06 21 15 42.9 595.4 2.6 32.0 -20 1215 No stop 12 21 10 =0341+158 06 22 45 42.7 595.8 2.6 32.2 70 1227 12 19 41 12 21 10 0350+177 06 22 45 45.4 594.8 2.5 32.1 -20 1227 No stop 12 24 40 --- 06 26 15 44.9 595.8 2.5 32.6 190 1254 12 21 11 12 25 20 J0344+1559 06 26 56 42.1 597.0 2.7 32.7 20 1254 12 25 20 12 26 50 =0341+158 06 28 26 41.9 597.4 2.7 32.8 90 1265 12 25 21 12 26 50 0350+177 06 28 26 44.6 596.5 2.6 32.8 -20 1265 No stop 12 30 20 --- 06 31 56 44.2 597.4 2.6 33.3 190 1292 12 26 51 12 30 20 J0344+1559 06 31 56 41.5 598.3 2.8 33.2 -20 1292 No stop 12 31 50 =0341+158 06 33 27 41.3 598.7 2.8 33.4 70 1304 12 30 21 12 31 50 0350+177 06 33 27 44.0 597.9 2.7 33.4 -20 1304 No stop 12 35 20 --- 06 36 57 43.5 598.8 2.7 33.8 190 1331 12 31 51 12 36 00 J0344+1559 06 37 37 40.7 599.8 2.9 33.8 20 1331 12 36 00 12 37 30 =0341+158 06 39 08 40.5 600.2 2.9 34.0 90 1342 12 36 01 12 37 30 0350+177 06 39 08 43.2 599.4 2.7 34.1 -20 1342 No stop 12 41 00 --- 06 42 38 42.8 600.3 2.8 34.4 190 1369 12 37 31 12 41 00 J0344+1559 06 42 38 40.0 601.1 3.0 34.3 -20 1369 No stop 12 42 30 =0341+158 06 44 08 39.8 601.5 3.0 34.5 70 1381 12 41 01 12 42 30 0350+177 06 44 08 42.6 600.7 2.8 34.6 -20 1381 No stop 12 46 00 --- 06 47 39 42.1 601.7 2.9 34.9 190 1408 12 42 31 12 46 40 J0344+1559 06 48 19 39.3 602.6 3.0 34.9 20 1408 12 46 40 12 48 10 =0341+158 06 49 49 39.1 603.0 3.1 35.0 90 1419 12 46 41 12 48 10 0350+177 06 49 49 41.8 602.2 2.9 35.2 -20 1419 No stop 12 51 40 --- 06 53 20 41.3 603.2 3.0 35.5 190 1446 12 48 11 12 51 40 J0344+1559 06 53 20 38.6 603.9 3.1 35.3 -20 1446 No stop 12 53 10 =0341+158 06 54 50 38.4 604.3 3.2 35.5 70 1458 12 51 41 12 53 10 0350+177 06 54 50 41.1 603.5 3.0 35.6 -20 1458 No stop 12 56 40 --- 06 58 21 40.6 604.4 3.1 35.9 190 1485 12 53 11 12 57 20 J0344+1559 06 59 01 37.8 605.3 3.2 35.8 20 1485 12 57 20 12 58 50 =0341+158 07 00 31 37.6 605.7 3.2 35.9 90 1496 12 57 21 Schedule for BADARY (Code Bd ) Page 7 ET048B 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 ---------------------------------------------------------------------------------------- --- Thu 10 Mar 2022 Day 69 --- 12 58 50 J0344+1559 07 00 31 37.6 605.7 3.2 35.9 -5 1496 No stop 13 00 00 =0341+158 07 01 41 37.4 605.9 3.3 36.0 65 1505 12 58 51 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess122.C1024 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: kvzr_c Added by Des Small, 24 February 2012 Setup group: 3 Station: BADARY Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 Net SB= L L U U L L U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= L L U U L L U U IF = A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 12 Setup file default. Used with PCAL = off LO sum= 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 458.49 458.49 458.49 458.49 522.49 522.49 522.49 522.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 12 13 14 Track assignments are: track1= 10, 14, 2, 6, 12, 16, 4, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 0116+319 01 16 47.245342 * 01 19 35.000876 01 20 47.235190 0.00 J0119+3210 31 55 05.83643 * 32 10 50.06197 32 17 43.24396 0.00 From catalog imbedded in main SCHED input file. Titov,ET048B * 0350+177 03 50 00.966044 * 03 52 52.916665 03 54 07.877792 0.00 J0352+1754 17 45 43.68362 * 17 54 36.73124 17 58 29.71015 0.00 From catalog imbedded in main SCHED input file. Titov,ET048B 0110+318 01 10 03.762623 * 01 12 50.333053 01 14 02.020049 0.09 * J0112+3208 31 52 23.76439 * 32 08 17.43262 32 15 14.44864 0.12 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 152 observations. 0202+319 02 02 09.652800 * 02 05 04.925362 02 06 20.670193 0.00 * J0205+3212 31 58 10.39522 * 32 12 30.09544 32 18 48.04475 0.00 J0205+32 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 49141 observations. 0341+158 03 41 33.676026 * 03 44 23.172163 03 45 37.016823 0.05 * J0344+1559 15 50 19.30713 * 15 59 43.36917 16 03 49.23475 0.09 J0344+15 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 503 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 0116+319 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.933 176.426 0350+177 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 1.050 192.736 J0112+3208 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.567 107.988 J0205+3212 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.133 28.000 J0344+1559 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.578 102.742 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) 0116+319 45.9 0350+177 70.4 J0112+3208 44.9 J0205+3212 53.1 J0344+1559 68.0 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