COVER INFORMATION Station: PICKMERE (Code Pi ) 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 PICKMERE (Code Pi ) 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 Next BBC frequencies: 705.51 705.51 Next scan bandwidths: 64.00 64.00 09 30 00 J0205+3212 20 32 24 29.1 73.9 -5.6 -42.8 0 0 09 30 00 09 38 00 =0202+319 20 40 25 30.2 75.3 -5.4 -43.2 480 31 09 30 01 09 39 00 J0112+3208 20 41 25 38.0 85.1 -4.5 -44.8 8 31 09 39 00 09 44 00 =0110+318 20 46 26 38.8 86.1 -4.5 -44.8 300 50 09 39 01 09 44 00 J0112+3208 20 46 26 38.8 86.1 -4.5 -44.8 -2 50 No stop 09 45 30 =0110+318 20 47 56 39.0 86.4 -4.4 -44.9 88 56 09 44 01 09 45 30 0116+319 20 47 56 38.0 85.1 -4.5 -44.8 -20 56 No stop 09 49 00 --- 20 51 27 38.5 85.7 -4.5 -44.8 190 70 09 45 31 09 49 00 J0112+3208 20 51 27 39.5 87.1 -4.4 -44.9 -21 70 No stop 09 50 30 =0110+318 20 52 57 39.7 87.4 -4.4 -44.9 69 75 09 49 01 09 50 30 0116+319 20 52 57 38.8 86.0 -4.5 -44.9 -20 75 No stop 09 54 00 --- 20 56 28 39.3 86.7 -4.4 -44.9 190 89 09 50 31 09 54 40 J0112+3208 20 57 08 40.4 88.2 -4.3 -45.0 19 89 09 54 40 09 56 10 =0110+318 20 58 38 40.6 88.5 -4.3 -45.0 90 95 09 54 41 09 56 10 0116+319 20 58 38 39.6 87.1 -4.4 -44.9 -20 95 No stop 09 59 40 --- 21 02 09 40.1 87.8 -4.3 -45.0 190 108 09 56 11 09 59 40 J0112+3208 21 02 09 41.1 89.2 -4.2 -45.0 -21 108 No stop 10 01 10 =0110+318 21 03 39 41.3 89.5 -4.2 -45.0 69 114 09 59 41 10 01 10 0116+319 21 03 39 40.4 88.1 -4.3 -45.0 -20 114 No stop 10 04 40 --- 21 07 09 40.9 88.8 -4.2 -45.0 190 128 10 01 11 10 05 20 J0112+3208 21 07 50 42.0 90.3 -4.1 -45.0 19 128 10 05 20 10 06 50 =0110+318 21 09 20 42.2 90.6 -4.1 -45.0 90 133 10 05 21 10 06 50 0116+319 21 09 20 41.2 89.2 -4.2 -45.0 -20 133 No stop 10 10 20 --- 21 12 50 41.7 89.9 -4.1 -45.0 190 147 10 06 51 10 10 20 J0112+3208 21 12 50 42.7 91.3 -4.0 -45.0 -21 147 No stop 10 11 50 =0110+318 21 14 21 42.9 91.6 -4.0 -45.0 69 153 10 10 21 10 11 50 0116+319 21 14 21 42.0 90.2 -4.1 -45.0 -20 153 No stop 10 15 20 --- 21 17 51 42.5 90.9 -4.0 -45.0 190 166 10 11 51 Schedule for PICKMERE (Code Pi ) 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 21 18 31 43.6 92.5 -3.9 -44.9 19 166 10 16 00 10 17 30 =0110+318 21 20 02 43.8 92.8 -3.9 -44.9 90 172 10 16 01 10 17 30 0116+319 21 20 02 42.8 91.4 -4.0 -45.0 -20 172 No stop 10 21 00 --- 21 23 32 43.3 92.1 -4.0 -45.0 190 185 10 17 31 10 21 00 J0112+3208 21 23 32 44.3 93.5 -3.8 -44.9 -21 185 No stop 10 22 30 =0110+318 21 25 02 44.5 93.8 -3.8 -44.9 69 191 10 21 01 10 22 30 0116+319 21 25 02 43.6 92.4 -3.9 -45.0 -21 191 No stop 10 26 00 --- 21 28 33 44.1 93.1 -3.9 -44.9 189 205 10 22 31 10 26 40 J0112+3208 21 29 13 45.2 94.7 -3.7 -44.8 18 205 10 26 40 10 28 10 =0110+318 21 30 43 45.4 95.0 -3.7 -44.8 90 211 10 26 41 10 28 10 0116+319 21 30 43 44.4 93.6 -3.8 -44.9 -21 211 No stop 10 31 40 --- 21 34 14 44.9 94.3 -3.8 -44.8 189 224 10 28 11 10 31 40 J0112+3208 21 34 14 45.9 95.8 -3.7 -44.7 -22 224 No stop 10 33 10 =0110+318 21 35 44 46.1 96.1 -3.6 -44.7 68 230 10 31 41 10 33 10 0116+319 21 35 44 45.1 94.6 -3.8 -44.8 -21 230 No stop 10 36 40 --- 21 39 15 45.7 95.4 -3.7 -44.8 189 243 10 33 11 10 37 20 J0112+3208 21 39 55 46.7 97.0 -3.6 -44.6 18 243 10 37 20 10 38 50 =0110+318 21 41 25 47.0 97.4 -3.5 -44.5 90 249 10 37 21 10 38 50 0116+319 21 41 25 46.0 95.9 -3.7 -44.7 -21 249 No stop 10 42 20 --- 21 44 56 46.5 96.6 -3.6 -44.6 189 263 10 38 51 10 42 20 J0112+3208 21 44 56 47.5 98.1 -3.5 -44.4 -22 263 No stop 10 43 50 =0110+318 21 46 26 47.7 98.5 -3.5 -44.4 68 269 10 42 21 10 43 50 0116+319 21 46 26 46.7 96.9 -3.6 -44.6 -21 269 No stop 10 47 20 --- 21 49 56 47.3 97.7 -3.5 -44.5 189 282 10 43 51 10 48 00 J0112+3208 21 50 37 48.3 99.4 -3.4 -44.2 18 282 10 48 00 10 49 30 =0110+318 21 52 07 48.5 99.8 -3.4 -44.2 90 288 10 48 01 10 49 30 0116+319 21 52 07 47.6 98.2 -3.5 -44.4 -21 288 No stop 10 53 00 --- 21 55 37 48.1 99.0 -3.4 -44.3 189 301 10 49 31 10 53 00 J0112+3208 21 55 37 49.1 100.6 -3.3 -44.0 -22 301 No stop 10 54 30 =0110+318 21 57 08 49.3 100.9 -3.3 -43.9 68 307 10 53 01 Schedule for PICKMERE (Code Pi ) 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 21 57 08 48.3 99.3 -3.4 -44.3 -22 307 No stop 10 58 00 --- 22 00 38 48.8 100.1 -3.3 -44.1 188 321 10 54 31 10 58 40 J0112+3208 22 01 18 49.9 101.9 -3.2 -43.8 17 321 10 58 40 11 00 10 =0110+318 22 02 49 50.1 102.3 -3.2 -43.7 90 327 10 58 41 11 00 10 0116+319 22 02 49 49.2 100.6 -3.3 -44.0 -22 327 No stop 11 03 40 --- 22 06 19 49.7 101.5 -3.2 -43.9 188 340 11 00 11 11 03 40 J0112+3208 22 06 19 50.6 103.1 -3.1 -43.5 -23 340 No stop 11 05 10 =0110+318 22 07 49 50.8 103.5 -3.1 -43.4 67 346 11 03 41 11 05 10 0116+319 22 07 49 49.9 101.8 -3.2 -43.8 -22 346 No stop 11 08 40 --- 22 11 20 50.4 102.7 -3.2 -43.6 188 359 11 05 11 11 09 20 J0112+3208 22 12 00 51.5 104.5 -3.0 -43.2 17 359 11 09 20 11 10 50 =0110+318 22 13 30 51.7 104.9 -3.0 -43.1 90 365 11 09 21 11 10 50 J0112+3208 22 13 30 51.7 104.9 -3.0 -43.1 -2 365 No stop 11 14 20 =0110+318 22 17 01 52.2 105.8 -3.0 -42.9 208 379 11 10 51 11 16 20 J0344+1559 22 19 01 17.8 86.8 -5.4 -38.4 -6 379 11 16 20 11 21 20 =0341+158 22 24 02 18.5 87.8 -5.4 -38.4 294 398 11 16 21 11 21 20 J0344+1559 22 24 02 18.5 87.8 -5.4 -38.4 -2 398 No stop 11 22 50 =0341+158 22 25 32 18.7 88.1 -5.3 -38.4 88 404 11 21 21 11 22 50 0350+177 22 25 32 19.0 85.1 -5.5 -38.8 -29 404 No stop 11 26 20 --- 22 29 03 19.5 85.8 -5.4 -38.8 181 417 11 22 51 11 26 20 J0344+1559 22 29 03 19.3 88.8 -5.3 -38.5 -30 417 No stop 11 27 50 =0341+158 22 30 33 19.5 89.1 -5.3 -38.5 60 423 11 26 21 11 27 50 0350+177 22 30 33 19.7 86.1 -5.4 -38.8 -29 423 No stop 11 31 20 --- 22 34 04 20.2 86.8 -5.3 -38.9 181 437 11 27 51 11 32 00 J0344+1559 22 34 44 20.1 89.9 -5.2 -38.5 10 437 11 32 00 11 33 30 =0341+158 22 36 14 20.3 90.2 -5.2 -38.5 90 442 11 32 01 11 33 30 0350+177 22 36 14 20.6 87.2 -5.3 -38.9 -29 442 No stop 11 37 00 --- 22 39 45 21.1 87.9 -5.2 -38.9 181 456 11 33 31 11 37 00 J0344+1559 22 39 45 20.9 90.9 -5.1 -38.5 -30 456 No stop 11 38 30 =0341+158 22 41 15 21.1 91.2 -5.1 -38.5 60 462 11 37 01 Schedule for PICKMERE (Code Pi ) 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 22 41 15 21.3 88.2 -5.2 -38.9 -29 462 No stop 11 42 00 --- 22 44 45 21.8 88.9 -5.2 -38.9 181 475 11 38 31 11 42 40 J0344+1559 22 45 26 21.7 92.1 -5.0 -38.4 10 475 11 42 40 11 44 10 =0341+158 22 46 56 21.9 92.4 -5.0 -38.4 90 481 11 42 41 11 44 10 0350+177 22 46 56 22.2 89.4 -5.1 -38.9 -29 481 No stop 11 47 40 --- 22 50 26 22.7 90.1 -5.1 -38.9 181 495 11 44 11 11 47 40 J0344+1559 22 50 26 22.5 93.1 -4.9 -38.4 -30 495 No stop 11 49 10 =0341+158 22 51 57 22.7 93.4 -4.9 -38.4 60 500 11 47 41 11 49 10 0350+177 22 51 57 22.9 90.4 -5.0 -38.9 -29 500 No stop 11 52 40 --- 22 55 27 23.4 91.1 -5.0 -38.9 181 514 11 49 11 11 53 20 J0344+1559 22 56 07 23.3 94.2 -4.8 -38.3 10 514 11 53 20 11 54 50 =0341+158 22 57 38 23.5 94.5 -4.8 -38.3 90 520 11 53 21 11 54 50 0350+177 22 57 38 23.8 91.5 -4.9 -38.9 -29 520 No stop 11 58 20 --- 23 01 08 24.3 92.2 -4.9 -38.9 181 533 11 54 51 11 58 20 J0344+1559 23 01 08 24.1 95.3 -4.7 -38.3 -30 533 No stop 11 59 50 =0341+158 23 02 38 24.3 95.6 -4.7 -38.3 60 539 11 58 21 11 59 50 0350+177 23 02 38 24.5 92.5 -4.9 -38.9 -29 539 No stop 12 03 20 --- 23 06 09 25.0 93.2 -4.8 -38.9 181 553 11 59 51 12 04 00 J0344+1559 23 06 49 24.9 96.4 -4.6 -38.2 10 553 12 04 00 12 05 30 =0341+158 23 08 19 25.1 96.8 -4.6 -38.2 90 558 12 04 01 12 05 30 0350+177 23 08 19 25.4 93.7 -4.8 -38.8 -29 558 No stop 12 09 00 --- 23 11 50 25.9 94.4 -4.7 -38.8 181 572 12 05 31 12 09 00 J0344+1559 23 11 50 25.6 97.5 -4.6 -38.1 -30 572 No stop 12 10 30 =0341+158 23 13 20 25.9 97.8 -4.5 -38.0 60 578 12 09 01 12 10 30 0350+177 23 13 20 26.1 94.7 -4.7 -38.8 -29 578 No stop 12 14 00 --- 23 16 51 26.6 95.4 -4.6 -38.7 181 591 12 10 31 12 14 40 J0344+1559 23 17 31 26.5 98.7 -4.5 -37.9 10 591 12 14 40 12 16 10 =0341+158 23 19 01 26.7 99.0 -4.4 -37.9 90 597 12 14 41 12 16 10 0350+177 23 19 01 26.9 95.9 -4.6 -38.7 -29 597 No stop 12 19 40 --- 23 22 32 27.5 96.6 -4.5 -38.6 181 611 12 16 11 Schedule for PICKMERE (Code Pi ) 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 23 22 32 27.2 99.8 -4.4 -37.8 -30 611 No stop 12 21 10 =0341+158 23 24 02 27.5 100.1 -4.4 -37.8 60 616 12 19 41 12 21 10 0350+177 23 24 02 27.7 96.9 -4.5 -38.6 -30 616 No stop 12 24 40 --- 23 27 32 28.2 97.7 -4.4 -38.5 180 630 12 21 11 12 25 20 J0344+1559 23 28 13 28.1 101.0 -4.3 -37.6 9 630 12 25 20 12 26 50 =0341+158 23 29 43 28.3 101.3 -4.3 -37.6 90 636 12 25 21 12 26 50 0350+177 23 29 43 28.5 98.1 -4.4 -38.5 -30 636 No stop 12 30 20 --- 23 33 13 29.1 98.9 -4.3 -38.4 180 649 12 26 51 12 30 20 J0344+1559 23 33 13 28.8 102.1 -4.2 -37.5 -31 649 No stop 12 31 50 =0341+158 23 34 44 29.0 102.4 -4.2 -37.4 59 655 12 30 21 12 31 50 0350+177 23 34 44 29.3 99.2 -4.3 -38.3 -30 655 No stop 12 35 20 --- 23 38 14 29.8 100.0 -4.3 -38.2 180 669 12 31 51 12 36 00 J0344+1559 23 38 54 29.6 103.3 -4.1 -37.3 9 669 12 36 00 12 37 30 =0341+158 23 40 25 29.8 103.6 -4.1 -37.2 90 674 12 36 01 12 37 30 0350+177 23 40 25 30.1 100.4 -4.2 -38.2 -30 674 No stop 12 41 00 --- 23 43 55 30.6 101.2 -4.2 -38.1 180 688 12 37 31 12 41 00 J0344+1559 23 43 55 30.4 104.4 -4.0 -37.0 -31 688 No stop 12 42 30 =0341+158 23 45 25 30.6 104.7 -4.0 -37.0 59 694 12 41 01 12 42 30 0350+177 23 45 25 30.8 101.5 -4.1 -38.0 -30 694 No stop 12 46 00 --- 23 48 56 31.4 102.3 -4.1 -37.9 180 707 12 42 31 12 46 40 J0344+1559 23 49 36 31.2 105.7 -3.9 -36.8 9 707 12 46 40 12 48 10 =0341+158 23 51 06 31.4 106.0 -3.9 -36.7 90 713 12 46 41 12 48 10 0350+177 23 51 06 31.7 102.8 -4.1 -37.8 -30 713 No stop 12 51 40 --- 23 54 37 32.2 103.5 -4.0 -37.7 180 727 12 48 11 12 51 40 J0344+1559 23 54 37 31.9 106.8 -3.9 -36.5 -31 727 No stop 12 53 10 =0341+158 23 56 07 32.1 107.2 -3.8 -36.5 59 732 12 51 41 12 53 10 0350+177 23 56 07 32.4 103.9 -4.0 -37.6 -30 732 No stop 12 56 40 --- 23 59 38 32.9 104.7 -3.9 -37.4 180 746 12 53 11 12 57 20 J0344+1559 00 00 18 32.7 108.1 -3.8 -36.2 9 746 12 57 20 12 58 50 =0341+158 00 01 48 32.9 108.5 -3.7 -36.2 90 752 12 57 21 Schedule for PICKMERE (Code Pi ) 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 00 01 48 32.9 108.5 -3.7 -36.2 -2 752 No stop 13 00 00 =0341+158 00 02 58 33.1 108.7 -3.7 -36.1 68 756 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 --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 20 Station: PICKMERE Total bit rate: 512 Format: VDIF Bits per sample: 2 Sample rate:128.000 Number of channels: 2 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 5664.00 5664.00 Net SB= U U IF SB = L L Pol. = RCP LCP BBC = 1 9 BBC SB= L L IF = A1 B1 The following frequency sets based on these setups were used. Frequency Set: 17 Setup file default. Used with PCAL = off LO sum= 4958.49 4958.49 BBC fr= 705.51 705.51 Bandwd= 64.00 64.00 Matching frequency sets: 17 18 19 20 21 Track assignments are: track1= 1, 2 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