COVER INFORMATION Station: CAMBG32M (Code Cm ) 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 CAMBG32M (Code Cm ) 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 42 20 30.2 435.0 -5.4 -44.5 0 0 09 30 00 09 38 00 =0202+319 20 50 21 31.4 436.4 -5.3 -44.9 480 31 09 30 01 09 39 00 J0112+3208 20 51 21 39.4 446.1 -4.4 -46.4 19 31 09 39 00 09 44 00 =0110+318 20 56 22 40.2 447.1 -4.3 -46.4 300 50 09 39 01 09 44 00 J0112+3208 20 56 22 40.2 447.1 -4.3 -46.4 -2 50 No stop 09 45 30 =0110+318 20 57 52 40.4 447.4 -4.3 -46.4 88 56 09 44 01 09 45 30 0116+319 20 57 52 39.4 446.0 -4.4 -46.4 -16 56 No stop 09 49 00 --- 21 01 23 40.0 446.7 -4.3 -46.4 194 70 09 45 31 09 49 00 J0112+3208 21 01 23 41.0 448.0 -4.2 -46.5 -17 70 No stop 09 50 30 =0110+318 21 02 53 41.2 448.3 -4.2 -46.5 73 75 09 49 01 09 50 30 0116+319 21 02 53 40.2 447.0 -4.3 -46.4 -16 75 No stop 09 54 00 --- 21 06 23 40.7 447.7 -4.2 -46.5 194 89 09 50 31 09 54 40 J0112+3208 21 07 04 41.8 449.1 -4.1 -46.5 23 89 09 54 40 09 56 10 =0110+318 21 08 34 42.1 449.4 -4.1 -46.5 90 95 09 54 41 09 56 10 0116+319 21 08 34 41.1 448.1 -4.2 -46.5 -16 95 No stop 09 59 40 --- 21 12 04 41.6 448.8 -4.1 -46.5 194 108 09 56 11 09 59 40 J0112+3208 21 12 04 42.6 450.1 -4.0 -46.5 -17 108 No stop 10 01 10 =0110+318 21 13 35 42.8 450.4 -4.0 -46.5 73 114 09 59 41 10 01 10 0116+319 21 13 35 41.8 449.1 -4.1 -46.5 -16 114 No stop 10 04 40 --- 21 17 05 42.4 449.7 -4.1 -46.5 194 128 10 01 11 10 05 20 J0112+3208 21 17 45 43.5 451.3 -3.9 -46.5 23 128 10 05 20 10 06 50 =0110+318 21 19 16 43.7 451.6 -3.9 -46.5 90 133 10 05 21 10 06 50 0116+319 21 19 16 42.7 450.2 -4.0 -46.5 -16 133 No stop 10 10 20 --- 21 22 46 43.2 450.9 -4.0 -46.5 194 147 10 06 51 10 10 20 J0112+3208 21 22 46 44.2 452.3 -3.9 -46.4 -17 147 No stop 10 11 50 =0110+318 21 24 16 44.5 452.6 -3.8 -46.4 73 153 10 10 21 10 11 50 0116+319 21 24 16 43.5 451.2 -3.9 -46.5 -16 153 No stop 10 15 20 --- 21 27 47 44.0 451.9 -3.9 -46.5 194 166 10 11 51 Schedule for CAMBG32M (Code Cm ) 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 28 27 45.1 453.4 -3.8 -46.4 23 166 10 16 00 10 17 30 =0110+318 21 29 57 45.3 453.8 -3.7 -46.4 90 172 10 16 01 10 17 30 0116+319 21 29 57 44.3 452.3 -3.8 -46.5 -17 172 No stop 10 21 00 --- 21 33 28 44.9 453.0 -3.8 -46.4 193 185 10 17 31 10 21 00 J0112+3208 21 33 28 45.9 454.5 -3.7 -46.3 -17 185 No stop 10 22 30 =0110+318 21 34 58 46.1 454.8 -3.7 -46.3 73 191 10 21 01 10 22 30 0116+319 21 34 58 45.1 453.3 -3.8 -46.4 -17 191 No stop 10 26 00 --- 21 38 29 45.6 454.1 -3.7 -46.4 193 205 10 22 31 10 26 40 J0112+3208 21 39 09 46.8 455.7 -3.6 -46.2 23 205 10 26 40 10 28 10 =0110+318 21 40 39 47.0 456.0 -3.6 -46.2 90 211 10 26 41 10 28 10 0116+319 21 40 39 46.0 454.5 -3.7 -46.3 -17 211 No stop 10 31 40 --- 21 44 10 46.5 455.3 -3.6 -46.3 193 224 10 28 11 10 31 40 J0112+3208 21 44 10 47.5 456.8 -3.5 -46.1 -17 224 No stop 10 33 10 =0110+318 21 45 40 47.7 457.1 -3.5 -46.0 73 230 10 31 41 10 33 10 0116+319 21 45 40 46.7 455.6 -3.6 -46.2 -17 230 No stop 10 36 40 --- 21 49 10 47.3 456.3 -3.5 -46.2 193 243 10 33 11 10 37 20 J0112+3208 21 49 51 48.4 458.0 -3.4 -45.9 22 243 10 37 20 10 38 50 =0110+318 21 51 21 48.6 458.3 -3.4 -45.9 90 249 10 37 21 10 38 50 0116+319 21 51 21 47.6 456.8 -3.5 -46.1 -17 249 No stop 10 42 20 --- 21 54 51 48.1 457.6 -3.4 -46.0 193 263 10 38 51 10 42 20 J0112+3208 21 54 51 49.1 459.1 -3.3 -45.7 -18 263 No stop 10 43 50 =0110+318 21 56 22 49.4 459.5 -3.3 -45.7 72 269 10 42 21 10 43 50 0116+319 21 56 22 48.4 457.9 -3.4 -45.9 -17 269 No stop 10 47 20 --- 21 59 52 48.9 458.7 -3.3 -45.8 193 282 10 43 51 10 48 00 J0112+3208 22 00 32 50.0 460.4 -3.2 -45.5 22 282 10 48 00 10 49 30 =0110+318 22 02 03 50.2 460.8 -3.2 -45.4 90 288 10 48 01 10 49 30 0116+319 22 02 03 49.2 459.2 -3.3 -45.8 -17 288 No stop 10 53 00 --- 22 05 33 49.8 460.0 -3.3 -45.6 193 301 10 49 31 10 53 00 J0112+3208 22 05 33 50.8 461.6 -3.1 -45.3 -18 301 No stop 10 54 30 =0110+318 22 07 03 51.0 462.0 -3.1 -45.2 72 307 10 53 01 Schedule for CAMBG32M (Code Cm ) 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 22 07 03 50.0 460.3 -3.2 -45.5 -17 307 No stop 10 58 00 --- 22 10 34 50.5 461.1 -3.2 -45.4 193 321 10 54 31 10 58 40 J0112+3208 22 11 14 51.6 462.9 -3.0 -45.0 22 321 10 58 40 11 00 10 =0110+318 22 12 44 51.8 463.3 -3.0 -44.9 90 327 10 58 41 11 00 10 0116+319 22 12 44 50.9 461.7 -3.1 -45.3 -18 327 No stop 11 03 40 --- 22 16 15 51.4 462.5 -3.1 -45.1 192 340 11 00 11 11 03 40 J0112+3208 22 16 15 52.4 464.2 -3.0 -44.7 -18 340 No stop 11 05 10 =0110+318 22 17 45 52.6 464.5 -2.9 -44.6 72 346 11 03 41 11 05 10 0116+319 22 17 45 51.6 462.8 -3.1 -45.0 -18 346 No stop 11 08 40 --- 22 21 16 52.1 463.7 -3.0 -44.8 192 359 11 05 11 11 09 20 J0112+3208 22 21 56 53.2 465.6 -2.9 -44.3 21 359 11 09 20 11 10 50 =0110+318 22 23 26 53.4 466.0 -2.8 -44.2 90 365 11 09 21 11 10 50 J0112+3208 22 23 26 53.4 466.0 -2.8 -44.2 -2 365 No stop 11 14 20 =0110+318 22 26 57 53.9 466.9 -2.8 -44.0 208 379 11 10 51 11 16 20 J0344+1559 22 28 57 19.2 448.4 -5.3 -39.6 -1 379 11 16 20 11 21 20 =0341+158 22 33 58 20.0 449.3 -5.2 -39.7 299 398 11 16 21 11 21 20 J0344+1559 22 33 58 20.0 449.3 -5.2 -39.7 -2 398 No stop 11 22 50 =0341+158 22 35 28 20.2 449.6 -5.2 -39.7 88 404 11 21 21 11 22 50 0350+177 22 35 28 20.4 446.7 -5.3 -40.1 -23 404 No stop 11 26 20 --- 22 38 59 20.9 447.3 -5.3 -40.1 187 417 11 22 51 11 26 20 J0344+1559 22 38 59 20.8 450.3 -5.1 -39.7 -24 417 No stop 11 27 50 =0341+158 22 40 29 21.0 450.6 -5.1 -39.7 66 423 11 26 21 11 27 50 0350+177 22 40 29 21.2 447.6 -5.2 -40.1 -23 423 No stop 11 31 20 --- 22 43 59 21.7 448.3 -5.2 -40.1 187 437 11 27 51 11 32 00 J0344+1559 22 44 40 21.6 451.5 -5.0 -39.6 16 437 11 32 00 11 33 30 =0341+158 22 46 10 21.9 451.8 -5.0 -39.6 90 442 11 32 01 11 33 30 0350+177 22 46 10 22.0 448.8 -5.1 -40.1 -23 442 No stop 11 37 00 --- 22 49 40 22.6 449.4 -5.1 -40.2 187 456 11 33 31 11 37 00 J0344+1559 22 49 40 22.4 452.5 -4.9 -39.6 -24 456 No stop 11 38 30 =0341+158 22 51 11 22.6 452.8 -4.9 -39.6 66 462 11 37 01 Schedule for CAMBG32M (Code Cm ) 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 51 11 22.8 449.7 -5.0 -40.2 -23 462 No stop 11 42 00 --- 22 54 41 23.3 450.4 -5.0 -40.2 187 475 11 38 31 11 42 40 J0344+1559 22 55 21 23.3 453.6 -4.8 -39.6 16 475 11 42 40 11 44 10 =0341+158 22 56 52 23.5 453.9 -4.8 -39.6 90 481 11 42 41 11 44 10 0350+177 22 56 52 23.7 450.9 -5.0 -40.1 -23 481 No stop 11 47 40 --- 23 00 22 24.2 451.6 -4.9 -40.1 187 495 11 44 11 11 47 40 J0344+1559 23 00 22 24.0 454.6 -4.8 -39.5 -24 495 No stop 11 49 10 =0341+158 23 01 52 24.3 454.9 -4.7 -39.5 66 500 11 47 41 11 49 10 0350+177 23 01 52 24.4 451.9 -4.9 -40.1 -23 500 No stop 11 52 40 --- 23 05 23 25.0 452.6 -4.8 -40.1 187 514 11 49 11 11 53 20 J0344+1559 23 06 03 24.9 455.8 -4.7 -39.4 16 514 11 53 20 11 54 50 =0341+158 23 07 33 25.1 456.1 -4.6 -39.4 90 520 11 53 21 11 54 50 0350+177 23 07 33 25.3 453.0 -4.8 -40.1 -24 520 No stop 11 58 20 --- 23 11 04 25.8 453.7 -4.7 -40.1 186 533 11 54 51 11 58 20 J0344+1559 23 11 04 25.7 456.8 -4.6 -39.3 -24 533 No stop 11 59 50 =0341+158 23 12 34 25.9 457.1 -4.6 -39.3 66 539 11 58 21 11 59 50 0350+177 23 12 34 26.1 454.0 -4.7 -40.0 -24 539 No stop 12 03 20 --- 23 16 05 26.6 454.7 -4.6 -40.0 186 553 11 59 51 12 04 00 J0344+1559 23 16 45 26.5 458.0 -4.5 -39.2 16 553 12 04 00 12 05 30 =0341+158 23 18 15 26.8 458.3 -4.5 -39.2 90 558 12 04 01 12 05 30 0350+177 23 18 15 26.9 455.2 -4.6 -40.0 -24 558 No stop 12 09 00 --- 23 21 46 27.5 455.9 -4.5 -39.9 186 572 12 05 31 12 09 00 J0344+1559 23 21 46 27.3 459.0 -4.4 -39.1 -24 572 No stop 12 10 30 =0341+158 23 23 16 27.5 459.3 -4.4 -39.0 66 578 12 09 01 12 10 30 0350+177 23 23 16 27.7 456.2 -4.5 -39.9 -24 578 No stop 12 14 00 --- 23 26 46 28.2 456.9 -4.5 -39.8 186 591 12 10 31 12 14 40 J0344+1559 23 27 27 28.2 460.2 -4.3 -38.9 16 591 12 14 40 12 16 10 =0341+158 23 28 57 28.4 460.5 -4.3 -38.9 90 597 12 14 41 12 16 10 0350+177 23 28 57 28.6 457.4 -4.4 -39.8 -24 597 No stop 12 19 40 --- 23 32 27 29.1 458.1 -4.4 -39.7 186 611 12 16 11 Schedule for CAMBG32M (Code Cm ) 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 32 27 28.9 461.3 -4.2 -38.8 -24 611 No stop 12 21 10 =0341+158 23 33 58 29.1 461.6 -4.2 -38.7 66 616 12 19 41 12 21 10 0350+177 23 33 58 29.3 458.4 -4.3 -39.6 -24 616 No stop 12 24 40 --- 23 37 28 29.9 459.2 -4.3 -39.5 186 630 12 21 11 12 25 20 J0344+1559 23 38 08 29.8 462.5 -4.1 -38.5 16 630 12 25 20 12 26 50 =0341+158 23 39 39 30.0 462.8 -4.1 -38.5 90 636 12 25 21 12 26 50 0350+177 23 39 39 30.2 459.6 -4.2 -39.5 -24 636 No stop 12 30 20 --- 23 43 09 30.7 460.4 -4.2 -39.4 186 649 12 26 51 12 30 20 J0344+1559 23 43 09 30.5 463.6 -4.0 -38.3 -25 649 No stop 12 31 50 =0341+158 23 44 39 30.7 463.9 -4.0 -38.3 65 655 12 30 21 12 31 50 0350+177 23 44 39 31.0 460.7 -4.2 -39.3 -24 655 No stop 12 35 20 --- 23 48 10 31.5 461.4 -4.1 -39.2 186 669 12 31 51 12 36 00 J0344+1559 23 48 50 31.4 464.9 -3.9 -38.1 15 669 12 36 00 12 37 30 =0341+158 23 50 20 31.6 465.2 -3.9 -38.0 90 674 12 36 01 12 37 30 0350+177 23 50 20 31.8 461.9 -4.1 -39.1 -24 674 No stop 12 41 00 --- 23 53 51 32.3 462.7 -4.0 -39.0 186 688 12 37 31 12 41 00 J0344+1559 23 53 51 32.1 466.0 -3.9 -37.9 -25 688 No stop 12 42 30 =0341+158 23 55 21 32.3 466.3 -3.8 -37.8 65 694 12 41 01 12 42 30 0350+177 23 55 21 32.6 463.0 -4.0 -38.9 -24 694 No stop 12 46 00 --- 23 58 52 33.1 463.8 -3.9 -38.8 186 707 12 42 31 12 46 40 J0344+1559 23 59 32 32.9 467.3 -3.8 -37.6 15 707 12 46 40 12 48 10 =0341+158 00 01 02 33.2 467.6 -3.7 -37.5 90 713 12 46 41 12 48 10 0350+177 00 01 02 33.4 464.3 -3.9 -38.7 -24 713 No stop 12 51 40 --- 00 04 33 33.9 465.1 -3.8 -38.5 186 727 12 48 11 12 51 40 J0344+1559 00 04 33 33.7 468.4 -3.7 -37.3 -25 727 No stop 12 53 10 =0341+158 00 06 03 33.9 468.7 -3.7 -37.2 65 732 12 51 41 12 53 10 0350+177 00 06 03 34.1 465.4 -3.8 -38.4 -24 732 No stop 12 56 40 --- 00 09 33 34.7 466.2 -3.7 -38.3 186 746 12 53 11 12 57 20 J0344+1559 00 10 14 34.5 469.7 -3.6 -36.9 15 746 12 57 20 12 58 50 =0341+158 00 11 44 34.7 470.1 -3.6 -36.8 90 752 12 57 21 Schedule for CAMBG32M (Code Cm ) 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 11 44 34.7 470.1 -3.6 -36.8 -2 752 No stop 13 00 00 =0341+158 00 12 54 34.9 470.3 -3.5 -36.8 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: 17 Station: CAMBG32M 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