COVER INFORMATION Station: WSTRBORK (Code Wb ) Experiment: Tracing the Radio Outflows in RQ AGN from Pc- to Kpc-scales Exp. Code: EG131C Schedule Version: 1.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Salmoli Ghosh Address: National Centre for Radio Astrophysics - TIFR S.P. Pune Univ. Campus, Ganeshkhind Pune India : 411007 Phone: (+91)020-25719000 EMAIL: salmoli.ghosh@gmail.com Fax: Phone during observation: (+91)8240982699/(+91)020-25719230 Observing mode: Phase-referencing continuum Notes: PCAL OFF Schedule for WSTRBORK (Code Wb ) Page 2 Tracing the Radio Outflows in RQ AGN from Pc- to Kpc-scales 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 ---------------------------------------------------------------------------------------- --- Tue 28 May 2024 Day 149 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 379.49 379.49 379.49 379.49 443.49 443.49 443.49 443.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 09 30 00 3C84 02 22 03 74.9 132.6 -1.0 0.0 0 0 09 30 00 09 35 00 --- 02 27 04 75.5 135.6 -0.9 0.0 300 39 09 30 01 09 40 00 J0119+3210 02 32 05 65.7 218.9 1.2 0.0 185 39 09 40 00 09 46 00 =0116+319 02 38 06 65.1 221.6 1.3 0.0 360 85 09 40 01 09 46 00 MRK993 02 38 06 65.7 218.9 1.2 0.0 -18 85 No stop 09 49 30 --- 02 41 36 65.3 220.5 1.2 0.0 192 112 09 46 01 09 50 00 J0119+3210 02 42 06 64.7 223.4 1.4 0.0 12 112 09 50 00 09 51 00 =0116+319 02 43 06 64.6 223.8 1.4 0.0 60 120 09 50 01 09 51 00 MRK993 02 43 06 65.2 221.2 1.3 0.0 -18 120 No stop 09 54 30 --- 02 46 37 64.8 222.7 1.3 0.0 192 147 09 51 01 09 54 30 J0119+3210 02 46 37 64.3 225.3 1.4 0.0 -18 147 No stop 09 56 00 =0116+319 02 48 07 64.1 225.9 1.5 0.0 72 158 09 54 31 09 56 00 MRK993 02 48 07 64.7 223.4 1.4 0.0 -18 158 No stop 09 59 30 --- 02 51 38 64.3 224.9 1.4 0.0 192 185 09 56 01 10 00 00 J0119+3210 02 52 08 63.7 227.6 1.5 0.0 12 185 10 00 00 10 01 00 =0116+319 02 53 08 63.5 228.0 1.5 0.0 60 193 10 00 01 10 01 00 MRK993 02 53 08 64.2 225.5 1.4 0.0 -18 193 No stop 10 04 30 --- 02 56 39 63.8 226.9 1.5 0.0 192 220 10 01 01 10 04 30 J0119+3210 02 56 39 63.1 229.4 1.6 0.0 -18 220 No stop 10 06 00 =0116+319 02 58 09 63.0 230.0 1.6 0.0 72 232 10 04 31 10 06 00 MRK993 02 58 09 63.6 227.6 1.5 0.0 -18 232 No stop 10 09 30 --- 03 01 39 63.2 229.0 1.6 0.0 192 259 10 06 01 10 10 00 J0119+3210 03 02 10 62.5 231.5 1.7 0.0 12 259 10 10 00 10 11 00 =0116+319 03 03 10 62.4 231.9 1.7 0.0 60 267 10 10 01 10 11 00 MRK993 03 03 10 63.0 229.6 1.6 0.0 -18 267 No stop 10 14 30 --- 03 06 40 62.6 230.9 1.7 0.0 192 294 10 11 01 10 14 30 J0119+3210 03 06 40 62.0 233.2 1.8 0.0 -18 294 No stop 10 16 00 =0116+319 03 08 11 61.8 233.8 1.8 0.0 72 305 10 14 31 Schedule for WSTRBORK (Code Wb ) Page 3 Tracing the Radio Outflows in RQ AGN from Pc- to Kpc-scales 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 ---------------------------------------------------------------------------------------- --- Tue 28 May 2024 Day 149 --- 10 16 00 MRK993 03 08 11 62.5 231.5 1.7 0.0 -18 305 No stop 10 19 30 --- 03 11 41 62.0 232.8 1.7 0.0 192 332 10 16 01 10 20 00 J0119+3210 03 12 11 61.3 235.2 1.9 0.0 12 332 10 20 00 10 21 00 =0116+319 03 13 11 61.2 235.6 1.9 0.0 60 340 10 20 01 10 21 00 MRK993 03 13 11 61.9 233.4 1.8 0.0 -18 340 No stop 10 24 30 --- 03 16 42 61.4 234.6 1.8 0.0 192 367 10 21 01 10 24 30 J0119+3210 03 16 42 60.7 236.8 1.9 0.0 -18 367 No stop 10 26 00 =0116+319 03 18 12 60.5 237.3 2.0 0.0 72 379 10 24 31 10 26 00 MRK993 03 18 12 61.3 235.2 1.9 0.0 -18 379 No stop 10 29 30 --- 03 21 43 60.8 236.4 1.9 0.0 192 406 10 26 01 10 30 00 J0119+3210 03 22 13 60.0 238.7 2.0 0.0 12 406 10 30 00 10 31 00 =0116+319 03 23 13 59.9 239.0 2.0 0.0 60 414 10 30 01 10 31 00 MRK993 03 23 13 60.6 236.9 1.9 0.0 -18 414 No stop 10 34 30 --- 03 26 44 60.2 238.1 2.0 0.0 192 441 10 31 01 10 34 30 J0119+3210 03 26 44 59.4 240.2 2.1 0.0 -18 441 No stop 10 36 00 =0116+319 03 28 14 59.2 240.7 2.1 0.0 72 452 10 34 31 10 36 00 MRK993 03 28 14 60.0 238.6 2.0 0.0 -18 452 No stop 10 39 30 --- 03 31 44 59.5 239.8 2.1 0.0 192 479 10 36 01 10 40 00 J0119+3210 03 32 15 58.7 241.9 2.2 0.0 12 479 10 40 00 10 41 00 =0116+319 03 33 15 58.6 242.3 2.2 0.0 60 487 10 40 01 10 41 00 MRK993 03 33 15 59.3 240.3 2.1 0.0 -18 487 No stop 10 44 30 --- 03 36 45 58.9 241.4 2.2 0.0 192 514 10 41 01 10 44 30 J0119+3210 03 36 45 58.1 243.3 2.3 0.0 -18 514 No stop 10 46 00 =0116+319 03 38 15 57.9 243.8 2.3 0.0 72 526 10 44 31 10 46 00 MRK993 03 38 15 58.7 241.9 2.2 0.0 -18 526 No stop 10 49 30 --- 03 41 46 58.2 243.0 2.2 0.0 192 553 10 46 01 10 50 00 J0119+3210 03 42 16 57.4 245.0 2.4 0.0 12 553 10 50 00 10 51 00 =0116+319 03 43 16 57.2 245.3 2.4 0.0 60 560 10 50 01 10 51 00 MRK993 03 43 16 58.0 243.5 2.3 0.0 -18 560 No stop 10 54 30 --- 03 46 47 57.5 244.5 2.3 0.0 192 587 10 51 01 Schedule for WSTRBORK (Code Wb ) Page 4 Tracing the Radio Outflows in RQ AGN from Pc- to Kpc-scales 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 ---------------------------------------------------------------------------------------- --- Tue 28 May 2024 Day 149 --- 10 54 30 J0119+3210 03 46 47 56.7 246.3 2.4 0.0 -18 587 No stop 10 56 00 =0116+319 03 48 17 56.5 246.8 2.5 0.0 72 599 10 54 31 10 56 00 MRK993 03 48 17 57.3 245.0 2.4 0.0 -18 599 No stop 10 59 30 --- 03 51 48 56.8 246.0 2.4 0.0 192 626 10 56 01 11 00 00 J0119+3210 03 52 18 56.0 247.9 2.5 0.0 12 626 11 00 00 11 01 00 =0116+319 03 53 18 55.8 248.2 2.5 0.0 60 634 11 00 01 11 01 00 MRK993 03 53 18 56.6 246.5 2.4 0.0 -18 634 No stop 11 04 30 --- 03 56 49 56.1 247.5 2.5 0.0 192 661 11 01 01 11 04 30 J0119+3210 03 56 49 55.3 249.2 2.6 0.0 -18 661 No stop 11 06 00 =0116+319 03 58 19 55.1 249.6 2.6 0.0 72 672 11 04 31 11 06 00 MRK993 03 58 19 55.9 247.9 2.5 0.0 -18 672 No stop 11 09 30 --- 04 01 49 55.4 248.9 2.6 0.0 192 699 11 06 01 11 10 00 J0119+3210 04 02 19 54.6 250.7 2.7 0.0 12 699 11 10 00 11 11 00 =0116+319 04 03 20 54.4 251.0 2.7 0.0 60 707 11 10 01 11 11 00 MRK993 04 03 20 55.2 249.3 2.6 0.0 -18 707 No stop 11 14 30 --- 04 06 50 54.7 250.3 2.7 0.0 192 734 11 11 01 11 14 30 J0119+3210 04 06 50 53.9 251.9 2.8 0.0 -18 734 No stop 11 16 00 =0116+319 04 08 20 53.7 252.3 2.8 0.0 72 746 11 14 31 11 16 00 MRK993 04 08 20 54.5 250.7 2.7 0.0 -18 746 No stop 11 19 30 --- 04 11 51 54.0 251.6 2.7 0.0 192 773 11 16 01 11 20 00 J0119+3210 04 12 21 53.1 253.3 2.9 0.0 12 773 11 20 00 11 21 00 =0116+319 04 13 21 53.0 253.6 2.9 0.0 60 781 11 20 01 11 21 00 MRK993 04 13 21 53.8 252.0 2.8 0.0 -18 781 No stop 11 24 30 --- 04 16 52 53.3 252.9 2.8 0.0 192 808 11 21 01 11 24 30 J0119+3210 04 16 52 52.5 254.5 2.9 0.0 -18 808 No stop 11 26 00 =0116+319 04 18 22 52.3 254.9 3.0 0.0 72 819 11 24 31 11 26 00 MRK993 04 18 22 53.1 253.3 2.9 0.0 -18 819 No stop 11 29 30 --- 04 21 53 52.6 254.2 2.9 0.0 192 846 11 26 01 11 30 00 J0119+3210 04 22 23 51.7 255.9 3.0 0.0 12 846 11 30 00 11 31 00 =0116+319 04 23 23 51.5 256.1 3.0 0.0 60 854 11 30 01 Schedule for WSTRBORK (Code Wb ) Page 5 Tracing the Radio Outflows in RQ AGN from Pc- to Kpc-scales 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 ---------------------------------------------------------------------------------------- --- Tue 28 May 2024 Day 149 --- 11 31 00 MRK993 04 23 23 52.4 254.6 2.9 0.0 -18 854 No stop 11 34 30 --- 04 26 53 51.8 255.5 3.0 0.0 192 881 11 31 01 11 34 30 J0119+3210 04 26 53 51.0 257.0 3.1 0.0 -18 881 No stop 11 36 00 =0116+319 04 28 24 50.8 257.3 3.1 0.0 72 893 11 34 31 11 36 00 MRK993 04 28 24 51.6 255.8 3.0 0.0 -18 893 No stop 11 39 30 --- 04 31 54 51.1 256.7 3.1 0.0 192 920 11 36 01 11 40 00 J0119+3210 04 32 24 50.2 258.3 3.2 0.0 12 920 11 40 00 11 41 00 =0116+319 04 33 25 50.0 258.5 3.2 0.0 60 927 11 40 01 11 41 00 MRK993 04 33 25 50.9 257.1 3.1 0.0 -18 927 No stop 11 44 30 --- 04 36 55 50.4 257.9 3.2 0.0 192 955 11 41 01 11 44 30 J0119+3210 04 36 55 49.5 259.3 3.3 0.0 -18 955 No stop 11 46 00 =0116+319 04 38 25 49.3 259.7 3.3 0.0 72 966 11 44 31 11 46 00 MRK993 04 38 25 50.2 258.2 3.2 0.0 -18 966 No stop 11 49 30 --- 04 41 56 49.6 259.1 3.3 0.0 192 993 11 46 01 11 50 00 J0119+3210 04 42 26 48.7 260.6 3.4 0.0 12 993 11 50 00 11 51 00 =0116+319 04 43 26 48.6 260.8 3.4 0.0 60 1001 11 50 01 11 51 00 MRK993 04 43 26 49.4 259.4 3.3 0.0 -18 1001 No stop 11 54 30 --- 04 46 57 48.9 260.2 3.3 0.0 192 1028 11 51 01 11 54 30 J0119+3210 04 46 57 48.0 261.6 3.4 0.0 -18 1028 No stop 11 56 00 =0116+319 04 48 27 47.8 262.0 3.5 0.0 72 1040 11 54 31 11 56 00 MRK993 04 48 27 48.7 260.6 3.4 0.0 -18 1040 No stop 11 59 30 --- 04 51 58 48.1 261.4 3.4 0.0 192 1067 11 56 01 12 00 00 J0119+3210 04 52 28 47.2 262.8 3.5 0.0 12 1067 12 00 00 12 01 00 =0116+319 04 53 28 47.1 263.1 3.5 0.0 60 1074 12 00 01 12 01 00 MRK993 04 53 28 47.9 261.7 3.4 0.0 -18 1074 No stop 12 04 30 --- 04 56 58 47.4 262.5 3.5 0.0 192 1101 12 01 01 12 04 30 J0119+3210 04 56 58 46.5 263.8 3.6 0.0 -18 1101 No stop 12 06 00 =0116+319 04 58 29 46.3 264.2 3.6 0.0 72 1113 12 04 31 12 06 00 MRK993 04 58 29 47.2 262.8 3.5 0.0 -18 1113 No stop 12 09 30 --- 05 01 59 46.6 263.6 3.6 0.0 192 1140 12 06 01 Schedule for WSTRBORK (Code Wb ) Page 6 Tracing the Radio Outflows in RQ AGN from Pc- to Kpc-scales 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 ---------------------------------------------------------------------------------------- --- Tue 28 May 2024 Day 149 --- 12 10 00 J0119+3210 05 02 29 45.7 265.0 3.7 0.0 12 1140 12 10 00 12 11 00 =0116+319 05 03 29 45.6 265.2 3.7 0.0 60 1148 12 10 01 12 11 00 MRK993 05 03 29 46.4 263.9 3.6 0.0 -18 1148 No stop 12 14 30 --- 05 07 00 45.9 264.7 3.7 0.0 192 1175 12 11 01 12 14 30 J0119+3210 05 07 00 45.0 266.0 3.8 0.0 -18 1175 No stop 12 16 00 =0116+319 05 08 30 44.8 266.3 3.8 0.0 72 1186 12 14 31 12 16 00 MRK993 05 08 30 45.7 265.0 3.7 0.0 -18 1186 No stop 12 19 30 --- 05 12 01 45.1 265.7 3.8 0.0 192 1213 12 16 01 12 20 00 J0119+3210 05 12 31 44.2 267.1 3.9 0.0 12 1213 12 20 00 12 21 00 =0116+319 05 13 31 44.1 267.3 3.9 0.0 60 1221 12 20 01 12 21 00 MRK993 05 13 31 44.9 266.0 3.8 0.0 -18 1221 No stop 12 24 30 --- 05 17 02 44.4 266.8 3.8 0.0 192 1248 12 21 01 12 24 30 J0119+3210 05 17 02 43.5 268.0 3.9 0.0 -18 1248 No stop 12 26 00 =0116+319 05 18 32 43.3 268.4 4.0 0.0 72 1260 12 24 31 12 26 00 MRK993 05 18 32 44.2 267.1 3.9 0.0 -18 1260 No stop 12 29 30 --- 05 22 02 43.6 267.8 3.9 0.0 192 1287 12 26 01 12 30 00 J0119+3210 05 22 33 42.7 269.2 4.0 0.0 12 1287 12 30 00 12 31 00 =0116+319 05 23 33 42.5 269.4 4.0 0.0 60 1295 12 30 01 12 31 00 MRK993 05 23 33 43.4 268.1 3.9 0.0 -18 1295 No stop 12 34 30 --- 05 27 03 42.9 268.8 4.0 0.0 192 1322 12 31 01 12 34 30 J0119+3210 05 27 03 42.0 270.1 4.1 0.0 -18 1322 No stop 12 36 00 =0116+319 05 28 34 41.8 270.4 4.1 0.0 72 1333 12 34 31 12 36 00 MRK993 05 28 34 42.6 269.1 4.0 0.0 -18 1333 No stop 12 39 30 --- 05 32 04 42.1 269.8 4.1 0.0 192 1360 12 36 01 12 40 00 J0119+3210 05 32 34 41.2 271.2 4.2 0.0 12 1360 12 40 00 12 41 00 =0116+319 05 33 34 41.0 271.4 4.2 0.0 60 1368 12 40 01 12 41 00 MRK993 05 33 34 41.9 270.1 4.1 0.0 -18 1368 No stop 12 44 30 --- 05 37 05 41.4 270.8 4.2 0.0 192 1395 12 41 01 12 44 30 J0119+3210 05 37 05 40.5 272.0 4.3 0.0 -18 1395 No stop 12 46 00 =0116+319 05 38 35 40.3 272.3 4.3 0.0 72 1407 12 44 31 Schedule for WSTRBORK (Code Wb ) Page 7 Tracing the Radio Outflows in RQ AGN from Pc- to Kpc-scales 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 ---------------------------------------------------------------------------------------- --- Tue 28 May 2024 Day 149 --- 12 52 00 4C39.25 05 44 36 49.8 87.2 -3.7 0.0 -54 1407 12 52 00 12 59 00 --- 05 51 37 50.8 88.5 -3.6 0.0 366 1461 12 52 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess224.L1024 --- 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: 2 Station: WSTRBORK Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 1247.00 1247.00 1247.00 1247.00 1247.00 1247.00 1247.00 1247.00 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 = A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 2 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 379.49 379.49 379.49 379.49 443.49 443.49 443.49 443.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 2 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * MRK993 01 22 42.704718 * 01 25 31.450000 01 26 52.333710 0.00 31 52 35.16789 * 32 08 10.40000 32 15 36.32444 0.00 From catalog imbedded in main SCHED input file. 0116+319 01 16 47.247876 * 01 19 35.003417 01 20 55.429157 2.97 * J0119+3210 31 55 05.83110 * 32 10 50.05658 32 18 20.07207 2.37 J0119+32 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 24 observations. * 3C84 03 16 29.567265 * 03 19 48.160096 03 21 23.034413 1.50 J0319+4130 41 19 51.91692 * 41 30 42.10404 41 35 54.34559 2.86 0316+413 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0319+41 GSFC 2016a X/S astro solution, 10291 observations. * 4C39.25 09 23 55.319216 * 09 27 03.013937 09 28 33.866253 0.31 J0927+3902 39 15 23.56644 * 39 02 20.85185 38 56 11.84344 0.16 0923+392 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0927+39 GSFC 2016a X/S astro solution, 250526 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 MRK993 sess224.L1024 1 2 3 4 5 6 7 8 9 10 2.100 155.745 J0119+3210 sess224.L1024 1 2 3 4 5 6 7 8 9 10 0.850 56.611 3C84 sess224.L1024 1 2 3 4 5 6 7 8 9 10 0.083 7.583 4C39.25 sess224.L1024 1 2 3 4 5 6 7 8 9 10 0.117 6.284 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) MRK993 40.5 J0119+3210 41.7 3C84 23.9 4C39.25 66.3 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