COVER INFORMATION Station: TIANMA65 (Code T6 ) Experiment: EVN observations of CSOs at 1.3cm (Session 2) Exp. Code: EY045B Schedule Version: 1.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Xi Yan Address: Calaxy and Cosmology Group Xinjiang Astronomical Observatory (XAO), CAS 150 Science 1-Street, Urumqi 830011, China Phone: +86 17335173376 EMAIL: yanxi@xao.ac.cn Fax: Phone during observation: +86 17335173376 Observing mode: vlbi Notes: Target 1: J1148+5924(NGC3894), 0.4 Jy at KVN22GHz; 0.3 Jy at VLBA15GHz. Calibrator: J1128+5925/NGC3998) Target 2: J1347+1217 (1 Jy at 22GHz and 43GHz) Exclude the third target due to the absence of suitable PRing-source. Fringe Finder: J1058+8114 (0.9Jy at 24GHz, compact) Schedule for TIANMA65 (Code T6 ) Page 2 EVN observations of CSOs at 1.3cm (Session 2) 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 ---------------------------------------------------------------------------------------- --- Wed 26 Feb 2025 Day 57 --- Next scan frequencies: 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 Next BBC frequencies: 659.49 659.49 659.49 659.49 723.49 723.49 723.49 723.49 787.49 787.49 787.49 787.49 851.49 851.49 851.49 851.49 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 21 00 00 1156+295 15 32 23 44.6 -78.3 3.5 73.7 0 0 21 00 00 21 03 30 --- 15 35 53 43.9 -78.0 3.6 73.5 210 54 21 00 01 21 04 30 J1128+5925 15 36 53 40.6 -36.4 4.1 96.4 -25 54 21 04 30 21 06 30 =1125+596 15 38 54 40.3 -36.4 4.2 95.9 95 85 21 04 31 21 06 30 NGC3894 15 38 54 42.9 -35.9 3.8 100.6 -12 85 No stop 21 10 30 --- 15 42 54 42.4 -36.0 3.9 99.7 228 147 21 06 31 21 10 30 NGC3894 15 42 54 42.4 -36.0 3.9 99.7 -2 147 No stop 21 14 30 --- 15 46 55 41.9 -36.1 3.9 98.8 238 209 21 10 31 21 14 30 NGC3894 15 46 55 41.9 -36.1 3.9 98.8 -2 209 No stop 21 18 30 --- 15 50 56 41.4 -36.2 4.0 97.8 238 271 21 14 31 21 19 30 J1128+5925 15 51 56 38.7 -36.6 4.4 93.0 47 271 21 19 30 21 20 30 =1125+596 15 52 56 38.6 -36.6 4.4 92.8 60 286 21 19 31 21 20 30 NGC3894 15 52 56 41.2 -36.3 4.0 97.4 -12 286 No stop 21 24 30 --- 15 56 57 40.7 -36.4 4.1 96.5 228 348 21 20 31 21 24 30 NGC3894 15 56 57 40.7 -36.4 4.1 96.5 -2 348 No stop 21 28 30 --- 16 00 57 40.1 -36.4 4.2 95.6 238 410 21 24 31 21 28 30 NGC3894 16 00 57 40.1 -36.4 4.2 95.6 -2 410 No stop 21 32 30 --- 16 04 58 39.6 -36.5 4.2 94.7 238 471 21 28 31 21 33 30 J1128+5925 16 05 58 36.9 -36.6 4.6 89.9 47 471 21 33 30 21 34 30 =1125+596 16 06 58 36.8 -36.6 4.6 89.7 60 487 21 33 31 21 34 30 NGC3894 16 06 58 39.4 -36.5 4.3 94.2 -12 487 No stop 21 38 30 --- 16 10 59 38.9 -36.6 4.3 93.3 228 549 21 34 31 21 38 30 NGC3894 16 10 59 38.9 -36.6 4.3 93.3 -2 549 No stop 21 42 30 --- 16 15 00 38.4 -36.6 4.4 92.4 238 611 21 38 31 21 42 30 NGC3894 16 15 00 38.4 -36.6 4.4 92.4 -2 611 No stop 21 46 30 --- 16 19 00 37.8 -36.6 4.5 91.6 238 672 21 42 31 Schedule for TIANMA65 (Code T6 ) Page 3 EVN observations of CSOs at 1.3cm (Session 2) 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 ---------------------------------------------------------------------------------------- --- Wed 26 Feb 2025 Day 57 --- 21 47 30 J1128+5925 16 20 00 35.1 -36.6 4.8 87.0 47 672 21 47 30 21 48 30 =1125+596 16 21 01 35.0 -36.6 4.9 86.8 60 688 21 47 31 21 48 30 NGC3894 16 21 01 37.6 -36.6 4.5 91.1 -12 688 No stop 21 52 30 --- 16 25 01 37.1 -36.6 4.6 90.3 228 750 21 48 31 21 52 30 NGC3894 16 25 01 37.1 -36.6 4.6 90.3 -2 750 No stop 21 56 30 --- 16 29 02 36.6 -36.6 4.6 89.4 238 812 21 52 31 21 56 30 NGC3894 16 29 02 36.6 -36.6 4.6 89.4 -2 812 No stop 22 00 30 --- 16 33 03 36.1 -36.6 4.7 88.5 238 873 21 56 31 22 01 30 J1128+5925 16 34 03 33.3 -36.4 5.1 84.0 47 873 22 01 30 22 02 30 =1125+596 16 35 03 33.2 -36.4 5.1 83.8 60 889 22 01 31 22 02 30 NGC3894 16 35 03 35.8 -36.6 4.7 88.1 -12 889 No stop 22 06 30 --- 16 39 04 35.3 -36.6 4.8 87.3 228 951 22 02 31 22 06 30 NGC3894 16 39 04 35.3 -36.6 4.8 87.3 -2 951 No stop 22 10 30 --- 16 43 04 34.8 -36.5 4.9 86.4 238 1013 22 06 31 22 10 30 NGC3894 16 43 04 34.8 -36.5 4.9 86.4 -2 1013 No stop 22 14 30 --- 16 47 05 34.3 -36.5 4.9 85.6 238 1074 22 10 31 22 15 30 J1128+5925 16 48 05 31.5 -36.1 5.3 81.2 47 1074 22 15 30 22 16 30 =1125+596 16 49 05 31.4 -36.1 5.3 81.0 60 1090 22 15 31 22 16 30 NGC3894 16 49 05 34.0 -36.5 5.0 85.2 -12 1090 No stop 22 20 30 --- 16 53 06 33.5 -36.4 5.0 84.3 228 1152 22 16 31 22 20 30 NGC3894 16 53 06 33.5 -36.4 5.0 84.3 -2 1152 No stop 22 24 30 --- 16 57 07 33.0 -36.4 5.1 83.5 238 1213 22 20 31 22 24 30 NGC3894 16 57 07 33.0 -36.4 5.1 83.5 -2 1213 No stop 22 28 30 --- 17 01 07 32.5 -36.3 5.2 82.7 238 1275 22 24 31 22 29 30 J1128+5925 17 02 07 29.8 -35.7 5.5 78.3 48 1275 22 29 30 22 30 30 =1125+596 17 03 07 29.6 -35.7 5.6 78.1 60 1291 22 29 31 22 30 30 NGC3894 17 03 07 32.2 -36.2 5.2 82.3 -12 1291 No stop 22 34 30 --- 17 07 08 31.7 -36.2 5.3 81.5 228 1353 22 30 31 22 34 30 NGC3894 17 07 08 31.7 -36.2 5.3 81.5 -2 1353 No stop 22 38 30 --- 17 11 09 31.2 -36.1 5.3 80.7 238 1414 22 34 31 Schedule for TIANMA65 (Code T6 ) Page 4 EVN observations of CSOs at 1.3cm (Session 2) 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 ---------------------------------------------------------------------------------------- --- Wed 26 Feb 2025 Day 57 --- 22 38 30 NGC3894 17 11 09 31.2 -36.1 5.3 80.7 -2 1414 No stop 22 42 30 --- 17 15 09 30.7 -36.0 5.4 79.8 238 1476 22 38 31 22 43 30 J1128+5925 17 16 10 28.0 -35.3 5.8 75.5 48 1476 22 43 30 22 44 30 =1125+596 17 17 10 27.9 -35.3 5.8 75.3 60 1492 22 43 31 22 52 30 J1347+1217 17 25 11 36.8 261.7 3.6 60.1 -116 1492 22 52 30 22 56 30 =1345+125 17 29 12 36.0 262.3 3.7 60.2 124 1554 22 52 31 22 56 30 J1347+1217 17 29 12 36.0 262.3 3.7 60.2 -2 1554 No stop 23 00 30 =1345+125 17 33 12 35.1 262.9 3.7 60.4 238 1615 22 56 31 23 01 00 J1347+1217 17 33 43 35.0 263.0 3.7 60.4 28 1615 23 01 00 23 05 00 =1345+125 17 37 43 34.2 263.6 3.8 60.5 240 1677 23 01 01 23 05 00 J1347+1217 17 37 43 34.2 263.6 3.8 60.5 -2 1677 No stop 23 09 00 =1345+125 17 41 44 33.3 264.1 3.9 60.6 238 1739 23 05 01 23 09 30 J1347+1217 17 42 14 33.2 264.2 3.9 60.6 28 1739 23 09 30 23 13 30 =1345+125 17 46 15 32.4 264.8 4.0 60.7 240 1801 23 09 31 23 13 30 J1347+1217 17 46 15 32.4 264.8 4.0 60.7 -2 1801 No stop 23 18 00 =1345+125 17 50 45 31.4 265.4 4.0 60.8 268 1870 23 13 31 23 18 00 J1347+1217 17 50 45 31.4 265.4 4.0 60.8 -2 1870 No stop 23 22 30 =1345+125 17 55 16 30.4 266.0 4.1 60.9 268 1940 23 18 01 23 23 00 J1347+1217 17 55 46 30.3 266.1 4.1 60.9 28 1940 23 23 00 23 27 00 =1345+125 17 59 47 29.5 266.7 4.2 61.0 240 2002 23 23 01 23 27 00 J1347+1217 17 59 47 29.5 266.7 4.2 61.0 -2 2002 No stop 23 31 30 =1345+125 18 04 18 28.5 267.3 4.3 61.0 268 2071 23 27 01 23 31 30 J1347+1217 18 04 18 28.5 267.3 4.3 61.0 -2 2071 No stop 23 36 00 =1345+125 18 08 48 27.6 267.9 4.3 61.1 268 2141 23 31 31 23 36 30 J1347+1217 18 09 18 27.4 267.9 4.3 61.1 28 2141 23 36 30 23 40 30 =1345+125 18 13 19 26.6 268.5 4.4 61.1 240 2203 23 36 31 23 40 30 J1347+1217 18 13 19 26.6 268.5 4.4 61.1 -2 2203 No stop 23 45 00 =1345+125 18 17 50 25.6 269.1 4.5 61.1 268 2272 23 40 31 23 45 00 J1347+1217 18 17 50 25.6 269.1 4.5 61.1 -2 2272 No stop 23 49 30 =1345+125 18 22 20 24.7 269.6 4.6 61.2 268 2342 23 45 01 Schedule for TIANMA65 (Code T6 ) Page 5 EVN observations of CSOs at 1.3cm (Session 2) 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 ---------------------------------------------------------------------------------------- --- Wed 26 Feb 2025 Day 57 --- 23 50 00 J1347+1217 18 22 51 24.5 269.7 4.6 61.2 28 2342 23 50 00 23 54 00 =1345+125 18 26 51 23.7 270.2 4.6 61.2 240 2404 23 50 01 23 54 00 J1347+1217 18 26 51 23.7 270.2 4.6 61.2 -2 2404 No stop 23 58 30 =1345+125 18 31 22 22.7 270.8 4.7 61.2 268 2473 23 54 01 --- Start: Wed 26 Feb 2025 Day 57 -- Stop: Thu 27 Feb 2025 Day 58 --- 23 58 30 J1347+1217 18 31 22 22.7 270.8 4.7 61.2 -2 2473 No stop 00 03 00 =1345+125 18 35 53 21.8 271.4 4.8 61.1 268 2543 23 58 31 00 03 30 J1347+1217 18 36 23 21.7 271.4 4.8 61.1 28 2543 00 03 30 00 07 30 =1345+125 18 40 23 20.8 272.0 4.9 61.1 240 2605 00 03 31 00 07 30 J1347+1217 18 40 23 20.8 272.0 4.9 61.1 -2 2605 No stop 00 12 00 =1345+125 18 44 54 19.8 272.5 4.9 61.1 268 2674 00 07 31 00 12 00 J1347+1217 18 44 54 19.8 272.5 4.9 61.1 -2 2674 No stop 00 16 30 =1345+125 18 49 25 18.9 273.1 5.0 61.0 268 2744 00 12 01 00 17 00 J1347+1217 18 49 55 18.8 273.2 5.0 61.0 28 2744 00 17 00 00 21 00 =1345+125 18 53 56 17.9 273.7 5.1 61.0 240 2806 00 17 01 00 21 00 J1347+1217 18 53 56 17.9 273.7 5.1 61.0 -2 2806 No stop 00 25 30 =1345+125 18 58 26 16.9 274.2 5.2 60.9 268 2875 00 21 01 00 25 30 J1347+1217 18 58 26 16.9 274.2 5.2 60.9 -2 2875 No stop 00 30 00 =1345+125 19 02 57 16.0 274.8 5.2 60.8 268 2945 00 25 31 00 30 30 J1347+1217 19 03 27 15.9 274.8 5.2 60.8 28 2945 00 30 30 00 34 30 =1345+125 19 07 28 15.0 275.3 5.3 60.7 240 3007 00 30 31 00 34 30 J1347+1217 19 07 28 15.0 275.3 5.3 60.7 -2 3007 No stop 00 39 00 =1345+125 19 11 59 14.0 275.9 5.4 60.6 268 3076 00 34 31 00 39 00 J1347+1217 19 11 59 14.0 275.9 5.4 60.6 -2 3076 No stop 00 43 30 =1345+125 19 16 29 13.1 276.5 5.5 60.5 268 3146 00 39 01 00 44 30 J1347+1217 19 17 30 12.9 276.6 5.5 60.5 58 3146 00 44 30 00 49 00 =1345+125 19 22 00 11.9 277.1 5.6 60.4 270 3215 00 44 31 00 49 00 J1347+1217 19 22 00 11.9 277.1 5.6 60.4 -2 3215 No stop 00 53 00 =1345+125 19 26 01 11.1 277.6 5.6 60.3 238 3277 00 49 01 Schedule for TIANMA65 (Code T6 ) Page 6 EVN observations of CSOs at 1.3cm (Session 2) 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 27 Feb 2025 Day 58 --- 01 03 00 NGC3998 19 36 03 13.0 327.8 7.6 53.3 499 3277 01 03 00 01 07 00 --- 19 40 03 12.5 328.2 7.7 52.5 240 3339 01 03 01 01 08 00 NGC3894 19 41 03 13.9 332.2 7.8 51.4 50 3339 01 08 00 01 12 00 --- 19 45 04 13.5 332.6 7.9 50.6 240 3401 01 08 01 01 12 00 NGC3998 19 45 04 12.0 328.6 7.8 51.6 -10 3401 No stop 01 16 00 --- 19 49 05 11.5 329.0 7.8 50.9 230 3463 01 12 01 01 16 00 NGC3894 19 49 05 13.1 332.9 8.0 49.8 -10 3463 No stop 01 20 00 --- 19 53 05 12.7 333.2 8.0 49.0 230 3524 01 16 01 01 21 00 NGC3998 19 54 06 11.0 329.4 7.9 49.9 50 3524 01 21 00 01 25 00 --- 19 58 06 10.6 329.8 8.0 49.2 240 3586 01 21 01 01 26 00 NGC3894 19 59 06 12.2 333.8 8.1 47.8 50 3586 01 26 00 01 30 00 --- 20 03 07 11.8 334.1 8.2 47.0 240 3648 01 26 01 01 30 00 NGC3998 20 03 07 10.0 330.3 8.1 48.2 -10 3648 No stop 01 34 00 --- 20 07 08 9.6 330.7 8.1 47.5 230 3710 01 30 01 01 34 00 NGC3894 20 07 08 11.4 334.5 8.3 46.2 -10 3710 No stop 01 38 00 --- 20 11 08 11.0 334.8 8.3 45.5 230 3772 01 34 01 01 44 00 NGC3894 20 17 09 10.5 335.4 8.4 44.3 358 3772 01 44 00 01 48 00 --- 20 21 10 10.1 335.8 8.5 43.5 240 3834 01 44 01 01 52 00 NGC3894 20 25 11 9.8 336.1 8.6 42.7 238 3834 01 52 00 01 56 00 --- 20 29 11 9.5 336.5 8.6 41.9 240 3895 01 52 01 02 57 00 J1058+8114 21 30 21 22.8 356.3 10.5 20.9 3600 3895 02 57 00 03 00 00 =1053+815 21 33 22 22.8 356.4 10.5 20.2 180 3942 02 57 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess125.K2048 --- 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: 10 Station: TIANMA65 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= 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 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 5 1 5 2 6 2 6 3 7 3 7 4 8 4 8 BBC SB= L L U U L L U U L L U U L L U U IF = A4 B3 A4 B3 A4 B3 A4 B3 A4 B3 A4 B3 A4 B3 A4 B3 The following frequency sets based on these setups were used. Frequency Set: 10 Setup file default. Used with PCAL = off LO sum= 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 BBC fr= 659.49 659.49 659.49 659.49 723.49 723.49 723.49 723.49 787.49 787.49 787.49 787.49 851.49 851.49 851.49 851.49 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: 10 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) * NGC3998 11 55 20.947530 * 11 57 56.133331 11 59 16.874136 0.00 55 43 54.65353 * 55 27 12.92205 55 18 37.42249 0.00 From catalog imbedded in main SCHED input file. 1053+815 10 53 36.229432 * 10 58 11.535369 11 00 37.853651 0.03 * J1058+8114 81 30 35.56783 * 81 14 32.67518 81 06 23.71190 0.00 J1058+81 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 35777 observations. 1125+596 11 25 23.181651 * 11 28 13.340676 11 29 41.945018 0.11 * J1128+5925 59 41 46.14385 * 59 25 14.79854 59 16 47.30813 0.06 J1128+59 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 477 observations. * NGC3894 11 46 10.410918 * 11 48 50.358256 11 50 13.820333 0.36 J1148+5924 59 41 36.72438 * 59 24 56.38192 59 16 22.53506 0.19 1146+596 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 120 observations. * 1156+295 11 56 57.786211 * 11 59 31.833912 12 00 50.969786 0.00 J1159+2914 29 31 25.73880 * 29 14 43.82690 29 06 08.48410 0.00 J1159+29 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 78215 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 19.394240 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 22 30.58841 0.16 1328+307 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 observations. 1345+125 13 45 06.171234 * 13 47 33.361612 13 48 48.446212 0.10 * J1347+1217 12 32 20.33883 * 12 17 24.24015 12 09 39.64632 0.21 J1347+12 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 201 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 NGC3998 sess125.K2048 1 2 3 6 7 8 10 11 12 13 14 + 0.867 71.210 J1058+8114 sess125.K2048 1 2 3 6 7 8 10 11 12 13 14 + 0.050 5.247 J1128+5925 sess125.K2048 1 2 3 6 7 8 10 11 12 13 14 + 0.150 18.843 NGC3894 sess125.K2048 1 2 3 6 7 8 10 11 12 13 14 + 2.200 260.287 1156+295 sess125.K2048 1 2 3 6 7 8 10 11 12 13 14 + 0.058 8.925 3C286 sess125.K2048 2 14 0.050 0.500 J1347+1217 sess125.K2048 1 2 3 6 7 8 10 11 12 13 14 + 2.025 277.350 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) NGC3998 130.5 J1058+8114 107.2 J1128+5925 128.2 NGC3894 127.4 1156+295 152.0 3C286 134.4 J1347+1217 133.7 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