COVER INFORMATION Station: KVNPC (Code Kc ) 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 KVNPC (Code Kc ) 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 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 22139.49 22139.49 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 Next BBC frequencies: 11970.51 11970.51 11906.51 11906.51 11842.51 11842.51 11778.51 11778.51 11970.51 11970.51 11906.51 11906.51 11842.51 11842.51 11778.51 11778.51 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 16 01 38 39.8 -80.9 4.0 63.7 0 0 21 00 00 21 03 30 --- 16 05 08 39.2 -80.5 4.1 63.5 210 54 21 00 01 21 04 30 J1128+5925 16 06 08 41.9 -39.9 4.6 84.7 37 54 21 04 30 21 06 30 =1125+596 16 08 09 41.7 -39.9 4.6 84.3 120 85 21 04 31 21 06 30 NGC3894 16 08 09 44.3 -40.1 4.3 88.6 -4 85 No stop 21 10 30 --- 16 12 09 43.8 -40.1 4.4 87.7 236 147 21 06 31 21 10 30 NGC3894 16 12 09 43.8 -40.1 4.4 87.7 -2 147 No stop 21 14 30 --- 16 16 10 43.3 -40.0 4.4 86.9 238 209 21 10 31 21 14 30 NGC3894 16 16 10 43.3 -40.0 4.4 86.9 -2 209 No stop 21 18 30 --- 16 20 11 42.8 -40.0 4.5 86.1 238 271 21 14 31 21 19 30 J1128+5925 16 21 11 40.0 -39.6 4.9 81.7 56 271 21 19 30 21 20 30 =1125+596 16 22 11 39.9 -39.6 4.9 81.5 60 286 21 19 31 21 20 30 NGC3894 16 22 11 42.5 -40.0 4.5 85.7 -4 286 No stop 21 24 30 --- 16 26 12 42.0 -39.9 4.6 84.8 236 348 21 20 31 21 24 30 NGC3894 16 26 12 42.0 -39.9 4.6 84.8 -2 348 No stop 21 28 30 --- 16 30 12 41.5 -39.9 4.7 84.0 238 410 21 24 31 21 28 30 NGC3894 16 30 12 41.5 -39.9 4.7 84.0 -2 410 No stop 21 32 30 --- 16 34 13 41.0 -39.8 4.7 83.2 238 471 21 28 31 21 33 30 J1128+5925 16 35 13 38.3 -39.2 5.1 78.9 56 471 21 33 30 21 34 30 =1125+596 16 36 13 38.1 -39.2 5.1 78.7 60 487 21 33 31 21 34 30 NGC3894 16 36 13 40.7 -39.7 4.8 82.8 -4 487 No stop 21 38 30 --- 16 40 14 40.2 -39.6 4.8 82.0 236 549 21 34 31 21 38 30 NGC3894 16 40 14 40.2 -39.6 4.8 82.0 -2 549 No stop 21 42 30 --- 16 44 15 39.7 -39.5 4.9 81.2 238 611 21 38 31 21 42 30 NGC3894 16 44 15 39.7 -39.5 4.9 81.2 -2 611 No stop 21 46 30 --- 16 48 15 39.2 -39.4 5.0 80.4 238 672 21 42 31 Schedule for KVNPC (Code Kc ) 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 49 15 36.5 -38.7 5.3 76.2 56 672 21 47 30 21 48 30 =1125+596 16 50 16 36.4 -38.7 5.3 76.0 60 688 21 47 31 21 48 30 NGC3894 16 50 16 38.9 -39.4 5.0 80.0 -4 688 No stop 21 52 30 --- 16 54 16 38.4 -39.3 5.1 79.2 236 750 21 48 31 21 52 30 NGC3894 16 54 16 38.4 -39.3 5.1 79.2 -2 750 No stop 21 56 30 --- 16 58 17 37.9 -39.1 5.1 78.4 238 812 21 52 31 21 56 30 NGC3894 16 58 17 37.9 -39.1 5.1 78.4 -2 812 No stop 22 00 30 --- 17 02 18 37.4 -39.0 5.2 77.7 238 873 21 56 31 22 01 30 J1128+5925 17 03 18 34.8 -38.2 5.6 73.5 56 873 22 01 30 22 02 30 =1125+596 17 04 18 34.6 -38.1 5.6 73.3 60 889 22 01 31 22 02 30 NGC3894 17 04 18 37.2 -38.9 5.2 77.3 -4 889 No stop 22 06 30 --- 17 08 19 36.7 -38.8 5.3 76.5 236 951 22 02 31 22 06 30 NGC3894 17 08 19 36.7 -38.8 5.3 76.5 -2 951 No stop 22 10 30 --- 17 12 19 36.2 -38.6 5.4 75.7 238 1013 22 06 31 22 10 30 NGC3894 17 12 19 36.2 -38.6 5.4 75.7 -2 1013 No stop 22 14 30 --- 17 16 20 35.7 -38.5 5.4 75.0 238 1074 22 10 31 22 15 30 J1128+5925 17 17 20 33.1 -37.5 5.8 70.9 56 1074 22 15 30 22 16 30 =1125+596 17 18 20 32.9 -37.4 5.8 70.7 60 1090 22 15 31 22 16 30 NGC3894 17 18 20 35.4 -38.4 5.5 74.6 -4 1090 No stop 22 20 30 --- 17 22 21 35.0 -38.2 5.5 73.8 236 1152 22 16 31 22 20 30 NGC3894 17 22 21 35.0 -38.2 5.5 73.8 -2 1152 No stop 22 24 30 --- 17 26 22 34.5 -38.0 5.6 73.0 238 1213 22 20 31 22 24 30 NGC3894 17 26 22 34.5 -38.0 5.6 73.0 -2 1213 No stop 22 28 30 --- 17 30 22 34.0 -37.9 5.7 72.3 238 1275 22 24 31 22 29 30 J1128+5925 17 31 22 31.4 -36.8 6.0 68.3 56 1275 22 29 30 22 30 30 =1125+596 17 32 23 31.3 -36.7 6.0 68.1 60 1291 22 29 31 22 30 30 NGC3894 17 32 23 33.7 -37.8 5.7 71.9 -4 1291 No stop 22 34 30 --- 17 36 23 33.2 -37.6 5.8 71.2 236 1353 22 30 31 22 34 30 NGC3894 17 36 23 33.2 -37.6 5.8 71.2 -2 1353 No stop 22 38 30 --- 17 40 24 32.8 -37.4 5.8 70.4 238 1414 22 34 31 Schedule for KVNPC (Code Kc ) 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 40 24 32.8 -37.4 5.8 70.4 -2 1414 No stop 22 42 30 --- 17 44 24 32.3 -37.2 5.9 69.7 238 1476 22 38 31 22 43 30 J1128+5925 17 45 25 29.7 -35.9 6.3 65.7 56 1476 22 43 30 22 44 30 =1125+596 17 46 25 29.6 -35.9 6.3 65.5 60 1492 22 43 31 22 46 30 J1347+1217 17 48 25 31.1 261.2 4.0 53.3 -32 1492 22 46 30 22 48 30 =1345+125 17 50 25 30.7 261.5 4.0 53.3 88 1523 22 46 31 22 48 30 J1347+1217 17 50 25 30.7 261.5 4.0 53.3 -2 1523 No stop 22 52 30 =1345+125 17 54 26 30.0 262.2 4.1 53.5 238 1584 22 48 31 22 52 30 J1347+1217 17 54 26 30.0 262.2 4.1 53.5 -2 1584 No stop 22 56 30 =1345+125 17 58 27 29.2 262.8 4.2 53.6 238 1646 22 52 31 22 56 30 J1347+1217 17 58 27 29.2 262.8 4.2 53.6 -2 1646 No stop 23 00 30 =1345+125 18 02 27 28.4 263.5 4.2 53.7 238 1708 22 56 31 23 01 00 J1347+1217 18 02 58 28.3 263.6 4.2 53.7 28 1708 23 01 00 23 05 00 =1345+125 18 06 58 27.5 264.2 4.3 53.8 240 1770 23 01 01 23 05 00 J1347+1217 18 06 58 27.5 264.2 4.3 53.8 -2 1770 No stop 23 09 00 =1345+125 18 10 59 26.7 264.9 4.4 53.9 238 1832 23 05 01 23 09 30 J1347+1217 18 11 29 26.6 265.0 4.4 53.9 28 1832 23 09 30 23 13 30 =1345+125 18 15 30 25.8 265.6 4.4 54.0 240 1894 23 09 31 23 13 30 J1347+1217 18 15 30 25.8 265.6 4.4 54.0 -2 1894 No stop 23 18 00 =1345+125 18 20 00 24.9 266.3 4.5 54.1 268 1963 23 13 31 23 18 00 J1347+1217 18 20 00 24.9 266.3 4.5 54.1 -2 1963 No stop 23 22 30 =1345+125 18 24 31 24.0 267.0 4.6 54.1 268 2033 23 18 01 23 23 00 J1347+1217 18 25 01 23.9 267.1 4.6 54.1 28 2033 23 23 00 23 27 00 =1345+125 18 29 02 23.1 267.8 4.7 54.2 240 2095 23 23 01 23 27 00 J1347+1217 18 29 02 23.1 267.8 4.7 54.2 -2 2095 No stop 23 31 30 =1345+125 18 33 33 22.2 268.5 4.7 54.2 268 2164 23 27 01 23 31 30 J1347+1217 18 33 33 22.2 268.5 4.7 54.2 -2 2164 No stop 23 36 00 =1345+125 18 38 03 21.3 269.1 4.8 54.2 268 2234 23 31 31 23 36 30 J1347+1217 18 38 33 21.2 269.2 4.8 54.2 28 2234 23 36 30 23 40 30 =1345+125 18 42 34 20.4 269.8 4.9 54.2 240 2296 23 36 31 Schedule for KVNPC (Code Kc ) 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 40 30 J1347+1217 18 42 34 20.4 269.8 4.9 54.2 -2 2296 No stop 23 45 00 =1345+125 18 47 05 19.5 270.5 5.0 54.2 268 2365 23 40 31 23 45 00 J1347+1217 18 47 05 19.5 270.5 5.0 54.2 -2 2365 No stop 23 49 30 =1345+125 18 51 36 18.7 271.2 5.0 54.2 268 2435 23 45 01 23 50 00 J1347+1217 18 52 06 18.6 271.3 5.1 54.2 28 2435 23 50 00 23 54 00 =1345+125 18 56 06 17.8 271.9 5.1 54.2 240 2497 23 50 01 23 54 00 J1347+1217 18 56 06 17.8 271.9 5.1 54.2 -2 2497 No stop 23 58 30 =1345+125 19 00 37 16.9 272.6 5.2 54.1 268 2566 23 54 01 --- Start: Wed 26 Feb 2025 Day 57 -- Stop: Thu 27 Feb 2025 Day 58 --- 23 58 30 J1347+1217 19 00 37 16.9 272.6 5.2 54.1 -2 2566 No stop 00 03 00 =1345+125 19 05 08 16.0 273.2 5.3 54.1 268 2636 23 58 31 00 03 30 J1347+1217 19 05 38 15.9 273.3 5.3 54.1 28 2636 00 03 30 00 07 30 =1345+125 19 09 38 15.1 273.9 5.3 54.0 240 2697 00 03 31 00 07 30 J1347+1217 19 09 38 15.1 273.9 5.3 54.0 -2 2697 No stop 00 12 00 =1345+125 19 14 09 14.2 274.6 5.4 54.0 268 2767 00 07 31 00 12 00 J1347+1217 19 14 09 14.2 274.6 5.4 54.0 -2 2767 No stop 00 16 30 =1345+125 19 18 40 13.3 275.2 5.5 53.9 268 2837 00 12 01 01 03 00 NGC3998 20 05 18 15.4 329.8 8.1 44.5 2762 2837 01 03 00 01 07 00 --- 20 09 18 15.0 330.2 8.2 43.8 240 2898 01 03 01 01 08 00 NGC3894 20 10 18 16.9 334.1 8.3 42.8 55 2898 01 08 00 01 12 00 --- 20 14 19 16.6 334.5 8.4 42.0 240 2960 01 08 01 01 12 00 NGC3998 20 14 19 14.5 330.7 8.3 42.9 -5 2960 No stop 01 16 00 --- 20 18 20 14.1 331.2 8.3 42.2 235 3022 01 12 01 01 16 00 NGC3894 20 18 20 16.2 334.9 8.5 41.3 -5 3022 No stop 01 20 00 --- 20 22 20 15.9 335.3 8.5 40.5 235 3084 01 16 01 01 21 00 NGC3998 20 23 21 13.6 331.7 8.4 41.3 55 3084 01 21 00 01 25 00 --- 20 27 21 13.3 332.2 8.5 40.6 240 3146 01 21 01 01 26 00 NGC3894 20 28 21 15.4 335.9 8.6 39.4 55 3146 01 26 00 01 30 00 --- 20 32 22 15.1 336.3 8.7 38.6 240 3208 01 26 01 Schedule for KVNPC (Code Kc ) 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 30 00 NGC3998 20 32 22 12.8 332.7 8.6 39.7 -5 3208 No stop 01 34 00 --- 20 36 23 12.4 333.2 8.6 38.9 235 3269 01 30 01 01 34 00 NGC3894 20 36 23 14.8 336.7 8.8 37.9 -5 3269 No stop 01 38 00 --- 20 40 23 14.5 337.1 8.8 37.1 235 3331 01 34 01 01 39 00 NGC3998 20 41 23 12.0 333.8 8.7 38.0 55 3331 01 39 00 01 43 00 --- 20 45 24 11.6 334.2 8.8 37.3 240 3393 01 39 01 01 44 00 NGC3894 20 46 24 14.0 337.8 8.9 36.0 55 3393 01 44 00 01 48 00 --- 20 50 25 13.7 338.2 9.0 35.2 240 3455 01 44 01 01 48 00 NGC3998 20 50 25 11.2 334.8 8.9 36.4 -5 3455 No stop 01 52 00 --- 20 54 26 10.9 335.3 8.9 35.7 235 3517 01 48 01 01 52 00 NGC3894 20 54 26 13.4 338.6 9.1 34.5 -5 3517 No stop 01 56 00 --- 20 58 26 13.1 339.1 9.1 33.7 235 3579 01 52 01 01 57 00 NGC3998 20 59 26 10.5 335.9 9.0 34.7 55 3579 01 57 00 02 01 00 --- 21 03 27 10.1 336.3 9.1 34.0 240 3640 01 57 01 02 02 00 NGC3894 21 04 27 12.7 339.7 9.2 32.6 55 3640 02 02 00 02 06 00 --- 21 08 28 12.4 340.2 9.3 31.8 240 3702 02 02 01 02 06 00 NGC3998 21 08 28 9.7 336.9 9.2 33.1 -5 3702 No stop 02 10 00 --- 21 12 29 9.4 337.4 9.2 32.3 235 3764 02 06 01 02 10 00 NGC3894 21 12 29 12.2 340.6 9.4 31.0 -5 3764 No stop 02 14 00 --- 21 16 29 11.9 341.1 9.4 30.3 235 3826 02 10 01 02 20 00 NGC3894 21 22 30 11.5 341.7 9.5 29.1 358 3826 02 20 00 02 24 00 --- 21 26 31 11.3 342.2 9.6 28.3 240 3888 02 20 01 02 28 00 NGC3894 21 30 32 11.0 342.7 9.7 27.6 238 3888 02 28 00 02 32 00 --- 21 34 32 10.8 343.1 9.7 26.8 240 3950 02 28 01 02 38 00 NGC3894 21 40 33 10.5 343.8 9.8 25.6 358 3950 02 38 00 02 42 00 --- 21 44 34 10.2 344.3 9.9 24.8 240 4011 02 38 01 02 46 00 NGC3894 21 48 34 10.0 344.8 10.0 24.1 238 4011 02 46 00 02 50 00 --- 21 52 35 9.8 345.2 10.0 23.3 240 4073 02 46 01 02 57 00 J1058+8114 21 59 36 28.9 357.3 11.0 13.8 407 4073 02 57 00 03 00 00 =1053+815 22 02 37 28.9 357.5 11.0 13.1 180 4120 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: 14 Station: KVNPC Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 34110.00 Net SB= L U L U L U L U L U L U L U L U IF SB = L L L L L L L L L L L L L L L L Pol. = LCP LCP LCP LCP LCP LCP LCP LCP RCP RCP RCP RCP RCP RCP RCP RCP BBC = 1 1 1 1 1 1 1 1 3 3 3 3 3 3 3 3 BBC SB= U L U L U L U L U L U L U L U L IF = A A A A A A A A B B B B B B B B The following frequency sets based on these setups were used. Frequency Set: 6 Setup file default. Used with PCAL = off LO sum= 22139.49 22139.49 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 22139.49 22139.49 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 BBC fr= 11970.51 11970.51 11906.51 11906.51 11842.51 11842.51 11778.51 11778.51 11970.51 11970.51 11906.51 11906.51 11842.51 11842.51 11778.51 11778.51 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: 6 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