COVER INFORMATION Station: ARECIBO (Code Ar ) Experiment: Revealing the radio structure in AT2018cow Exp. Code: EM137 Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Jun Yang, contact person Address: Onsala Space Observatory SE-439 92 Onsala Sweden Phone: +46 31 7725531 EMAIL: jun.yang@chalmers.se Fax: +46 31 7725590 Phone during observation: +46 31 7725531 Observing mode: 2048-16-2 Notes: PI: Prashanth Mohan, Shanghai Astronomical Observatory 2048 Mbps, 16x32 MHz, RCP & LCP, 2 bit sampling Full EVN observations at C band/5 GHz. DBBC2 stations: DDC V107. Schedule for ARECIBO (Code Ar ) Page 2 Revealing the radio structure in AT2018cow 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 6 Jun 2019 Day 157 --- Next scan frequencies: 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 Next BBC frequencies: 807.51 807.51 807.51 807.51 775.51 775.51 775.51 775.51 743.51 743.51 743.51 743.51 711.51 711.51 711.51 711.51 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 02 25 30 AT2018 14 55 22 70.5 75.1 -1.4 -97.8 0 0 02 25 30 02 28 30 --- 14 58 23 71.2 74.8 -1.3 -98.4 180 23 02 25 31 02 28 30 J1619+2247 14 58 23 70.4 73.5 -1.4 -99.2 -26 23 No stop 02 29 30 --- 14 59 23 70.6 73.4 -1.3 -99.4 34 31 02 28 31 02 30 15 VLA1 15 00 08 71.7 74.5 -1.3 -98.8 12 31 02 30 15 02 32 15 --- 15 02 09 72.1 74.3 -1.2 -99.2 120 46 02 30 16 02 32 15 J1619+2247 15 02 09 71.2 73.1 -1.3 -100.0 -28 46 No stop 02 33 15 --- 15 03 09 71.5 73.0 -1.3 -100.2 32 54 02 32 16 02 33 15 AT2018 15 03 09 72.3 74.2 -1.2 -99.3 -30 54 No stop 02 36 15 --- 15 06 09 73.0 73.8 -1.2 -100.0 150 77 02 33 16 02 36 15 J1619+2247 15 06 09 72.2 72.6 -1.2 -100.9 -27 77 No stop 02 37 15 --- 15 07 09 72.4 72.4 -1.2 -101.1 33 84 02 36 16 02 37 15 AT2018 15 07 09 73.2 73.7 -1.2 -100.2 -31 84 No stop 02 39 15 --- 15 09 10 73.7 73.4 -1.1 -100.7 89 100 02 37 16 02 39 15 VLA2 15 09 10 73.5 73.4 -1.1 -100.7 -12 100 No stop 02 40 15 --- 15 10 10 73.7 73.2 -1.1 -100.9 48 108 02 39 16 02 40 50 J1619+2247 15 10 45 73.2 71.9 -1.2 -102.0 11 108 02 40 50 02 41 50 --- 15 11 45 73.4 71.7 -1.1 -102.3 60 115 02 40 51 02 41 50 AT2018 15 11 45 74.3 73.0 -1.1 -101.3 -31 115 No stop 02 44 50 --- 15 14 46 74.9 72.5 -1.0 -102.1 149 138 02 41 51 02 44 50 J1619+2247 15 14 46 74.1 71.1 -1.1 -103.1 -27 138 No stop 02 45 50 --- 15 15 46 74.3 70.9 -1.1 -103.4 33 146 02 44 51 02 45 50 AT2018 15 15 46 75.2 72.3 -1.0 -102.4 -31 146 No stop 02 48 50 --- 15 18 46 75.8 71.7 -1.0 -103.3 149 169 02 45 51 02 48 50 J1619+2247 15 18 46 75.0 70.3 -1.0 -104.3 -27 169 No stop 02 49 50 --- 15 19 46 75.2 70.1 -1.0 -104.6 33 177 02 48 51 Schedule for ARECIBO (Code Ar ) Page 3 Revealing the radio structure in AT2018cow 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 6 Jun 2019 Day 157 --- 02 50 35 VLA1 15 20 32 76.3 71.2 -0.9 -104.0 12 177 02 50 35 02 52 35 --- 15 22 32 76.8 70.7 -0.9 -104.6 120 192 02 50 36 02 52 35 J1619+2247 15 22 32 75.8 69.4 -1.0 -105.5 -29 192 No stop 02 53 35 --- 15 23 32 76.1 69.2 -0.9 -105.8 31 200 02 52 36 02 53 35 AT2018 15 23 32 76.9 70.5 -0.9 -104.8 -31 200 No stop 02 56 35 --- 15 26 33 77.6 69.7 -0.8 -105.9 149 223 02 53 36 02 56 35 J1619+2247 15 26 33 76.7 68.3 -0.9 -106.9 -27 223 No stop 02 57 35 --- 15 27 33 76.9 68.1 -0.9 -107.3 33 230 02 56 36 02 57 35 AT2018 15 27 33 77.8 69.4 -0.8 -106.3 -32 230 No stop 02 59 35 --- 15 29 33 78.3 68.7 -0.8 -107.1 88 246 02 57 36 02 59 35 VLA2 15 29 33 78.1 68.7 -0.8 -107.1 -12 246 No stop 03 00 35 --- 15 30 33 78.3 68.4 -0.8 -107.5 48 253 02 59 36 03 01 10 J1619+2247 15 31 08 77.7 66.9 -0.8 -108.8 11 253 03 01 10 03 02 10 --- 15 32 08 77.9 66.5 -0.8 -109.3 60 261 03 01 11 03 02 10 AT2018 15 32 08 78.8 67.8 -0.7 -108.3 -32 261 No stop 03 05 10 --- 15 35 09 79.5 66.6 -0.7 -109.8 148 284 03 02 11 03 05 10 J1619+2247 15 35 09 78.6 65.4 -0.7 -110.7 -28 284 No stop 03 06 10 --- 15 36 09 78.8 64.9 -0.7 -111.2 32 292 03 05 11 03 06 10 AT2018 15 36 09 79.7 66.2 -0.7 -110.3 -32 292 No stop 03 09 10 --- 15 39 10 80.4 64.7 -0.6 -112.0 148 315 03 06 11 03 09 10 J1619+2247 15 39 10 79.5 63.6 -0.7 -112.8 -28 315 No stop 03 10 10 --- 15 40 10 79.7 63.1 -0.7 -113.4 32 323 03 09 11 03 10 55 VLA1 15 40 55 80.8 63.6 -0.6 -113.3 11 323 03 10 55 03 12 55 --- 15 42 55 81.2 62.4 -0.6 -114.7 120 338 03 10 56 03 12 55 J1619+2247 15 42 55 80.3 61.6 -0.6 -115.2 -30 338 No stop 03 13 55 --- 15 43 55 80.5 61.0 -0.6 -115.9 30 346 03 12 56 03 13 55 AT2018 15 43 55 81.4 61.9 -0.5 -115.2 -32 346 No stop 03 16 55 --- 15 46 56 82.0 59.8 -0.5 -117.6 148 369 03 13 56 03 16 55 J1619+2247 15 46 56 81.1 59.0 -0.6 -118.1 -29 369 No stop 03 17 55 --- 15 47 56 81.3 58.3 -0.5 -118.9 31 376 03 16 56 Schedule for ARECIBO (Code Ar ) Page 4 Revealing the radio structure in AT2018cow 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 6 Jun 2019 Day 157 --- 03 17 55 AT2018 15 47 56 82.2 59.0 -0.5 -118.5 -32 376 No stop 03 19 55 --- 15 49 56 82.6 57.3 -0.4 -120.4 88 392 03 17 56 03 19 55 VLA2 15 49 56 82.4 57.6 -0.5 -120.0 -12 392 No stop 03 20 55 --- 15 50 57 82.6 56.7 -0.4 -121.0 48 399 03 19 56 03 21 30 J1619+2247 15 51 32 82.0 55.4 -0.5 -122.1 10 399 03 21 30 03 22 30 --- 15 52 32 82.2 54.5 -0.5 -123.1 60 407 03 21 31 03 22 30 AT2018 15 52 32 83.1 54.8 -0.4 -123.1 -32 407 No stop 03 25 30 --- 15 55 32 83.7 51.3 -0.4 -126.9 148 430 03 22 31 03 25 30 J1619+2247 15 55 32 82.8 51.5 -0.4 -126.4 -29 430 No stop 03 26 30 --- 15 56 32 82.9 50.3 -0.4 -127.6 31 438 03 25 31 03 26 30 AT2018 15 56 32 83.9 50.0 -0.3 -128.3 -32 438 No stop 03 29 30 --- 15 59 33 84.4 45.6 -0.3 -132.9 148 461 03 26 31 03 29 30 J1619+2247 15 59 33 83.5 46.6 -0.3 -131.6 -29 461 No stop 03 30 30 --- 16 00 33 83.6 45.2 -0.3 -133.1 31 468 03 29 31 03 31 15 VLA1 16 01 18 84.7 42.0 -0.3 -136.7 12 468 03 31 15 03 33 15 --- 16 03 19 85.0 38.1 -0.2 -140.8 120 484 03 31 16 03 33 15 J1619+2247 16 03 19 84.1 41.0 -0.3 -137.5 -30 484 No stop 03 34 15 --- 16 04 19 84.3 39.3 -0.3 -139.3 30 492 03 33 16 03 34 15 AT2018 16 04 19 85.1 36.6 -0.2 -142.3 -31 492 No stop 03 37 15 --- 16 07 19 85.5 29.5 -0.2 -149.6 149 515 03 34 16 03 37 15 J1619+2247 16 07 19 84.7 33.6 -0.2 -145.3 -28 515 No stop 03 38 15 --- 16 08 19 84.8 31.5 -0.2 -147.5 32 522 03 37 16 03 38 15 AT2018 16 08 19 85.6 26.9 -0.1 -152.4 -30 522 No stop 03 40 15 --- 16 10 20 85.8 21.2 -0.1 -158.2 90 538 03 38 16 03 40 15 VLA2 16 10 20 85.7 22.9 -0.1 -156.4 -14 538 No stop 03 41 15 --- 16 11 20 85.8 20.0 -0.1 -159.4 46 545 03 40 16 03 41 50 J1619+2247 16 11 55 85.2 23.1 -0.1 -156.2 11 545 03 41 50 03 42 50 --- 16 12 55 85.3 20.5 -0.1 -158.8 60 553 03 41 51 03 42 50 AT2018 16 12 55 86.0 13.2 -0.1 -166.5 -32 553 No stop 03 45 50 --- 16 15 56 86.1 3.2 -0.0 -176.8 148 576 03 42 51 Schedule for ARECIBO (Code Ar ) Page 5 Revealing the radio structure in AT2018cow 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 6 Jun 2019 Day 157 --- 03 45 50 J1619+2247 16 15 56 85.5 12.3 -0.1 -167.4 -30 576 No stop 03 46 50 --- 16 16 56 85.5 9.4 -0.1 -170.3 30 584 03 45 51 03 46 50 AT2018 16 16 56 86.1 359.7 0.0 W 179.7 -757 584 No stop 03 49 50 --- 16 19 56 86.1 349.6 0.1 W 169.3 0 607 03 46 51 03 49 50 J1619+2247 16 19 56 85.6 360.4 -0.0 -179.5 -34 607 No stop 03 50 50 --- 16 20 56 85.6 357.4 0.0 177.4 26 614 03 49 51 03 51 35 VLA1 16 21 42 85.9 342.9 0.1 162.5 0 614 03 51 35 03 53 35 --- 16 23 42 85.8 336.9 0.1 156.3 120 630 03 51 36 03 53 35 J1619+2247 16 23 42 85.5 349.3 0.1 169.0 -37 630 No stop 03 54 35 --- 16 24 42 85.5 346.4 0.1 166.0 23 637 03 53 36 03 54 35 AT2018 16 24 42 85.7 334.9 0.1 154.3 -42 637 No stop 03 57 35 --- 16 27 43 85.4 327.2 0.2 146.2 138 660 03 54 36 03 57 35 J1619+2247 16 27 43 85.2 338.3 0.1 157.6 -35 660 No stop 03 58 35 --- 16 28 43 85.2 335.8 0.1 155.0 25 668 03 57 36 03 58 35 AT2018 16 28 43 85.2 324.9 0.2 143.8 -40 668 No stop 04 00 35 --- 16 30 43 84.9 320.6 0.2 139.4 80 684 03 58 36 04 00 35 VLA2 16 30 43 85.0 322.3 0.2 141.2 -15 684 No stop 04 01 35 --- 16 31 43 84.9 320.3 0.2 139.1 45 691 04 00 36 04 02 15 J1619+2247 16 32 23 84.7 327.4 0.2 146.3 10 691 04 02 15 04 03 15 --- 16 33 23 84.6 325.3 0.2 144.2 60 699 04 02 16 04 03 15 AT2018 16 33 23 84.5 315.7 0.3 134.3 -36 699 No stop 04 06 15 --- 16 36 24 84.0 311.1 0.3 129.4 144 722 04 03 16 04 06 15 J1619+2247 16 36 24 84.2 319.8 0.3 138.4 -30 722 No stop 04 07 15 --- 16 37 24 84.0 318.1 0.3 136.6 30 730 04 06 16 04 07 15 AT2018 16 37 24 83.8 309.7 0.3 127.9 -33 730 No stop 04 10 15 --- 16 40 25 83.3 306.1 0.4 124.0 147 753 04 07 16 04 10 15 J1619+2247 16 40 25 83.5 313.7 0.3 131.9 -28 753 No stop 04 11 15 --- 16 41 25 83.3 312.4 0.4 130.5 32 760 04 10 16 04 11 55 VLA1 16 42 05 82.9 304.0 0.4 121.8 10 760 04 11 55 04 13 55 --- 16 44 05 82.5 302.2 0.5 119.8 120 776 04 11 56 Schedule for ARECIBO (Code Ar ) Page 6 Revealing the radio structure in AT2018cow 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 6 Jun 2019 Day 157 --- 04 13 55 J1619+2247 16 44 05 82.9 309.1 0.4 127.0 -27 776 No stop 04 14 55 --- 16 45 05 82.7 308.0 0.4 125.9 33 783 04 13 56 04 14 55 AT2018 16 45 05 82.3 301.5 0.5 119.1 -27 783 No stop 04 17 55 --- 16 48 06 81.7 299.2 0.5 116.5 153 806 04 14 56 04 17 55 J1619+2247 16 48 06 82.1 305.1 0.5 122.6 -25 806 No stop 04 18 55 --- 16 49 06 81.9 304.2 0.5 121.7 35 814 04 17 56 04 18 55 AT2018 16 49 06 81.5 298.5 0.5 115.7 -25 814 No stop 04 20 55 --- 16 51 06 81.1 297.2 0.6 114.2 95 829 04 18 56 04 20 55 VLA2 16 51 06 81.2 297.9 0.6 115.0 -12 829 No stop 04 21 55 --- 16 52 07 81.0 297.3 0.6 114.3 48 837 04 20 56 04 22 25 J1619+2247 16 52 37 81.2 301.5 0.5 118.6 8 837 04 22 25 04 23 25 --- 16 53 37 81.0 300.7 0.6 117.8 60 845 04 22 26 04 23 25 AT2018 16 53 37 80.5 295.8 0.6 112.6 -23 845 No stop 04 26 25 --- 16 56 37 79.9 294.3 0.7 110.8 157 868 04 23 26 04 26 25 J1619+2247 16 56 37 80.4 298.8 0.6 115.6 -22 868 No stop 04 27 25 --- 16 57 37 80.2 298.2 0.6 114.9 38 876 04 26 26 04 27 25 AT2018 16 57 37 79.7 293.8 0.7 110.2 -22 876 No stop 04 30 25 --- 17 00 38 79.0 292.5 0.7 108.7 158 899 04 27 26 04 30 25 J1619+2247 17 00 38 79.5 296.6 0.7 113.1 -21 899 No stop 04 31 25 --- 17 01 38 79.3 296.1 0.7 112.5 39 906 04 30 26 04 32 05 VLA1 17 02 18 78.6 291.8 0.8 107.8 16 906 04 32 05 04 34 05 --- 17 04 19 78.1 291.1 0.8 107.0 120 922 04 32 06 04 34 05 J1619+2247 17 04 19 78.8 294.9 0.7 111.0 -22 922 No stop 04 35 05 --- 17 05 19 78.5 294.5 0.8 110.5 38 929 04 34 06 04 35 05 AT2018 17 05 19 78.0 290.9 0.8 106.7 -23 929 No stop 04 38 05 --- 17 08 19 77.3 290.0 0.9 105.5 157 952 04 35 06 04 38 05 J1619+2247 17 08 19 77.9 293.4 0.8 109.1 -21 952 No stop 04 39 05 --- 17 09 19 77.7 293.0 0.8 108.7 39 960 04 38 06 04 39 05 AT2018 17 09 19 77.1 289.7 0.9 105.1 -24 960 No stop 04 41 05 --- 17 11 20 76.7 289.2 0.9 104.4 96 975 04 39 06 Schedule for ARECIBO (Code Ar ) Page 7 Revealing the radio structure in AT2018cow 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 6 Jun 2019 Day 157 --- 04 41 05 VLA2 17 11 20 76.8 289.6 0.9 104.9 -12 975 No stop 04 42 05 --- 17 12 20 76.6 289.3 0.9 104.5 48 983 04 41 06 04 42 35 J1619+2247 17 12 50 76.9 291.9 0.9 107.2 12 983 04 42 35 04 43 35 --- 17 13 50 76.7 291.6 0.9 106.9 60 991 04 42 36 04 43 35 AT2018 17 13 50 76.1 288.6 0.9 103.6 -24 991 No stop 04 46 20 --- 17 16 36 75.5 288.0 1.0 102.8 141 1012 04 43 36 04 46 20 J1619+2247 17 16 36 76.1 290.8 0.9 105.8 -22 1012 No stop 04 47 20 --- 17 17 36 75.8 290.6 1.0 105.5 38 1020 04 46 21 04 47 20 AT2018 17 17 36 75.2 287.8 1.0 102.5 -24 1020 No stop 04 50 00 --- 17 20 16 74.6 287.3 1.1 101.8 136 1040 04 47 21 04 50 00 J1619+2247 17 20 16 75.2 289.9 1.0 104.6 -22 1040 No stop 04 51 00 --- 17 21 16 75.0 289.7 1.0 104.3 38 1048 04 50 01 04 54 00 J1751+0939 17 24 17 78.9 140.9 -0.5 -37.4 -181 1048 04 54 00 05 00 00 =1749+096 17 30 18 79.8 147.5 -0.4 -31.1 179 1094 04 54 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.C2048 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: arcb4 Using up-down conversion unit + VLBIinp at 1.5 MHz Setup group: 17 Station: ARECIBO Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 0.50 Disk used to record data. 1st LO= 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 5750.00 Net SB= L L U U L L U U L L U U L L U U IF SB = L L L L L L L L L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 1 2 3 4 3 4 5 6 5 6 7 8 7 8 BBC SB= U U L L U U L L U U L L U U L L IF = A C A C A C A C A C A C A C A C The following frequency sets based on these setups were used. Frequency Set: 18 Setup file default. Used with PCAL = off LO sum= 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 BBC fr= 807.51 807.51 807.51 807.51 775.51 775.51 775.51 775.51 743.51 743.51 743.51 743.51 711.51 711.51 711.51 711.51 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 18 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * AT2018 16 13 51.046576 * 16 16 00.224400 16 16 50.911776 0.00 22 23 28.30125 * 22 16 04.89000 22 13 20.50404 0.00 From catalog imbedded in main SCHED input file. * VLA1 16 13 32.504723 * 16 15 41.690800 16 16 32.380875 0.00 22 23 52.84715 * 22 16 28.22500 22 13 43.38381 0.00 From catalog imbedded in main SCHED input file. * VLA2 16 14 31.729582 * 16 16 40.813800 16 17 31.466873 0.00 22 26 17.16485 * 22 18 56.41100 22 16 13.02748 0.00 From catalog imbedded in main SCHED input file. * J1619+2247 16 17 06.466942 * 16 19 14.824599 16 20 05.207943 0.00 22 54 58.47384 * 22 47 47.85108 22 45 08.30344 0.00 From catalog imbedded in main SCHED input file. 3C345 16 41 17.606229 * 16 42 58.809967 16 43 39.111339 0.79 * J1642+3948 39 54 10.81492 * 39 48 36.99399 39 46 34.08536 0.59 1641+399 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1642+39 GSFC 2016a X/S astro solution, 53724 observations. 1749+096 17 49 10.387930 * 17 51 32.818574 17 52 28.505154 0.00 * J1751+0939 09 39 42.82586 * 09 39 00.72841 09 38 48.07558 0.00 J1751+09 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 192391 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 AT2018 sess219.C2048 1 2 3 4 5 6 7 8 9 10 14 15 + 6.324 534.478 VLA1 sess219.C2048 1 2 3 4 5 6 7 8 9 10 14 15 + 1.167 113.326 VLA2 sess219.C2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.567 42.727 J1619+2247 sess219.C2048 1 2 3 4 5 6 7 8 9 10 14 15 + 2.941 216.230 J1642+3948 sess219.C2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.075 7.875 J1751+0939 sess219.C2048 1 2 3 4 5 8 9 16 18 0.100 4.049 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) AT2018 134.2 VLA1 134.2 VLA2 134.2 J1619+2247 133.9 J1642+3948 117.6 J1751+0939 144.8 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