COVER INFORMATION Station: MEDICINA (Code Mc ) Experiment: 18cm global VLBI observations of the starburst galaxy Arp 220 Exp. Code: gv028c Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Eskil Varenius Address: Chalmers University of Technology Onsala Space Observatory 439 92 Onsala Sweden Phone: +46706755341 EMAIL: eskil.varenius@chalmers.se Fax: Phone during observation: +46706755341 Observing mode: vlbi Notes: VLA please use all 27 stations at 18cm. Phase calibrator: J1532+2344 Fringe finder: J1516+1932 Pol. cal.: OQ208 COVER LETTER: This is one of three .key files to observe Arp 220 at 18cm, 6cm and 3.6cm during EVN session I 2023. Arp 220 has two nuclei 1 arcsec apart; we aim to point right in the middle of them, to get both at the same time. OPERATOR NOTES: VLA27: Please use all 27 stations at 18cm. Schedule for MEDICINA (Code Mc ) Page 2 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Sun 12 Mar 2023 Day 71 --- Next scan frequencies: 1626.00 1626.00 1626.00 1626.00 1690.00 1690.00 1690.00 1690.00 Next BBC frequencies: 331.00 331.00 331.00 331.00 395.00 395.00 395.00 395.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 22 30 00 J1516+1932 10 37 50 27.6 449.2 -4.7 -49.1 0 0 22 30 00 22 35 00 =1514+197 10 42 51 28.5 450.1 -4.6 -49.1 300 39 22 30 01 22 37 23 OQ208 10 45 14 46.9 454.4 -3.4 -53.9 102 39 22 37 23 22 42 23 --- 10 50 15 47.8 455.4 -3.3 -53.8 300 77 22 37 24 22 44 35 J1532+2344 10 52 27 30.1 445.4 -4.7 -50.9 91 77 22 44 35 22 46 05 =1530+239 10 53 57 30.3 445.6 -4.7 -50.9 90 89 22 44 36 22 46 31 ARP220 10 54 23 29.9 445.5 -4.7 -50.8 21 89 22 46 31 22 57 01 --- 11 04 55 31.8 447.3 -4.5 -50.9 630 170 22 46 32 22 57 28 J1532+2344 11 05 22 32.4 447.5 -4.5 -51.0 21 170 22 57 28 22 58 58 =1530+239 11 06 52 32.6 447.8 -4.4 -51.1 90 182 22 57 29 22 59 24 ARP220 11 07 19 32.2 447.7 -4.5 -50.9 21 182 22 59 24 23 09 54 --- 11 17 51 34.1 449.5 -4.3 -51.0 630 263 22 59 25 23 10 21 J1532+2344 11 18 18 34.7 449.8 -4.3 -51.1 21 263 23 10 21 23 11 51 =1530+239 11 19 48 34.9 450.0 -4.2 -51.1 90 274 23 10 22 23 12 18 ARP220 11 20 14 34.5 450.0 -4.3 -51.0 21 274 23 12 18 23 22 48 --- 11 30 46 36.4 451.8 -4.1 -51.0 630 356 23 12 19 23 23 15 J1532+2344 11 31 13 37.0 452.1 -4.0 -51.1 21 356 23 23 15 23 24 45 =1530+239 11 32 43 37.2 452.3 -4.0 -51.1 90 367 23 23 16 23 25 11 ARP220 11 33 10 36.8 452.3 -4.0 -50.9 21 367 23 25 11 23 35 41 --- 11 43 42 38.7 454.2 -3.9 -50.8 630 448 23 25 12 23 36 08 J1532+2344 11 44 09 39.3 454.4 -3.8 -50.9 21 448 23 36 08 23 37 38 =1530+239 11 45 39 39.5 454.7 -3.8 -50.9 90 460 23 36 09 23 39 54 OQ208 11 47 55 57.9 468.3 -2.3 -50.3 95 460 23 39 54 23 44 54 --- 11 52 56 58.7 469.6 -2.3 -49.7 300 499 23 39 55 23 47 04 J1532+2344 11 55 07 41.2 456.5 -3.6 -50.7 91 499 23 47 04 23 48 34 =1530+239 11 56 37 41.5 456.8 -3.6 -50.6 90 510 23 47 05 23 49 01 ARP220 11 57 04 41.0 456.7 -3.6 -50.5 21 510 23 49 01 23 59 31 --- 12 07 35 42.9 458.8 -3.5 -50.2 630 591 23 49 02 Schedule for MEDICINA (Code Mc ) Page 3 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Start: Sun 12 Mar 2023 Day 71 -- Stop: Mon 13 Mar 2023 Day 72 --- 23 59 58 J1532+2344 12 08 02 43.5 459.1 -3.4 -50.2 21 591 23 59 58 00 01 28 =1530+239 12 09 33 43.8 459.4 -3.4 -50.2 90 603 23 59 59 00 01 54 ARP220 12 09 59 43.3 459.3 -3.4 -50.1 21 603 00 01 54 00 12 24 --- 12 20 31 45.2 461.4 -3.3 -49.6 630 684 00 01 55 00 12 51 J1532+2344 12 20 58 45.8 461.7 -3.2 -49.6 21 684 00 12 51 00 14 21 =1530+239 12 22 28 46.0 462.1 -3.2 -49.6 90 696 00 12 52 00 14 47 ARP220 12 22 54 45.6 461.9 -3.2 -49.5 21 696 00 14 47 00 25 17 --- 12 33 26 47.4 464.2 -3.0 -48.9 630 777 00 14 48 00 25 44 J1532+2344 12 33 53 48.0 464.6 -3.0 -48.9 21 777 00 25 44 00 27 14 =1530+239 12 35 23 48.3 464.9 -3.0 -48.8 90 788 00 25 45 00 27 41 ARP220 12 35 50 47.8 464.8 -3.0 -48.7 21 788 00 27 41 00 38 11 --- 12 46 21 49.6 467.2 -2.8 -47.9 630 870 00 27 42 00 38 37 J1532+2344 12 46 48 50.2 467.6 -2.8 -47.9 21 870 00 38 37 00 40 07 =1530+239 12 48 19 50.5 467.9 -2.8 -47.8 90 881 00 38 38 00 42 18 OQ208 12 50 29 67.6 489.8 -1.3 -38.5 92 881 00 42 18 00 47 18 --- 12 55 30 68.3 492.1 -1.2 -36.9 300 920 00 42 19 00 49 23 J1532+2344 12 57 36 52.0 470.2 -2.6 -46.9 88 920 00 49 23 00 50 53 =1530+239 12 59 06 52.3 470.6 -2.6 -46.8 90 931 00 49 24 00 51 19 ARP220 12 59 32 51.8 470.5 -2.6 -46.7 21 931 00 51 19 01 01 49 --- 13 10 04 53.6 473.2 -2.4 -45.6 630 1013 00 51 20 01 02 16 J1532+2344 13 10 31 54.2 473.6 -2.4 -45.5 21 1013 01 02 16 01 03 46 =1530+239 13 12 01 54.4 474.1 -2.4 -45.3 90 1024 01 02 17 01 04 12 ARP220 13 12 27 54.0 473.9 -2.4 -45.3 21 1024 01 04 12 01 14 42 --- 13 22 59 55.7 476.9 -2.2 -43.9 630 1105 01 04 13 01 15 09 J1532+2344 13 23 26 56.3 477.3 -2.2 -43.7 21 1105 01 15 09 01 16 39 =1530+239 13 24 56 56.5 477.8 -2.1 -43.5 90 1117 01 15 10 01 17 05 ARP220 13 25 22 56.1 477.6 -2.2 -43.5 21 1117 01 17 05 01 27 35 --- 13 35 54 57.7 480.8 -2.0 -41.9 630 1198 01 17 06 01 28 01 J1532+2344 13 36 21 58.3 481.4 -2.0 -41.7 21 1198 01 28 01 01 29 31 =1530+239 13 37 51 58.5 481.9 -1.9 -41.4 90 1210 01 28 02 Schedule for MEDICINA (Code Mc ) Page 4 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 01 29 58 ARP220 13 38 17 58.1 481.6 -2.0 -41.5 21 1210 01 29 58 01 40 28 --- 13 48 49 59.6 485.1 -1.8 -39.5 630 1291 01 29 59 01 40 54 J1532+2344 13 49 16 60.2 485.8 -1.7 -39.2 21 1291 01 40 54 01 42 24 =1530+239 13 50 46 60.4 486.3 -1.7 -38.9 90 1302 01 40 55 01 44 25 OQ208 13 52 47 73.5 528.1 -0.3 -9.7 62 1302 01 44 25 01 49 25 --- 13 57 47 73.7 531.9 -0.2 -6.5 300 1341 01 44 26 01 51 24 J1532+2344 13 59 47 61.7 489.7 -1.6 -36.8 58 1341 01 51 24 01 52 54 =1530+239 14 01 17 61.9 490.3 -1.5 -36.4 90 1353 01 51 25 01 53 20 ARP220 14 01 43 61.5 489.9 -1.6 -36.6 21 1353 01 53 20 02 03 50 --- 14 12 15 62.8 494.1 -1.4 -33.9 630 1434 01 53 21 02 04 18 J1532+2344 14 12 43 63.4 494.9 -1.4 -33.4 23 1434 02 04 18 02 05 48 =1530+239 14 14 13 63.6 495.6 -1.3 -33.0 90 1445 02 04 19 02 06 15 ARP220 14 14 40 63.2 495.1 -1.4 -33.3 21 1445 02 06 15 02 16 45 --- 14 25 12 64.4 499.8 -1.2 -30.1 630 1527 02 06 16 02 17 14 J1532+2344 14 25 41 64.9 500.7 -1.1 -29.5 23 1527 02 17 14 02 18 44 =1530+239 14 27 11 65.1 501.4 -1.1 -29.0 90 1538 02 17 15 02 19 11 ARP220 14 27 38 64.7 500.9 -1.1 -29.3 22 1538 02 19 11 02 29 41 --- 14 38 10 65.8 506.0 -1.0 -25.7 630 1619 02 19 12 02 30 10 J1532+2344 14 38 40 66.3 507.1 -0.9 -25.0 24 1619 02 30 10 02 31 40 =1530+239 14 40 10 66.4 507.9 -0.9 -24.4 90 1631 02 30 11 02 32 08 ARP220 14 40 38 66.1 507.3 -0.9 -24.8 23 1631 02 32 08 02 42 38 --- 14 51 09 67.0 512.9 -0.7 -20.8 630 1712 02 32 09 02 43 08 J1532+2344 14 51 40 67.4 514.1 -0.7 -19.8 25 1712 02 43 08 02 44 38 =1530+239 14 53 10 67.5 515.0 -0.7 -19.2 90 1724 02 43 09 02 47 21 OQ208 14 55 53 71.2 574.5 0.8 27.3 81 1724 02 47 21 02 52 21 --- 15 00 54 70.7 577.5 0.9 29.5 300 1762 02 47 22 02 54 59 J1532+2344 15 03 32 68.2 521.0 -0.5 -14.7 78 1762 02 54 59 02 56 29 =1530+239 15 05 03 68.3 521.9 -0.5 -14.0 90 1774 02 55 00 02 56 58 ARP220 15 05 32 68.0 521.1 -0.5 -14.6 24 1774 02 56 58 03 07 28 --- 15 16 04 68.5 527.4 -0.3 -9.7 630 1855 02 56 59 Schedule for MEDICINA (Code Mc ) Page 5 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 03 07 59 J1532+2344 15 16 35 68.8 529.0 -0.3 -8.5 26 1855 03 07 59 03 09 29 =1530+239 15 18 05 68.9 530.0 -0.3 -7.8 90 1867 03 08 00 03 09 59 ARP220 15 18 35 68.6 529.0 -0.3 -8.5 24 1867 03 09 59 03 20 29 --- 15 29 06 68.9 535.6 -0.1 -3.4 630 1948 03 10 00 03 21 01 J1532+2344 15 29 38 69.1 537.3 -0.1 -2.1 26 1948 03 21 01 03 22 31 =1530+239 15 31 09 69.1 538.3 -0.0 -1.3 90 1959 03 21 02 03 23 01 ARP220 15 31 39 68.9 537.2 -0.1 -2.1 24 1959 03 23 01 03 33 31 --- 15 42 10 68.9 544.0 0.1 3.1 630 2040 03 23 02 03 34 03 J1532+2344 15 42 43 69.1 545.7 0.1 4.5 26 2040 03 34 03 03 35 33 =1530+239 15 44 13 69.0 546.7 0.2 5.2 90 2052 03 34 04 03 36 03 ARP220 15 44 44 68.8 545.6 0.1 4.3 25 2052 03 36 03 03 46 33 --- 15 55 15 68.5 552.2 0.3 9.4 630 2133 03 36 04 03 47 06 J1532+2344 15 55 48 68.7 554.0 0.4 10.8 27 2133 03 47 06 03 48 36 =1530+239 15 57 18 68.6 554.9 0.4 11.5 90 2145 03 47 07 03 51 44 OQ208 16 00 26 62.4 603.6 1.9 46.5 120 2145 03 51 44 03 56 44 --- 16 05 27 61.6 605.2 2.0 47.3 300 2183 03 51 45 03 59 41 J1532+2344 16 08 25 68.0 561.6 0.6 16.6 113 2183 03 59 41 04 01 11 =1530+239 16 09 55 67.9 562.4 0.6 17.3 90 2195 03 59 42 04 01 42 ARP220 16 10 26 67.8 561.3 0.6 16.4 25 2195 04 01 42 04 12 12 --- 16 20 58 67.0 567.2 0.7 20.8 630 2276 04 01 43 04 12 44 J1532+2344 16 21 31 67.0 569.0 0.8 22.1 27 2276 04 12 44 04 14 14 =1530+239 16 23 01 66.8 569.8 0.8 22.7 90 2288 04 12 45 04 14 46 ARP220 16 23 32 66.8 568.6 0.8 21.9 25 2288 04 14 46 04 25 16 --- 16 34 04 65.8 574.1 1.0 25.9 630 2369 04 14 47 04 25 48 J1532+2344 16 34 37 65.7 575.8 1.0 27.1 27 2369 04 25 48 04 27 18 =1530+239 16 36 07 65.6 576.5 1.0 27.6 90 2381 04 25 49 04 27 49 ARP220 16 36 38 65.5 575.4 1.0 26.8 25 2381 04 27 49 04 38 19 --- 16 47 10 64.4 580.4 1.2 30.3 630 2462 04 27 50 04 38 52 J1532+2344 16 47 43 64.3 581.9 1.2 31.4 27 2462 04 38 52 04 40 22 =1530+239 16 49 13 64.1 582.6 1.3 31.8 90 2473 04 38 53 Schedule for MEDICINA (Code Mc ) Page 6 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 04 40 53 ARP220 16 49 44 64.1 581.6 1.2 31.1 25 2473 04 40 53 04 51 23 --- 17 00 16 62.8 586.2 1.4 34.1 630 2554 04 40 54 04 51 55 J1532+2344 17 00 48 62.6 587.6 1.5 35.1 27 2554 04 51 55 04 53 25 =1530+239 17 02 18 62.4 588.2 1.5 35.4 90 2566 04 51 56 04 56 16 OQ208 17 05 10 51.5 620.4 3.0 53.0 124 2566 04 56 16 04 57 16 --- 17 06 10 51.3 620.7 3.0 53.1 60 2574 04 56 17 04 57 16 OQ208 17 06 10 51.3 620.7 3.0 53.1 -3 2574 No stop 05 01 16 --- 17 10 10 50.6 621.5 3.0 53.2 237 2605 04 57 17 05 03 55 J1532+2344 17 12 50 61.0 592.2 1.7 38.0 115 2605 05 03 55 05 04 55 =1530+239 17 13 50 60.8 592.6 1.7 38.2 60 2612 05 03 56 05 04 55 J1532+2344 17 13 50 60.8 592.6 1.7 38.2 -3 2612 No stop 05 05 25 =1530+239 17 14 20 60.8 592.8 1.7 38.3 27 2616 05 04 56 05 05 56 ARP220 17 14 51 60.8 591.9 1.6 37.7 25 2616 05 05 56 05 16 26 --- 17 25 23 59.3 595.7 1.8 39.9 630 2697 05 05 57 05 16 58 J1532+2344 17 25 54 59.1 596.9 1.9 40.7 26 2697 05 16 58 05 17 58 =1530+239 17 26 55 58.9 597.2 1.9 40.9 60 2705 05 16 59 05 17 58 J1532+2344 17 26 55 58.9 597.2 1.9 40.9 -3 2705 No stop 05 18 28 =1530+239 17 27 25 58.8 597.4 1.9 41.0 27 2709 05 17 59 05 18 58 ARP220 17 27 55 58.9 596.5 1.9 40.4 25 2709 05 18 58 05 29 28 --- 17 38 27 57.3 600.0 2.0 42.3 630 2790 05 18 59 05 30 00 J1532+2344 17 38 58 57.1 601.1 2.1 43.0 26 2790 05 30 00 05 31 00 =1530+239 17 39 59 56.9 601.4 2.1 43.1 60 2798 05 30 01 05 31 00 J1532+2344 17 39 59 56.9 601.4 2.1 43.1 -3 2798 No stop 05 31 30 =1530+239 17 40 29 56.8 601.6 2.1 43.2 27 2802 05 31 01 05 32 00 ARP220 17 40 59 56.9 600.8 2.1 42.7 25 2802 05 32 00 05 42 30 --- 17 51 31 55.3 603.9 2.3 44.2 630 2883 05 32 01 05 43 01 J1532+2344 17 52 02 55.0 604.9 2.3 44.8 26 2883 05 43 01 05 44 01 =1530+239 17 53 02 54.8 605.2 2.3 45.0 60 2891 05 43 02 05 44 01 J1532+2344 17 53 02 54.8 605.2 2.3 45.0 -3 2891 No stop 05 44 31 =1530+239 17 53 32 54.8 605.4 2.3 45.0 27 2895 05 44 02 Schedule for MEDICINA (Code Mc ) Page 7 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 05 45 01 ARP220 17 54 02 54.9 604.6 2.3 44.6 25 2895 05 45 01 05 55 31 --- 18 04 34 53.1 607.5 2.5 45.9 630 2976 05 45 02 05 56 01 J1532+2344 18 05 04 52.9 608.5 2.5 46.4 26 2976 05 56 01 05 57 31 =1530+239 18 06 35 52.6 608.9 2.5 46.6 90 2987 05 56 02 05 59 51 OQ208 18 08 55 40.1 632.4 4.0 54.0 105 2987 05 59 51 06 00 51 --- 18 09 55 40.0 632.6 4.0 54.0 60 2995 05 59 52 06 00 51 OQ208 18 09 55 40.0 632.6 4.0 54.0 -3 2995 No stop 06 04 51 --- 18 13 55 39.2 633.2 4.1 54.0 237 3026 06 00 52 06 07 02 J1532+2344 18 16 07 51.0 611.3 2.7 47.5 97 3026 06 07 02 06 08 02 =1530+239 18 17 07 50.8 611.5 2.7 47.6 60 3034 06 07 03 06 08 02 J1532+2344 18 17 07 50.8 611.5 2.7 47.6 -3 3034 No stop 06 08 32 =1530+239 18 17 37 50.8 611.7 2.7 47.6 27 3038 06 08 03 06 09 01 ARP220 18 18 07 50.9 611.0 2.7 47.3 24 3038 06 09 01 06 19 31 --- 18 28 38 49.1 613.5 2.9 48.2 630 3119 06 09 02 06 20 01 J1532+2344 18 29 08 48.8 614.4 2.9 48.6 25 3119 06 20 01 06 21 01 =1530+239 18 30 09 48.6 614.6 2.9 48.6 60 3126 06 20 02 06 21 01 J1532+2344 18 30 09 48.6 614.6 2.9 48.6 -3 3126 No stop 06 21 31 =1530+239 18 30 39 48.5 614.7 2.9 48.7 27 3130 06 21 02 06 22 00 ARP220 18 31 08 48.7 614.1 2.9 48.4 24 3130 06 22 00 06 32 30 --- 18 41 40 46.9 616.5 3.1 49.1 630 3211 06 22 01 06 33 00 J1532+2344 18 42 09 46.5 617.3 3.1 49.4 25 3211 06 33 00 06 34 00 =1530+239 18 43 10 46.4 617.5 3.2 49.5 60 3219 06 33 01 06 34 00 J1532+2344 18 43 10 46.4 617.5 3.2 49.5 -3 3219 No stop 06 34 30 =1530+239 18 43 40 46.3 617.6 3.2 49.5 27 3223 06 34 01 06 34 59 ARP220 18 44 08 46.4 617.0 3.1 49.2 24 3223 06 34 59 06 45 29 --- 18 54 40 44.6 619.2 3.3 49.8 630 3304 06 35 00 06 45 58 J1532+2344 18 55 10 44.3 620.0 3.4 50.1 25 3304 06 45 58 06 46 58 =1530+239 18 56 10 44.1 620.2 3.4 50.1 60 3312 06 45 59 06 46 58 J1532+2344 18 56 10 44.1 620.2 3.4 50.1 -3 3312 No stop 06 47 28 =1530+239 18 56 40 44.0 620.3 3.4 50.1 27 3316 06 46 59 Schedule for MEDICINA (Code Mc ) Page 8 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 06 47 57 ARP220 18 57 09 44.2 619.8 3.4 49.9 24 3316 06 47 57 06 58 27 --- 19 07 40 42.3 621.9 3.5 50.3 630 3397 06 47 58 06 58 56 J1532+2344 19 08 10 42.0 622.6 3.6 50.5 24 3397 06 58 56 07 00 26 =1530+239 19 09 40 41.7 622.9 3.6 50.6 90 3409 06 58 57 07 02 22 OQ208 19 11 36 29.1 642.4 5.1 52.3 87 3409 07 02 22 07 03 22 --- 19 12 36 28.9 642.6 5.1 52.2 60 3416 07 02 23 07 03 22 OQ208 19 12 36 28.9 642.6 5.1 52.2 -3 3416 No stop 07 07 22 --- 19 16 37 28.2 643.2 5.1 52.1 237 3447 07 03 23 07 09 13 J1532+2344 19 18 28 40.2 624.6 3.7 50.8 82 3447 07 09 13 07 10 13 =1530+239 19 19 28 40.0 624.8 3.8 50.8 60 3455 07 09 14 07 10 13 J1532+2344 19 19 28 40.0 624.8 3.8 50.8 -3 3455 No stop 07 10 43 =1530+239 19 19 58 39.9 624.9 3.8 50.8 27 3459 07 10 14 07 11 11 ARP220 19 20 27 40.0 624.4 3.7 50.6 23 3459 07 11 11 07 21 41 --- 19 30 58 38.2 626.3 3.9 50.8 630 3540 07 11 12 07 22 10 J1532+2344 19 31 27 37.8 627.0 4.0 51.0 24 3540 07 22 10 07 23 10 =1530+239 19 32 27 37.7 627.2 4.0 51.0 60 3548 07 22 11 07 23 10 J1532+2344 19 32 27 37.7 627.2 4.0 51.0 -3 3548 No stop 07 23 40 =1530+239 19 32 57 37.6 627.3 4.0 51.0 27 3552 07 23 11 07 24 08 ARP220 19 33 25 37.7 626.8 4.0 50.9 23 3552 07 24 08 07 34 38 --- 19 43 57 35.9 628.7 4.1 51.0 630 3633 07 24 09 07 35 06 J1532+2344 19 44 26 35.5 629.4 4.2 51.1 24 3633 07 35 06 07 36 06 =1530+239 19 45 26 35.4 629.5 4.2 51.1 60 3640 07 35 07 07 36 06 J1532+2344 19 45 26 35.4 629.5 4.2 51.1 -3 3640 No stop 07 36 36 =1530+239 19 45 56 35.3 629.6 4.2 51.1 27 3644 07 36 07 07 37 04 ARP220 19 46 24 35.4 629.1 4.2 51.0 23 3644 07 37 04 07 47 34 --- 19 56 56 33.6 631.0 4.3 51.0 630 3725 07 37 05 07 48 02 J1532+2344 19 57 24 33.2 631.6 4.4 51.1 24 3725 07 48 02 07 49 02 =1530+239 19 58 24 33.0 631.8 4.4 51.1 60 3733 07 48 03 07 49 02 J1532+2344 19 58 24 33.0 631.8 4.4 51.1 -3 3733 No stop 07 49 32 =1530+239 19 58 54 33.0 631.9 4.4 51.1 27 3737 07 49 03 Schedule for MEDICINA (Code Mc ) Page 9 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 07 50 00 ARP220 19 59 22 33.1 631.4 4.4 51.0 23 3737 07 50 00 08 00 30 --- 20 09 54 31.2 633.2 4.6 50.9 630 3818 07 50 01 08 00 58 J1532+2344 20 10 22 30.9 633.8 4.6 51.0 23 3818 08 00 58 08 02 28 =1530+239 20 11 52 30.7 634.1 4.6 50.9 90 3830 08 00 59 08 04 10 OQ208 20 13 35 18.5 651.9 6.1 48.7 74 3830 08 04 10 08 05 10 --- 20 14 35 18.4 652.0 6.1 48.7 60 3838 08 04 11 08 05 10 OQ208 20 14 35 18.4 652.0 6.1 48.7 -3 3838 No stop 08 09 10 --- 20 18 35 17.7 652.6 6.2 48.4 237 3868 08 05 11 08 10 49 J1532+2344 20 20 14 29.2 635.5 4.8 50.8 71 3868 08 10 49 08 11 49 =1530+239 20 21 14 29.0 635.7 4.8 50.8 60 3876 08 10 50 08 11 49 J1532+2344 20 21 14 29.0 635.7 4.8 50.8 -3 3876 No stop 08 12 19 =1530+239 20 21 45 28.9 635.7 4.8 50.8 27 3880 08 11 50 08 12 46 ARP220 20 22 12 29.1 635.2 4.8 50.7 23 3880 08 12 46 08 23 16 --- 20 32 44 27.2 637.0 4.9 50.5 630 3961 08 12 47 08 23 44 J1532+2344 20 33 12 26.9 637.6 5.0 50.5 23 3961 08 23 44 08 24 44 =1530+239 20 34 12 26.7 637.8 5.0 50.5 60 3969 08 23 45 08 24 44 J1532+2344 20 34 12 26.7 637.8 5.0 50.5 -3 3969 No stop 08 25 14 =1530+239 20 34 42 26.6 637.9 5.0 50.5 27 3973 08 24 45 08 25 42 ARP220 20 35 09 26.8 637.4 5.0 50.4 22 3973 08 25 42 08 36 12 --- 20 45 41 24.9 639.1 5.2 50.1 630 4054 08 25 43 08 36 39 J1532+2344 20 46 09 24.6 639.7 5.2 50.1 23 4054 08 36 39 08 37 39 =1530+239 20 47 09 24.4 639.9 5.2 50.1 60 4062 08 36 40 08 37 39 J1532+2344 20 47 09 24.4 639.9 5.2 50.1 -3 4062 No stop 08 38 09 =1530+239 20 47 39 24.3 640.0 5.2 50.1 27 4066 08 37 40 08 38 37 ARP220 20 48 06 24.5 639.5 5.2 50.0 22 4066 08 38 37 08 49 07 --- 20 58 38 22.6 641.2 5.4 49.7 630 4147 08 38 38 08 49 34 J1532+2344 20 59 06 22.3 641.8 5.4 49.6 23 4147 08 49 34 08 50 34 =1530+239 21 00 06 22.1 642.0 5.4 49.6 60 4154 08 49 35 08 50 34 J1532+2344 21 00 06 22.1 642.0 5.4 49.6 -3 4154 No stop 08 51 04 =1530+239 21 00 36 22.1 642.0 5.4 49.6 27 4158 08 50 35 Schedule for MEDICINA (Code Mc ) Page 10 18cm global VLBI observations of the starburst galaxy Arp 220 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 08 51 31 ARP220 21 01 03 22.2 641.6 5.4 49.6 22 4158 08 51 31 09 02 01 --- 21 11 35 20.4 643.3 5.6 49.1 630 4239 08 51 32 09 02 29 J1532+2344 21 12 03 20.1 643.9 5.6 49.1 23 4239 09 02 29 09 03 59 =1530+239 21 13 33 19.8 644.1 5.7 49.0 90 4251 09 02 30 09 12 06 J1532+2344 21 21 41 18.4 645.4 5.8 48.6 484 4251 09 12 06 09 13 06 =1530+239 21 22 42 18.2 645.6 5.8 48.6 60 4259 09 12 07 09 13 06 J1532+2344 21 22 42 18.2 645.6 5.8 48.6 -3 4259 No stop 09 13 36 =1530+239 21 23 12 18.1 645.7 5.8 48.5 27 4263 09 13 07 09 14 03 ARP220 21 23 39 18.3 645.2 5.8 48.6 22 4263 09 14 03 09 24 33 --- 21 34 10 16.5 646.9 6.0 48.0 630 4344 09 14 04 09 25 00 J1532+2344 21 34 38 16.2 647.5 6.0 47.9 23 4344 09 25 00 09 26 00 =1530+239 21 35 38 16.0 647.6 6.0 47.9 60 4352 09 25 01 09 26 00 J1532+2344 21 35 38 16.0 647.6 6.0 47.9 -3 4352 No stop 09 26 30 =1530+239 21 36 08 15.9 647.7 6.0 47.9 27 4355 09 26 01 09 26 57 ARP220 21 36 35 16.1 647.3 6.0 47.9 22 4355 09 26 57 09 37 27 --- 21 47 07 14.3 649.0 6.2 47.3 630 4437 09 26 58 09 37 55 J1532+2344 21 47 34 14.0 649.5 6.2 47.2 23 4437 09 37 55 09 38 55 =1530+239 21 48 34 13.8 649.7 6.2 47.1 60 4444 09 37 56 09 38 55 J1532+2344 21 48 34 13.8 649.7 6.2 47.1 -3 4444 No stop 09 39 25 =1530+239 21 49 05 13.8 649.8 6.3 47.1 27 4448 09 38 56 09 39 52 ARP220 21 49 31 13.9 649.3 6.2 47.2 22 4448 09 39 52 09 50 22 --- 22 00 03 12.1 651.0 6.4 46.5 630 4529 09 39 53 09 50 49 J1532+2344 22 00 31 11.8 651.6 6.4 46.4 23 4529 09 50 49 09 51 49 =1530+239 22 01 31 11.7 651.8 6.5 46.3 60 4537 09 50 50 09 51 49 J1532+2344 22 01 31 11.7 651.8 6.5 46.3 -3 4537 No stop 09 52 19 =1530+239 22 02 01 11.6 651.9 6.5 46.2 27 4541 09 51 50 09 52 46 ARP220 22 02 28 11.7 651.4 6.4 46.3 22 4541 09 52 46 10 03 16 --- 22 12 59 10.0 653.1 6.6 45.6 630 4622 09 52 47 10 03 43 J1532+2344 22 13 27 9.7 653.7 6.7 45.4 23 4622 10 03 43 10 05 13 =1530+239 22 14 57 9.5 654.0 6.7 45.3 90 4634 10 03 44 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.L1024glob --- 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: 18 Station: MEDICINA 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= 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 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 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 4 Setup file default. Used with PCAL = off LO sum= 1626.00 1626.00 1626.00 1626.00 1690.00 1690.00 1690.00 1690.00 BBC fr= 331.00 331.00 331.00 331.00 395.00 395.00 395.00 395.00 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 4 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) * ARP220 15 32 46.905485 * 15 34 57.250000 15 35 57.940194 0.00 23 40 07.75728 * 23 30 11.33000 23 25 18.96580 0.00 From catalog imbedded in main SCHED input file. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 13.487531 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 23 13.19246 0.16 1328+307 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 observations. * OQ208 14 04 45.615156 * 14 07 00.394415 14 08 03.650024 0.24 J1407+2827 28 41 29.23515 * 28 27 14.69019 28 20 26.03181 0.35 1404+286 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1407+28 GSFC 2016a X/S astro solution, 68278 observations. 1514+197 15 14 40.985841 * 15 16 56.796164 15 18 00.065612 0.01 * J1516+1932 19 43 10.94247 * 19 32 12.99203 19 26 53.79356 0.02 J1516+19 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 4472 observations. 1530+239 15 30 36.092759 * 15 32 46.345214 15 33 47.008502 0.08 * J1532+2344 23 54 09.32913 * 23 44 05.26796 23 39 09.39949 0.14 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 171 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 ARP220 sess123.L1024glob 1 2 3 4 5 6 7 8 9 10 11 17 + 12.250 1600.189 3C286 sess123.L1024glob 17 0.133 0.000 OQ208 sess123.L1024glob 1 2 3 4 5 6 7 8 9 10 11 17 + 1.500 188.550 J1516+1932 sess123.L1024glob 1 2 3 4 5 6 7 8 9 10 11 0.083 10.000 J1532+2344 sess123.L1024glob 1 2 3 4 5 6 7 8 9 10 11 17 + 2.183 275.621 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) ARP220 117.8 3C286 140.6 OQ208 135.1 J1516+1932 122.6 J1532+2344 118.2 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