COVER INFORMATION Station: VLBA_OV (Code Ov ) 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 VLBA_OV (Code Ov ) 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- Next scan frequencies: 1594.00 1594.00 1626.00 1626.00 1658.00 1658.00 1690.00 1690.00 Next BBC frequencies: 806.00 806.00 774.00 774.00 742.00 742.00 710.00 710.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 05 59 51 OQ208 09 29 13 32.0 76.8 -4.6 -61.7 0 0 05 59 51 06 00 51 --- 09 30 13 32.2 76.9 -4.6 -61.8 60 8 05 59 52 06 00 51 OQ208 09 30 13 32.2 76.9 -4.6 -61.8 -6 8 06 00 57 06 04 51 --- 09 34 14 33.0 77.4 -4.6 -62.0 234 38 06 00 52 06 07 02 J1532+2344 09 36 25 14.5 71.1 -6.0 -55.3 84 38 06 07 02 06 08 02 =1530+239 09 37 25 14.7 71.3 -5.9 -55.4 60 46 06 07 03 06 08 02 J1532+2344 09 37 25 14.7 71.3 -5.9 -55.4 -6 46 06 08 08 06 08 32 =1530+239 09 37 55 14.8 71.3 -5.9 -55.4 24 49 06 08 03 06 09 01 ARP220 09 38 25 14.4 71.3 -6.0 -55.3 20 49 06 09 01 06 19 31 --- 09 48 57 16.4 72.7 -5.8 -55.9 630 130 06 09 02 06 20 01 J1532+2344 09 49 27 17.0 72.9 -5.7 -56.2 21 130 06 20 01 06 21 01 =1530+239 09 50 27 17.2 73.0 -5.7 -56.2 60 138 06 20 02 06 21 01 J1532+2344 09 50 27 17.2 73.0 -5.7 -56.2 -6 138 06 21 07 06 21 31 =1530+239 09 50 57 17.3 73.1 -5.7 -56.3 24 141 06 21 02 06 22 00 ARP220 09 51 26 16.8 73.0 -5.7 -56.1 20 141 06 22 00 06 32 30 --- 10 01 58 18.9 74.5 -5.6 -56.7 630 222 06 22 01 06 33 00 J1532+2344 10 02 28 19.5 74.6 -5.5 -56.9 21 222 06 33 00 06 34 00 =1530+239 10 03 28 19.7 74.7 -5.5 -57.0 60 230 06 33 01 06 34 00 J1532+2344 10 03 28 19.7 74.7 -5.5 -57.0 -6 230 06 34 06 06 34 30 =1530+239 10 03 58 19.8 74.8 -5.5 -57.0 24 233 06 34 01 06 34 59 ARP220 10 04 27 19.3 74.8 -5.5 -56.9 20 233 06 34 59 06 45 29 --- 10 14 58 21.4 76.2 -5.3 -57.4 630 314 06 35 00 06 45 58 J1532+2344 10 15 28 22.0 76.3 -5.3 -57.6 20 314 06 45 58 06 46 58 =1530+239 10 16 28 22.2 76.5 -5.3 -57.7 60 322 06 45 59 06 46 58 J1532+2344 10 16 28 22.2 76.5 -5.3 -57.7 -6 322 06 47 04 06 47 28 =1530+239 10 16 58 22.3 76.5 -5.3 -57.7 24 325 06 46 59 06 47 57 ARP220 10 17 27 21.8 76.5 -5.3 -57.5 20 325 06 47 57 06 58 27 --- 10 27 59 23.9 77.9 -5.1 -58.0 630 406 06 47 58 Schedule for VLBA_OV (Code Ov ) 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 06 58 56 J1532+2344 10 28 28 24.5 78.0 -5.1 -58.3 20 406 06 58 56 07 00 26 =1530+239 10 29 58 24.8 78.2 -5.1 -58.3 90 417 06 58 57 07 02 22 OQ208 10 31 54 44.3 84.8 -3.6 -64.3 68 417 07 02 22 07 03 22 --- 10 32 55 44.5 84.9 -3.6 -64.3 60 425 07 02 23 07 03 22 OQ208 10 32 55 44.5 84.9 -3.6 -64.3 -6 425 07 03 28 07 07 22 --- 10 36 55 45.3 85.4 -3.5 -64.4 234 455 07 03 23 07 09 13 J1532+2344 10 38 46 26.5 79.4 -4.9 -58.7 63 455 07 09 13 07 10 13 =1530+239 10 39 47 26.7 79.5 -4.9 -58.7 60 463 07 09 14 07 10 13 J1532+2344 10 39 47 26.7 79.5 -4.9 -58.7 -6 463 07 10 19 07 10 43 =1530+239 10 40 17 26.8 79.6 -4.9 -58.8 24 466 07 10 14 07 11 11 ARP220 10 40 45 26.4 79.6 -4.9 -58.6 19 466 07 11 11 07 21 41 --- 10 51 17 28.4 81.0 -4.7 -59.0 630 547 07 11 12 07 22 10 J1532+2344 10 51 45 29.1 81.1 -4.7 -59.2 20 547 07 22 10 07 23 10 =1530+239 10 52 46 29.3 81.3 -4.7 -59.2 60 555 07 22 11 07 23 10 J1532+2344 10 52 46 29.3 81.3 -4.7 -59.2 -6 555 07 23 16 07 23 40 =1530+239 10 53 16 29.4 81.3 -4.7 -59.2 24 558 07 23 11 07 24 08 ARP220 10 53 44 28.9 81.3 -4.7 -59.1 19 558 07 24 08 07 34 38 --- 11 04 15 31.0 82.8 -4.5 -59.4 630 639 07 24 09 07 35 06 J1532+2344 11 04 44 31.6 82.9 -4.5 -59.6 20 639 07 35 06 07 36 06 =1530+239 11 05 44 31.8 83.0 -4.5 -59.6 60 647 07 35 07 07 36 06 J1532+2344 11 05 44 31.8 83.0 -4.5 -59.6 -6 647 07 36 12 07 36 36 =1530+239 11 06 14 31.9 83.1 -4.5 -59.6 24 650 07 36 07 07 37 04 ARP220 11 06 42 31.5 83.1 -4.5 -59.5 19 650 07 37 04 07 47 34 --- 11 17 14 33.6 84.6 -4.3 -59.7 630 731 07 37 05 07 48 02 J1532+2344 11 17 42 34.2 84.7 -4.3 -59.9 19 731 07 48 02 07 49 02 =1530+239 11 18 42 34.4 84.8 -4.3 -60.0 60 739 07 48 03 07 49 02 J1532+2344 11 18 42 34.4 84.8 -4.3 -60.0 -6 739 07 49 08 07 49 32 =1530+239 11 19 12 34.5 84.9 -4.2 -60.0 24 742 07 49 03 07 50 00 ARP220 11 19 40 34.1 84.9 -4.3 -59.8 19 742 07 50 00 08 00 30 --- 11 30 12 36.1 86.4 -4.1 -60.0 630 823 07 50 01 Schedule for VLBA_OV (Code Ov ) 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 --- 08 00 58 J1532+2344 11 30 40 36.8 86.5 -4.1 -60.2 19 823 08 00 58 08 02 28 =1530+239 11 32 10 37.1 86.7 -4.0 -60.2 90 835 08 00 59 08 04 10 OQ208 11 33 53 56.6 94.0 -2.6 -64.5 54 835 08 04 10 08 05 10 --- 11 34 53 56.8 94.2 -2.6 -64.4 60 842 08 04 11 08 05 10 OQ208 11 34 53 56.8 94.2 -2.6 -64.4 -6 842 08 05 16 08 09 10 --- 11 38 54 57.6 94.9 -2.5 -64.3 234 873 08 05 11 08 10 49 J1532+2344 11 40 33 38.7 87.9 -3.9 -60.3 51 873 08 10 49 08 11 49 =1530+239 11 41 33 38.9 88.1 -3.9 -60.3 60 880 08 10 50 08 11 49 J1532+2344 11 41 33 38.9 88.1 -3.9 -60.3 -6 880 08 11 55 08 12 19 =1530+239 11 42 03 39.0 88.1 -3.9 -60.3 24 883 08 11 50 08 12 46 ARP220 11 42 30 38.6 88.1 -3.9 -60.1 18 883 08 12 46 08 23 16 --- 11 53 02 40.7 89.7 -3.7 -60.2 630 965 08 12 47 08 23 44 J1532+2344 11 53 30 41.3 89.8 -3.7 -60.4 19 965 08 23 44 08 24 44 =1530+239 11 54 30 41.5 90.0 -3.7 -60.4 60 972 08 23 45 08 24 44 J1532+2344 11 54 30 41.5 90.0 -3.7 -60.4 -6 972 08 24 50 08 25 14 =1530+239 11 55 00 41.6 90.1 -3.6 -60.4 24 975 08 24 45 08 25 42 ARP220 11 55 28 41.2 90.1 -3.7 -60.2 18 975 08 25 42 08 36 12 --- 12 05 59 43.3 91.7 -3.5 -60.1 630 1057 08 25 43 08 36 39 J1532+2344 12 06 27 43.9 91.8 -3.5 -60.3 19 1057 08 36 39 08 37 39 =1530+239 12 07 27 44.1 92.0 -3.4 -60.3 60 1064 08 36 40 08 37 39 J1532+2344 12 07 27 44.1 92.0 -3.4 -60.3 -6 1064 08 37 45 08 38 09 =1530+239 12 07 57 44.2 92.1 -3.4 -60.3 24 1067 08 37 40 08 38 37 ARP220 12 08 25 43.7 92.1 -3.5 -60.1 18 1067 08 38 37 08 49 07 --- 12 18 56 45.8 93.8 -3.3 -60.0 630 1149 08 38 38 08 49 34 J1532+2344 12 19 24 46.5 93.9 -3.2 -60.1 19 1149 08 49 34 08 50 34 =1530+239 12 20 24 46.7 94.1 -3.2 -60.1 60 1156 08 49 35 08 50 34 J1532+2344 12 20 24 46.7 94.1 -3.2 -60.1 -6 1156 08 50 40 08 51 04 =1530+239 12 20 54 46.8 94.2 -3.2 -60.1 24 1159 08 50 35 08 51 31 ARP220 12 21 21 46.3 94.2 -3.2 -59.9 18 1159 08 51 31 09 02 01 --- 12 31 53 48.4 96.0 -3.1 -59.7 630 1241 08 51 32 Schedule for VLBA_OV (Code Ov ) 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 --- 09 02 29 J1532+2344 12 32 21 49.0 96.1 -3.0 -59.8 19 1241 09 02 29 09 03 59 =1530+239 12 33 51 49.3 96.4 -3.0 -59.7 90 1252 09 02 30 09 05 34 OQ208 12 35 26 68.7 107.9 -1.5 -59.4 47 1252 09 05 34 09 06 34 --- 12 36 26 68.9 108.2 -1.5 -59.3 60 1260 09 05 35 09 06 34 OQ208 12 36 26 68.9 108.2 -1.5 -59.3 -6 1260 09 06 40 09 10 34 --- 12 40 27 69.6 109.5 -1.5 -58.5 234 1290 09 06 35 09 12 06 J1532+2344 12 42 00 50.9 97.9 -2.9 -59.4 45 1290 09 12 06 09 13 06 =1530+239 12 43 00 51.1 98.1 -2.8 -59.4 60 1298 09 12 07 09 13 06 J1532+2344 12 43 00 51.1 98.1 -2.8 -59.4 -6 1298 09 13 12 09 13 36 =1530+239 12 43 30 51.2 98.1 -2.8 -59.4 24 1301 09 13 07 09 14 03 ARP220 12 43 57 50.8 98.1 -2.9 -59.2 18 1301 09 14 03 09 24 33 --- 12 54 29 52.9 100.2 -2.7 -58.7 630 1382 09 14 04 09 25 00 J1532+2344 12 54 56 53.5 100.4 -2.6 -58.8 19 1382 09 25 00 09 26 00 =1530+239 12 55 56 53.7 100.6 -2.6 -58.7 60 1390 09 25 01 09 26 00 J1532+2344 12 55 56 53.7 100.6 -2.6 -58.7 -6 1390 09 26 06 09 26 30 =1530+239 12 56 26 53.8 100.7 -2.6 -58.7 24 1393 09 26 01 09 26 57 ARP220 12 56 53 53.3 100.6 -2.7 -58.5 18 1393 09 26 57 09 37 27 --- 13 07 25 55.4 102.8 -2.5 -57.8 630 1474 09 26 58 09 37 55 J1532+2344 13 07 53 56.0 103.0 -2.4 -57.9 18 1474 09 37 55 09 38 55 =1530+239 13 08 53 56.2 103.3 -2.4 -57.8 60 1482 09 37 56 09 38 55 J1532+2344 13 08 53 56.2 103.3 -2.4 -57.8 -6 1482 09 39 01 09 39 25 =1530+239 13 09 23 56.3 103.4 -2.4 -57.7 24 1485 09 38 56 09 39 52 ARP220 13 09 50 55.8 103.3 -2.4 -57.6 18 1485 09 39 52 09 50 22 --- 13 20 21 57.9 105.7 -2.3 -56.6 630 1566 09 39 53 09 50 49 J1532+2344 13 20 49 58.5 106.0 -2.2 -56.7 18 1566 09 50 49 09 51 49 =1530+239 13 21 49 58.7 106.3 -2.2 -56.6 60 1574 09 50 50 09 51 49 J1532+2344 13 21 49 58.7 106.3 -2.2 -56.6 -6 1574 09 51 55 09 52 19 =1530+239 13 22 19 58.8 106.4 -2.2 -56.5 24 1577 09 51 50 09 52 46 ARP220 13 22 46 58.3 106.3 -2.2 -56.4 18 1577 09 52 46 10 03 16 --- 13 33 18 60.3 109.0 -2.0 -55.1 630 1658 09 52 47 Schedule for VLBA_OV (Code Ov ) 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 --- 10 03 43 J1532+2344 13 33 45 61.0 109.3 -2.0 -55.1 18 1658 10 03 43 10 05 13 =1530+239 13 35 15 61.2 109.7 -2.0 -54.9 90 1669 10 03 44 10 07 31 OQ208 13 37 33 79.0 142.1 -0.5 -33.8 93 1669 10 07 31 10 08 31 --- 13 38 33 79.2 143.0 -0.5 -33.0 60 1677 10 07 32 10 08 31 OQ208 13 38 33 79.2 143.0 -0.5 -33.0 -6 1677 10 08 37 10 12 31 --- 13 42 34 79.6 147.1 -0.4 -29.4 234 1707 10 08 32 10 14 55 J1532+2344 13 44 59 63.0 112.5 -1.8 -53.4 101 1707 10 14 55 10 15 55 =1530+239 13 45 59 63.2 112.8 -1.8 -53.2 60 1715 10 14 56 10 15 55 J1532+2344 13 45 59 63.2 112.8 -1.8 -53.2 -6 1715 10 16 01 10 16 25 =1530+239 13 46 29 63.3 113.0 -1.8 -53.2 24 1718 10 15 56 10 16 40 ARP220 13 46 45 62.8 112.8 -1.8 -53.1 6 1718 10 16 40 10 27 10 --- 13 57 16 64.7 116.1 -1.6 -51.2 630 1799 10 16 41 10 27 19 J1532+2344 13 57 25 65.3 116.5 -1.6 -51.1 0 1799 10 27 19 10 28 19 =1530+239 13 58 25 65.5 116.9 -1.6 -50.8 60 1807 10 27 11 10 28 19 J1532+2344 13 58 25 65.5 116.9 -1.6 -50.8 -6 1807 10 28 25 10 28 49 =1530+239 13 58 56 65.6 117.0 -1.6 -50.7 24 1810 10 28 20 10 28 58 ARP220 13 59 04 65.1 116.8 -1.6 -50.8 0 1810 10 28 58 10 39 28 --- 14 09 36 66.9 120.6 -1.4 -48.3 630 1891 10 28 50 10 39 37 J1532+2344 14 09 45 67.5 121.1 -1.4 -48.1 0 1891 10 39 37 10 40 37 =1530+239 14 10 45 67.6 121.5 -1.4 -47.8 60 1899 10 39 29 10 40 37 J1532+2344 14 10 45 67.6 121.5 -1.4 -47.8 -6 1899 10 40 43 10 41 07 =1530+239 14 11 15 67.7 121.7 -1.4 -47.7 24 1902 10 40 38 10 41 16 ARP220 14 11 24 67.2 121.3 -1.4 -47.8 0 1902 10 41 16 10 51 46 --- 14 21 56 69.0 125.8 -1.2 -44.7 630 1983 10 41 08 10 51 56 J1532+2344 14 22 06 69.5 126.4 -1.2 -44.4 1 1983 10 51 55 10 52 56 =1530+239 14 23 06 69.7 126.9 -1.2 -44.0 60 1991 10 51 47 10 52 56 J1532+2344 14 23 06 69.7 126.9 -1.2 -44.0 -6 1991 10 53 02 10 53 26 =1530+239 14 23 36 69.7 127.1 -1.2 -43.9 24 1994 10 52 57 10 53 36 ARP220 14 23 46 69.3 126.6 -1.2 -44.1 1 1994 10 53 35 11 04 06 --- 14 34 18 70.9 131.9 -1.0 -40.2 630 2076 10 53 27 Schedule for VLBA_OV (Code Ov ) 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 --- 11 04 17 J1532+2344 14 34 28 71.4 132.7 -1.0 -39.7 2 2076 11 04 17 11 05 47 =1530+239 14 35 59 71.6 133.5 -1.0 -39.1 90 2087 11 04 18 11 08 13 OQ208 14 38 25 79.1 217.8 0.5 33.7 80 2087 11 08 13 11 09 13 --- 14 39 26 78.9 218.8 0.5 34.5 60 2095 11 08 14 11 09 13 OQ208 14 39 26 78.9 218.8 0.5 34.5 -6 2095 11 09 19 11 13 13 --- 14 43 26 78.4 222.4 0.6 37.6 234 2125 11 09 14 11 15 24 J1532+2344 14 45 38 72.9 139.4 -0.8 -34.5 64 2125 11 15 24 11 16 24 =1530+239 14 46 38 73.1 140.0 -0.8 -34.0 60 2133 11 15 25 11 16 24 J1532+2344 14 46 38 73.1 140.0 -0.8 -34.0 -6 2133 11 16 30 11 16 54 =1530+239 14 47 08 73.1 140.3 -0.8 -33.7 24 2136 11 16 25 11 17 05 ARP220 14 47 19 72.7 139.5 -0.8 -34.3 2 2136 11 17 05 11 27 35 --- 14 57 51 73.9 146.7 -0.6 -28.5 630 2217 11 17 06 11 27 46 J1532+2344 14 58 01 74.4 148.0 -0.6 -27.4 2 2217 11 27 46 11 28 46 =1530+239 14 59 02 74.5 148.8 -0.6 -26.8 60 2225 11 27 47 11 28 46 J1532+2344 14 59 02 74.5 148.8 -0.6 -26.8 -6 2225 11 28 52 11 29 16 =1530+239 14 59 32 74.6 149.2 -0.6 -26.4 24 2228 11 28 47 11 29 26 ARP220 14 59 42 74.1 148.0 -0.6 -27.3 2 2228 11 29 26 11 39 56 --- 15 10 14 75.1 156.4 -0.4 -20.3 630 2309 11 29 27 11 40 07 J1532+2344 15 10 24 75.5 158.1 -0.4 -18.9 2 2309 11 40 07 11 41 07 =1530+239 15 11 25 75.6 159.0 -0.4 -18.2 60 2317 11 40 08 11 41 07 J1532+2344 15 11 25 75.6 159.0 -0.4 -18.2 -6 2317 11 41 13 11 41 37 =1530+239 15 11 55 75.6 159.4 -0.4 -17.8 24 2320 11 41 08 11 41 47 ARP220 15 12 05 75.3 158.0 -0.4 -19.0 1 2320 11 41 47 11 52 17 --- 15 22 37 75.9 167.3 -0.2 -11.0 630 2401 11 41 48 11 52 27 J1532+2344 15 22 47 76.2 169.4 -0.2 -9.2 1 2401 11 52 27 11 53 27 =1530+239 15 23 47 76.3 170.3 -0.2 -8.4 60 2409 11 52 28 11 53 27 J1532+2344 15 23 47 76.3 170.3 -0.2 -8.4 -6 2409 11 53 33 11 53 57 =1530+239 15 24 18 76.3 170.8 -0.2 -8.0 24 2412 11 53 28 11 54 08 ARP220 15 24 28 76.0 169.1 -0.2 -9.5 1 2412 11 54 08 12 04 38 --- 15 35 00 76.2 179.1 -0.0 -0.8 630 2493 11 54 09 Schedule for VLBA_OV (Code Ov ) 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 --- 12 04 48 J1532+2344 15 35 10 76.4 181.3 0.0 1.2 1 2493 12 04 48 12 06 18 =1530+239 15 36 40 76.4 182.8 0.0 2.4 90 2505 12 04 49 12 07 26 OQ208 15 37 48 69.2 251.2 1.5 58.9 11 2505 12 07 26 12 08 26 --- 15 38 48 69.0 251.5 1.5 59.1 60 2512 12 07 27 12 08 26 OQ208 15 38 48 69.0 251.5 1.5 59.1 -6 2512 12 08 32 12 12 26 --- 15 42 49 68.3 252.8 1.6 59.8 234 2542 12 08 27 12 13 28 J1532+2344 15 43 51 76.3 189.7 0.2 8.5 9 2542 12 13 28 12 14 28 =1530+239 15 44 51 76.2 190.7 0.2 9.3 60 2550 12 13 29 12 14 28 J1532+2344 15 44 51 76.2 190.7 0.2 9.3 -6 2550 12 14 34 12 14 58 =1530+239 15 45 21 76.2 191.2 0.2 9.7 24 2553 12 14 29 12 15 07 ARP220 15 45 31 76.0 189.1 0.2 7.9 0 2553 12 15 07 12 25 37 --- 15 56 03 75.5 198.7 0.3 16.2 630 2634 12 14 59 12 25 47 J1532+2344 15 56 12 75.6 201.1 0.4 18.2 0 2634 12 25 47 12 26 47 =1530+239 15 57 12 75.5 201.9 0.4 19.0 60 2642 12 25 38 12 26 47 J1532+2344 15 57 12 75.5 201.9 0.4 19.0 -6 2642 12 26 53 12 27 17 =1530+239 15 57 42 75.5 202.4 0.4 19.3 24 2645 12 26 48 12 27 26 ARP220 15 57 52 75.4 200.3 0.4 17.6 0 2645 12 27 26 12 37 56 --- 16 08 24 74.5 209.0 0.5 24.9 630 2726 12 27 18 12 38 06 J1532+2344 16 08 33 74.5 211.2 0.6 26.8 0 2726 12 38 06 12 39 06 =1530+239 16 09 33 74.4 212.0 0.6 27.4 60 2734 12 37 57 12 39 06 J1532+2344 16 09 33 74.4 212.0 0.6 27.4 -6 2734 12 39 12 12 39 36 =1530+239 16 10 03 74.4 212.4 0.6 27.7 24 2737 12 39 07 12 39 45 ARP220 16 10 12 74.4 210.4 0.6 26.1 0 2737 12 39 45 12 50 15 --- 16 20 44 73.2 218.0 0.7 32.3 630 2818 12 39 37 12 50 24 J1532+2344 16 20 53 73.1 220.0 0.8 33.9 0 2818 12 50 24 12 51 24 =1530+239 16 21 54 72.9 220.6 0.8 34.5 60 2826 12 50 16 12 51 24 J1532+2344 16 21 54 72.9 220.6 0.8 34.5 -6 2826 12 51 30 12 51 54 =1530+239 16 22 24 72.9 220.9 0.8 34.7 24 2829 12 51 25 12 52 03 ARP220 16 22 33 73.0 219.2 0.8 33.2 0 2829 12 52 03 13 02 33 --- 16 33 05 71.5 225.6 1.0 38.3 630 2910 12 51 55 Schedule for VLBA_OV (Code Ov ) 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 --- 13 02 42 J1532+2344 16 33 14 71.4 227.4 1.0 39.8 0 2910 13 02 42 13 04 12 =1530+239 16 34 44 71.2 228.2 1.0 40.4 90 2922 13 02 34 13 05 11 OQ208 16 35 43 57.9 264.8 2.5 64.3 23 2922 13 05 11 13 06 11 --- 16 36 43 57.7 265.0 2.5 64.3 60 2930 13 05 12 13 06 11 OQ208 16 36 43 57.7 265.0 2.5 64.3 -6 2930 13 06 17 13 10 11 --- 16 40 44 56.9 265.7 2.5 64.4 234 2960 13 06 12 13 11 15 J1532+2344 16 41 47 70.1 231.8 1.1 43.1 28 2960 13 11 15 13 12 15 =1530+239 16 42 48 69.9 232.3 1.2 43.5 60 2967 13 11 16 13 12 15 J1532+2344 16 42 48 69.9 232.3 1.2 43.5 -6 2967 13 12 21 13 12 45 =1530+239 16 43 18 69.8 232.6 1.2 43.6 24 2971 13 12 16 13 12 53 ARP220 16 43 26 70.0 231.1 1.1 42.5 0 2971 13 12 53 13 23 23 --- 16 53 58 68.3 236.0 1.3 46.0 630 3052 13 12 46 13 23 32 J1532+2344 16 54 07 68.1 237.4 1.3 47.1 0 3052 13 23 32 13 24 32 =1530+239 16 55 07 67.9 237.8 1.4 47.4 60 3059 13 23 24 13 24 32 J1532+2344 16 55 07 67.9 237.8 1.4 47.4 -6 3059 13 24 38 13 25 02 =1530+239 16 55 37 67.8 238.0 1.4 47.5 24 3063 13 24 33 13 25 11 ARP220 16 55 46 68.0 236.7 1.3 46.5 0 3063 13 25 11 13 35 41 --- 17 06 18 66.2 240.9 1.5 49.3 630 3144 13 25 03 13 35 50 J1532+2344 17 06 26 66.0 242.2 1.5 50.2 0 3144 13 35 49 13 36 50 =1530+239 17 07 27 65.8 242.5 1.6 50.5 60 3151 13 35 42 13 36 50 J1532+2344 17 07 27 65.8 242.5 1.6 50.5 -6 3151 13 36 56 13 37 20 =1530+239 17 07 57 65.7 242.7 1.6 50.6 24 3155 13 36 51 13 37 28 ARP220 17 08 05 65.9 241.6 1.5 49.7 0 3155 13 37 28 13 47 58 --- 17 18 37 64.0 245.2 1.7 51.9 630 3236 13 37 21 13 48 08 J1532+2344 17 18 46 63.7 246.3 1.7 52.8 1 3236 13 48 07 13 49 08 =1530+239 17 19 47 63.6 246.6 1.8 52.9 60 3244 13 47 59 13 49 08 J1532+2344 17 19 47 63.6 246.6 1.8 52.9 -6 3244 13 49 14 13 49 38 =1530+239 17 20 17 63.5 246.8 1.8 53.0 24 3247 13 49 09 13 49 47 ARP220 17 20 26 63.7 245.7 1.7 52.3 1 3247 13 49 46 14 00 17 --- 17 30 58 61.8 248.9 1.9 54.1 630 3328 13 49 39 Schedule for VLBA_OV (Code Ov ) 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 --- 14 00 27 J1532+2344 17 31 08 61.5 250.0 2.0 54.7 2 3328 14 00 27 14 01 57 =1530+239 17 32 38 61.2 250.4 2.0 55.0 90 3340 14 00 28 14 03 23 OQ208 17 34 05 46.3 273.9 3.4 64.5 48 3340 14 03 23 14 04 23 --- 17 35 05 46.1 274.0 3.5 64.5 60 3347 14 03 24 14 04 23 OQ208 17 35 05 46.1 274.0 3.5 64.5 -6 3347 14 04 29 14 08 23 --- 17 39 05 45.3 274.5 3.5 64.4 234 3377 14 04 24 14 09 46 J1532+2344 17 40 28 59.7 252.4 2.1 56.0 44 3377 14 09 46 14 10 46 =1530+239 17 41 29 59.5 252.7 2.1 56.1 60 3385 14 09 47 14 10 46 J1532+2344 17 41 29 59.5 252.7 2.1 56.1 -6 3385 14 10 52 14 11 16 =1530+239 17 41 59 59.4 252.8 2.1 56.1 24 3388 14 10 47 14 11 27 ARP220 17 42 10 59.7 251.9 2.1 55.6 3 3388 14 11 27 14 21 57 --- 17 52 41 57.7 254.5 2.3 56.7 630 3469 14 11 28 14 22 10 J1532+2344 17 52 54 57.3 255.4 2.3 57.3 5 3469 14 22 10 14 23 10 =1530+239 17 53 54 57.1 255.7 2.3 57.4 60 3477 14 22 11 14 23 10 J1532+2344 17 53 54 57.1 255.7 2.3 57.4 -6 3477 14 23 16 14 23 40 =1530+239 17 54 24 57.0 255.8 2.3 57.4 24 3480 14 23 11 14 23 52 ARP220 17 54 37 57.3 255.0 2.3 56.9 5 3480 14 23 52 14 34 22 --- 18 05 09 55.3 257.3 2.5 57.8 630 3561 14 23 53 14 34 36 J1532+2344 18 05 22 54.9 258.2 2.5 58.3 5 3561 14 34 36 14 35 36 =1530+239 18 06 22 54.7 258.4 2.5 58.4 60 3569 14 34 37 14 35 36 J1532+2344 18 06 22 54.7 258.4 2.5 58.4 -6 3569 14 35 42 14 36 06 =1530+239 18 06 52 54.6 258.5 2.6 58.4 24 3572 14 35 37 14 36 18 ARP220 18 07 05 54.9 257.7 2.5 58.0 4 3572 14 36 18 14 46 48 --- 18 17 36 52.8 259.9 2.7 58.7 630 3653 14 36 19 14 46 58 J1532+2344 18 17 46 52.5 260.7 2.7 59.1 2 3653 14 46 56 14 47 58 =1530+239 18 18 46 52.3 260.9 2.7 59.1 60 3661 14 46 49 14 47 58 J1532+2344 18 18 46 52.3 260.9 2.7 59.1 -6 3661 14 48 04 14 48 28 =1530+239 18 19 17 52.2 260.9 2.8 59.1 24 3664 14 47 59 14 48 37 ARP220 18 19 26 52.5 260.2 2.7 58.8 1 3664 14 48 36 14 59 07 --- 18 29 58 50.4 262.2 2.9 59.3 630 3746 14 48 29 Schedule for VLBA_OV (Code Ov ) Page 11 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 --- 14 59 16 J1532+2344 18 30 07 50.1 263.0 2.9 59.6 1 3746 14 59 15 15 00 46 =1530+239 18 31 37 49.8 263.2 3.0 59.7 90 3757 14 59 08 15 01 39 OQ208 18 32 30 34.8 281.4 4.4 62.5 14 3757 15 01 39 15 02 39 --- 18 33 30 34.6 281.5 4.4 62.4 60 3765 15 01 40 15 02 39 OQ208 18 33 30 34.6 281.5 4.4 62.4 -6 3765 15 02 45 15 06 39 --- 18 37 30 33.8 282.0 4.5 62.2 234 3795 15 02 40 15 07 30 J1532+2344 18 38 22 48.4 264.4 3.1 59.9 13 3795 15 07 30 15 08 30 =1530+239 18 39 22 48.2 264.6 3.1 59.9 60 3803 15 07 31 15 08 30 J1532+2344 18 39 22 48.2 264.6 3.1 59.9 -6 3803 15 08 36 15 09 00 =1530+239 18 39 53 48.1 264.7 3.1 59.9 24 3806 15 08 31 15 09 09 ARP220 18 40 01 48.4 264.0 3.1 59.7 1 3806 15 09 09 15 19 39 --- 18 50 33 46.3 265.8 3.2 59.9 630 3887 15 09 01 15 19 48 J1532+2344 18 50 42 46.0 266.5 3.3 60.2 1 3887 15 19 48 15 20 48 =1530+239 18 51 42 45.8 266.7 3.3 60.2 60 3895 15 19 40 15 20 48 J1532+2344 18 51 42 45.8 266.7 3.3 60.2 -6 3895 15 20 54 15 21 18 =1530+239 18 52 12 45.7 266.7 3.3 60.2 24 3898 15 20 49 15 21 27 ARP220 18 52 21 46.0 266.1 3.3 60.0 1 3898 15 21 26 15 31 57 --- 19 02 53 43.9 267.8 3.4 60.1 630 3980 15 21 19 15 32 06 J1532+2344 19 03 02 43.5 268.5 3.5 60.3 1 3980 15 32 05 15 33 06 =1530+239 19 04 02 43.3 268.6 3.5 60.3 60 3987 15 31 58 15 33 06 J1532+2344 19 04 02 43.3 268.6 3.5 60.3 -6 3987 15 33 12 15 33 36 =1530+239 19 04 32 43.2 268.7 3.5 60.3 24 3991 15 33 07 15 33 45 ARP220 19 04 41 43.5 268.1 3.5 60.1 1 3991 15 33 44 15 44 15 --- 19 15 13 41.4 269.7 3.7 60.2 630 4072 15 33 37 15 44 24 J1532+2344 19 15 22 41.1 270.4 3.7 60.4 1 4072 15 44 23 15 45 24 =1530+239 19 16 22 40.9 270.5 3.7 60.4 60 4080 15 44 16 15 45 24 J1532+2344 19 16 22 40.9 270.5 3.7 60.4 -6 4080 15 45 30 15 45 54 =1530+239 19 16 52 40.8 270.6 3.7 60.4 24 4083 15 45 25 15 46 03 ARP220 19 17 01 41.1 270.0 3.7 60.2 1 4083 15 46 02 15 56 33 --- 19 27 33 39.0 271.6 3.9 60.2 630 4164 15 45 55 Schedule for VLBA_OV (Code Ov ) Page 12 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 --- 15 56 42 J1532+2344 19 27 42 38.6 272.2 3.9 60.3 1 4164 15 56 41 15 58 12 =1530+239 19 29 12 38.3 272.4 3.9 60.3 90 4176 15 56 34 15 59 02 OQ208 19 30 03 23.8 288.5 5.4 59.1 12 4176 15 59 02 16 00 02 --- 19 31 03 23.6 288.6 5.4 59.0 60 4184 15 59 03 16 00 02 OQ208 19 31 03 23.6 288.6 5.4 59.0 -6 4184 16 00 08 16 04 02 --- 19 35 04 22.8 289.1 5.4 58.7 234 4214 16 00 03 16 04 52 J1532+2344 19 35 53 37.0 273.4 4.0 60.2 12 4214 16 04 52 16 05 52 =1530+239 19 36 53 36.8 273.5 4.1 60.2 60 4221 16 04 53 16 05 52 J1532+2344 19 36 53 36.8 273.5 4.1 60.2 -6 4221 16 05 58 16 06 22 =1530+239 19 37 23 36.7 273.6 4.1 60.2 24 4224 16 05 53 16 06 31 ARP220 19 37 32 37.0 273.0 4.0 60.1 1 4224 16 06 30 16 17 01 --- 19 48 04 34.9 274.5 4.2 59.9 630 4306 16 06 23 16 17 09 J1532+2344 19 48 13 34.5 275.1 4.2 60.0 1 4306 16 17 09 16 18 09 =1530+239 19 49 13 34.3 275.2 4.3 60.0 60 4314 16 17 02 16 18 09 J1532+2344 19 49 13 34.3 275.2 4.3 60.0 -6 4314 16 18 15 16 18 39 =1530+239 19 49 43 34.2 275.3 4.3 59.9 24 4317 16 18 10 16 18 48 ARP220 19 49 52 34.5 274.8 4.2 59.8 1 4317 16 18 48 16 29 18 --- 20 00 24 32.4 276.2 4.4 59.6 630 4398 16 18 40 16 29 27 J1532+2344 20 00 33 32.1 276.8 4.4 59.7 1 4398 16 29 27 16 29 57 =1530+239 20 01 03 32.0 276.9 4.5 59.7 30 4402 16 29 19 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.L1024glob Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: v20cm_2 FD filtered above 1760. SC filtered above 1740. Setup group: 9 Station: VLBA_OV Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U U U U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 14.6 2.4 14.6 The following frequency sets based on these setups were used. See the crd files for VLBA legacy system setups and pcal detection details. Frequency Set: 18 Setup file default. Used with PCAL = off LO sum= 1594.00 1594.00 1626.00 1626.00 1658.00 1658.00 1690.00 1690.00 BBC fr= 806.00 806.00 774.00 774.00 742.00 742.00 710.00 710.00 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 VLBA legacy crd files using 4 channels based on RDBE channels: 3 4 5 6 CRD fr= 766.00 766.00 734.00 734.00 CRD bw= 16.00 16.00 16.00 16.00 Matching frequency sets: 18 19 20 21 22 23 24 25 26 27 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