COVER INFORMATION Station: HART (Code Hh ) Experiment: 6cm global VLBI observations of Arp220 Exp. Code: GV022B Schedule Version: 3.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: Eskil Varenius Address: Department of Earth and Space Sciences, Chalmers University of T Onsala Space Observatory 439 92 Onsala Sweden Phone: +46 31 772 55 45 EMAIL: varenius@chalmers.se Fax: +46(0)31 772 5590 Phone during observation: +46 31 772 55 45 Observing mode: 6cm 2Gbps global VLBI with phased C-array VLA Notes: Phase calibrator: J1532+2344 Fringe finder / pol. cal / bandpass cal: J1516+1932 VLA phase-up calibrator: J1516+1932 Schedule for HART (Code Hh ) Page 2 6cm global VLBI observations of Arp220 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 7 Jun 2017 Day 158 --- ---------- pre-VLA block ---------- Next scan frequencies: 4772.25 4772.25 4772.25 4772.25 4836.25 4836.25 4836.25 4836.25 4900.25 4900.25 4900.25 4900.25 4964.25 4964.25 4964.25 4964.25 Next BBC frequencies: 172.25 172.25 172.25 172.25 236.25 236.25 236.25 236.25 300.25 300.25 300.25 300.25 364.25 364.25 364.25 364.25 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 J1516+1932 15 56 32 43.7 347.3 0.6 0.0 0 0 21 00 00 21 03 00 =1514+197 15 59 32 43.5 346.4 0.7 0.0 180 46 21 00 01 21 04 01 J1532+2344 16 00 34 40.0 351.9 0.5 0.0 26 46 21 04 01 21 05 31 =1530+239 16 02 14 39.9 351.4 0.5 0.0 90 70 21 04 02 21 05 57 ARP220 16 02 29 40.2 351.9 0.4 0.0 0 70 21 05 57 21 10 27 --- 16 07 00 40.1 350.6 0.5 0.0 270 139 21 05 58 21 11 02 J1532+2344 16 07 36 39.8 349.8 0.6 0.0 10 139 21 11 02 21 12 32 =1530+239 16 09 16 39.7 349.4 0.6 0.0 90 162 21 11 03 21 12 58 ARP220 16 09 32 40.0 349.9 0.6 0.0 0 162 21 12 58 21 17 28 --- 16 14 03 39.8 348.5 0.6 0.0 270 232 21 12 59 21 18 04 J1532+2344 16 14 38 39.4 347.8 0.7 0.0 10 232 21 18 04 21 19 34 =1530+239 16 16 19 39.4 347.3 0.7 0.0 90 255 21 18 05 21 19 59 ARP220 16 16 34 39.7 347.8 0.7 0.0 0 255 21 19 59 21 24 29 --- 16 21 05 39.5 346.5 0.8 0.0 270 325 21 20 00 21 25 05 J1532+2344 16 21 41 39.1 345.8 0.8 0.0 10 325 21 25 05 21 26 35 =1530+239 16 23 21 39.0 345.3 0.8 0.0 90 348 21 25 06 21 27 01 ARP220 16 23 37 39.3 345.8 0.8 0.0 0 348 21 27 01 21 31 31 --- 16 28 08 39.1 344.5 0.9 0.0 270 417 21 27 02 21 32 06 J1532+2344 16 28 43 38.7 343.8 0.9 0.0 10 417 21 32 06 21 33 36 =1530+239 16 30 24 38.6 343.3 0.9 0.0 90 441 21 32 07 21 34 02 ARP220 16 30 39 38.9 343.7 0.9 0.0 0 441 21 34 02 21 38 32 --- 16 35 10 38.6 342.5 1.0 0.0 270 510 21 34 03 21 39 08 J1532+2344 16 35 46 38.2 341.8 1.0 0.0 10 510 21 39 08 21 40 38 =1530+239 16 37 26 38.1 341.3 1.1 0.0 90 533 21 39 09 Schedule for HART (Code Hh ) Page 3 6cm global VLBI observations of Arp220 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 7 Jun 2017 Day 158 --- 21 41 03 ARP220 16 37 42 38.4 341.8 1.0 0.0 0 533 21 41 03 21 45 33 --- 16 42 12 38.1 340.5 1.1 0.0 270 603 21 41 04 21 46 09 J1532+2344 16 42 48 37.7 339.9 1.2 0.0 10 603 21 46 09 21 47 39 =1530+239 16 44 29 37.5 339.4 1.2 0.0 90 626 21 46 10 21 48 05 ARP220 16 44 44 37.9 339.8 1.2 0.0 0 626 21 48 05 21 52 35 --- 16 49 15 37.6 338.6 1.2 0.0 270 696 21 48 06 ---------- 2nd rpt7 (6+1) + rpt5 (1+2+2) ---------- 21 53 36 J1516+1932 16 50 16 39.4 331.4 1.5 0.0 25 696 21 53 36 21 56 26 =1514+197 16 53 17 39.0 330.6 1.6 0.0 170 739 21 53 37 21 57 23 J1532+2344 16 54 04 36.7 336.8 1.3 0.0 21 739 21 57 23 21 58 53 =1530+239 16 55 44 36.6 336.4 1.4 0.0 90 763 21 57 24 21 59 18 ARP220 16 56 00 37.0 336.8 1.3 0.0 0 763 21 59 18 22 03 18 --- 17 00 00 36.6 335.7 1.4 0.0 240 824 21 59 19 22 03 54 J1532+2344 17 00 36 36.1 335.1 1.5 0.0 10 824 22 03 54 22 05 24 =1530+239 17 02 17 36.0 334.7 1.5 0.0 90 848 22 03 55 22 05 50 ARP220 17 02 32 36.4 335.1 1.4 0.0 0 848 22 05 50 22 09 50 --- 17 06 33 36.0 334.0 1.5 0.0 240 909 22 05 51 22 10 25 J1532+2344 17 07 09 35.5 333.5 1.6 0.0 10 909 22 10 25 22 11 55 =1530+239 17 08 49 35.3 333.0 1.6 0.0 90 933 22 10 26 22 12 21 ARP220 17 09 05 35.7 333.4 1.6 0.0 0 933 22 12 21 22 16 21 --- 17 13 05 35.3 332.4 1.6 0.0 240 994 22 12 22 22 16 57 J1532+2344 17 13 41 34.8 331.8 1.7 0.0 10 994 22 16 57 22 18 27 =1530+239 17 15 21 34.6 331.4 1.7 0.0 90 1018 22 16 58 22 18 52 ARP220 17 15 37 35.1 331.8 1.7 0.0 0 1018 22 18 52 22 22 52 --- 17 19 38 34.6 330.8 1.7 0.0 240 1080 22 18 53 22 23 28 J1532+2344 17 20 13 34.1 330.2 1.8 0.0 10 1080 22 23 28 22 24 58 =1530+239 17 21 54 33.9 329.8 1.8 0.0 90 1103 22 23 29 22 25 23 ARP220 17 22 09 34.3 330.2 1.8 0.0 0 1103 22 25 23 22 29 23 --- 17 26 10 33.9 329.2 1.8 0.0 240 1165 22 25 24 Schedule for HART (Code Hh ) Page 4 6cm global VLBI observations of Arp220 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 7 Jun 2017 Day 158 --- 22 29 59 J1532+2344 17 26 46 33.4 328.7 1.9 0.0 10 1165 22 29 59 22 31 29 =1530+239 17 28 26 33.2 328.3 1.9 0.0 90 1188 22 30 00 22 31 55 ARP220 17 28 42 33.6 328.6 1.9 0.0 0 1188 22 31 55 22 35 55 --- 17 32 42 33.1 327.6 1.9 0.0 240 1250 22 31 56 22 36 30 J1532+2344 17 33 18 32.6 327.1 2.0 0.0 10 1250 22 36 30 22 38 00 =1530+239 17 34 58 32.4 326.8 2.0 0.0 90 1273 22 36 31 22 38 26 ARP220 17 35 14 32.8 327.1 2.0 0.0 0 1273 22 38 26 22 42 26 --- 17 39 15 32.3 326.1 2.1 0.0 240 1335 22 38 27 22 43 02 J1532+2344 17 39 50 31.8 325.7 2.1 0.0 10 1335 22 43 02 22 44 32 =1530+239 17 41 31 31.6 325.3 2.1 0.0 90 1358 22 43 03 22 44 57 ARP220 17 41 46 32.0 325.6 2.1 0.0 0 1358 22 44 57 22 48 57 --- 17 45 47 31.5 324.7 2.2 0.0 240 1420 22 44 58 22 49 33 J1532+2344 17 46 23 30.9 324.2 2.2 0.0 10 1420 22 49 33 22 51 03 =1530+239 17 48 03 30.7 323.9 2.2 0.0 90 1443 22 49 34 22 51 29 ARP220 17 48 19 31.1 324.1 2.2 0.0 0 1443 22 51 29 22 55 29 --- 17 52 19 30.6 323.2 2.3 0.0 240 1505 22 51 30 22 56 04 J1532+2344 17 52 55 30.1 322.8 2.3 0.0 10 1505 22 56 04 22 57 34 =1530+239 17 54 35 29.8 322.5 2.4 0.0 90 1528 22 56 05 22 58 00 ARP220 17 54 51 30.3 322.7 2.3 0.0 0 1528 22 58 00 23 02 00 --- 17 58 52 29.7 321.9 2.4 0.0 240 1590 22 58 01 23 02 36 J1532+2344 17 59 28 29.2 321.4 2.4 0.0 10 1590 23 02 36 23 04 06 =1530+239 18 01 08 28.9 321.1 2.5 0.0 90 1613 23 02 37 23 04 31 ARP220 18 01 23 29.4 321.3 2.4 0.0 0 1613 23 04 31 23 08 31 --- 18 05 24 28.8 320.5 2.5 0.0 240 1675 23 04 32 23 09 07 J1532+2344 18 06 00 28.2 320.1 2.5 0.0 10 1675 23 09 07 23 10 37 =1530+239 18 07 40 28.0 319.8 2.6 0.0 90 1698 23 09 08 23 11 03 ARP220 18 07 56 28.4 320.0 2.5 0.0 0 1698 23 11 03 23 15 03 --- 18 11 57 27.9 319.2 2.6 0.0 240 1760 23 11 04 Schedule for HART (Code Hh ) Page 5 6cm global VLBI observations of Arp220 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 7 Jun 2017 Day 158 --- ---------- 1st post-VLA block (no Yy) ---------- 23 15 56 J1516+1932 18 12 50 27.8 312.5 2.9 0.0 17 1760 23 15 56 23 18 46 =1514+197 18 15 50 27.3 311.9 3.0 0.0 170 1803 23 15 57 23 19 38 J1532+2344 18 16 33 26.7 318.0 2.7 0.0 17 1803 23 19 38 23 21 08 =1530+239 18 18 13 26.4 317.7 2.7 0.0 90 1827 23 19 39 23 21 34 ARP220 18 18 29 26.9 317.9 2.7 0.0 0 1827 23 21 34 23 25 34 --- 18 22 30 26.3 317.1 2.8 0.0 240 1888 23 21 35 23 26 10 J1532+2344 18 23 05 25.7 316.8 2.8 0.0 10 1888 23 26 10 23 27 40 =1530+239 18 24 46 25.4 316.5 2.9 0.0 90 1912 23 26 11 23 28 05 ARP220 18 25 01 25.9 316.6 2.8 0.0 0 1912 23 28 05 23 32 05 --- 18 29 02 25.3 315.9 2.9 0.0 240 1974 23 28 06 ---------- 2nd post-VLA block ---------- 23 32 41 J1532+2344 18 29 38 24.6 315.6 2.9 0.0 10 1974 23 32 41 23 34 11 =1530+239 18 31 18 24.4 315.2 3.0 0.0 90 1997 23 32 42 23 34 37 ARP220 18 31 34 24.9 315.4 2.9 0.0 0 1997 23 34 37 23 38 37 --- 18 35 34 24.2 314.7 3.0 0.0 240 2059 23 34 38 23 39 12 J1532+2344 18 36 10 23.6 314.4 3.0 0.0 10 2059 23 39 12 23 40 32 =1530+239 18 37 40 23.4 314.1 3.1 0.0 80 2079 23 39 13 23 40 58 ARP220 18 37 56 23.8 314.3 3.0 0.0 0 2079 23 40 58 23 44 58 --- 18 41 57 23.2 313.6 3.1 0.0 240 2141 23 40 59 23 45 34 J1532+2344 18 42 33 22.6 313.3 3.2 0.0 10 2141 23 45 34 23 46 54 =1530+239 18 44 03 22.3 313.0 3.2 0.0 80 2162 23 45 35 23 47 19 ARP220 18 44 18 22.8 313.1 3.1 0.0 0 2162 23 47 19 23 51 19 --- 18 48 19 22.1 312.5 3.2 0.0 240 2223 23 47 20 23 52 13 J1516+1932 18 49 13 21.5 306.1 3.5 0.0 18 2223 23 52 13 23 53 13 =1514+197 18 50 24 21.3 305.9 3.5 0.0 60 2239 23 52 14 23 53 45 J1516+1932 18 50 45 21.2 305.9 3.6 0.0 10 2239 23 53 45 23 55 35 =1514+197 18 52 45 20.8 305.6 3.6 0.0 110 2267 23 53 46 23 56 28 J1532+2344 18 53 29 20.8 311.4 3.3 0.0 18 2267 23 56 28 23 57 58 =1530+239 18 55 09 20.5 311.1 3.4 0.0 90 2290 23 56 29 Schedule for HART (Code Hh ) Page 6 6cm global VLBI observations of Arp220 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: Wed 7 Jun 2017 Day 158 -- Stop: Thu 8 Jun 2017 Day 159 --- 23 58 24 ARP220 18 55 25 21.0 311.3 3.3 0.0 0 2290 23 58 24 00 02 24 --- 18 59 25 20.3 310.6 3.4 0.0 240 2352 23 58 25 00 02 59 J1532+2344 19 00 01 19.6 310.3 3.4 0.0 10 2352 00 02 59 00 04 29 =1530+239 19 01 41 19.4 310.1 3.5 0.0 90 2375 00 03 00 00 04 55 ARP220 19 01 57 19.8 310.2 3.4 0.0 0 2375 00 04 55 00 08 55 --- 19 05 58 19.1 309.5 3.5 0.0 240 2437 00 04 56 00 09 31 J1532+2344 19 06 34 18.5 309.3 3.6 0.0 10 2437 00 09 31 00 11 01 =1530+239 19 08 14 18.2 309.0 3.6 0.0 90 2460 00 09 32 00 11 26 ARP220 19 08 29 18.7 309.1 3.5 0.0 0 2460 00 11 26 00 15 26 --- 19 12 30 18.0 308.5 3.6 0.0 240 2522 00 11 27 00 16 02 J1532+2344 19 13 06 17.4 308.3 3.7 0.0 10 2522 00 16 02 00 17 32 =1530+239 19 14 46 17.1 308.0 3.7 0.0 90 2545 00 16 03 00 17 58 ARP220 19 15 02 17.6 308.1 3.7 0.0 0 2545 00 17 58 00 21 58 --- 19 19 02 16.8 307.5 3.7 0.0 240 2607 00 17 59 00 22 33 J1532+2344 19 19 38 16.2 307.3 3.8 0.0 10 2607 00 22 33 00 24 03 =1530+239 19 21 19 15.9 307.0 3.8 0.0 90 2630 00 22 34 00 24 29 ARP220 19 21 34 16.4 307.1 3.8 0.0 0 2630 00 24 29 00 28 29 --- 19 25 35 15.7 306.6 3.8 0.0 240 2692 00 24 30 00 29 23 J1516+1932 19 26 30 14.5 300.5 4.1 0.0 18 2692 00 29 23 00 30 23 =1514+197 19 27 40 14.3 300.4 4.2 0.0 60 2708 00 29 24 00 30 55 J1516+1932 19 28 01 14.2 300.3 4.2 0.0 10 2708 00 30 55 00 32 45 =1514+197 19 30 02 13.8 300.1 4.2 0.0 110 2736 00 30 56 00 33 38 J1532+2344 19 30 45 14.2 305.7 4.0 0.0 18 2736 00 33 38 00 34 58 =1530+239 19 32 15 13.9 305.5 4.0 0.0 80 2757 00 33 39 00 35 24 ARP220 19 32 31 14.4 305.5 3.9 0.0 0 2757 00 35 24 00 39 24 --- 19 36 32 13.7 305.0 4.0 0.0 240 2819 00 35 25 00 40 00 J1532+2344 19 37 08 13.0 304.8 4.1 0.0 10 2819 00 40 00 00 41 20 =1530+239 19 38 38 12.7 304.6 4.1 0.0 80 2839 00 40 01 00 41 45 ARP220 19 38 53 13.2 304.7 4.1 0.0 0 2839 00 41 45 00 45 45 --- 19 42 54 12.5 304.1 4.1 0.0 240 2901 00 41 46 Schedule for HART (Code Hh ) Page 7 6cm global VLBI observations of Arp220 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 8 Jun 2017 Day 159 --- 00 46 21 J1532+2344 19 43 30 11.8 303.9 4.2 0.0 10 2901 00 46 21 00 47 51 =1530+239 19 45 10 11.5 303.7 4.2 0.0 90 2924 00 46 22 00 48 17 ARP220 19 45 26 12.0 303.8 4.2 0.0 0 2924 00 48 17 00 52 17 --- 19 49 27 11.3 303.2 4.2 0.0 240 2986 00 48 18 00 52 52 J1532+2344 19 50 02 10.6 303.0 4.3 0.0 10 2986 00 52 52 00 54 22 =1530+239 19 51 43 10.3 302.8 4.3 0.0 90 3009 00 52 53 00 54 48 ARP220 19 51 58 10.8 302.9 4.3 0.0 0 3009 00 54 48 00 58 48 --- 19 55 59 10.0 302.3 4.3 0.0 240 3071 00 54 49 00 59 24 J1532+2344 19 56 35 9.4 302.2 4.4 0.0 10 3071 00 59 24 01 00 54 =1530+239 19 58 15 9.1 302.0 4.4 0.0 90 3094 00 59 25 01 01 15 ARP220 19 58 26 9.6 302.0 4.4 0.0 -4 3094 01 01 15 01 05 15 --- 20 02 27 8.8 301.5 4.4 H 0.0 0 3156 01 01 16 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess217.C2048glob Matching groups in /home/guest/rmc/SCHED/sched11.4/catalogs/freq_RDBE.dat: hh6cm Values confirmed by E-mail Jonathan Quick 20140219 (CR) ****** Only 256.00 of 512.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 18 Station: HART Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 3 11 3 11 5 13 5 13 7 15 7 15 BBC SB= L L U U L L U U L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 B2 C1 B2 C1 B2 C1 B2 C1 The following frequency sets based on these setups were used. Frequency Set: 13 Setup file default. Used with PCAL = off LO sum= 4772.25 4772.25 4772.25 4772.25 4836.25 4836.25 4836.25 4836.25 4900.25 4900.25 4900.25 4900.25 4964.25 4964.25 4964.25 4964.25 BBC fr= 172.25 172.25 172.25 172.25 236.25 236.25 236.25 236.25 300.25 300.25 300.25 300.25 364.25 364.25 364.25 364.25 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: 13 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) * ARP220 15 32 46.905485 * 15 34 57.250000 15 35 43.359734 0.00 23 40 07.75728 * 23 30 11.33000 23 26 55.86293 0.00 From catalog imbedded in main SCHED input file. Pos. from Batejat. et al 2011 * 3C286 13 28 49.657758 * 13 31 08.288051 13 31 56.602521 0.18 J1331+3030 30 45 58.64059 * 30 30 32.95924 30 25 24.79116 0.17 1328+307 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc J1331+30 GSFC 2015a astro solution, unpublished 225 observations. 1514+197 15 14 40.985840 * 15 16 56.796162 15 17 44.720916 0.01 * J1516+1932 19 43 10.94252 * 19 32 12.99209 19 28 35.77580 0.02 J1516+19 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 2699 observations. 1530+239 15 30 36.092767 * 15 32 46.345222 15 33 32.415948 0.10 * J1532+2344 23 54 09.32921 * 23 44 05.26804 23 40 47.21139 0.17 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 90 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 sess217.C2048glob 1 2 3 4 5 6 7 8 9 10 13 15 + 6.750 962.311 3C286 sess217.C2048glob 22 0.067 0.000 J1516+1932 sess217.C2048glob 1 2 3 4 5 6 7 8 9 10 13 15 + 1.456 115.850 J1532+2344 sess217.C2048glob 1 2 3 4 5 6 7 8 9 10 13 15 + 2.541 356.089 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 128.8 3C286 106.0 J1516+1932 130.1 J1532+2344 128.3 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