COVER INFORMATION Station: JB2_MERL (Code Jm ) Experiment: Confirmation of close dual quasars at z=0.6-2.5 Exp. Code: ES103C Schedule Version: 3.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Yiping SHU Address: Purple Mountain Observatory, Chinese Academy of Sciences No. 10 Yuanhua Road Nanjing China Phone: +86 15946854256 EMAIL: yiping.shu@pmo.ac.cn Fax: Phone during observation: +86 15946854256 Observing mode: vlbi Notes: # Please turn PHASE CAL ON # v3: shorter phase-ref cycle [5min vice 8min] COVER LETTER: Schedule for JB2_MERL (Code Jm ) Page 2 Confirmation of close dual quasars at z=0.6-2.5 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 23 Oct 2022 Day 296 --- Next scan frequencies: 4926.49 4926.49 Next BBC frequencies: 737.51 737.51 Next scan bandwidths: 64.00 64.00 07 00 00 J1229+0203 08 57 31 22.7 119.9 -3.5 -31.3 0 0 07 00 00 07 05 00 =3C273B 09 02 32 23.3 121.0 -3.5 -30.9 300 19 07 00 01 07 06 00 J1308+0401 09 03 32 19.9 111.3 -4.1 -34.0 8 19 07 06 00 07 11 00 =1305+042 09 08 33 20.6 112.4 -4.0 -33.7 300 39 07 06 01 07 11 00 SDSSJ1305+05 09 08 33 22.1 112.2 -4.0 -33.8 -19 39 No stop 07 14 00 --- 09 11 33 22.5 112.8 -3.9 -33.6 161 50 07 11 01 07 14 30 J1308+0401 09 12 03 21.0 113.2 -4.0 -33.5 11 50 07 14 30 07 16 30 =1305+042 09 14 04 21.3 113.6 -3.9 -33.4 120 58 07 14 31 07 16 30 SDSSJ1305+05 09 14 04 22.9 113.4 -3.9 -33.5 -19 58 No stop 07 19 30 --- 09 17 04 23.3 114.1 -3.8 -33.3 161 70 07 16 31 07 19 30 J1308+0401 09 17 04 21.7 114.3 -3.9 -33.2 -19 70 No stop 07 21 30 =1305+042 09 19 05 22.0 114.7 -3.8 -33.0 101 77 07 19 31 07 21 30 SDSSJ1305+05 09 19 05 23.6 114.5 -3.8 -33.1 -19 77 No stop 07 24 30 --- 09 22 05 24.0 115.2 -3.7 -32.9 161 89 07 21 31 07 25 00 J1308+0401 09 22 35 22.5 115.5 -3.8 -32.8 11 89 07 25 00 07 27 00 =1305+042 09 24 36 22.8 116.0 -3.7 -32.6 120 97 07 25 01 07 27 00 SDSSJ1305+05 09 24 36 24.3 115.8 -3.7 -32.8 -19 97 No stop 07 30 00 --- 09 27 36 24.7 116.5 -3.6 -32.5 161 108 07 27 01 07 30 00 J1308+0401 09 27 36 23.2 116.7 -3.7 -32.4 -19 108 No stop 07 32 00 =1305+042 09 29 36 23.4 117.1 -3.7 -32.3 101 116 07 30 01 07 32 00 SDSSJ1305+05 09 29 36 25.0 117.0 -3.6 -32.4 -19 116 No stop 07 35 00 --- 09 32 37 25.4 117.7 -3.6 -32.2 161 128 07 32 01 07 35 30 J1308+0401 09 33 07 23.9 117.9 -3.6 -32.0 11 128 07 35 30 07 37 30 =1305+042 09 35 07 24.2 118.4 -3.6 -31.9 120 135 07 35 31 07 37 30 SDSSJ1305+05 09 35 07 25.7 118.2 -3.5 -32.0 -19 135 No stop 07 40 30 --- 09 38 08 26.1 118.9 -3.5 -31.7 161 147 07 37 31 07 40 30 J1308+0401 09 38 08 24.5 119.1 -3.5 -31.6 -19 147 No stop 07 42 30 =1305+042 09 40 08 24.8 119.6 -3.5 -31.5 101 155 07 40 31 Schedule for JB2_MERL (Code Jm ) Page 3 Confirmation of close dual quasars at z=0.6-2.5 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 23 Oct 2022 Day 296 --- 07 42 30 SDSSJ1305+05 09 40 08 26.4 119.4 -3.4 -31.6 -19 155 No stop 07 45 30 --- 09 43 09 26.8 120.1 -3.4 -31.3 161 166 07 42 31 07 46 00 J1308+0401 09 43 39 25.3 120.4 -3.4 -31.2 11 166 07 46 00 07 48 00 =1305+042 09 45 39 25.5 120.9 -3.4 -31.0 120 174 07 46 01 07 48 00 SDSSJ1305+05 09 45 39 27.1 120.7 -3.3 -31.1 -19 174 No stop 07 51 00 --- 09 48 39 27.5 121.5 -3.3 -30.8 161 185 07 48 01 07 51 00 J1308+0401 09 48 39 25.9 121.6 -3.3 -30.7 -19 185 No stop 07 53 00 =1305+042 09 50 40 26.2 122.1 -3.3 -30.6 101 193 07 51 01 07 53 00 SDSSJ1305+05 09 50 40 27.7 121.9 -3.3 -30.7 -19 193 No stop 07 56 00 --- 09 53 40 28.1 122.7 -3.2 -30.4 161 205 07 53 01 07 56 30 J1308+0401 09 54 10 26.6 122.9 -3.3 -30.2 11 205 07 56 30 07 58 30 =1305+042 09 56 11 26.9 123.4 -3.2 -30.1 120 213 07 56 31 07 58 30 SDSSJ1305+05 09 56 11 28.4 123.3 -3.2 -30.2 -19 213 No stop 08 01 30 --- 09 59 11 28.8 124.0 -3.1 -29.9 161 224 07 58 31 08 01 30 J1308+0401 09 59 11 27.2 124.1 -3.2 -29.8 -19 224 No stop 08 03 30 =1305+042 10 01 12 27.5 124.6 -3.1 -29.6 101 232 08 01 31 08 03 30 SDSSJ1305+05 10 01 12 29.0 124.5 -3.1 -29.7 -19 232 No stop 08 06 30 --- 10 04 12 29.4 125.3 -3.0 -29.4 161 243 08 03 31 08 07 00 J1308+0401 10 04 42 27.9 125.5 -3.1 -29.2 11 243 08 07 00 08 09 00 =1305+042 10 06 42 28.2 126.0 -3.0 -29.1 120 251 08 07 01 08 09 00 SDSSJ1305+05 10 06 42 29.7 125.9 -3.0 -29.1 -19 251 No stop 08 12 00 --- 10 09 43 30.1 126.6 -2.9 -28.8 161 263 08 09 01 08 12 00 J1308+0401 10 09 43 28.5 126.7 -3.0 -28.7 -19 263 No stop 08 14 00 =1305+042 10 11 43 28.8 127.2 -3.0 -28.5 101 271 08 12 01 08 14 00 SDSSJ1305+05 10 11 43 30.3 127.1 -2.9 -28.6 -19 271 No stop 08 17 00 --- 10 14 44 30.7 127.9 -2.9 -28.3 161 282 08 14 01 08 17 30 J1308+0401 10 15 14 29.2 128.1 -2.9 -28.2 11 282 08 17 30 08 19 30 =1305+042 10 17 14 29.4 128.6 -2.9 -28.0 120 290 08 17 31 08 19 30 SDSSJ1305+05 10 17 14 31.0 128.6 -2.8 -28.0 -19 290 No stop 08 22 30 --- 10 20 15 31.3 129.3 -2.8 -27.7 161 301 08 19 31 Schedule for JB2_MERL (Code Jm ) Page 4 Confirmation of close dual quasars at z=0.6-2.5 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 23 Oct 2022 Day 296 --- 08 22 30 J1308+0401 10 20 15 29.8 129.4 -2.8 -27.6 -19 301 No stop 08 24 30 =1305+042 10 22 15 30.0 129.9 -2.8 -27.4 101 309 08 22 31 08 24 30 SDSSJ1305+05 10 22 15 31.5 129.8 -2.7 -27.5 -19 309 No stop 08 27 30 --- 10 25 15 31.9 130.6 -2.7 -27.1 161 321 08 24 31 08 28 00 J1308+0401 10 25 46 30.4 130.8 -2.7 -27.0 11 321 08 28 00 08 30 00 =1305+042 10 27 46 30.6 131.3 -2.7 -26.8 120 328 08 28 01 08 30 00 SDSSJ1305+05 10 27 46 32.2 131.3 -2.6 -26.9 -19 328 No stop 08 33 00 --- 10 30 46 32.5 132.1 -2.6 -26.5 161 340 08 30 01 08 33 00 J1308+0401 10 30 46 30.9 132.1 -2.6 -26.4 -19 340 No stop 08 35 00 =1305+042 10 32 47 31.2 132.6 -2.6 -26.2 101 348 08 33 01 08 35 00 SDSSJ1305+05 10 32 47 32.7 132.6 -2.6 -26.3 -19 348 No stop 08 38 00 --- 10 35 47 33.1 133.4 -2.5 -25.9 161 359 08 35 01 08 38 30 J1308+0401 10 36 17 31.6 133.5 -2.6 -25.8 11 359 08 38 30 08 40 30 =1305+042 10 38 18 31.8 134.0 -2.5 -25.5 120 367 08 38 31 08 40 30 SDSSJ1305+05 10 38 18 33.3 134.1 -2.5 -25.6 -19 367 No stop 08 43 30 --- 10 41 18 33.7 134.9 -2.4 -25.2 161 379 08 40 31 08 43 30 J1308+0401 10 41 18 32.1 134.8 -2.5 -25.2 -19 379 No stop 08 45 30 =1305+042 10 43 18 32.3 135.4 -2.4 -24.9 101 386 08 43 31 08 45 30 SDSSJ1305+05 10 43 18 33.9 135.4 -2.4 -24.9 -19 386 No stop 08 48 30 --- 10 46 19 34.2 136.3 -2.3 -24.6 161 398 08 45 31 08 49 00 J1308+0401 10 46 49 32.7 136.3 -2.4 -24.5 11 398 08 49 00 08 51 00 =1305+042 10 48 49 32.9 136.9 -2.3 -24.2 120 406 08 49 01 08 51 00 SDSSJ1305+05 10 48 49 34.4 136.9 -2.3 -24.2 -19 406 No stop 08 54 00 --- 10 51 50 34.7 137.8 -2.2 -23.8 161 417 08 51 01 08 54 00 J1308+0401 10 51 50 33.2 137.7 -2.3 -23.8 -19 417 No stop 08 56 00 =1305+042 10 53 50 33.4 138.2 -2.3 -23.6 101 425 08 54 01 08 57 00 J1229+0203 10 54 50 35.0 150.4 -1.6 -17.2 1 425 08 57 00 09 02 00 =3C273B 10 59 51 35.4 151.9 -1.5 -16.4 300 444 08 57 01 09 03 00 J1308+0401 11 00 51 34.1 140.2 -2.1 -22.6 2 444 09 03 00 09 08 00 =1305+042 11 05 52 34.5 141.6 -2.1 -21.9 300 464 09 03 01 Schedule for JB2_MERL (Code Jm ) Page 5 Confirmation of close dual quasars at z=0.6-2.5 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 23 Oct 2022 Day 296 --- 09 08 00 SDSSJ1305+05 11 05 52 36.1 141.7 -2.0 -21.9 -19 464 No stop 09 11 00 --- 11 08 53 36.4 142.6 -2.0 -21.4 161 475 09 08 01 09 11 30 J1308+0401 11 09 23 34.9 142.6 -2.0 -21.4 11 475 09 11 30 09 13 30 =1305+042 11 11 23 35.0 143.1 -2.0 -21.1 120 483 09 11 31 09 13 30 SDSSJ1305+05 11 11 23 36.6 143.3 -1.9 -21.0 -19 483 No stop 09 16 30 --- 11 14 24 36.9 144.2 -1.9 -20.6 161 495 09 13 31 09 16 30 J1308+0401 11 14 24 35.3 144.0 -1.9 -20.7 -19 495 No stop 09 18 30 =1305+042 11 16 24 35.5 144.6 -1.9 -20.4 101 502 09 16 31 09 18 30 SDSSJ1305+05 11 16 24 37.0 144.8 -1.8 -20.3 -19 502 No stop 09 21 30 --- 11 19 24 37.3 145.7 -1.8 -19.8 161 514 09 18 31 09 22 00 J1308+0401 11 19 54 35.8 145.6 -1.8 -19.8 11 514 09 22 00 09 24 00 =1305+042 11 21 55 36.0 146.1 -1.8 -19.5 120 522 09 22 01 09 24 00 SDSSJ1305+05 11 21 55 37.5 146.4 -1.7 -19.4 -19 522 No stop 09 27 00 --- 11 24 55 37.8 147.3 -1.7 -19.0 161 533 09 24 01 09 27 00 J1308+0401 11 24 55 36.2 147.0 -1.7 -19.1 -19 533 No stop 09 29 00 =1305+042 11 26 56 36.4 147.6 -1.7 -18.7 101 541 09 27 01 09 29 00 SDSSJ1305+05 11 26 56 37.9 147.9 -1.7 -18.6 -19 541 No stop 09 32 00 --- 11 29 56 38.1 148.8 -1.6 -18.2 161 553 09 29 01 09 32 30 J1308+0401 11 30 26 36.6 148.6 -1.6 -18.2 11 553 09 32 30 09 34 30 =1305+042 11 32 26 36.8 149.2 -1.6 -17.9 120 560 09 32 31 09 34 30 SDSSJ1305+05 11 32 26 38.3 149.5 -1.6 -17.7 -19 560 No stop 09 37 30 --- 11 35 27 38.6 150.5 -1.5 -17.2 161 572 09 34 31 09 37 30 J1308+0401 11 35 27 37.0 150.1 -1.6 -17.4 -19 572 No stop 09 39 30 =1305+042 11 37 27 37.2 150.7 -1.5 -17.1 101 580 09 37 31 09 39 30 SDSSJ1305+05 11 37 27 38.7 151.1 -1.5 -16.9 -19 580 No stop 09 42 30 --- 11 40 28 38.9 152.0 -1.4 -16.4 161 591 09 39 31 09 43 00 J1308+0401 11 40 58 37.4 151.8 -1.5 -16.5 11 591 09 43 00 09 45 00 =1305+042 11 42 58 37.6 152.4 -1.4 -16.1 120 599 09 43 01 09 45 00 SDSSJ1305+05 11 42 58 39.1 152.8 -1.4 -16.0 -19 599 No stop 09 48 00 --- 11 45 59 39.3 153.7 -1.3 -15.5 161 611 09 45 01 Schedule for JB2_MERL (Code Jm ) Page 6 Confirmation of close dual quasars at z=0.6-2.5 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 23 Oct 2022 Day 296 --- 09 48 00 J1308+0401 11 45 59 37.8 153.3 -1.4 -15.6 -19 611 No stop 09 50 00 =1305+042 11 47 59 37.9 153.9 -1.4 -15.3 101 618 09 48 01 09 50 00 SDSSJ1305+05 11 47 59 39.4 154.3 -1.3 -15.1 -19 618 No stop 09 53 00 --- 11 51 00 39.6 155.2 -1.3 -14.6 161 630 09 50 01 09 53 30 J1308+0401 11 51 30 38.1 155.0 -1.3 -14.7 11 630 09 53 30 09 55 30 =1305+042 11 53 30 38.3 155.6 -1.3 -14.3 120 638 09 53 31 09 55 30 SDSSJ1305+05 11 53 30 39.8 156.0 -1.2 -14.1 -19 638 No stop 09 58 30 --- 11 56 30 40.0 157.0 -1.2 -13.6 161 649 09 55 31 09 58 30 J1308+0401 11 56 30 38.4 156.5 -1.2 -13.8 -19 649 No stop 10 00 30 =1305+042 11 58 31 38.6 157.2 -1.2 -13.5 101 657 09 58 31 10 00 30 SDSSJ1305+05 11 58 31 40.1 157.6 -1.1 -13.2 -19 657 No stop 10 03 30 --- 12 01 31 40.2 158.6 -1.1 -12.7 161 669 10 00 31 10 04 00 J1308+0401 12 02 01 38.8 158.2 -1.1 -12.8 11 669 10 04 00 10 06 00 =1305+042 12 04 02 38.9 158.9 -1.1 -12.5 120 676 10 04 01 10 06 00 SDSSJ1305+05 12 04 02 40.4 159.4 -1.0 -12.2 -19 676 No stop 10 09 00 --- 12 07 02 40.5 160.3 -1.0 -11.7 161 688 10 06 01 10 09 00 J1308+0401 12 07 02 39.0 159.8 -1.0 -11.9 -18 688 No stop 10 11 00 =1305+042 12 09 02 39.1 160.4 -1.0 -11.6 102 696 10 09 01 10 11 00 SDSSJ1305+05 12 09 02 40.6 161.0 -1.0 -11.3 -19 696 No stop 10 14 00 --- 12 12 03 40.8 161.9 -0.9 -10.7 161 707 10 11 01 10 14 30 J1308+0401 12 12 33 39.3 161.6 -0.9 -10.9 12 707 10 14 30 10 16 30 =1305+042 12 14 33 39.4 162.2 -0.9 -10.6 120 715 10 14 31 10 16 30 SDSSJ1305+05 12 14 33 40.9 162.8 -0.9 -10.3 -19 715 No stop 10 19 30 --- 12 17 34 41.0 163.7 -0.8 -9.7 161 727 10 16 31 10 19 30 J1308+0401 12 17 34 39.5 163.1 -0.9 -10.0 -18 727 No stop 10 21 30 =1305+042 12 19 34 39.6 163.8 -0.8 -9.6 102 734 10 19 31 10 21 30 SDSSJ1305+05 12 19 34 41.1 164.4 -0.8 -9.3 -19 734 No stop 10 24 30 --- 12 22 35 41.2 165.4 -0.7 -8.7 161 746 10 21 31 10 25 00 J1308+0401 12 23 05 39.8 164.9 -0.8 -9.0 12 746 10 25 00 10 27 00 =1305+042 12 25 05 39.8 165.5 -0.7 -8.6 120 754 10 25 01 Schedule for JB2_MERL (Code Jm ) Page 7 Confirmation of close dual quasars at z=0.6-2.5 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 23 Oct 2022 Day 296 --- 10 27 00 SDSSJ1305+05 12 25 05 41.3 166.2 -0.7 -8.2 -18 754 No stop 10 30 00 --- 12 28 06 41.4 167.2 -0.6 -7.7 162 765 10 27 01 10 30 00 J1308+0401 12 28 06 39.9 166.5 -0.7 -8.0 -18 765 No stop 10 32 00 =1305+042 12 30 06 40.0 167.2 -0.7 -7.7 102 773 10 30 01 10 32 00 SDSSJ1305+05 12 30 06 41.5 167.8 -0.6 -7.3 -18 773 No stop 10 35 00 --- 12 33 06 41.6 168.8 -0.6 -6.7 162 785 10 32 01 10 35 30 J1308+0401 12 33 37 40.1 168.3 -0.6 -7.0 12 785 10 35 30 10 37 30 =1305+042 12 35 37 40.2 168.9 -0.6 -6.6 120 792 10 35 31 10 37 30 SDSSJ1305+05 12 35 37 41.6 169.7 -0.5 -6.2 -18 792 No stop 10 40 30 --- 12 38 37 41.7 170.7 -0.5 -5.6 162 804 10 37 31 10 40 30 J1308+0401 12 38 37 40.3 169.9 -0.5 -6.0 -18 804 No stop 10 42 30 =1305+042 12 40 38 40.3 170.6 -0.5 -5.6 102 812 10 40 31 10 42 30 SDSSJ1305+05 12 40 38 41.8 171.3 -0.4 -5.2 -18 812 No stop 10 45 30 --- 12 43 38 41.8 172.3 -0.4 -4.6 162 823 10 42 31 10 46 00 J1308+0401 12 44 08 40.4 171.7 -0.4 -5.0 12 823 10 46 00 10 48 00 =1305+042 12 46 09 40.4 172.4 -0.4 -4.6 120 831 10 46 01 10 48 00 SDSSJ1305+05 12 46 09 41.9 173.2 -0.3 -4.1 -18 831 No stop 10 51 00 --- 12 49 09 41.9 174.2 -0.3 -3.5 162 842 10 48 01 10 51 00 J1308+0401 12 49 09 40.5 173.4 -0.3 -4.0 -18 842 No stop 10 53 00 =1305+042 12 51 09 40.5 174.0 -0.3 -3.6 102 850 10 51 01 10 54 00 J1229+0203 12 52 10 38.5 187.0 0.4 4.2 -2 850 10 54 00 10 59 00 =3C273B 12 57 10 38.4 188.6 0.4 5.1 298 870 10 54 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess322.C2048 --- 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: 10 Station: JB2_MERL Total bit rate: 512 Format: VDIF Bits per sample: 2 Sample rate:128.000 Number of channels: 2 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 5664.00 5664.00 Net SB= U U IF SB = L L Pol. = RCP LCP BBC = 1 9 BBC SB= L L IF = A1 B1 The following frequency sets based on these setups were used. Frequency Set: 2 Setup file default. Used with PCAL = off LO sum= 4926.49 4926.49 BBC fr= 737.51 737.51 Bandwd= 64.00 64.00 Matching frequency sets: 2 Track assignments are: track1= 1, 2 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * SDSSJ1305+05 13 02 55.046471 * 13 05 27.020000 13 06 34.347603 0.00 05 40 52.45613 * 05 24 49.43000 05 17 40.68715 0.00 From catalog imbedded in main SCHED input file. 3C273B 12 26 33.245835 * 12 29 06.699731 12 30 14.745512 1.03 * J1229+0203 02 19 43.30570 * 02 03 08.59820 01 55 46.34723 1.38 3C273 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc 1226+023 GSFC 2016a X/S astro solution, 32136 observations. J1229+02 1305+042 13 05 43.183402 * 13 08 15.553095 13 09 23.052779 0.21 * J1308+0401 04 17 08.92252 * 04 01 09.35114 03 54 02.29568 0.47 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 127 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 SDSSJ1305+0sess322.C2048 1 2 3 4 5 6 7 8 9 10 2.000 79.696 J1229+0203 sess322.C2048 1 2 3 4 5 6 7 8 9 10 0.250 11.191 J1308+0401 sess322.C2048 1 2 3 4 5 6 7 8 9 10 1.500 62.148 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) SDSSJ1305+05 20.1 J1229+0203 24.2 J1308+0401 18.6 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