COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: Probing the innermost regions of AGN jets and their magnetic fields Exp. Code: ga030b Schedule Version: 1.00 Processed by SCHED version: 11.10 Version 11.1 Beta of about April 26, 201 PI: James M Anderson Address: MPIfR Bonn Auf dem Huegel 69 53121 Bonn, Germany Phone: +49 (228) 525 356 EMAIL: anderson@mpifr-bonn.mpg.de Fax: +49 228 525 229 Phone during observation: +7 903 661 48 65 Observing mode: K-band, dual-pol Notes: K-band, Radioastron-compatible frequency setup P-CAL is ON Tsys is ON, auto-level (AGC) is ON Please, send Mk5 disk packs to MPIfR-Bonn Schedule for GBT_VLBA (Code Gb ) Page 2 Probing the innermost regions of AGN jets and their magnetic fields 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 10 Nov 2013 Day 314 --- ---------- GBT pointing scan #1. ---------- Next scan frequencies: 22236.00 22236.00 22236.00 22236.00 Next BBC frequencies: 800.00 800.00 800.00 800.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 20 50 00 2200+420 18 51 19 53.7 68.1 -3.2 -79.7 0 0 Stopped 20 59 30 --- 19 00 51 55.5 68.7 -3.0 -80.8 570 0 21 00 00 2200+420 19 01 21 55.5 68.7 -3.0 -80.9 9 0 21 00 00 21 05 00 --- 19 06 22 56.5 68.9 -2.9 -81.5 300 10 21 00 01 21 06 10 2155+312 19 07 32 54.7 88.0 -2.8 -66.7 6 10 21 06 10 21 10 00 --- 19 11 23 55.5 88.6 -2.8 -66.7 230 17 21 06 11 21 11 10 2200+420 19 12 33 57.6 69.2 -2.8 -82.3 6 17 21 11 10 21 15 00 --- 19 16 23 58.3 69.4 -2.8 -82.8 230 24 21 11 11 21 16 10 2155+312 19 17 34 56.7 89.5 -2.7 -66.8 5 24 21 16 10 21 20 00 --- 19 21 24 57.4 90.1 -2.6 -66.8 230 32 21 16 11 21 21 10 2200+420 19 22 34 59.4 69.7 -2.7 -83.7 4 32 21 21 10 21 25 00 --- 19 26 25 60.1 69.8 -2.6 -84.2 230 39 21 21 11 21 26 10 2155+312 19 27 35 58.6 91.1 -2.5 -66.7 3 39 21 26 10 21 30 00 --- 19 31 26 59.4 91.7 -2.4 -66.7 230 46 21 26 11 21 31 10 2200+420 19 32 36 61.3 70.0 -2.5 -85.0 2 46 21 31 10 21 35 00 --- 19 36 27 62.0 70.2 -2.4 -85.6 230 54 21 31 11 21 36 10 2155+312 19 37 37 60.6 92.8 -2.3 -66.6 0 54 21 36 10 21 40 00 --- 19 41 28 61.3 93.5 -2.3 -66.5 230 61 21 36 11 21 41 15 2200+420 19 42 43 63.1 70.3 -2.3 -86.5 4 61 21 41 15 21 45 00 --- 19 46 28 63.8 70.4 -2.3 -87.0 225 68 21 41 16 21 46 15 2155+312 19 47 44 62.6 94.6 -2.2 -66.3 3 68 21 46 15 21 48 45 --- 19 50 14 63.1 95.1 -2.1 -66.3 150 73 21 46 16 ---------- GBT pointing scan #2. ---------- 21 50 00 2200+420 19 51 29 64.8 70.5 -2.2 -87.8 2 73 Stopped 21 59 30 --- 20 01 01 66.5 70.6 -2.0 -89.3 570 73 Schedule for GBT_VLBA (Code Gb ) Page 3 Probing the innermost regions of AGN jets and their magnetic fields 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 10 Nov 2013 Day 314 --- ---------- BLOCK 02: K-band VLBI scans, Space telescope segment 1 ---------- 22 00 00 2200+420 20 01 31 66.6 70.6 -2.0 -89.4 9 73 22 00 00 22 09 30 --- 20 11 02 68.4 70.6 -1.9 -91.0 570 92 22 00 01 22 10 00 2200+420 20 11 32 68.5 70.6 -1.9 -91.1 9 92 22 10 00 22 19 30 --- 20 21 04 70.2 70.4 -1.7 -92.8 570 110 22 10 01 22 20 00 2200+420 20 21 34 70.3 70.4 -1.7 -92.9 9 110 22 20 00 22 29 30 --- 20 31 06 72.1 70.1 -1.5 -94.9 570 128 22 20 01 22 30 00 2200+420 20 31 36 72.2 70.0 -1.5 -95.0 9 128 22 30 00 22 39 30 --- 20 41 07 73.9 69.4 -1.4 -97.2 570 146 22 30 01 22 40 00 2200+420 20 41 37 74.0 69.3 -1.4 -97.3 9 146 22 40 00 22 49 30 --- 20 51 09 75.7 68.3 -1.2 -99.9 570 165 22 40 01 22 50 00 2200+420 20 51 39 75.8 68.3 -1.2 -100.1 9 165 22 50 00 22 59 30 --- 21 01 11 77.6 66.7 -1.0 -103.2 570 183 22 50 01 23 00 00 2200+420 21 01 41 77.6 66.6 -1.0 -103.3 9 183 23 00 00 23 09 30 --- 21 11 12 79.3 64.3 -0.9 -107.2 570 201 23 00 01 23 10 00 2200+420 21 11 42 79.4 64.2 -0.9 -107.5 9 201 23 10 00 23 19 30 --- 21 21 14 81.1 60.6 -0.7 -112.6 570 219 23 10 01 23 20 00 2200+420 21 21 44 81.2 60.4 -0.7 -112.9 8 219 23 20 00 23 29 30 --- 21 31 16 82.8 54.7 -0.5 -120.1 570 238 23 20 01 23 30 00 2200+420 21 31 46 82.8 54.4 -0.5 -120.5 8 238 23 30 00 23 39 30 --- 21 41 17 84.3 45.2 -0.4 -131.2 570 256 23 30 01 23 40 00 2200+420 21 41 47 84.3 44.6 -0.4 -131.9 7 256 23 40 00 23 49 30 --- 21 51 19 85.5 29.3 -0.2 -148.8 570 274 23 40 01 23 50 00 2200+420 21 51 49 85.5 28.3 -0.2 -149.9 5 274 23 50 00 23 59 30 --- 22 01 20 86.1 5.3 -0.0 -174.4 570 292 23 50 01 --- Mon 11 Nov 2013 Day 315 --- 00 00 00 2200+420 22 01 51 86.1 4.0 -0.0 -175.8 4 292 00 00 00 00 09 30 --- 22 11 22 85.8 -20.7 0.1 158.0 570 311 00 00 01 00 10 00 2200+420 22 11 52 85.8 -21.9 0.1 156.7 5 311 00 10 00 00 19 30 --- 22 21 24 84.8 -39.9 0.3 137.2 570 329 00 10 01 Schedule for GBT_VLBA (Code Gb ) Page 4 Probing the innermost regions of AGN jets and their magnetic fields 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 11 Nov 2013 Day 315 --- 00 20 00 2200+420 22 21 54 84.7 -40.6 0.3 136.4 6 329 00 20 00 00 29 30 --- 22 31 25 83.4 -51.5 0.5 123.9 570 347 00 20 01 00 30 00 2200+420 22 31 55 83.3 -52.0 0.5 123.4 7 347 00 30 00 00 39 30 --- 22 41 27 81.8 -58.6 0.6 115.2 570 366 00 30 01 00 40 00 2200+420 22 41 57 81.7 -58.9 0.6 114.8 8 366 00 40 00 00 49 30 --- 22 51 29 80.0 -63.0 0.8 109.1 570 384 00 40 01 00 50 00 2200+420 22 51 59 80.0 -63.2 0.8 108.9 9 384 00 50 00 00 59 30 --- 23 01 30 78.3 -65.9 1.0 104.6 570 402 00 50 01 01 00 00 2200+420 23 02 00 78.2 -66.0 1.0 104.4 9 402 01 00 00 01 09 30 --- 23 11 32 76.5 -67.8 1.1 101.1 570 420 01 00 01 01 10 00 2200+420 23 12 02 76.4 -67.9 1.1 101.0 9 420 01 10 00 01 19 30 --- 23 21 34 74.6 -69.0 1.3 98.2 570 439 01 10 01 01 20 00 2200+420 23 22 04 74.5 -69.1 1.3 98.1 9 439 01 20 00 01 29 30 --- 23 31 35 72.8 -69.8 1.5 95.8 570 457 01 20 01 01 30 00 2200+420 23 32 05 72.7 -69.9 1.5 95.6 9 457 01 30 00 01 40 00 --- 23 42 07 70.9 -70.3 1.6 93.5 600 476 01 30 01 01 41 40 2021+614 23 43 47 51.7 -36.1 3.4 103.5 10 476 01 41 40 01 47 00 --- 23 49 08 51.0 -36.3 3.4 102.2 320 486 01 41 41 01 48 20 1823+568 23 50 28 35.7 -41.7 5.4 72.6 3 486 01 48 20 01 53 00 --- 23 55 09 35.1 -41.5 5.5 71.7 280 495 01 48 21 01 54 20 2021+614 23 56 29 50.2 -36.6 3.6 100.3 4 495 01 54 20 01 59 00 --- 00 01 10 49.6 -36.7 3.6 99.2 280 504 01 54 21 02 00 20 1823+568 00 02 30 34.1 -41.1 5.6 70.4 3 504 02 00 20 02 05 00 --- 00 07 11 33.5 -40.8 5.7 69.6 280 513 02 00 21 02 06 20 2021+614 00 08 31 48.8 -36.9 3.8 97.4 3 513 02 06 20 02 11 00 --- 00 13 12 48.2 -37.0 3.8 96.3 280 522 02 06 21 02 12 20 1823+568 00 14 32 32.6 -40.4 5.8 68.3 2 522 02 12 20 02 17 00 --- 00 19 13 32.0 -40.1 5.9 67.5 280 531 02 12 21 02 19 25 2200+420 00 21 38 63.6 -70.4 2.3 86.8 13 531 02 19 25 02 27 00 --- 00 29 15 62.2 -70.2 2.4 85.7 455 546 02 19 26 Schedule for GBT_VLBA (Code Gb ) Page 5 Probing the innermost regions of AGN jets and their magnetic fields 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 11 Nov 2013 Day 315 --- 02 28 50 2021+614 00 31 05 46.1 -37.3 4.1 92.2 23 546 02 28 50 02 33 00 --- 00 35 16 45.6 -37.3 4.2 91.3 250 554 02 28 51 02 34 20 1823+568 00 36 36 29.8 -39.0 6.2 64.4 2 554 02 34 20 02 39 30 --- 00 41 47 29.2 -38.6 6.3 63.5 310 564 02 34 21 02 40 50 2021+614 00 43 07 44.7 -37.3 4.3 89.5 2 564 02 40 50 02 46 00 --- 00 48 18 44.1 -37.3 4.4 88.4 310 574 02 40 51 02 47 20 1823+568 00 49 38 28.3 -38.1 6.4 62.1 1 574 02 47 20 02 52 30 --- 00 54 49 27.6 -37.7 6.5 61.2 310 584 02 47 21 02 53 50 2021+614 00 56 09 43.1 -37.2 4.6 86.7 2 584 02 53 50 02 59 00 --- 01 01 20 42.5 -37.2 4.6 85.6 310 594 02 53 51 03 00 40 2200+420 01 03 00 56.0 -68.8 3.0 81.2 15 594 03 00 40 03 08 00 --- 01 10 21 54.6 -68.4 3.1 80.3 440 608 03 00 41 ---------- GBT pointing scan #2. ---------- 03 10 00 2200+420 01 12 22 54.3 -68.3 3.2 80.0 99 608 Stopped 03 19 30 --- 01 21 53 52.5 -67.8 3.3 78.8 570 608 ---------- BLOCK 04: K-band VLBI scans, Space telescope segment 2 ---------- 03 20 00 2200+420 01 22 23 52.4 -67.7 3.3 78.8 9 608 03 20 00 03 29 30 --- 01 31 55 50.7 -67.2 3.5 77.6 570 626 03 20 01 03 30 00 2200+420 01 32 25 50.6 -67.1 3.5 77.6 9 626 03 30 00 03 39 30 --- 01 41 57 48.9 -66.5 3.6 76.4 570 644 03 30 01 03 40 00 2200+420 01 42 27 48.8 -66.5 3.7 76.4 9 644 03 40 00 03 49 30 --- 01 51 58 47.1 -65.8 3.8 75.3 570 662 03 40 01 03 50 00 2200+420 01 52 28 47.0 -65.8 3.8 75.2 9 662 03 50 00 03 59 30 --- 02 02 00 45.3 -65.1 4.0 74.1 570 681 03 50 01 04 00 00 2200+420 02 02 30 45.2 -65.1 4.0 74.0 9 681 04 00 00 04 09 30 --- 02 12 02 43.5 -64.4 4.1 72.9 570 699 04 00 01 04 10 00 2200+420 02 12 32 43.5 -64.4 4.2 72.8 9 699 04 10 00 04 19 30 --- 02 22 03 41.8 -63.6 4.3 71.7 570 717 04 10 01 04 20 00 2200+420 02 22 33 41.7 -63.6 4.3 71.7 9 717 04 20 00 04 29 30 --- 02 32 05 40.0 -62.8 4.5 70.6 570 736 04 20 01 Schedule for GBT_VLBA (Code Gb ) Page 6 Probing the innermost regions of AGN jets and their magnetic fields 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 11 Nov 2013 Day 315 --- 04 30 00 2200+420 02 32 35 39.9 -62.8 4.5 70.5 9 736 04 30 00 04 39 30 --- 02 42 06 38.3 -62.0 4.6 69.4 570 754 04 30 01 04 40 00 2200+420 02 42 37 38.2 -62.0 4.7 69.3 9 754 04 40 00 04 49 30 --- 02 52 08 36.6 -61.2 4.8 68.2 570 772 04 40 01 04 50 00 2200+420 02 52 38 36.5 -61.1 4.8 68.2 9 772 04 50 00 04 59 30 --- 03 02 10 34.8 -60.3 5.0 67.0 570 790 04 50 01 05 00 00 2200+420 03 02 40 34.8 -60.3 5.0 67.0 9 790 05 00 00 05 09 30 --- 03 12 11 33.1 -59.4 5.1 65.8 570 809 05 00 01 05 10 00 2200+420 03 12 41 33.1 -59.4 5.2 65.8 9 809 05 10 00 05 19 30 --- 03 22 13 31.5 -58.5 5.3 64.6 570 827 05 10 01 05 20 00 2200+420 03 22 43 31.4 -58.4 5.3 64.6 9 827 05 20 00 05 29 30 --- 03 32 15 29.8 -57.5 5.5 63.4 570 845 05 20 01 05 30 00 2200+420 03 32 45 29.7 -57.5 5.5 63.4 9 845 05 30 00 05 39 30 --- 03 42 16 28.2 -56.6 5.6 62.2 570 863 05 30 01 05 40 00 2200+420 03 42 46 28.1 -56.5 5.7 62.2 9 863 05 40 00 05 49 30 --- 03 52 18 26.5 -55.6 5.8 61.0 570 882 05 40 01 05 50 00 2200+420 03 52 48 26.4 -55.5 5.8 60.9 9 882 05 50 00 06 00 00 --- 04 02 50 24.8 -54.5 6.0 59.7 600 901 05 50 01 06 00 30 2200+420 04 03 20 24.8 -54.5 6.0 59.6 9 901 06 00 30 06 10 00 --- 04 12 51 23.2 -53.5 6.2 58.4 570 919 06 00 31 ---------- BLOCK 03: Q,U(K)-band VLBI scans, Ground telescope segment 3 ---------- Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 06 11 10 2200+420 04 14 02 23.1 -53.4 6.2 58.3 49 919 06 11 10 06 15 00 --- 04 17 52 22.5 -52.9 6.2 57.8 230 927 06 11 11 06 25 30 2155+312 04 28 24 13.7 -60.4 6.5 53.1 581 927 06 25 30 06 30 00 --- 04 32 55 12.9 -59.8 6.6 52.6 270 935 06 25 31 06 31 10 2200+420 04 34 05 20.0 -51.2 6.5 55.7 20 935 06 31 10 06 35 00 --- 04 37 55 19.4 -50.8 6.6 55.2 230 943 06 31 11 06 45 30 2155+312 04 48 27 10.3 -57.7 6.8 51.0 579 943 06 45 30 06 50 00 --- 04 52 58 9.6 -57.1 6.9 50.5 270 951 06 45 31 Schedule for GBT_VLBA (Code Gb ) Page 7 Probing the innermost regions of AGN jets and their magnetic fields 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 11 Nov 2013 Day 315 --- 06 51 10 2200+420 04 54 08 16.9 -48.9 6.8 53.0 19 951 06 51 10 06 55 00 --- 04 57 59 16.4 -48.5 6.9 52.5 230 959 06 51 11 07 05 30 2155+312 05 08 30 7.1 -55.0 7.2 48.8 578 959 07 05 30 07 10 00 --- 05 13 01 6.4 -54.3 7.2 48.3 270 967 07 05 31 07 11 10 2200+420 05 14 11 14.0 -46.5 7.2 50.3 18 967 07 11 10 07 15 00 --- 05 18 02 13.5 -46.1 7.2 49.7 230 975 07 11 11 ---------- GBT pointing scan #2. ---------- Next scan frequencies: 22236.00 22236.00 22236.00 22236.00 Next BBC frequencies: 800.00 800.00 800.00 800.00 07 20 00 2200+420 05 23 03 12.8 -45.4 7.3 49.0 279 975 Stopped 07 29 30 --- 05 32 34 11.5 -44.2 7.5 47.7 570 975 ---------- BLOCK 06: K-band VLBI scans, Space telescope segment 3a ---------- 07 30 00 2200+420 05 33 04 11.4 -44.2 7.5 47.6 9 975 07 30 00 07 39 30 --- 05 42 36 10.1 -42.9 7.7 46.2 570 993 07 30 01 07 40 00 2200+420 05 43 06 10.1 -42.9 7.7 46.2 9 993 07 40 00 07 49 30 --- 05 52 38 8.8 -41.6 7.8 44.8 570 1011 07 40 01 07 50 00 2200+420 05 53 08 8.7 -41.6 7.8 44.7 9 1011 07 50 00 07 59 30 --- 06 02 39 7.5 -40.3 8.0 43.3 570 1029 07 50 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: ra1cm2.set Matching groups in ./ga030b_freq.sess313rdbe.dat: gbt1cm_a4 LO1=28.868, LO2=16.532, LO3=10.5 Setup group: 1 Station: GBT_VLBA Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 23036.00 23036.00 23036.00 23036.00 Net SB= L L U U IF SB = L L L L Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U L L IF = B D B D The following frequency sets based on these setups were used. Frequency Set: 1 Setup file default. LO sum= 22236.00 22236.00 22236.00 22236.00 BBC fr= 800.00 800.00 800.00 800.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 1 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off ======== Setup file: ra7mm2.set Matching groups in ./ga030b_freq.sess313rdbe.dat: gbt7mm_c8 LO1=37.168, LO2=15.732, LO3=10.5 Setup group: 40 Station: GBT_VLBA Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 42400.00 42400.00 42400.00 42400.00 Net SB= U U U U IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C The following frequency sets based on these setups were used. Frequency Set: 49 Setup file default. LO sum= 43120.00 43120.00 43136.00 43136.00 BBC fr= 720.00 720.00 736.00 736.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 49 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * FAKERA 11 57 21.769299 * 12 00 00.000000 12 00 27.957242 0.00 85 16 41.77889 * 85 00 00.00000 84 55 03.41674 0.00 From catalog imbedded in main SCHED input file. fake circumpolar target for the TS to look at J1824+5651 18 23 14.951494 * 18 24 07.068372 18 24 20.015093 0.18 * 1823+568 56 49 18.07194 * 56 51 01.49075 56 51 53.19288 0.10 J1824+56 ./ga030b_sources.vlba rfc_2012b Petrov, 2012, unpublished 7564 observations J2022+6136 20 21 13.300235 * 20 22 06.681753 20 22 21.338384 0.21 * 2021+614 61 27 18.15575 * 61 36 58.80476 61 40 07.95199 0.10 J2022+61 ./ga030b_sources.vlba rfc_2012b Petrov, 2012, unpublished 3249 observations J2157+3127 21 55 15.930441 * 21 57 28.823886 21 58 06.638756 0.12 * 2155+312 31 12 41.62468 * 31 27 01.35172 31 31 22.41868 0.11 ./ga030b_sources.vlba rfc_2012b Petrov, 2012, unpublished 793 observations J2202+4216 22 00 39.362504 * 22 02 43.291371 22 03 18.807062 0.14 BLLAC 42 02 08.59073 * 42 16 39.97987 42 21 06.43227 0.10 * 2200+420 ./ga030b_sources.vlba J2202+42 rfc_2012b Petrov, 2012, unpublished 59418 observations VR422201 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 FAKERA ra1cm2.set 42 10.167 0.000 1823+568 ra1cm2.set 1 22 23 24 25 26 27 28 30 3 + 3.436 154.958 2021+614 ra1cm2.set 1 22 23 24 25 26 27 28 30 3 + 3.892 241.438 2155+312 ra1cm2.set 1 22 23 24 25 26 27 28 30 0.361 15.675 ra2cm2.set 12 13 0.765 25.474 ra7mm2.set 2 3 49 0.882 32.121 2200+420 ra1cm2.set 1 22 23 24 25 26 27 28 30 3 + 10.943 1873.507 ra2cm2.set 12 13 0.882 34.263 ra7mm2.set 2 3 49 0.799 33.262 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) FAKERA 103.9 1823+568 85.0 2021+614 100.3 2155+312 109.9 2200+420 112.1 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