COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: Global 7mm VLBI observations of Cygnus A Exp. Code: gb075b Schedule Version: 1.00 Processed by SCHED version: 11.30 Version 11.3 update 1. April 14, 2014 PI: Biagina Boccardi Address: Max Planck Institute for Radioastronomy Auf dem Huegel 69 Bonn, 53121 Germany Phone: +49 (0)228 525 366 EMAIL: bboccardi@mpifr-bonn.mpg.de Fax: +49-2257-301-106 Phone during observation: +49-2257-301-155 Observing mode: 1024-32-2 Notes: COVER LETTER: Schedule for GBT_VLBA (Code Gb ) Page 2 Global 7mm VLBI observations of Cygnus A 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 19 Oct 2014 Day 292 --- ---------- GBT pointing scan. ---------- Next scan frequencies: 43114.25 43114.25 43146.25 43146.25 43178.25 43178.25 43210.25 43210.25 Next BBC frequencies: 714.25 714.25 746.25 746.25 778.25 778.25 810.25 810.25 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 19 30 00 2013+370 16 03 25 41.1 70.6 -4.2 -68.1 0 0 Stopped 19 36 30 --- 16 09 56 42.3 71.2 -4.1 -68.7 390 0 19 37 00 2013+370 16 10 26 42.4 71.3 -4.1 -68.7 9 0 19 37 00 19 40 00 --- 16 13 26 43.0 71.6 -4.0 -69.0 180 23 19 37 01 19 42 00 CYG-A 16 15 27 47.4 68.4 -3.7 -74.1 80 23 19 42 00 19 57 00 --- 16 30 29 50.2 69.5 -3.5 -75.7 900 139 19 42 01 19 59 00 2013+370 16 32 29 46.5 73.4 -3.7 -70.5 81 139 19 59 00 20 02 00 --- 16 35 30 47.1 73.7 -3.7 -70.8 180 162 19 59 01 ---------- GBT pointing scan. ---------- 20 04 00 BLLAC 16 37 30 30.3 57.8 -5.4 -63.8 37 162 Stopped 20 10 30 --- 16 44 01 31.4 58.4 -5.3 -64.6 390 162 20 11 00 BLLAC 16 44 31 31.5 58.5 -5.3 -64.7 9 162 20 11 00 20 14 00 --- 16 47 32 32.0 58.8 -5.3 -65.0 180 185 20 11 01 ---------- GBT pointing scan. ---------- 20 16 00 2013+370 16 49 32 49.8 75.0 -3.4 -71.9 35 185 Stopped 20 22 30 --- 16 56 03 51.0 75.7 -3.3 -72.4 390 185 20 23 00 2013+370 16 56 33 51.1 75.7 -3.3 -72.5 9 185 20 23 00 20 26 00 --- 16 59 34 51.7 76.0 -3.3 -72.7 180 209 20 23 01 20 27 00 CYG-A 17 00 34 55.7 71.6 -3.0 -78.9 21 209 20 27 00 20 42 00 --- 17 15 37 58.5 72.5 -2.7 -80.6 900 325 20 27 01 20 43 00 CYG-A 17 16 37 58.7 72.6 -2.7 -80.7 39 325 20 43 00 20 46 00 --- 17 19 37 59.3 72.7 -2.7 -81.1 180 348 20 43 01 20 47 00 2013+370 17 20 37 55.7 78.0 -2.9 -74.2 20 348 20 47 00 20 50 00 --- 17 23 38 56.3 78.3 -2.9 -74.5 180 371 20 47 01 20 51 00 CYG-A 17 24 38 60.2 73.0 -2.6 -81.6 19 371 20 51 00 21 06 00 --- 17 39 40 63.1 73.8 -2.3 -83.4 900 487 20 51 01 Schedule for GBT_VLBA (Code Gb ) Page 3 Global 7mm VLBI observations of Cygnus A 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 19 Oct 2014 Day 292 --- ---------- GBT pointing scan. ---------- 21 08 00 2013+370 17 41 41 59.7 80.0 -2.6 -75.7 78 487 Stopped 21 14 30 --- 17 48 12 61.0 80.7 -2.5 -76.1 390 487 21 15 00 2013+370 17 48 42 61.1 80.7 -2.5 -76.2 9 487 21 15 00 21 18 00 --- 17 51 42 61.7 81.0 -2.4 -76.4 180 510 21 15 01 21 19 00 CYG-A 17 52 43 65.5 74.4 -2.1 -85.0 17 510 21 19 00 21 34 00 --- 18 07 45 68.3 74.9 -1.9 -87.0 900 626 21 19 01 21 35 00 CYG-A 18 08 45 68.5 74.9 -1.9 -87.2 39 626 21 35 00 21 39 00 --- 18 12 46 69.3 75.0 -1.8 -87.7 240 657 21 35 01 ---------- GBT pointing scan. ---------- 21 40 00 2013+370 18 13 46 65.9 83.3 -2.0 -77.7 14 657 Stopped 21 46 30 --- 18 20 17 67.2 83.9 -1.9 -78.1 390 657 21 47 00 2013+370 18 20 47 67.3 84.0 -1.9 -78.1 9 657 21 47 00 21 50 00 --- 18 23 48 67.9 84.3 -1.9 -78.3 180 680 21 47 01 21 51 00 CYG-A 18 24 48 71.6 75.2 -1.6 -89.5 13 680 21 51 00 22 06 00 --- 18 39 50 74.4 75.0 -1.3 -92.1 900 796 21 51 01 22 07 00 CYG-A 18 40 50 74.6 75.0 -1.3 -92.3 39 796 22 07 00 22 12 00 --- 18 45 51 75.6 74.8 -1.2 -93.3 300 835 22 07 01 ---------- GBT pointing scan. ---------- 22 14 00 BLLAC 18 47 52 53.1 67.9 -3.3 -79.2 19 835 Stopped 22 20 30 --- 18 54 23 54.3 68.3 -3.1 -80.0 390 835 22 21 00 BLLAC 18 54 53 54.4 68.3 -3.1 -80.1 9 835 22 21 00 22 24 00 --- 18 57 53 54.9 68.5 -3.1 -80.5 180 858 22 21 01 ---------- GBT pointing scan. ---------- 22 26 00 2013+370 18 59 54 74.9 88.6 -1.3 -79.6 28 858 Stopped 22 32 30 --- 19 06 25 76.2 89.6 -1.2 -79.7 390 858 22 33 00 2013+370 19 06 55 76.3 89.6 -1.2 -79.7 9 858 22 33 00 22 36 00 --- 19 09 55 76.9 90.1 -1.1 -79.7 180 881 22 33 01 Schedule for GBT_VLBA (Code Gb ) Page 4 Global 7mm VLBI observations of Cygnus A 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 19 Oct 2014 Day 292 --- 22 37 30 CYG-A 19 11 25 80.4 72.1 -0.8 -100.2 28 881 22 37 30 22 52 30 --- 19 26 28 83.1 67.4 -0.6 -107.3 900 997 22 37 31 ---------- GBT pointing scan. ---------- 22 54 00 2013+370 19 27 58 80.4 93.5 -0.8 -79.1 15 997 Stopped 22 59 30 --- 19 33 29 81.5 94.8 -0.7 -78.6 330 997 23 00 00 2013+370 19 33 59 81.6 94.9 -0.7 -78.6 9 997 23 00 00 23 03 00 --- 19 37 00 82.2 95.8 -0.7 -78.2 180 1020 23 00 01 23 05 00 CYG-A 19 39 00 85.3 58.2 -0.3 -118.5 27 1020 23 05 00 23 20 00 --- 19 54 02 87.4 25.5 -0.1 -153.5 900 1136 23 05 01 23 21 00 CYG-A 19 55 03 87.5 21.7 -0.1 -157.5 31 1136 23 21 00 23 26 00 --- 20 00 03 87.7 -0.3 0.0 179.7 300 1175 23 21 01 23 31 00 CYG-A 20 05 04 87.5 -22.2 0.1 157.0 263 1175 23 31 00 23 46 00 --- 20 20 07 85.5 -57.2 0.3 119.6 900 1291 23 31 01 23 47 00 CYG-A 20 21 07 85.3 -58.3 0.4 118.3 36 1291 23 47 00 23 55 00 --- 20 29 08 83.9 -65.0 0.5 110.4 480 1353 23 47 01 --- Mon 20 Oct 2014 Day 293 --- ---------- GBT pointing scan. ---------- 00 00 00 BLLAC 20 34 09 72.6 69.9 -1.5 -95.6 43 1353 Stopped 00 06 30 --- 20 40 40 73.8 69.4 -1.4 -97.1 390 1353 00 07 00 BLLAC 20 41 10 73.9 69.4 -1.4 -97.2 9 1353 00 07 00 00 10 00 --- 20 44 11 74.5 69.1 -1.3 -98.0 180 1376 00 07 01 ---------- GBT pointing scan. ---------- 00 16 00 2013+370 20 50 12 83.2 262.6 0.6 77.3 6 1376 Stopped 00 22 30 --- 20 56 43 81.9 264.7 0.7 78.4 390 1376 00 23 00 2013+370 20 57 13 81.8 264.8 0.7 78.5 9 1376 00 23 00 00 26 00 --- 21 00 13 81.2 265.6 0.7 78.8 180 1399 00 23 01 00 28 00 CYG-A 21 02 14 77.8 286.0 1.0 96.0 54 1399 00 28 00 00 43 00 --- 21 17 16 75.0 285.1 1.3 92.7 900 1515 00 28 01 Schedule for GBT_VLBA (Code Gb ) Page 5 Global 7mm VLBI observations of Cygnus A 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 20 Oct 2014 Day 293 --- ---------- GBT pointing scan. ---------- 00 44 00 2013+370 21 18 16 77.7 269.3 1.0 79.7 2 1515 Stopped 00 50 30 --- 21 24 47 76.4 270.3 1.1 79.7 390 1515 00 51 00 2013+370 21 25 17 76.3 270.4 1.2 79.7 9 1515 00 51 00 00 54 00 --- 21 28 18 75.7 270.8 1.2 79.7 180 1538 00 51 01 00 55 00 CYG-A 21 29 18 72.7 284.9 1.5 90.5 5 1538 00 55 00 01 10 00 --- 21 44 21 69.8 285.0 1.7 88.1 900 1654 00 55 01 01 11 00 CYG-A 21 45 21 69.7 285.0 1.8 88.0 39 1654 01 11 00 01 16 00 --- 21 50 22 68.7 285.1 1.8 87.3 300 1693 01 11 01 01 18 00 2013+370 21 52 22 71.0 273.9 1.6 79.0 69 1693 01 18 00 01 21 00 --- 21 55 22 70.4 274.3 1.7 78.9 180 1716 01 18 01 01 23 00 CYG-A 21 57 23 67.4 285.3 2.0 86.3 70 1716 01 23 00 01 38 00 --- 22 12 25 64.5 285.8 2.2 84.4 900 1832 01 23 01 ---------- GBT pointing scan. ---------- 01 39 00 2013+370 22 13 25 66.9 276.2 2.0 78.0 12 1832 Stopped 01 45 30 --- 22 19 56 65.6 276.9 2.1 77.6 390 1832 01 46 00 2013+370 22 20 26 65.5 277.0 2.1 77.6 9 1832 01 46 00 01 49 00 --- 22 23 27 64.9 277.3 2.1 77.4 180 1855 01 46 01 01 51 00 CYG-A 22 25 27 62.1 286.5 2.4 82.8 73 1855 01 51 00 02 06 00 --- 22 40 30 59.3 287.3 2.7 81.1 900 1971 01 51 01 ---------- GBT pointing scan. ---------- 02 08 00 BLLAC 22 42 30 81.6 300.9 0.7 114.5 19 1971 Stopped 02 14 30 --- 22 49 01 80.5 297.9 0.8 110.5 390 1971 02 15 00 BLLAC 22 49 31 80.4 297.7 0.8 110.2 9 1971 02 15 00 02 18 00 --- 22 52 32 79.9 296.6 0.8 108.7 180 1994 02 15 01 ---------- GBT pointing scan. ---------- 02 20 00 2013+370 22 54 32 58.9 280.4 2.6 75.4 25 1994 Stopped 02 26 30 --- 23 01 03 57.7 281.0 2.8 75.0 390 1994 Schedule for GBT_VLBA (Code Gb ) Page 6 Global 7mm VLBI observations of Cygnus A 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 20 Oct 2014 Day 293 --- 02 27 00 2013+370 23 01 33 57.6 281.0 2.8 75.0 9 1994 02 27 00 02 30 00 --- 23 04 34 57.0 281.3 2.8 74.7 180 2017 02 27 01 02 31 00 CYG-A 23 05 34 54.6 288.8 3.1 78.3 16 2017 02 31 00 02 46 00 --- 23 20 36 51.8 289.9 3.3 76.6 900 2133 02 31 01 ---------- GBT pointing scan. ---------- 03 00 00 2013+370 23 34 39 51.3 284.2 3.3 72.5 796 2133 Stopped 03 06 30 --- 23 41 10 50.0 284.8 3.4 72.0 390 2133 03 07 00 2013+370 23 41 40 49.9 284.9 3.4 72.0 9 2133 03 07 00 03 10 00 --- 23 44 40 49.4 285.2 3.5 71.7 180 2156 03 07 01 03 11 00 CYG-A 23 45 40 47.2 291.7 3.8 74.0 17 2156 03 11 00 03 26 00 --- 00 00 43 44.5 292.9 4.0 72.4 900 2272 03 11 01 03 27 00 2013+370 00 01 43 46.1 286.8 3.8 70.4 18 2272 03 27 00 03 30 00 --- 00 04 44 45.6 287.1 3.8 70.1 180 2296 03 27 01 03 31 00 CYG-A 00 05 44 43.6 293.3 4.1 71.8 18 2296 03 31 00 03 46 00 --- 00 20 46 40.9 294.6 4.3 70.2 900 2411 03 31 01 ---------- GBT pointing scan. ---------- 03 47 00 2013+370 00 21 46 42.4 288.7 4.1 68.7 18 2411 Stopped 03 53 30 --- 00 28 17 41.2 289.4 4.2 68.1 390 2411 03 55 00 2013+370 00 29 48 40.9 289.5 4.2 68.0 69 2411 03 55 00 03 58 00 --- 00 32 48 40.4 289.8 4.3 67.7 180 2435 03 55 01 03 59 00 CYG-A 00 33 48 38.6 295.7 4.6 68.8 18 2435 03 59 00 04 14 00 --- 00 48 51 36.0 297.0 4.8 67.1 900 2551 03 59 01 04 15 00 CYG-A 00 49 51 35.8 297.1 4.8 67.0 39 2551 04 15 00 04 23 00 --- 00 57 52 34.4 297.9 5.0 66.1 480 2612 04 15 01 ---------- GBT pointing scan. ---------- 04 25 00 BLLAC 00 59 53 56.5 291.1 2.9 81.6 20 2612 Stopped 04 31 30 --- 01 06 24 55.4 291.4 3.1 80.8 390 2612 04 32 00 BLLAC 01 06 54 55.3 291.4 3.1 80.7 9 2612 04 32 00 04 35 00 --- 01 09 54 54.7 291.6 3.1 80.3 180 2636 04 32 01 Schedule for GBT_VLBA (Code Gb ) Page 7 Global 7mm VLBI observations of Cygnus A 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 20 Oct 2014 Day 293 --- ---------- GBT pointing scan. ---------- 04 37 00 2013+370 01 11 55 33.3 293.8 4.9 64.2 23 2636 Stopped 04 43 30 --- 01 18 26 32.1 294.5 5.0 63.6 390 2636 04 44 00 2013+370 01 18 56 32.0 294.5 5.0 63.5 9 2636 04 44 00 04 47 00 --- 01 21 56 31.5 294.8 5.1 63.2 180 2659 04 44 01 04 48 00 CYG-A 01 22 56 30.1 300.3 5.4 63.3 19 2659 04 48 00 05 03 00 --- 01 37 59 27.6 301.8 5.6 61.6 900 2775 04 48 01 05 04 00 2013+370 01 38 59 28.5 296.6 5.4 61.6 20 2775 05 04 00 05 07 00 --- 01 41 59 27.9 297.0 5.4 61.3 180 2798 05 04 01 05 08 00 CYG-A 01 43 00 26.7 302.3 5.7 61.0 20 2798 05 08 00 05 23 00 --- 01 58 02 24.3 303.8 6.0 59.2 900 2914 05 08 01 05 24 00 CYG-A 01 59 02 24.1 303.9 6.0 59.1 39 2914 05 24 00 05 28 00 --- 02 03 03 23.5 304.4 6.1 58.6 240 2945 05 24 01 ---------- GBT pointing scan. ---------- 05 29 00 2013+370 02 04 03 24.1 299.4 5.8 59.0 20 2945 Stopped 05 35 30 --- 02 10 34 23.0 300.1 5.9 58.3 390 2945 05 36 00 2013+370 02 11 04 22.9 300.2 5.9 58.3 9 2945 05 36 00 05 39 00 --- 02 14 05 22.4 300.5 6.0 57.9 180 2968 05 36 01 05 40 00 CYG-A 02 15 05 21.5 305.7 6.3 57.2 20 2968 05 40 00 05 55 00 --- 02 30 07 19.2 307.4 6.5 55.3 900 3084 05 40 01 05 56 00 CYG-A 02 31 08 19.0 307.5 6.5 55.2 39 3084 05 56 00 06 00 00 --- 02 35 08 18.4 307.9 6.6 54.7 240 3115 05 56 01 ---------- GBT pointing scan. ---------- 06 02 00 BLLAC 02 37 08 39.2 297.6 4.6 70.0 24 3115 Stopped 06 08 30 --- 02 43 40 38.0 298.1 4.7 69.2 390 3115 06 09 00 BLLAC 02 44 10 37.9 298.2 4.7 69.2 9 3115 06 09 00 06 12 00 --- 02 47 10 37.4 298.4 4.7 68.8 180 3138 06 09 01 Schedule for GBT_VLBA (Code Gb ) Page 8 Global 7mm VLBI observations of Cygnus A 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 20 Oct 2014 Day 293 --- ---------- GBT pointing scan. ---------- 06 14 00 2013+370 02 49 10 16.6 304.7 6.6 54.0 25 3138 Stopped 06 20 30 --- 02 55 42 15.6 305.5 6.7 53.2 390 3138 06 21 00 2013+370 02 56 12 15.5 305.6 6.7 53.2 9 3138 06 21 00 06 24 00 --- 02 59 12 15.0 305.9 6.7 52.8 180 3161 06 21 01 06 25 00 CYG-A 03 00 12 14.6 310.9 7.0 51.4 20 3161 06 25 00 06 40 00 --- 03 15 15 12.4 312.8 7.3 49.4 900 3277 06 25 01 06 41 00 2013+370 03 16 15 12.4 308.1 7.0 50.8 20 3277 06 41 00 06 44 00 --- 03 19 15 11.9 308.5 7.1 50.4 180 3300 06 41 01 06 45 00 CYG-A 03 20 16 11.7 313.4 7.3 48.7 20 3300 06 45 00 07 00 00 --- 03 35 18 9.6 315.4 7.6 46.6 900 3416 06 45 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: /home/bboccardi/SCHED/setups/sess314QG.setini Matching groups in /home/bboccardi/SCHED/catalogs/freq_RDBE.dat: gbt7mm_c8 LO1=37.168, LO2=15.732, LO3=10.5 Setup group: 10 Station: GBT_VLBA 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= 42400.00 42400.00 42400.00 42400.00 42400.00 42400.00 42400.00 42400.00 Net SB= U U U U U U U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = A C A C A C A C The following frequency sets based on these setups were used. Frequency Set: 18 Setup file default. Used with PCAL = 1MHz LO sum= 43114.25 43114.25 43146.25 43146.25 43178.25 43178.25 43210.25 43210.25 BBC fr= 714.25 714.25 746.25 746.25 778.25 778.25 810.25 810.25 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= 754.25 754.25 786.25 786.25 CRD bw= 16.00 16.00 16.00 16.00 Matching frequency sets: 18 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) J1959+4044 19 57 44.453094 * 19 59 28.368821 19 59 59.565661 167.68 * CYG-A 40 35 46.31273 * 40 44 02.04732 40 46 56.28727 120.15 CYGNUS-A /home/bboccardi/SCHED/catalogs/sources.vlba J1959+40 rfc_2012b Petrov, 2012, unpublished 3 observations 1957+405 1957+404 J2015+3710 20 13 37.014489 * 20 15 28.729775 20 16 02.361112 0.16 * 2013+370 37 01 44.45943 * 37 10 59.51531 37 14 10.46269 0.16 /home/bboccardi/SCHED/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 282 observations J2202+4216 22 00 39.362504 * 22 02 43.291371 22 03 21.587829 0.14 * BLLAC 42 02 08.59073 * 42 16 39.97987 42 21 20.82381 0.10 2200+420 /home/bboccardi/SCHED/catalogs/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 CYG-A tups/sess314QG.setini 1 2 3 4 5 6 9 18 14.458 883.767 2013+370 tups/sess314QG.setini 1 2 3 4 5 6 9 18 2.300 140.650 BLLAC tups/sess314QG.setini 1 2 3 4 5 6 9 18 0.500 32.550 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) CYG-A 100.7 2013+370 103.6 BLLAC 123.4 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