COVER INFORMATION Station: ATCA (Code At ) Experiment: RadioAstron AGN polarization imaging Exp. Code: gg081c Schedule Version: 1.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: Jose L. Gomez Address: Instituto de Astrofisica de Andalucia-CSIC Glorieta de la Astronomia E-18008 Granada, Spain Phone: +79165452842 EMAIL: jlgomez@iaa.es, alobanov@mpifr-bonn.mpg.de Fax: Phone during observation: +79165452842 Observing mode: K-band,Q-band, dual-pol Notes: K-band, Radioastron-compatible frequency setup P-CAL is ON Tsys is ON auto-level (AGC) is ON Schedule for ATCA (Code At ) Page 2 RadioAstron AGN polarization imaging 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2017 Day 66 --- ---------- K-band VLBI scans. Space segment 01: 0851+202 with EVN+KVN+LBA ---------- Next scan frequencies: 22236.00 22236.00 22236.00 22236.00 22268.00 22268.00 22268.00 22268.00 Next BBC frequencies: 3236.00 3236.00 3236.00 3236.00 3268.00 3268.00 3268.00 3268.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 13 00 00 0851+202 10 00 01 37.3 -19.1 1.1 162.5 0 0 12 59 49 13 01 00 --- 10 01 01 37.3 -19.4 1.1 162.3 60 5 12 59 50 13 01 10 0851+202 10 01 11 37.2 -19.4 1.1 162.2 7 5 No stop 13 10 00 --- 10 10 03 36.6 -21.9 1.2 160.0 530 39 13 01 01 13 10 30 0851+202 10 10 33 36.5 -22.0 1.2 159.9 27 39 13 10 19 13 11 30 --- 10 11 33 36.5 -22.3 1.3 159.6 60 44 13 10 20 13 11 40 0851+202 10 11 43 36.4 -22.3 1.3 159.6 7 44 No stop 13 20 00 --- 10 20 04 35.7 -24.6 1.4 157.5 500 76 13 11 31 13 20 30 0851+202 10 20 34 35.7 -24.7 1.4 157.4 27 76 13 20 19 13 21 30 --- 10 21 34 35.6 -25.0 1.4 157.2 60 81 13 20 20 13 21 40 0851+202 10 21 44 35.6 -25.0 1.4 157.1 7 81 No stop 13 30 00 --- 10 30 06 34.8 -27.2 1.6 155.1 500 113 13 21 31 13 30 30 0851+202 10 30 36 34.7 -27.3 1.6 155.0 27 113 13 30 19 13 31 30 --- 10 31 36 34.6 -27.6 1.6 154.8 60 118 13 30 20 13 31 40 0851+202 10 31 46 34.6 -27.7 1.6 154.8 7 118 No stop 13 40 00 --- 10 40 07 33.7 -29.8 1.7 152.8 500 151 13 31 31 ---------- K-band VLBI scans. Space segment 01: 0851+202 with EVN+KVN+LBA cont. ---------- 13 40 30 0851+202 10 40 38 33.7 -29.9 1.7 152.7 27 151 13 40 19 13 41 30 --- 10 41 38 33.6 -30.2 1.8 152.5 60 155 13 40 20 13 41 40 0851+202 10 41 48 33.6 -30.2 1.8 152.5 7 155 No stop 13 50 00 --- 10 50 09 32.6 -32.3 1.9 150.6 500 188 13 41 31 ---------- K-band VLBI scans. Space segment 01: 0851+202 with EVN+KVN+LBA cont. ---------- 13 50 30 0851+202 10 50 39 32.6 -32.4 1.9 150.5 27 188 13 50 19 13 51 30 --- 10 51 39 32.5 -32.6 1.9 150.3 60 192 13 50 20 13 51 40 0851+202 10 51 49 32.4 -32.7 1.9 150.3 7 192 No stop 14 00 00 --- 11 00 11 31.4 -34.7 2.1 148.5 500 225 13 51 31 Schedule for ATCA (Code At ) Page 3 RadioAstron AGN polarization imaging 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2017 Day 66 --- ---------- K-band VLBI scans. Ground segment 01: target source with LBA ---------- 14 00 30 0851+202 11 00 41 31.4 -34.8 2.1 148.4 27 225 14 00 19 14 01 30 --- 11 01 41 31.2 -35.0 2.1 148.2 60 230 14 00 20 14 01 40 0851+202 11 01 51 31.2 -35.0 2.1 148.2 7 230 No stop 14 10 30 --- 11 10 42 30.1 -37.1 2.2 146.4 530 264 14 01 31 ---------- K-band VLBI scans. Ground segment 01: target source with EVN+KVN+LBA ---------- 14 11 00 0851+202 11 11 13 30.0 -37.2 2.3 146.3 27 264 14 10 49 14 12 00 --- 11 12 13 29.9 -37.4 2.3 146.1 60 269 14 10 50 14 12 10 0851+202 11 12 23 29.9 -37.5 2.3 146.0 7 269 No stop 14 20 30 --- 11 20 44 28.8 -39.3 2.4 144.4 500 301 14 12 01 14 21 00 0851+202 11 21 14 28.7 -39.4 2.4 144.3 27 301 14 20 49 14 22 00 --- 11 22 14 28.6 -39.6 2.4 144.1 60 306 14 20 50 14 22 10 0851+202 11 22 24 28.5 -39.7 2.4 144.1 7 306 No stop 14 30 30 --- 11 30 46 27.4 -41.4 2.6 142.5 500 338 14 22 01 14 31 00 0851+202 11 31 16 27.3 -41.6 2.6 142.4 27 338 14 30 49 14 32 00 --- 11 32 16 27.1 -41.8 2.6 142.3 60 343 14 30 50 14 32 10 0851+202 11 32 26 27.1 -41.8 2.6 142.2 7 343 No stop 14 40 30 --- 11 40 47 25.9 -43.5 2.7 140.7 500 376 14 32 01 ---------- K-band VLBI scans. Ground segment 01: target source with EVN+KVN+LBA ---------- 14 41 00 0851+202 11 41 17 25.8 -43.6 2.8 140.7 27 376 14 40 49 14 42 00 --- 11 42 18 25.7 -43.8 2.8 140.5 60 380 14 40 50 14 42 10 0851+202 11 42 28 25.7 -43.9 2.8 140.5 7 380 No stop 14 50 30 --- 11 50 49 24.4 -45.5 2.9 139.0 500 413 14 42 01 14 51 00 0851+202 11 51 19 24.3 -45.6 2.9 139.0 27 413 14 50 49 14 52 00 --- 11 52 19 24.2 -45.8 2.9 138.8 60 417 14 50 50 14 52 10 0851+202 11 52 29 24.1 -45.8 2.9 138.8 7 417 No stop 14 58 30 --- 11 58 50 23.1 -47.0 3.1 137.7 380 442 14 52 01 Schedule for ATCA (Code At ) Page 4 RadioAstron AGN polarization imaging 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2017 Day 66 --- ---------- K-band VLBI scans. Ground segment 01: target source with LBA ---------- 15 00 30 0851+202 12 00 51 22.8 -47.4 3.1 137.4 117 442 15 00 19 15 01 30 --- 12 01 51 22.7 -47.6 3.1 137.3 60 447 15 00 20 15 01 40 0851+202 12 02 01 22.6 -47.6 3.1 137.2 7 447 No stop 15 10 00 --- 12 10 22 21.3 -49.2 3.2 135.9 500 480 15 01 31 ---------- K-band VLBI scans. Ground segment 01: target source with EVN+KVN+LBA ---------- 15 10 30 0851+202 12 10 52 21.2 -49.3 3.3 135.9 27 480 15 10 19 15 11 30 --- 12 11 52 21.0 -49.4 3.3 135.7 60 484 15 10 20 15 11 40 0851+202 12 12 03 21.0 -49.5 3.3 135.7 7 484 No stop 15 20 30 --- 12 20 54 19.5 -51.0 3.4 134.4 530 519 15 11 31 15 21 00 0851+202 12 21 24 19.5 -51.1 3.4 134.3 27 519 15 20 49 15 22 00 --- 12 22 24 19.3 -51.3 3.4 134.2 60 523 15 20 50 15 22 10 0851+202 12 22 34 19.3 -51.3 3.4 134.1 7 523 No stop 15 30 30 --- 12 30 56 17.8 -52.8 3.6 133.0 500 556 15 22 01 15 31 00 0851+202 12 31 26 17.7 -52.9 3.6 132.9 27 556 15 30 49 15 32 00 --- 12 32 26 17.6 -53.0 3.6 132.8 60 560 15 30 50 15 32 10 0851+202 12 32 36 17.5 -53.0 3.6 132.7 7 560 No stop 15 40 30 --- 12 40 57 16.1 -54.4 3.8 131.6 500 593 15 32 01 15 41 00 0851+202 12 41 27 16.0 -54.5 3.8 131.6 27 593 15 40 49 15 42 00 --- 12 42 27 15.8 -54.7 3.8 131.4 60 598 15 40 50 15 42 10 0851+202 12 42 38 15.8 -54.7 3.8 131.4 7 598 No stop 15 50 30 --- 12 50 59 14.3 -56.0 3.9 130.4 500 630 15 42 01 15 51 00 0851+202 12 51 29 14.2 -56.1 3.9 130.3 27 630 15 50 49 15 52 00 --- 12 52 29 14.0 -56.3 3.9 130.2 60 635 15 50 50 15 52 10 0851+202 12 52 39 14.0 -56.3 3.9 130.1 7 635 No stop 15 59 30 --- 13 00 00 12.7 -57.4 4.1 129.3 440 664 15 52 01 16 00 00 0851+202 13 00 30 12.6 -57.5 4.1 129.2 27 664 15 59 49 16 01 00 --- 13 01 31 12.4 -57.6 4.1 129.1 60 668 15 59 50 16 01 10 0851+202 13 01 41 12.4 -57.7 4.1 129.1 7 668 No stop 16 09 00 --- 13 09 32 10.9 -58.8 4.2 D 128.1 0 699 16 01 01 Schedule for ATCA (Code At ) Page 5 RadioAstron AGN polarization imaging 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2017 Day 66 --- ---------- K-band VLBI scans. Space segment 02: Target down, observing calibrator for LBA ---------- 16 15 00 1814-637 13 15 33 32.8 149.2 -5.1 -92.8 42 699 16 14 49 16 16 00 --- 13 16 33 33.0 149.2 -5.1 -92.6 60 703 16 14 50 16 16 10 1814-637 13 16 43 33.0 149.2 -5.1 -92.6 7 703 No stop 16 25 00 --- 13 25 35 34.0 149.2 -4.9 -90.6 530 738 16 16 01 16 25 30 1814-637 13 26 05 34.0 149.2 -4.9 -90.5 27 738 16 25 19 16 26 30 --- 13 27 05 34.1 149.2 -4.9 -90.3 60 742 16 25 20 16 26 40 1814-637 13 27 15 34.1 149.2 -4.9 -90.2 7 742 No stop 16 35 00 --- 13 35 36 35.1 149.2 -4.8 -88.3 500 775 16 26 31 16 35 30 1814-637 13 36 06 35.1 149.2 -4.8 -88.2 27 775 16 35 19 16 36 30 --- 13 37 06 35.2 149.2 -4.7 -88.0 60 780 16 35 20 16 36 40 1814-637 13 37 16 35.2 149.2 -4.7 -88.0 7 780 No stop 16 45 00 --- 13 45 38 36.2 149.3 -4.6 -86.1 500 812 16 36 31 16 45 30 1814-637 13 46 08 36.2 149.3 -4.6 -85.9 27 812 16 45 19 16 46 30 --- 13 47 08 36.3 149.3 -4.6 -85.7 60 817 16 45 20 16 46 40 1814-637 13 47 18 36.4 149.3 -4.6 -85.7 7 817 No stop 16 55 00 --- 13 55 39 37.3 149.4 -4.4 -83.7 500 849 16 46 31 16 55 30 1814-637 13 56 10 37.3 149.4 -4.4 -83.6 27 849 16 55 19 16 56 30 --- 13 57 10 37.4 149.4 -4.4 -83.4 60 854 16 55 20 16 56 40 1814-637 13 57 20 37.5 149.4 -4.4 -83.3 7 854 No stop 17 05 00 --- 14 05 41 38.4 149.6 -4.3 -81.4 500 887 16 56 31 17 05 30 1814-637 14 06 11 38.4 149.6 -4.3 -81.3 27 887 17 05 19 17 06 30 --- 14 07 11 38.5 149.6 -4.2 -81.0 60 891 17 05 20 17 06 40 1814-637 14 07 21 38.6 149.6 -4.2 -81.0 7 891 No stop 17 15 00 --- 14 15 43 39.5 149.8 -4.1 -79.0 500 924 17 06 31 17 15 30 1814-637 14 16 13 39.5 149.8 -4.1 -78.8 27 924 17 15 19 17 16 30 --- 14 17 13 39.6 149.9 -4.1 -78.6 60 928 17 15 20 17 16 40 1814-637 14 17 23 39.6 149.9 -4.1 -78.6 7 928 No stop 17 25 00 --- 14 25 44 40.5 150.1 -3.9 -76.5 500 961 17 16 31 Schedule for ATCA (Code At ) Page 6 RadioAstron AGN polarization imaging 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2017 Day 66 --- 17 25 30 1814-637 14 26 14 40.6 150.1 -3.9 -76.4 27 961 17 25 19 17 26 30 --- 14 27 15 40.7 150.2 -3.9 -76.2 60 966 17 25 20 17 26 40 1814-637 14 27 25 40.7 150.2 -3.9 -76.1 7 966 No stop 17 35 00 --- 14 35 46 41.6 150.5 -3.8 -74.0 500 998 17 26 31 ---------- K-band VLBI scans. Ground segment 02: Target down, so observing calibrator for LBA ---------- 17 35 30 1814-637 14 36 16 41.7 150.5 -3.7 -73.9 27 998 17 35 19 17 36 30 --- 14 37 16 41.8 150.6 -3.7 -73.7 60 1003 17 35 20 17 36 40 1814-637 14 37 26 41.8 150.6 -3.7 -73.6 7 1003 No stop 17 45 30 --- 14 46 18 42.7 151.0 -3.6 -71.4 530 1037 17 36 31 ---------- K-band VLBI scans. Ground segment 02: Target down, so observing calibrator for LBA ---------- 17 45 30 1814-637 14 46 18 42.7 151.0 -3.6 -71.4 -3 1037 No stop 17 46 30 --- 14 47 18 42.8 151.0 -3.6 -71.1 57 1041 17 45 31 17 46 40 1814-637 14 47 28 42.9 151.0 -3.6 -71.1 7 1041 No stop 17 55 30 --- 14 56 19 43.8 151.5 -3.4 -68.8 530 1076 17 46 31 ---------- K-band VLBI scans. Ground segment 02: Target down, so observing calibrator for LBA ---------- 17 55 30 1814-637 14 56 19 43.8 151.5 -3.4 -68.8 -3 1076 No stop 17 56 30 --- 14 57 20 43.9 151.5 -3.4 -68.5 57 1080 17 55 31 17 56 40 1814-637 14 57 30 43.9 151.5 -3.4 -68.4 7 1080 No stop 18 05 30 --- 15 06 21 44.8 152.1 -3.2 -66.1 530 1114 17 56 31 ---------- K-band VLBI scans. Ground segment 02: Target down, so observing calibrator for LBA ---------- 18 05 30 1814-637 15 06 21 44.8 152.1 -3.2 -66.1 -3 1114 No stop 18 06 30 --- 15 07 21 44.9 152.1 -3.2 -65.8 57 1118 18 05 31 18 06 40 1814-637 15 07 31 44.9 152.1 -3.2 -65.8 7 1118 No stop 18 15 30 --- 15 16 23 45.8 152.7 -3.1 -63.4 530 1153 18 06 31 ---------- K-band VLBI scans. Ground segment 02: Target down, so observing calibrator for LBA ---------- 18 15 30 1814-637 15 16 23 45.8 152.7 -3.1 -63.4 -3 1153 No stop 18 16 30 --- 15 17 23 45.9 152.8 -3.1 -63.1 57 1156 18 15 31 18 16 40 1814-637 15 17 33 45.9 152.8 -3.1 -63.0 7 1156 No stop 18 25 30 --- 15 26 24 46.8 153.5 -2.9 -60.6 530 1191 18 16 31 Schedule for ATCA (Code At ) Page 7 RadioAstron AGN polarization imaging 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2017 Day 66 --- ---------- K-band VLBI scans. Ground segment 02: Target down, so observing calibrator for LBA ---------- 18 25 30 1814-637 15 26 24 46.8 153.5 -2.9 -60.6 -3 1191 No stop 18 26 30 --- 15 27 25 46.9 153.6 -2.9 -60.3 57 1195 18 25 31 18 26 40 1814-637 15 27 35 46.9 153.6 -2.9 -60.2 7 1195 No stop 18 35 30 --- 15 36 26 47.7 154.3 -2.7 -57.7 530 1229 18 26 31 ---------- K-band VLBI scans. Ground segment 02: Target down, so observing calibrator for LBA ---------- 18 35 30 1814-637 15 36 26 47.7 154.3 -2.7 -57.7 -3 1229 No stop 18 36 30 --- 15 37 26 47.8 154.4 -2.7 -57.4 57 1233 18 35 31 18 36 40 1814-637 15 37 36 47.8 154.4 -2.7 -57.4 7 1233 No stop 18 45 30 --- 15 46 28 48.7 155.3 -2.6 -54.8 530 1268 18 36 31 18 45 30 1814-637 15 46 28 48.7 155.3 -2.6 -54.8 -3 1268 No stop 18 46 30 --- 15 47 28 48.7 155.4 -2.6 -54.5 57 1272 18 45 31 18 46 40 1814-637 15 47 38 48.8 155.4 -2.6 -54.4 7 1272 No stop 19 00 00 --- 16 01 00 49.9 156.8 -2.3 -50.4 800 1323 18 46 31 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 ./gg081c_freq.dat: at1cm Setup group: 15 Station: ATCA Total bit rate: 512 Format: LBA Bits per sample: 2 Sample rate: 32.000 Number of channels: 8 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 19000.00 19000.00 19000.00 19000.00 19000.00 19000.00 19000.00 19000.00 Net SB= L U L U L U L U IF SB = U U U U U U U U Pol. = RCP RCP LCP LCP RCP RCP LCP LCP BBC = 1 1 2 2 3 3 4 4 BBC SB= L U L U L U L U IF = 2N 2N 1N 1N 2N 2N 1N 1N The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = 1MHz LO sum= 22236.00 22236.00 22236.00 22236.00 22268.00 22268.00 22268.00 22268.00 BBC fr= 3236.00 3236.00 3236.00 3236.00 3268.00 3268.00 3268.00 3268.00 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 9 Track assignments are: track1= 0, 2, 4, 6, 8, 10, 12, 14 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 59.861040 0.00 85 16 41.77889 * 85 00 00.00000 84 54 12.96182 0.00 From catalog imbedded in main SCHED input file. fake circumpolar target for a TS to look at * 1814-637 18 14 45.949299 * 18 19 35.002600 18 21 12.288328 0.00 -63 47 03.20742 *-63 45 48.20500 -63 44 57.59250 0.00 From catalog imbedded in main SCHED input file. possble calibrator source for LBA?? 1328+307 13 28 49.657778 * 13 31 08.288070 13 31 56.345486 0.00 J1331+3030 30 45 58.64060 * 30 30 32.95924 30 25 08.66218 0.00 * 3C286 ./gg081c_sources.radioastron WSRT calibrator, not for 92cm, rfc_2013d Petrov, 2013, unpublished 542 observati * 0716+714 07 16 13.029739 * 07 21 53.448474 07 23 50.595719 0.00 J0721+7120 71 26 15.17406 * 71 20 36.36340 71 18 40.38874 0.00 ./gg081c_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 42370 observations, RA-AO3-04, RA-AO2-1 * 0851+202 08 51 57.250618 * 08 54 48.874930 08 55 48.283390 0.00 J0854+2006 20 17 58.41733 * 20 06 30.64078 20 02 24.49441 0.00 OJ287 ./gg081c_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 213710 observations, RA-AO3-04, RA-AO3- 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 21 5.750 0.000 1814-637 ra1cm2.set 9 10 11 12 13 2.639 20.990 3C286 ra1cm2.set 51 0.267 0.000 ra7mm2.set 52 0.367 0.000 0716+714 ra1cm2.set 1 2 5 6 14 15 16 17 18 19 2 + 12.436 152.486 ra2cm2.set 43 55 0.450 14.171 ra7mm2.set 23 36 59 60 4.575 33.390 0851+202 ra1cm2.set 1 2 5 6 9 10 11 12 13 14 15 + 17.411 1982.713 ra2cm2.set 43 55 0.864 39.108 ra7mm2.set 36 52 59 60 0.911 54.094 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 99.9 1814-637 78.3 3C286 138.8 0716+714 104.6 0851+202 143.1 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