COVER INFORMATION Station: HART (Code Hh ) Experiment: ET048B Exp. Code: ET048B Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Oleg Titov Address: Geoscience Australia Cnr Jerrabomberra Avenue and Hindmarsh Drive Symonston ACT 2609 GPO Box 378 Canberra ACT 2601 Australia Phone: +61 2 6249 9064 EMAIL: Oleg.Titov@ga.gov.au Fax: Phone during observation: +61 2 6249 9064 Observing mode: Notes: Imaging extragalactic radio sources with extremely large radio-optical offsets Devided on 3 epochs: ET048A, ET048B, ET048C 6cm, 1024 Mbps, RCP & LCP, 2 bit sampling Prepared by Alexey Melnikov, aem@iaaras.ru Schedule for HART (Code Hh ) Page 2 ET048B 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 10 Mar 2022 Day 69 --- Next scan frequencies: 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 09 30 00 J0205+3212 22 32 55 12.7 44.0 -3.6 0.0 0 0 09 30 00 09 38 00 =0202+319 22 40 56 14.0 42.9 -3.4 0.0 480 62 09 30 01 09 39 00 J0112+3208 22 41 57 21.5 34.0 -2.5 0.0 7 62 09 39 00 09 44 00 =0110+318 22 46 57 22.1 33.1 -2.5 0.0 300 100 09 39 01 09 44 00 J0112+3208 22 46 57 22.1 33.1 -2.5 0.0 -20 100 No stop 09 45 30 =0110+318 22 48 28 22.3 32.8 -2.4 0.0 70 112 09 44 01 09 45 30 0116+319 22 48 28 21.4 34.1 -2.5 0.0 -30 112 No stop 09 49 00 --- 22 51 58 21.9 33.4 -2.5 0.0 180 139 09 45 31 09 49 00 J0112+3208 22 51 58 22.7 32.2 -2.4 0.0 -30 139 No stop 09 50 30 =0110+318 22 53 28 22.9 31.9 -2.3 0.0 60 151 09 49 01 09 50 30 0116+319 22 53 28 22.1 33.1 -2.5 0.0 -30 151 No stop 09 54 00 --- 22 56 59 22.5 32.5 -2.4 0.0 180 178 09 50 31 09 54 40 J0112+3208 22 57 39 23.4 31.1 -2.3 0.0 10 178 09 54 40 09 56 10 =0110+318 22 59 09 23.6 30.8 -2.2 0.0 90 189 09 54 41 09 56 10 0116+319 22 59 09 22.7 32.1 -2.4 0.0 -30 189 No stop 09 59 40 --- 23 02 40 23.2 31.4 -2.3 0.0 180 216 09 56 11 09 59 40 J0112+3208 23 02 40 24.0 30.1 -2.2 0.0 -30 216 No stop 10 01 10 =0110+318 23 04 10 24.1 29.8 -2.2 0.0 60 228 09 59 41 10 01 10 0116+319 23 04 10 23.3 31.1 -2.3 0.0 -30 228 No stop 10 04 40 --- 23 07 41 23.7 30.4 -2.2 0.0 180 255 10 01 11 10 05 20 J0112+3208 23 08 21 24.6 29.0 -2.1 0.0 10 255 10 05 20 10 06 50 =0110+318 23 09 51 24.8 28.7 -2.1 0.0 90 267 10 05 21 10 06 50 0116+319 23 09 51 24.0 30.0 -2.2 0.0 -30 267 No stop 10 10 20 --- 23 13 22 24.4 29.3 -2.1 0.0 180 294 10 06 51 10 10 20 J0112+3208 23 13 22 25.1 28.0 -2.0 0.0 -30 294 No stop 10 11 50 =0110+318 23 14 52 25.3 27.7 -2.0 0.0 60 305 10 10 21 10 11 50 0116+319 23 14 52 24.5 29.0 -2.1 0.0 -30 305 No stop 10 15 20 --- 23 18 23 24.9 28.3 -2.0 0.0 180 332 10 11 51 Schedule for HART (Code Hh ) Page 3 ET048B 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 10 Mar 2022 Day 69 --- 10 16 00 J0112+3208 23 19 03 25.7 26.8 -1.9 0.0 10 332 10 16 00 10 17 30 =0110+318 23 20 33 25.9 26.5 -1.9 0.0 90 344 10 16 01 10 17 30 0116+319 23 20 33 25.1 27.9 -2.0 0.0 -30 344 No stop 10 21 00 --- 23 24 03 25.5 27.2 -1.9 0.0 180 371 10 17 31 10 21 00 J0112+3208 23 24 03 26.2 25.8 -1.8 0.0 -30 371 No stop 10 22 30 =0110+318 23 25 34 26.4 25.5 -1.8 0.0 60 383 10 21 01 10 22 30 0116+319 23 25 34 25.7 26.9 -1.9 0.0 -30 383 No stop 10 26 00 --- 23 29 04 26.0 26.1 -1.9 0.0 180 410 10 22 31 10 26 40 J0112+3208 23 29 44 26.8 24.6 -1.7 0.0 10 410 10 26 40 10 28 10 =0110+318 23 31 15 26.9 24.3 -1.7 0.0 90 421 10 26 41 10 28 10 0116+319 23 31 15 26.2 25.7 -1.8 0.0 -30 421 No stop 10 31 40 --- 23 34 45 26.6 24.9 -1.8 0.0 180 448 10 28 11 10 31 40 J0112+3208 23 34 45 27.2 23.5 -1.7 0.0 -30 448 No stop 10 33 10 =0110+318 23 36 15 27.4 23.2 -1.6 0.0 60 460 10 31 41 10 33 10 0116+319 23 36 15 26.7 24.6 -1.7 0.0 -30 460 No stop 10 36 40 --- 23 39 46 27.0 23.9 -1.7 0.0 180 487 10 33 11 10 37 20 J0112+3208 23 40 26 27.7 22.3 -1.6 0.0 10 487 10 37 20 10 38 50 =0110+318 23 41 56 27.9 22.0 -1.5 0.0 90 499 10 37 21 10 38 50 0116+319 23 41 56 27.2 23.4 -1.6 0.0 -30 499 No stop 10 42 20 --- 23 45 27 27.5 22.7 -1.6 0.0 180 526 10 38 51 10 42 20 J0112+3208 23 45 27 28.1 21.2 -1.5 0.0 -30 526 No stop 10 43 50 =0110+318 23 46 57 28.3 20.9 -1.5 0.0 60 537 10 42 21 10 43 50 0116+319 23 46 57 27.7 22.3 -1.6 0.0 -30 537 No stop 10 47 20 --- 23 50 28 28.0 21.6 -1.5 0.0 180 564 10 43 51 10 48 00 J0112+3208 23 51 08 28.6 19.9 -1.4 0.0 10 564 10 48 00 10 49 30 =0110+318 23 52 38 28.7 19.6 -1.4 0.0 90 576 10 48 01 10 49 30 0116+319 23 52 38 28.1 21.1 -1.5 0.0 -30 576 No stop 10 53 00 --- 23 56 09 28.4 20.3 -1.4 0.0 180 603 10 49 31 10 53 00 J0112+3208 23 56 09 29.0 18.8 -1.3 0.0 -30 603 No stop 10 54 30 =0110+318 23 57 39 29.1 18.5 -1.3 0.0 60 614 10 53 01 Schedule for HART (Code Hh ) Page 4 ET048B 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 10 Mar 2022 Day 69 --- 10 54 30 0116+319 23 57 39 28.5 20.0 -1.4 0.0 -30 614 No stop 10 58 00 --- 00 01 10 28.8 19.2 -1.3 0.0 180 642 10 54 31 10 58 40 J0112+3208 00 01 50 29.4 17.5 -1.2 0.0 10 642 10 58 40 11 00 10 =0110+318 00 03 20 29.5 17.2 -1.2 0.0 90 653 10 58 41 11 00 10 0116+319 00 03 20 29.0 18.7 -1.3 0.0 -30 653 No stop 11 03 40 --- 00 06 50 29.2 17.9 -1.2 0.0 180 680 11 00 11 11 03 40 J0112+3208 00 06 50 29.7 16.3 -1.1 0.0 -30 680 No stop 11 05 10 =0110+318 00 08 21 29.8 16.0 -1.1 0.0 60 692 11 03 41 11 05 10 0116+319 00 08 21 29.3 17.5 -1.2 0.0 -30 692 No stop 11 08 40 --- 00 11 51 29.5 16.7 -1.1 0.0 180 719 11 05 11 11 09 20 J0112+3208 00 12 31 30.0 15.0 -1.0 0.0 10 719 11 09 20 11 10 50 =0110+318 00 14 02 30.1 14.7 -1.0 0.0 90 730 11 09 21 11 10 50 J0112+3208 00 14 02 30.1 14.7 -1.0 0.0 -20 730 No stop 11 14 20 =0110+318 00 17 32 30.3 13.8 -0.9 0.0 190 757 11 10 51 11 16 20 J0344+1559 00 19 33 24.7 55.9 -3.4 0.0 18 757 11 16 20 11 21 20 =0341+158 00 24 33 25.6 55.0 -3.4 0.0 300 796 11 16 21 11 21 20 J0344+1559 00 24 33 25.6 55.0 -3.4 0.0 -20 796 No stop 11 22 50 =0341+158 00 26 04 25.9 54.8 -3.3 0.0 70 808 11 21 21 11 22 50 0350+177 00 26 04 23.1 54.6 -3.5 0.0 -31 808 No stop 11 26 20 --- 00 29 34 23.7 54.0 -3.4 0.0 179 835 11 22 51 11 26 20 J0344+1559 00 29 34 26.5 54.1 -3.3 0.0 -31 835 No stop 11 27 50 =0341+158 00 31 04 26.8 53.9 -3.2 0.0 59 846 11 26 21 11 27 50 0350+177 00 31 04 24.0 53.7 -3.4 0.0 -31 846 No stop 11 31 20 --- 00 34 35 24.6 53.1 -3.3 0.0 179 873 11 27 51 11 32 00 J0344+1559 00 35 15 27.5 53.1 -3.2 0.0 9 873 11 32 00 11 33 30 =0341+158 00 36 45 27.8 52.9 -3.1 0.0 90 885 11 32 01 11 33 30 0350+177 00 36 45 25.0 52.8 -3.3 0.0 -31 885 No stop 11 37 00 --- 00 40 16 25.6 52.2 -3.2 0.0 179 912 11 33 31 11 37 00 J0344+1559 00 40 16 28.4 52.2 -3.1 0.0 -31 912 No stop 11 38 30 =0341+158 00 41 46 28.7 52.0 -3.1 0.0 59 924 11 37 01 Schedule for HART (Code Hh ) Page 5 ET048B 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 10 Mar 2022 Day 69 --- 11 38 30 0350+177 00 41 46 25.9 51.9 -3.2 0.0 -31 924 No stop 11 42 00 --- 00 45 17 26.5 51.3 -3.1 0.0 179 951 11 38 31 11 42 40 J0344+1559 00 45 57 29.4 51.2 -3.0 0.0 9 951 11 42 40 11 44 10 =0341+158 00 47 27 29.7 50.9 -3.0 0.0 90 962 11 42 41 11 44 10 0350+177 00 47 27 26.9 50.9 -3.1 0.0 -31 962 No stop 11 47 40 --- 00 50 58 27.5 50.2 -3.1 0.0 179 989 11 44 11 11 47 40 J0344+1559 00 50 58 30.3 50.2 -2.9 0.0 -31 989 No stop 11 49 10 =0341+158 00 52 28 30.6 49.9 -2.9 0.0 59 1001 11 47 41 11 49 10 0350+177 00 52 28 27.8 50.0 -3.0 0.0 -31 1001 No stop 11 52 40 --- 00 55 59 28.4 49.3 -3.0 0.0 179 1028 11 49 11 11 53 20 J0344+1559 00 56 39 31.3 49.1 -2.8 0.0 9 1028 11 53 20 11 54 50 =0341+158 00 58 09 31.5 48.8 -2.8 0.0 90 1040 11 53 21 11 54 50 0350+177 00 58 09 28.7 48.9 -2.9 0.0 -31 1040 No stop 11 58 20 --- 01 01 39 29.3 48.2 -2.9 0.0 179 1067 11 54 51 11 58 20 J0344+1559 01 01 39 32.1 48.1 -2.7 0.0 -31 1067 No stop 11 59 50 =0341+158 01 03 10 32.4 47.8 -2.7 0.0 59 1078 11 58 21 11 59 50 0350+177 01 03 10 29.6 47.9 -2.8 0.0 -31 1078 No stop 12 03 20 --- 01 06 40 30.2 47.2 -2.8 0.0 179 1105 11 59 51 12 04 00 J0344+1559 01 07 20 33.1 46.9 -2.6 0.0 9 1105 12 04 00 12 05 30 =0341+158 01 08 51 33.3 46.6 -2.6 0.0 90 1117 12 04 01 12 05 30 0350+177 01 08 51 30.5 46.8 -2.8 0.0 -31 1117 No stop 12 09 00 --- 01 12 21 31.1 46.1 -2.7 0.0 179 1144 12 05 31 12 09 00 J0344+1559 01 12 21 33.9 45.9 -2.6 0.0 -31 1144 No stop 12 10 30 =0341+158 01 13 51 34.1 45.5 -2.5 0.0 59 1156 12 09 01 12 10 30 0350+177 01 13 51 31.3 45.8 -2.7 0.0 -31 1156 No stop 12 14 00 --- 01 17 22 31.9 45.1 -2.6 0.0 179 1183 12 10 31 12 14 40 J0344+1559 01 18 02 34.8 44.6 -2.5 0.0 9 1183 12 14 40 12 16 10 =0341+158 01 19 32 35.0 44.3 -2.4 0.0 90 1194 12 14 41 12 16 10 0350+177 01 19 32 32.2 44.6 -2.6 0.0 -31 1194 No stop 12 19 40 --- 01 23 03 32.8 43.9 -2.5 0.0 179 1221 12 16 11 Schedule for HART (Code Hh ) Page 6 ET048B 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 10 Mar 2022 Day 69 --- 12 19 40 J0344+1559 01 23 03 35.6 43.5 -2.4 0.0 -31 1221 No stop 12 21 10 =0341+158 01 24 33 35.8 43.2 -2.4 0.0 59 1233 12 19 41 12 21 10 0350+177 01 24 33 33.0 43.6 -2.5 0.0 -31 1233 No stop 12 24 40 --- 01 28 04 33.6 42.8 -2.4 0.0 179 1260 12 21 11 12 25 20 J0344+1559 01 28 44 36.4 42.2 -2.3 0.0 9 1260 12 25 20 12 26 50 =0341+158 01 30 14 36.7 41.9 -2.3 0.0 90 1271 12 25 21 12 26 50 0350+177 01 30 14 33.9 42.3 -2.4 0.0 -31 1271 No stop 12 30 20 --- 01 33 45 34.4 41.5 -2.3 0.0 179 1298 12 26 51 12 30 20 J0344+1559 01 33 45 37.2 41.0 -2.2 0.0 -31 1298 No stop 12 31 50 =0341+158 01 35 15 37.4 40.7 -2.2 0.0 59 1310 12 30 21 12 31 50 0350+177 01 35 15 34.7 41.2 -2.3 0.0 -31 1310 No stop 12 35 20 --- 01 38 46 35.2 40.4 -2.3 0.0 179 1337 12 31 51 12 36 00 J0344+1559 01 39 26 38.0 39.7 -2.1 0.0 9 1337 12 36 00 12 37 30 =0341+158 01 40 56 38.2 39.3 -2.1 0.0 90 1349 12 36 01 12 37 30 0350+177 01 40 56 35.5 39.9 -2.2 0.0 -31 1349 No stop 12 41 00 --- 01 44 26 36.0 39.1 -2.2 0.0 179 1376 12 37 31 12 41 00 J0344+1559 01 44 26 38.7 38.4 -2.0 0.0 -31 1376 No stop 12 42 30 =0341+158 01 45 57 38.9 38.0 -2.0 0.0 59 1387 12 41 01 12 42 30 0350+177 01 45 57 36.2 38.7 -2.1 0.0 -31 1387 No stop 12 46 00 --- 01 49 27 36.7 37.9 -2.1 0.0 179 1414 12 42 31 12 46 40 J0344+1559 01 50 07 39.5 37.0 -1.9 0.0 9 1414 12 46 40 12 48 10 =0341+158 01 51 38 39.7 36.6 -1.9 0.0 90 1426 12 46 41 12 48 10 0350+177 01 51 38 37.0 37.3 -2.0 0.0 -31 1426 No stop 12 51 40 --- 01 55 08 37.5 36.5 -2.0 0.0 179 1453 12 48 11 12 51 40 J0344+1559 01 55 08 40.2 35.7 -1.8 0.0 -31 1453 No stop 12 53 10 =0341+158 01 56 38 40.4 35.3 -1.8 0.0 59 1465 12 51 41 12 53 10 0350+177 01 56 38 37.7 36.1 -2.0 0.0 -31 1465 No stop 12 56 40 --- 02 00 09 38.1 35.2 -1.9 0.0 179 1492 12 53 11 12 57 20 J0344+1559 02 00 49 40.9 34.2 -1.7 0.0 9 1492 12 57 20 12 58 50 =0341+158 02 02 19 41.1 33.7 -1.7 0.0 90 1503 12 57 21 Schedule for HART (Code Hh ) Page 7 ET048B 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 10 Mar 2022 Day 69 --- 12 58 50 J0344+1559 02 02 19 41.1 33.7 -1.7 0.0 -20 1503 No stop 13 00 00 =0341+158 02 03 30 41.2 33.4 -1.7 0.0 50 1512 12 58 51 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess122.C1024 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: hh6cm Values confirmed by E-mail Jonathan Quick 20140219 (CR) ****** Only 128.00 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 8 Station: HART Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 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 Net SB= L L U U L L U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 11 Setup file default. Used with PCAL = off LO sum= 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 11 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) * 0116+319 01 16 47.245342 * 01 19 35.000876 01 20 47.235190 0.00 J0119+3210 31 55 05.83643 * 32 10 50.06197 32 17 43.24396 0.00 From catalog imbedded in main SCHED input file. Titov,ET048B * 0350+177 03 50 00.966044 * 03 52 52.916665 03 54 07.877792 0.00 J0352+1754 17 45 43.68362 * 17 54 36.73124 17 58 29.71015 0.00 From catalog imbedded in main SCHED input file. Titov,ET048B 0110+318 01 10 03.762623 * 01 12 50.333053 01 14 02.020049 0.09 * J0112+3208 31 52 23.76439 * 32 08 17.43262 32 15 14.44864 0.12 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 152 observations. 0202+319 02 02 09.652800 * 02 05 04.925362 02 06 20.670193 0.00 * J0205+3212 31 58 10.39522 * 32 12 30.09544 32 18 48.04475 0.00 J0205+32 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 49141 observations. 0341+158 03 41 33.676026 * 03 44 23.172163 03 45 37.016823 0.05 * J0344+1559 15 50 19.30713 * 15 59 43.36917 16 03 49.23475 0.09 J0344+15 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 503 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 0116+319 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.933 176.426 0350+177 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 1.050 192.736 J0112+3208 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.567 107.988 J0205+3212 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.133 28.000 J0344+1559 sess122.C1024 1 2 3 4 5 6 7 8 9 10 11 12 + 0.578 102.742 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) 0116+319 45.9 0350+177 70.4 J0112+3208 44.9 J0205+3212 53.1 J0344+1559 68.0 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