COVER INFORMATION Station: TIANMA65 (Code T6 ) Experiment: Characterizing OCRs in dwarf galaxies Exp. Code: ev026a Schedule Version: 3.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Dany Vohl Address: Anton Pannekoek Institute for Astronomy, University of Amsterdam 1098 XH Amsterdam Amsterdam The Netherlands Phone: +31 6 1887 9982 EMAIL: d.vohl@uva.nl Fax: Phone during observation: +31 6 1887 9982 Observing mode: vlbi Notes: # Please, make sure PHASE CAL is OFF # COVER LETTER: This observation is to observe ILT J075257.15+401026.3 first identified in the LoTSS DR2 data as potential analogue to persistent radio sources associated to some fast radio bursts. With the observation, we wish to constrain its source size, and evalute if the radio emission is due to star formation processes or not. Schedule for TIANMA65 (Code T6 ) Page 2 Characterizing OCRs in dwarf galaxies 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 ---------------------------------------------------------------------------------------- --- Fri 1 Mar 2024 Day 61 --- ---------- test pulsar ---------- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 643.51 643.51 643.51 643.51 579.51 579.51 579.51 579.51 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 16 00 00 B0540+23_D 10 44 20 24.2 -76.2 5.0 65.0 0 0 16 00 00 16 03 00 --- 10 47 21 23.6 -75.8 5.0 64.9 180 23 16 00 01 ---------- Fringe-finder ---------- 16 04 40 J0555+3948 10 49 01 31.6 -59.5 4.9 73.9 65 23 16 04 40 16 08 40 =0552+398 10 53 02 30.8 -59.3 4.9 73.4 240 54 16 04 41 ---------- Going to ILTJ0752 region ---------- 16 10 40 J0743+3941 10 55 02 50.8 -63.9 3.2 87.4 38 54 16 10 40 16 12 10 =0739+398 10 56 32 50.5 -63.9 3.2 87.1 90 66 16 10 41 16 12 10 ILTJ0752 10 56 32 52.4 -63.3 3.0 89.2 -9 66 No stop 16 17 10 --- 11 01 33 51.4 -63.2 3.1 88.5 291 104 16 12 11 16 17 50 J0743+3941 11 02 13 49.4 -63.8 3.3 86.3 30 104 16 17 50 16 19 10 =0739+398 11 03 33 49.1 -63.8 3.3 86.1 80 115 16 17 51 16 19 10 ILTJ0752 11 03 33 51.0 -63.2 3.1 88.1 -10 115 No stop 16 24 10 --- 11 08 34 50.1 -63.1 3.2 87.4 290 153 16 19 11 16 24 50 J0743+3941 11 09 14 48.0 -63.7 3.4 85.3 30 153 16 24 50 16 26 10 =0739+398 11 10 35 47.8 -63.6 3.4 85.1 80 164 16 24 51 16 26 10 ILTJ0752 11 10 35 49.7 -63.1 3.3 87.1 -10 164 No stop 16 31 10 --- 11 15 35 48.7 -63.0 3.3 86.3 290 202 16 26 11 16 31 50 J0743+3941 11 16 16 46.7 -63.5 3.5 84.3 30 202 16 31 50 16 33 10 =0739+398 11 17 36 46.4 -63.5 3.5 84.1 80 213 16 31 51 16 33 10 J0754+3910 11 17 36 48.6 -64.5 3.4 85.2 -10 213 No stop 16 36 10 =0751+393 11 20 36 48.0 -64.4 3.4 84.7 170 236 16 33 11 16 36 50 J0743+3941 11 21 16 45.7 -63.3 3.6 83.6 29 236 16 36 50 16 38 10 =0739+398 11 22 37 45.5 -63.3 3.6 83.4 80 246 16 36 51 16 38 10 ILTJ0752 11 22 37 47.4 -62.9 3.5 85.3 -10 246 No stop 16 43 10 --- 11 27 37 46.4 -62.8 3.6 84.6 290 285 16 38 11 Schedule for TIANMA65 (Code T6 ) Page 3 Characterizing OCRs in dwarf galaxies 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 ---------------------------------------------------------------------------------------- --- Fri 1 Mar 2024 Day 61 --- 16 43 50 J0743+3941 11 28 18 44.4 -63.1 3.7 82.7 30 285 16 43 50 16 45 10 =0739+398 11 29 38 44.1 -63.1 3.7 82.5 80 295 16 43 51 16 45 10 ILTJ0752 11 29 38 46.0 -62.7 3.6 84.3 -10 295 No stop 16 50 10 --- 11 34 39 45.1 -62.6 3.7 83.6 290 334 16 45 11 16 50 50 J0743+3941 11 35 19 43.0 -62.9 3.8 81.7 30 334 16 50 50 16 52 10 =0739+398 11 36 39 42.8 -62.8 3.9 81.5 80 344 16 50 51 16 52 10 ILTJ0752 11 36 39 44.7 -62.5 3.7 83.3 -10 344 No stop 16 57 10 --- 11 41 40 43.8 -62.3 3.8 82.6 290 383 16 52 11 16 57 50 J0743+3941 11 42 20 41.7 -62.6 4.0 80.8 30 383 16 57 50 16 59 10 =0739+398 11 43 40 41.5 -62.5 4.0 80.6 80 393 16 57 51 16 59 10 ILTJ0752 11 43 40 43.4 -62.3 3.8 82.4 -10 393 No stop 17 04 10 --- 11 48 41 42.4 -62.1 3.9 81.7 290 432 16 59 11 17 04 50 J0743+3941 11 49 21 40.4 -62.3 4.1 79.9 30 432 17 04 50 17 06 10 =0739+398 11 50 41 40.1 -62.2 4.1 79.7 80 442 17 04 51 17 06 10 J0754+3910 11 50 41 42.2 -63.4 3.9 80.7 -10 442 No stop 17 09 10 =0751+393 11 53 42 41.6 -63.3 4.0 80.3 170 465 17 06 11 17 09 50 J0743+3941 11 54 22 39.4 -62.1 4.2 79.2 30 465 17 09 50 17 11 10 =0739+398 11 55 42 39.2 -62.0 4.2 79.0 80 475 17 09 51 17 11 10 ILTJ0752 11 55 42 41.1 -61.8 4.0 80.7 -10 475 No stop 17 16 10 --- 12 00 43 40.2 -61.6 4.1 80.1 290 514 17 11 11 17 16 50 J0743+3941 12 01 23 38.1 -61.7 4.3 78.3 30 514 17 16 50 17 18 10 =0739+398 12 02 43 37.9 -61.7 4.3 78.1 80 524 17 16 51 ---------- Fringe-finder ---------- 17 19 50 J0555+3948 12 04 23 18.1 -53.9 6.1 64.2 19 524 17 19 50 17 23 50 =0552+398 12 08 24 17.4 -53.5 6.2 63.7 240 555 17 19 51 ---------- Going to ILTJ0752 region ---------- 17 25 50 J0743+3941 12 10 24 36.4 -61.3 4.4 77.2 41 555 17 25 50 17 27 20 =0739+398 12 11 55 36.1 -61.2 4.5 77.0 90 567 17 25 51 17 27 20 ILTJ0752 12 11 55 38.1 -61.1 4.3 78.6 -10 567 No stop 17 32 20 --- 12 16 55 37.1 -60.8 4.4 77.9 290 605 17 27 21 Schedule for TIANMA65 (Code T6 ) Page 4 Characterizing OCRs in dwarf galaxies 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 ---------------------------------------------------------------------------------------- --- Fri 1 Mar 2024 Day 61 --- 17 33 00 J0743+3941 12 17 36 35.1 -60.9 4.5 76.2 30 605 17 33 00 17 34 20 =0739+398 12 18 56 34.8 -60.8 4.6 76.1 80 616 17 33 01 17 34 20 ILTJ0752 12 18 56 36.7 -60.7 4.4 77.7 -10 616 No stop 17 39 20 --- 12 23 57 35.8 -60.5 4.5 77.0 290 654 17 34 21 17 40 00 J0743+3941 12 24 37 33.7 -60.5 4.7 75.3 30 654 17 40 00 17 41 20 =0739+398 12 25 57 33.5 -60.4 4.7 75.2 80 665 17 40 01 17 41 20 ILTJ0752 12 25 57 35.4 -60.4 4.5 76.7 -10 665 No stop 17 46 20 --- 12 30 58 34.5 -60.1 4.6 76.1 290 703 17 41 21 17 47 00 J0743+3941 12 31 38 32.4 -60.0 4.8 74.5 30 703 17 47 00 17 48 20 =0739+398 12 32 58 32.2 -60.0 4.8 74.3 80 714 17 47 01 17 48 20 J0754+3910 12 32 58 34.2 -61.2 4.6 75.4 -10 714 No stop 17 51 20 =0751+393 12 35 59 33.6 -61.1 4.7 75.0 170 737 17 48 21 17 52 00 J0743+3941 12 36 39 31.5 -59.7 4.9 73.8 30 737 17 52 00 17 53 20 =0739+398 12 37 59 31.3 -59.6 4.9 73.6 80 747 17 52 01 17 53 20 ILTJ0752 12 37 59 33.2 -59.7 4.7 75.2 -10 747 No stop 17 58 20 --- 12 43 00 32.3 -59.4 4.8 74.5 290 786 17 53 21 17 59 00 J0743+3941 12 43 40 30.2 -59.3 5.0 72.9 30 786 17 59 00 18 00 20 =0739+398 12 45 00 30.0 -59.2 5.0 72.8 80 796 17 59 01 18 00 20 ILTJ0752 12 45 00 31.9 -59.3 4.8 74.3 -10 796 No stop 18 05 20 --- 12 50 01 31.0 -59.0 4.9 73.6 290 835 18 00 21 18 06 00 J0743+3941 12 50 41 28.9 -58.8 5.1 72.0 30 835 18 06 00 18 07 20 =0739+398 12 52 01 28.7 -58.7 5.1 71.9 80 845 18 06 01 18 07 20 ILTJ0752 12 52 01 30.6 -58.8 5.0 73.4 -10 845 No stop 18 12 20 --- 12 57 02 29.7 -58.5 5.0 72.7 290 884 18 07 21 18 13 00 J0743+3941 12 57 42 27.6 -58.3 5.2 71.2 30 884 18 13 00 18 14 20 =0739+398 12 59 02 27.4 -58.2 5.2 71.0 80 894 18 13 01 18 14 20 ILTJ0752 12 59 02 29.3 -58.4 5.1 72.5 -10 894 No stop 18 19 20 --- 13 04 03 28.4 -58.1 5.2 71.8 290 933 18 14 21 18 20 00 J0743+3941 13 04 43 26.4 -57.8 5.3 70.3 30 933 18 20 00 18 21 20 =0739+398 13 06 04 26.1 -57.7 5.4 70.1 80 943 18 20 01 Schedule for TIANMA65 (Code T6 ) Page 5 Characterizing OCRs in dwarf galaxies 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 ---------------------------------------------------------------------------------------- --- Fri 1 Mar 2024 Day 61 --- 18 21 20 J0754+3910 13 06 04 28.0 -59.1 5.2 71.3 -10 943 No stop 18 24 20 =0751+393 13 09 04 27.5 -58.9 5.2 70.9 170 966 18 21 21 18 25 00 J0743+3941 13 09 44 25.5 -57.5 5.4 69.6 30 966 18 25 00 18 26 20 =0739+398 13 11 04 25.2 -57.4 5.4 69.5 80 976 18 25 01 18 26 20 ILTJ0752 13 11 04 27.2 -57.6 5.3 70.9 -10 976 No stop 18 31 20 --- 13 16 05 26.3 -57.2 5.4 70.3 290 1015 18 26 21 18 32 00 J0743+3941 13 16 45 24.2 -56.9 5.5 68.7 30 1015 18 32 00 18 33 20 =0739+398 13 18 05 24.0 -56.8 5.6 68.6 80 1025 18 32 01 18 33 20 ILTJ0752 13 18 05 25.9 -57.1 5.4 70.0 -10 1025 No stop 18 38 20 --- 13 23 06 25.0 -56.7 5.5 69.4 290 1064 18 33 21 18 39 00 J0743+3941 13 23 46 22.9 -56.4 5.6 67.8 30 1064 18 39 00 18 40 20 =0739+398 13 25 07 22.7 -56.3 5.7 67.7 80 1074 18 39 01 18 40 20 ILTJ0752 13 25 07 24.6 -56.6 5.5 69.1 -10 1074 No stop 18 45 20 --- 13 30 07 23.7 -56.2 5.6 68.5 290 1113 18 40 21 18 46 00 J0743+3941 13 30 48 21.7 -55.8 5.8 66.9 30 1113 18 46 00 18 47 20 =0739+398 13 32 08 21.5 -55.7 5.8 66.7 80 1123 18 46 01 18 47 20 ILTJ0752 13 32 08 23.4 -56.0 5.6 68.2 -10 1123 No stop 18 52 20 --- 13 37 09 22.5 -55.6 5.7 67.5 290 1162 18 47 21 18 53 00 J0743+3941 13 37 49 20.5 -55.2 5.9 66.0 30 1162 18 53 00 18 54 20 =0739+398 13 39 09 20.2 -55.1 5.9 65.8 80 1172 18 53 01 18 54 20 J0754+3910 13 39 09 22.0 -56.6 5.7 67.1 -9 1172 No stop 18 57 20 =0751+393 13 42 09 21.5 -56.3 5.8 66.7 171 1195 18 54 21 18 58 00 J0743+3941 13 42 50 19.6 -54.8 6.0 65.4 31 1195 18 58 00 18 59 20 =0739+398 13 44 10 19.3 -54.7 6.0 65.2 80 1206 18 58 01 18 59 20 ILTJ0752 13 44 10 21.3 -55.1 5.8 66.6 -10 1206 No stop 19 04 20 --- 13 49 11 20.4 -54.6 5.9 66.0 290 1244 18 59 21 19 05 00 J0743+3941 13 49 51 18.4 -54.2 6.1 64.4 30 1244 19 05 00 19 06 20 =0739+398 13 51 11 18.1 -54.1 6.1 64.3 80 1255 19 05 01 19 06 20 ILTJ0752 13 51 11 20.0 -54.5 5.9 65.7 -10 1255 No stop 19 11 20 --- 13 56 12 19.2 -54.1 6.0 65.0 290 1293 19 06 21 Schedule for TIANMA65 (Code T6 ) Page 6 Characterizing OCRs in dwarf galaxies 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 ---------------------------------------------------------------------------------------- --- Fri 1 Mar 2024 Day 61 --- 19 12 00 J0743+3941 13 56 52 17.1 -53.6 6.2 63.5 30 1293 19 12 00 19 13 20 =0739+398 13 58 12 16.9 -53.5 6.2 63.3 80 1304 19 12 01 19 13 20 ILTJ0752 13 58 12 18.8 -53.9 6.1 64.8 -10 1304 No stop 19 18 20 --- 14 03 13 17.9 -53.4 6.1 64.1 290 1342 19 13 21 19 19 00 J0743+3941 14 03 53 15.9 -53.0 6.3 62.6 30 1342 19 19 00 19 20 20 =0739+398 14 05 13 15.7 -52.8 6.3 62.4 80 1353 19 19 01 19 20 20 ILTJ0752 14 05 13 17.6 -53.3 6.2 63.8 -9 1353 No stop 19 25 20 --- 14 10 14 16.7 -52.8 6.3 63.1 291 1391 19 20 21 19 26 00 J0743+3941 14 10 54 14.7 -52.3 6.4 61.6 30 1391 19 26 00 19 27 20 =0739+398 14 12 14 14.5 -52.2 6.5 61.4 80 1402 19 26 01 19 27 20 J0754+3910 14 12 14 16.2 -53.7 6.3 62.8 -9 1402 No stop 19 30 20 =0751+393 14 15 15 15.7 -53.4 6.3 62.4 171 1425 19 27 21 19 31 00 J0743+3941 14 15 55 13.9 -51.8 6.5 60.9 31 1425 19 31 00 19 32 20 =0739+398 14 17 15 13.7 -51.7 6.5 60.8 80 1435 19 31 01 19 32 20 ILTJ0752 14 17 15 15.6 -52.2 6.4 62.2 -9 1435 No stop 19 37 20 --- 14 22 16 14.7 -51.7 6.5 61.5 291 1474 19 32 21 19 38 00 J0743+3941 14 22 56 12.7 -51.1 6.6 60.0 30 1474 19 38 00 19 39 20 =0739+398 14 24 16 12.5 -51.0 6.7 59.8 80 1484 19 38 01 19 39 20 ILTJ0752 14 24 16 14.4 -51.5 6.5 61.2 -9 1484 No stop 19 44 20 --- 14 29 17 13.5 -51.0 6.6 60.5 291 1523 19 39 21 19 45 00 J0743+3941 14 29 57 11.6 -50.4 6.8 59.0 30 1523 19 45 00 19 46 20 =0739+398 14 31 17 11.3 -50.3 6.8 58.8 80 1533 19 45 01 19 46 20 ILTJ0752 14 31 17 13.2 -50.8 6.6 60.3 -9 1533 No stop 19 51 20 --- 14 36 18 12.4 -50.4 6.7 59.6 291 1572 19 46 21 19 52 00 J0743+3941 14 36 58 10.4 -49.7 6.9 58.0 30 1572 19 52 00 19 53 20 =0739+398 14 38 19 10.2 -49.6 6.9 57.8 80 1582 19 52 01 19 53 20 ILTJ0752 14 38 19 12.0 -50.2 6.7 59.3 -9 1582 No stop 19 58 20 --- 14 43 19 11.2 -49.7 6.8 58.6 291 1621 19 53 21 19 59 00 J0743+3941 14 44 00 9.3 -49.0 7.0 57.0 31 1621 19 59 00 20 00 20 =0739+398 14 45 20 9.1 -48.8 7.0 56.8 80 1631 19 59 01 Schedule for TIANMA65 (Code T6 ) Page 7 Characterizing OCRs in dwarf galaxies 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 ---------------------------------------------------------------------------------------- --- Fri 1 Mar 2024 Day 61 --- 20 00 20 J0754+3910 14 45 20 10.6 -50.5 6.8 58.4 -8 1631 No stop 20 03 20 =0751+393 14 48 20 10.1 -50.2 6.9 57.9 172 1654 20 00 21 20 05 20 ILTJ0752 14 50 21 10.1 -48.9 6.9 57.6 116 1654 20 05 20 20 10 20 --- 14 55 21 9.3 -48.4 7.0 56.9 300 1693 20 05 21 ---------- eMERLIN amplitude calibrator ---------- 20 56 00 3C286 15 41 09 62.4 277.0 2.1 80.2 2093 1693 20 56 00 21 00 00 --- 15 45 10 61.5 277.3 2.2 79.9 240 1724 20 56 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess124.L1024 --- 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: 11 Station: TIANMA65 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= 2270.00 2270.00 2270.00 2270.00 2270.00 2270.00 2270.00 2270.00 Net SB= L L U U L L U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 5 1 5 2 6 2 6 BBC SB= U U L L U U L L IF = A4 B3 A4 B3 A4 B3 A4 B3 The following frequency sets based on these setups were used. Frequency Set: 7 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 643.51 643.51 643.51 643.51 579.51 579.51 579.51 579.51 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 7 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) * ILTJ0752 07 49 33.412353 * 07 52 57.153200 07 54 36.548346 0.00 40 18 13.89419 * 40 10 26.38587 40 06 46.70064 0.00 From catalog imbedded in main SCHED input file. * B0540+23_D 05 40 06.938912 * 05 43 09.600000 05 44 37.961073 0.00 23 27 44.80457 * 23 29 05.00000 23 29 48.17973 0.00 From catalog imbedded in main SCHED input file. 0552+398 05 52 01.407168 * 05 55 30.805611 05 57 12.208822 0.00 * J0555+3948 39 48 21.94581 * 39 48 49.16496 39 49 11.53323 0.00 DA193 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0555+39 GSFC 2016a X/S astro solution, 415688 observations. 0739+398 07 39 45.940018 * 07 43 09.886529 07 44 49.321045 0.14 * J0743+3941 39 48 40.02304 * 39 41 30.78073 39 38 09.86367 0.16 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 151 observations. 0751+393 07 51 15.248476 * 07 54 37.069183 07 56 15.529668 1.86 * J0754+3910 39 18 41.79503 * 39 10 47.79774 39 07 04.69953 2.17 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 15 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 16.347471 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 22 51.59404 0.16 1328+307 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 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 ILTJ0752 sess124.L1024 1 2 3 4 5 6 7 8 9 10 11 12 2.733 285.041 B0540+23_D sess124.L1024 1 2 3 4 5 6 7 8 9 10 11 12 0.050 6.000 J0555+3948 sess124.L1024 1 2 3 4 5 6 7 8 9 10 11 12 0.133 15.800 J0743+3941 sess124.L1024 1 2 3 4 5 6 7 8 9 10 11 12 0.956 105.302 J0754+3910 sess124.L1024 2 3 4 5 6 7 8 9 10 11 12 0.400 33.754 3C286 sess124.L1024 1 2 3 4 5 6 7 8 9 11 12 0.067 6.496 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) ILTJ0752 128.5 B0540+23_D 104.8 J0555+3948 107.0 J0743+3941 127.0 J0754+3910 129.2 3C286 136.0 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