COVER INFORMATION Station: SVETLOE (Code Sv ) Experiment: J1715+2145 imaging @ C-band Exp. Code: EG103B Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Leonid Gurvits Address: JIVE Oude Hoogeveensedijk 4 7991 PD Dwingeloo The Netherlands Phone: +31-521-596514 EMAIL: lgurvits@jive.eu Fax: Phone during observation: +31-521-596500 Observing mode: Notes: Based on the example eg103a.key file provided by Z. Paragi COVER LETTER: This is the schedule for the 6 cm run EG103B on 06 June 2019 (DOY 157 ~ 100*pi/2) 15 antennas + 4_Nt, MERLIN: Jb2, Wb, Ef, Mc, Nt, O8, T6, Ur, Tr, Ys, Hh, Sv, Zc, Bd, Ir, MER A standard C-band setup with 1 Gbps. Thanks! Leonid Gurvits Schedule for SVETLOE (Code Sv ) Page 2 J1715+2145 imaging @ C-band 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 6 Jun 2019 Day 157 --- Next scan frequencies: 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 Next BBC frequencies: 442.49 442.49 442.49 442.49 474.49 474.49 474.49 474.49 506.49 506.49 506.49 506.49 538.49 538.49 538.49 538.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16 30 00 1156+295 11 28 19 58.1 526.6 -0.5 -7.5 0 0 16 30 00 16 40 00 --- 11 38 21 58.4 530.7 -0.4 -5.2 600 77 16 30 01 16 41 30 3C286 11 39 51 54.6 495.6 -1.9 -23.5 30 77 16 41 30 16 51 30 --- 11 49 53 55.4 499.1 -1.7 -22.0 600 154 16 41 31 17 01 30 J1716+2152 11 59 55 24.1 447.9 -5.3 -32.0 520 154 17 01 30 17 02 30 =1714+219 12 00 55 24.3 448.2 -5.3 -32.0 60 162 17 01 31 17 03 00 1713+21M 12 01 25 24.3 448.5 -5.2 -32.0 20 162 17 03 00 17 13 00 --- 12 11 27 25.6 450.7 -5.1 -32.0 600 238 17 03 01 17 13 30 1713+21M 12 11 57 25.6 450.8 -5.1 -32.0 24 238 17 13 30 17 23 30 --- 12 21 58 26.9 453.0 -4.9 -31.9 600 315 17 13 31 17 24 00 1713+21M 12 22 28 26.9 453.1 -4.9 -31.9 24 315 17 24 00 17 34 00 --- 12 32 30 28.2 455.3 -4.7 -31.8 600 392 17 24 01 17 34 30 J1716+2152 12 33 00 28.2 455.2 -4.7 -31.9 21 392 17 34 30 17 35 30 =1714+219 12 34 00 28.3 455.4 -4.7 -31.8 60 400 17 34 31 17 36 00 1713+21M 12 34 30 28.4 455.8 -4.7 -31.8 20 400 17 36 00 17 46 00 --- 12 44 32 29.6 458.1 -4.5 -31.6 600 477 17 36 01 17 46 30 1713+21M 12 45 02 29.7 458.2 -4.5 -31.6 24 477 17 46 30 17 56 30 --- 12 55 04 30.9 460.5 -4.4 -31.4 600 554 17 46 31 17 57 00 1713+21M 12 55 34 31.0 460.6 -4.3 -31.4 24 554 17 57 00 18 07 00 --- 13 05 35 32.2 462.9 -4.2 -31.1 600 631 17 57 01 ---------- Calibrator ---------- 18 10 00 1739+522 13 08 36 53.1 431.6 -4.5 -49.6 123 631 18 10 00 18 11 00 --- 13 09 36 53.3 431.7 -4.5 -49.6 60 638 18 10 01 18 14 00 J1716+2152 13 12 37 33.0 464.3 -4.1 -30.9 123 638 18 14 00 18 15 00 =1714+219 13 13 37 33.1 464.6 -4.1 -30.9 60 646 18 14 01 Schedule for SVETLOE (Code Sv ) Page 3 J1715+2145 imaging @ C-band 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 6 Jun 2019 Day 157 --- 18 15 30 1713+21M 13 14 07 33.2 464.9 -4.0 -30.8 20 646 18 15 30 18 25 30 --- 13 24 08 34.4 467.4 -3.9 -30.4 600 723 18 15 31 18 26 00 1713+21M 13 24 39 34.4 467.5 -3.9 -30.3 24 723 18 26 00 18 36 00 --- 13 34 40 35.6 469.9 -3.7 -29.9 600 800 18 26 01 18 36 30 1713+21M 13 35 10 35.7 470.1 -3.7 -29.8 24 800 18 36 30 18 46 30 --- 13 45 12 36.8 472.6 -3.5 -29.3 600 877 18 36 31 18 47 00 J1716+2152 13 45 42 36.9 472.4 -3.5 -29.3 20 877 18 47 00 18 48 00 =1714+219 13 46 42 37.0 472.7 -3.5 -29.3 60 885 18 47 01 18 48 30 1713+21M 13 47 12 37.0 473.1 -3.5 -29.2 20 885 18 48 30 18 58 30 --- 13 57 14 38.2 475.7 -3.3 -28.5 600 962 18 48 31 18 59 00 1713+21M 13 57 44 38.2 475.8 -3.3 -28.5 24 962 18 59 00 19 09 00 --- 14 07 46 39.3 478.4 -3.1 -27.8 600 1038 18 59 01 19 09 30 1713+21M 14 08 16 39.4 478.6 -3.1 -27.7 24 1038 19 09 30 19 19 30 --- 14 18 17 40.4 481.2 -3.0 -26.9 600 1115 19 09 31 19 20 00 J1716+2152 14 18 47 40.5 481.1 -3.0 -27.0 20 1115 19 20 00 19 21 00 =1714+219 14 19 48 40.6 481.4 -3.0 -26.9 60 1123 19 20 01 19 21 30 1713+21M 14 20 18 40.6 481.8 -2.9 -26.8 20 1123 19 21 30 19 31 30 --- 14 30 19 41.7 484.6 -2.8 -25.9 600 1200 19 21 31 19 32 00 1713+21M 14 30 49 41.7 484.7 -2.8 -25.8 24 1200 19 32 00 19 42 00 --- 14 40 51 42.7 487.6 -2.6 -24.8 600 1277 19 32 01 19 42 30 1713+21M 14 41 21 42.8 487.7 -2.6 -24.8 24 1277 19 42 30 19 52 30 --- 14 51 23 43.7 490.6 -2.4 -23.7 600 1354 19 42 31 19 53 00 J1716+2152 14 51 53 43.8 490.4 -2.4 -23.8 20 1354 19 53 00 19 54 00 =1714+219 14 52 53 43.9 490.7 -2.4 -23.7 60 1362 19 53 01 19 54 30 1713+21M 14 53 23 43.9 491.2 -2.4 -23.5 20 1362 19 54 30 20 04 30 --- 15 03 25 44.8 494.2 -2.2 -22.3 600 1438 19 54 31 20 05 00 1713+21M 15 03 55 44.9 494.4 -2.2 -22.3 24 1438 20 05 00 20 15 00 --- 15 13 56 45.7 497.4 -2.0 -21.0 600 1515 20 05 01 20 15 30 1713+21M 15 14 27 45.8 497.6 -2.0 -20.9 24 1515 20 15 30 20 25 30 --- 15 24 28 46.6 500.7 -1.9 -19.6 600 1592 20 15 31 Schedule for SVETLOE (Code Sv ) Page 4 J1715+2145 imaging @ C-band 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 6 Jun 2019 Day 157 --- 20 26 00 J1716+2152 15 24 58 46.6 500.6 -1.9 -19.7 20 1592 20 26 00 20 27 00 =1714+219 15 25 58 46.7 500.9 -1.9 -19.5 60 1600 20 26 01 20 27 30 1713+21M 15 26 28 46.7 501.4 -1.8 -19.3 20 1600 20 27 30 20 37 30 --- 15 36 30 47.5 504.6 -1.7 -17.9 600 1677 20 27 31 20 38 00 1713+21M 15 37 00 47.5 504.8 -1.7 -17.8 24 1677 20 38 00 20 48 00 --- 15 47 02 48.2 508.1 -1.5 -16.2 600 1754 20 38 01 20 48 30 1713+21M 15 47 32 48.2 508.3 -1.5 -16.2 24 1754 20 48 30 20 58 30 --- 15 57 34 48.8 511.7 -1.3 -14.6 600 1831 20 48 31 20 59 00 J1716+2152 15 58 04 48.9 511.5 -1.3 -14.6 20 1831 20 59 00 21 00 00 =1714+219 15 59 04 49.0 511.8 -1.3 -14.5 60 1838 20 59 01 21 00 30 1713+21M 15 59 34 49.0 512.4 -1.3 -14.2 20 1838 21 00 30 21 10 30 --- 16 09 36 49.5 515.8 -1.1 -12.5 600 1915 21 00 31 21 11 00 1713+21M 16 10 06 49.5 516.0 -1.1 -12.4 24 1915 21 11 00 21 21 00 --- 16 20 07 50.0 519.5 -0.9 -10.7 600 1992 21 11 01 21 21 30 1713+21M 16 20 37 50.0 519.7 -0.9 -10.6 24 1992 21 21 30 21 31 30 --- 16 30 39 50.4 523.3 -0.8 -8.8 600 2069 21 21 31 21 32 00 J1716+2152 16 31 09 50.5 523.1 -0.8 -8.8 20 2069 21 32 00 21 33 00 =1714+219 16 32 09 50.5 523.5 -0.7 -8.7 60 2077 21 32 01 21 33 30 1713+21M 16 32 39 50.5 524.0 -0.7 -8.4 20 2077 21 33 30 21 43 30 --- 16 42 41 50.8 527.7 -0.6 -6.5 600 2154 21 33 31 21 44 00 1713+21M 16 43 11 50.8 527.8 -0.5 -6.4 24 2154 21 44 00 21 54 00 --- 16 53 13 51.0 531.5 -0.4 -4.5 600 2231 21 44 01 21 54 30 1713+21M 16 53 43 51.0 531.7 -0.4 -4.4 24 2231 21 54 30 22 04 30 --- 17 03 44 51.2 535.4 -0.2 -2.4 600 2308 21 54 31 22 05 00 J1716+2152 17 04 14 51.3 535.3 -0.2 -2.5 20 2308 22 05 00 22 06 00 =1714+219 17 05 15 51.3 535.6 -0.2 -2.3 60 2315 22 05 01 22 06 30 1713+21M 17 05 45 51.2 536.1 -0.2 -2.0 20 2315 22 06 30 22 16 30 --- 17 15 46 51.2 539.9 -0.0 -0.1 600 2392 22 06 31 22 17 00 1713+21M 17 16 16 51.2 540.0 0.0 0.0 24 2392 22 17 00 22 27 00 --- 17 26 18 51.2 543.8 0.2 2.0 600 2469 22 17 01 Schedule for SVETLOE (Code Sv ) Page 5 J1715+2145 imaging @ C-band 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 6 Jun 2019 Day 157 --- ---------- Ef pointing check please ---------- 22 27 30 1713+21M 17 26 48 51.2 543.9 0.2 2.1 24 2469 22 27 30 22 37 30 --- 17 36 50 51.0 547.6 0.3 4.0 600 2546 22 27 31 22 44 30 J1716+2152 17 43 51 51.0 549.9 0.4 5.2 411 2546 22 44 30 22 45 30 =1714+219 17 44 51 51.0 550.3 0.5 5.4 60 2554 22 44 31 22 46 00 1713+21M 17 45 21 50.9 550.8 0.5 5.7 20 2554 22 46 00 22 56 00 --- 17 55 23 50.6 554.4 0.7 7.6 600 2631 22 46 01 22 56 30 1713+21M 17 55 53 50.6 554.6 0.7 7.7 24 2631 22 56 30 23 06 30 --- 18 05 55 50.2 558.2 0.8 9.5 600 2708 22 56 31 23 07 00 1713+21M 18 06 25 50.2 558.4 0.8 9.6 24 2708 23 07 00 23 17 00 --- 18 16 26 49.8 562.0 1.0 11.4 600 2785 23 07 01 23 17 30 J1716+2152 18 16 56 49.9 561.9 1.0 11.4 21 2785 23 17 30 23 18 30 =1714+219 18 17 57 49.9 562.2 1.0 11.6 60 2792 23 17 31 23 19 00 1713+21M 18 18 27 49.7 562.7 1.0 11.8 20 2792 23 19 00 23 29 00 --- 18 28 28 49.2 566.2 1.2 13.5 600 2869 23 19 01 23 29 30 1713+21M 18 28 58 49.2 566.3 1.2 13.6 24 2869 23 29 30 23 39 30 --- 18 39 00 48.6 569.8 1.4 15.2 600 2946 23 29 31 23 40 00 1713+21M 18 39 30 48.6 569.9 1.4 15.3 24 2946 23 40 00 23 50 00 --- 18 49 32 47.9 573.3 1.6 16.9 600 3023 23 40 01 23 50 30 J1716+2152 18 50 02 48.0 573.2 1.6 16.9 21 3023 23 50 30 23 51 30 =1714+219 18 51 02 48.0 573.6 1.6 17.0 60 3031 23 50 31 --- Start: Thu 6 Jun 2019 Day 157 -- Stop: Fri 7 Jun 2019 Day 158 --- 23 52 00 1713+21M 18 51 32 47.8 574.0 1.6 17.2 20 3031 23 52 00 00 02 00 --- 19 01 34 47.1 577.2 1.8 18.7 600 3108 23 52 01 00 02 30 1713+21M 19 02 04 47.0 577.4 1.8 18.8 24 3108 00 02 30 00 12 30 --- 19 12 05 46.2 580.6 1.9 20.2 600 3185 00 02 31 00 13 00 1713+21M 19 12 36 46.2 580.8 1.9 20.2 24 3185 00 13 00 00 23 00 --- 19 22 37 45.4 583.9 2.1 21.5 600 3262 00 13 01 00 23 30 J1716+2152 19 23 07 45.5 583.8 2.1 21.5 21 3262 00 23 30 00 24 30 =1714+219 19 24 07 45.4 584.1 2.1 21.7 60 3269 00 23 31 Schedule for SVETLOE (Code Sv ) Page 6 J1715+2145 imaging @ C-band 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 7 Jun 2019 Day 158 --- 00 25 00 1713+21M 19 24 37 45.2 584.5 2.1 21.8 21 3269 00 25 00 00 35 00 --- 19 34 39 44.3 587.5 2.3 23.0 600 3346 00 25 01 00 35 30 1713+21M 19 35 09 44.3 587.7 2.3 23.0 24 3346 00 35 30 00 45 30 --- 19 45 11 43.3 590.6 2.5 24.2 600 3423 00 35 31 00 46 00 1713+21M 19 45 41 43.3 590.8 2.5 24.2 24 3423 00 46 00 00 56 00 --- 19 55 43 42.3 593.7 2.7 25.3 600 3500 00 46 01 00 56 30 J1716+2152 19 56 13 42.4 593.6 2.7 25.3 21 3500 00 56 30 00 57 30 =1714+219 19 57 13 42.3 593.9 2.7 25.4 60 3508 00 56 31 00 58 00 1713+21M 19 57 43 42.1 594.2 2.7 25.4 21 3508 00 58 00 01 08 00 --- 20 07 45 41.1 597.0 2.9 26.4 600 3585 00 58 01 01 08 30 1713+21M 20 08 15 41.0 597.2 2.9 26.4 24 3585 01 08 30 01 18 30 --- 20 18 16 40.0 599.9 3.0 27.3 600 3662 01 08 31 01 19 00 1713+21M 20 18 46 39.9 600.0 3.0 27.3 24 3662 01 19 00 01 29 00 --- 20 28 48 38.9 602.7 3.2 28.1 600 3738 01 19 01 01 29 30 J1716+2152 20 29 18 39.0 602.7 3.2 28.1 21 3738 01 29 30 01 30 30 =1714+219 20 30 18 38.9 602.9 3.2 28.2 60 3746 01 29 31 01 31 00 1713+21M 20 30 48 38.6 603.2 3.2 28.2 21 3746 01 31 00 01 41 00 --- 20 40 50 37.5 605.8 3.4 28.9 600 3823 01 31 01 01 41 30 1713+21M 20 41 20 37.5 605.9 3.4 28.9 24 3823 01 41 30 01 51 30 --- 20 51 22 36.3 608.5 3.6 29.5 600 3900 01 41 31 01 52 00 1713+21M 20 51 52 36.3 608.6 3.6 29.5 24 3900 01 52 00 02 02 00 --- 21 01 53 35.1 611.1 3.8 30.1 600 3977 01 52 01 02 02 30 J1716+2152 21 02 24 35.2 611.1 3.8 30.1 21 3977 02 02 30 02 03 30 =1714+219 21 03 24 35.1 611.3 3.8 30.1 60 3985 02 02 31 02 04 00 1713+21M 21 03 54 34.9 611.6 3.8 30.2 21 3985 02 04 00 02 14 00 --- 21 13 55 33.7 614.0 4.0 30.6 600 4062 02 04 01 02 14 30 1713+21M 21 14 25 33.6 614.1 4.0 30.6 24 4062 02 14 30 02 24 30 --- 21 24 27 32.5 616.5 4.1 31.0 600 4138 02 14 31 02 25 00 1713+21M 21 24 57 32.4 616.7 4.1 31.0 24 4138 02 25 00 02 30 00 --- 21 29 58 31.8 617.8 4.2 31.2 300 4177 02 25 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.C1024 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: kvzr_c Added by Des Small, 24 February 2012 Setup group: 1 Station: SVETLOE Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 BBC SB= L L U U L L U U L L U U L L U U IF = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 11 Setup file default. Used with PCAL = off LO sum= 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 BBC fr= 442.49 442.49 442.49 442.49 474.49 474.49 474.49 474.49 506.49 506.49 506.49 506.49 538.49 538.49 538.49 538.49 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 11 12 13 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 1713+21M 17 13 12.457730 * 17 15 20.063100 17 16 10.206358 0.00 21 49 14.88987 * 21 45 56.33400 21 44 44.14027 0.00 From catalog imbedded in main SCHED input file. mid-point between the two targets * 1156+295 11 56 57.786211 * 11 59 31.833912 12 00 30.776679 0.00 J1159+2914 29 31 25.73880 * 29 14 43.82690 29 08 28.87403 0.00 J1159+29 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 78215 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 01.961223 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 48.21904 0.16 1328+307 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 observations. 1714+219 17 14 03.743305 * 17 16 11.190717 17 17 01.274565 0.11 * J1716+2152 21 55 28.56442 * 21 52 13.66744 21 51 02.84436 0.16 J1716+21 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 136 observations. * 1739+522 17 39 29.003554 * 17 40 36.977851 17 41 05.059591 0.19 J1740+5211 52 13 10.43847 * 52 11 43.40742 52 11 11.28812 0.15 J1740+52 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 215623 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 1713+21M sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 8.417 1480.333 1156+295 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.167 35.000 3C286 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.167 34.873 J1716+2152 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.283 49.001 1739+522 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 16 + 0.033 5.098 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) 1713+21M 135.4 1156+295 91.5 3C286 107.3 J1716+2152 135.2 1739+522 104.6 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