COVER INFORMATION Station: SVETLOE (Code Sv ) Experiment: Network Monitoring Experiment Exp. Code: N20L3 Schedule Version: 1.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Dhanya Nair Address: JIVE Oude Hoogeveensedijk 4 7991PD Dwingeloo The Netherlands Phone: +31 521 596 508 EMAIL: nair@jive.eu Fax: Phone during observation: +31 521 596 508 Observing mode: Notes: 18cm NME and ftp fringe test for Session 3 2020 (MODE1: 1024 Mbps, L+R, 2-bit sampling, 16 BBC Channels, 16 MHz filters) (MODE2: 1024 Mbps, L+R, 2-bit sampling, 8 BBc Channels, 32 MHz filters) COVER LETTER: This is the schedule for the 18cm NME and ftp fringe-test on 31st Oct 2020 involving antennas: Jb1, Wb1, Ef, Mc, Nt, On85, T6, Ur, Tr, Hh, Sv, Zc, Bd, Ir, Sr, eMERLIN The NME uses a standard setup with 1024 Mbps. The schedule consists of long integrations on strong calibrators: The following ftp-fringe tests are scheduled throughout the experiment (UT times): Mode: 1024 Mbps, 16 BBC channels, 16 MHz filters, 2-bit sampling 11:15:00 (scan 2, 2 sec, J1751+0939 ) 11:45:00 (scan 4, 2 sec, J1751+0939 ) 12:15:00 (scan 6, 2 sec, J1642+3948 ) Mode: 1024 Mbps, 8 BBC channels, 32 MHz filters, 2-bit sampling 12:45:00 (scan 8, 2 sec, J1642+3948 ) 13:15:00 (scan 10, 2 sec, J1848+3219 ) 13:45:00 (scan 12, 2 sec, J1848+3219 ) Clear Skies! Dhanya Nair Mattermost: coms.evlbi.org Schedule for SVETLOE (Code Sv ) Page 2 Network Monitoring Experiment 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 ---------------------------------------------------------------------------------------- --- Sat 31 Oct 2020 Day 305 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 350.49 350.49 350.49 350.49 382.49 382.49 382.49 382.49 414.49 414.49 414.49 414.49 446.49 446.49 446.49 446.49 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 11 00 00 J1751+0939 15 39 58 33.5 499.7 -2.2 -18.8 0 0 11 00 00 11 04 00 =1749+096 15 43 59 33.8 500.9 -2.1 -18.4 240 31 11 00 01 11 07 00 J1751+0939 15 46 59 34.1 501.7 -2.1 -18.0 173 31 11 07 00 11 17 00 =1749+096 15 57 01 34.8 504.6 -1.9 -16.8 600 108 11 07 01 11 20 00 J1751+0939 16 00 01 35.0 505.4 -1.9 -16.4 173 108 11 20 00 11 32 00 =1749+096 16 12 03 35.8 508.9 -1.7 -14.9 720 200 11 20 01 11 35 00 J1751+0939 16 15 04 36.0 509.8 -1.6 -14.5 173 200 11 35 00 11 47 00 =1749+096 16 27 06 36.7 513.4 -1.4 -12.9 720 292 11 35 01 11 50 00 J1751+0939 16 30 06 36.9 514.3 -1.4 -12.5 173 292 11 50 00 12 02 00 =1749+096 16 42 08 37.5 518.0 -1.2 -10.8 720 385 11 50 01 12 05 00 J1642+3948 16 45 09 69.2 540.8 0.0 0.5 101 385 12 05 00 12 17 00 =3C345 16 57 11 69.1 547.3 0.2 4.7 720 477 12 05 01 Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 366.49 366.49 366.49 366.49 430.49 430.49 430.49 430.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 12 24 00 J1642+3948 17 04 12 69.0 551.1 0.3 7.1 411 477 12 24 00 12 32 00 =3C345 17 12 13 68.8 555.3 0.5 9.7 480 538 12 24 25 12 35 00 J1642+3948 17 15 14 68.7 556.9 0.5 10.7 172 538 12 35 00 12 47 00 =3C345 17 27 16 68.2 563.0 0.7 14.5 720 631 12 35 01 12 50 00 J1848+3219 17 30 16 59.0 506.4 -1.3 -18.8 98 631 12 50 00 13 02 00 =1846+322 17 42 18 59.8 511.2 -1.1 -16.3 720 723 12 50 01 13 05 00 J1848+3219 17 45 19 59.9 512.4 -1.1 -15.7 173 723 13 05 00 13 17 00 =1846+322 17 57 21 60.6 517.4 -0.9 -13.0 720 815 13 05 01 13 20 00 J1848+3219 18 00 21 60.7 518.6 -0.8 -12.3 173 815 13 20 00 13 32 00 =1846+322 18 12 23 61.2 523.8 -0.6 -9.4 720 908 13 20 01 13 35 00 J1848+3219 18 15 24 61.3 525.1 -0.6 -8.6 173 908 13 35 00 13 47 00 =1846+322 18 27 26 61.6 530.3 -0.4 -5.6 720 1000 13 35 01 Schedule for SVETLOE (Code Sv ) Page 3 Network Monitoring Experiment 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 ---------------------------------------------------------------------------------------- --- Sat 31 Oct 2020 Day 305 --- 13 50 00 J1848+3219 18 30 26 61.6 531.7 -0.3 -4.8 173 1000 13 50 00 14 00 00 =1846+322 18 40 28 61.8 536.1 -0.1 -2.3 600 1077 13 50 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess320.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: kvzr_l passed by Alexey Melnikov, Mar2014 ****** Only 251.02 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. 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= 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 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= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 350.49 350.49 350.49 350.49 382.49 382.49 382.49 382.49 414.49 414.49 414.49 414.49 446.49 446.49 446.49 446.49 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 ======== Setup file: sess320.L1024_32 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: kvzr_l passed by Alexey Melnikov, Mar2014 ****** Only 251.02 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 21 Station: SVETLOE Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 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 = A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 31 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= 366.49 366.49 366.49 366.49 430.49 430.49 430.49 430.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 31 32 33 Track assignments are: track1= 10, 14, 2, 6, 12, 16, 4, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) 3C345 16 41 17.606229 * 16 42 58.809967 16 43 38.757499 0.79 * J1642+3948 39 54 10.81492 * 39 48 36.99399 39 46 31.91672 0.59 1641+399 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1642+39 GSFC 2016a X/S astro solution, 53724 observations. 1749+096 17 49 10.387930 * 17 51 32.818574 17 52 30.173780 0.00 * J1751+0939 09 39 42.82586 * 09 39 00.72841 09 38 53.60979 0.00 J1751+09 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 192391 observations. 1846+322 18 46 29.612030 * 18 48 22.088573 18 49 07.315688 0.00 * J1848+3219 32 15 36.66044 * 32 19 02.60384 32 20 42.21069 0.00 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 38727 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 J1642+3948 sess320.L1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.200 33.774 sess320.L1024_32 21 22 23 24 25 26 27 28 29 + 0.333 59.533 J1751+0939 sess320.L1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.833 158.333 J1848+3219 sess320.L1024_32 21 22 23 24 25 26 27 28 29 + 0.967 183.665 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) J1642+3948 63.0 J1751+0939 56.8 J1848+3219 78.5 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