COVER INFORMATION Station: KVNUS (Code Ku ) Experiment: Network Monitoring Experiment Exp. Code: N21K2 Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Olga Bayandina Address: JIVE Postbus 2 7990 AA Dwingeloo The Netherlands Phone: +31-521-596508 EMAIL: bayandina@jive.eu Fax: Phone during observation: +31-521-596508 Observing mode: Notes: 1.3 cm (K-band) ftp fringe test for session 2/2021 2048 Mbps, L+R, 2-bit sampling, 16x32 MHz filters Please DO NOT use the phase cal signal. COVER LETTER: This is the schedule for the 1.3 cm K-band fringe test on 7th June 2021 involving 18 telescopes: Jb2 Ef Mc Nt On60 T6 Ur Tr Ys Hh Sv Zc Bd Sr Mh Kt Ky Ku With 2/4 sec integration time The FTP-NME uses a standard setup at 2048 Mbps: The schedule consists of long integrations on strong calibrators: Ftp-fringe tests are scheduled every 20 min throughout the experiment: 12:18:00 J0854+2006 (scan 02, 2 sec) 12:38:00 J0854+2006 (scan 04, 4 sec) 12:58:00 J0854+2006 (scan 06, 2 sec) 13:18:00 J0854+2006 (scan 08, 4 sec) 13:38:00 J1058+0133 (scan 10, 2 sec) 13:58:00 J1058+0133 (scan 12, 4 sec) 14:18:00 J1058+0133 (scan 14, 2 sec) 14:38:00 J1159+2914 (scan 16, 4 sec) 14:58:00 J1159+2914 (scan 18, 2 sec) Clear skies! Olga Bayandina Mattermost: coms.evlbi.org Schedule for KVNUS (Code Ku ) 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 ---------------------------------------------------------------------------------------- --- Mon 7 Jun 2021 Day 158 --- Next scan frequencies: 22139.49 22139.49 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 22139.49 22139.49 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 Next BBC frequencies: 9060.51 9060.51 8996.51 8996.51 8932.51 8932.51 8868.51 8868.51 9060.51 9060.51 8996.51 8996.51 8932.51 8932.51 8868.51 8868.51 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 12 00 00 J0854+2006 13 41 26 26.3 -83.3 4.8 59.3 0 0 12 00 00 12 05 00 =OJ287 13 46 27 25.3 -82.7 4.8 59.2 300 77 12 00 01 12 07 00 J0854+2006 13 48 27 24.9 -82.4 4.9 59.1 118 77 12 07 00 12 20 00 =OJ287 14 01 29 22.3 -80.7 5.1 58.7 780 278 12 07 01 12 22 45 J0854+2006 14 04 15 21.7 -80.3 5.1 58.6 163 278 12 22 45 12 25 00 =OJ287 14 06 30 21.3 -80.0 5.2 58.5 135 313 12 22 46 12 27 00 J0854+2006 14 08 30 20.9 -79.7 5.2 58.5 118 313 12 27 00 12 40 00 =OJ287 14 21 32 18.3 -78.0 5.4 57.9 780 514 12 27 01 12 42 45 J0854+2006 14 24 18 17.7 -77.7 5.5 57.8 163 514 12 42 45 12 45 00 =OJ287 14 26 33 17.3 -77.4 5.5 57.7 135 549 12 42 46 12 47 00 J0854+2006 14 28 34 16.9 -77.1 5.5 57.6 118 549 12 47 00 13 00 00 =OJ287 14 41 36 14.3 -75.4 5.8 56.9 780 750 12 47 01 13 02 00 J0854+2006 14 43 36 13.9 -75.1 5.8 56.8 118 750 13 02 00 13 05 00 =OJ287 14 46 37 13.3 -74.7 5.8 56.7 180 796 13 02 01 13 07 00 J0854+2006 14 48 37 12.9 -74.5 5.9 56.6 118 796 13 07 00 13 20 00 =OJ287 15 01 39 10.4 -72.7 6.1 55.8 780 997 13 07 01 13 23 00 J1058+0133 15 04 40 23.9 253.6 4.1 51.3 66 997 13 23 00 13 25 00 =1055+018 15 06 40 23.5 253.9 4.1 51.4 120 1028 13 23 01 13 27 00 J1058+0133 15 08 40 23.2 254.2 4.2 51.6 118 1028 13 27 00 13 40 00 =1055+018 15 21 42 20.6 256.4 4.4 52.3 780 1229 13 27 01 13 42 00 J1058+0133 15 23 43 20.2 256.7 4.4 52.4 118 1229 13 42 00 13 45 00 =1055+018 15 26 43 19.6 257.2 4.5 52.5 180 1275 13 42 01 13 47 00 J1058+0133 15 28 43 19.2 257.5 4.5 52.6 118 1275 13 47 00 14 00 00 =1055+018 15 41 46 16.6 259.6 4.7 53.2 780 1476 13 47 01 14 02 00 J1058+0133 15 43 46 16.2 259.9 4.7 53.3 118 1476 14 02 00 14 05 00 =1055+018 15 46 46 15.6 260.4 4.8 53.4 180 1523 14 02 01 Schedule for KVNUS (Code Ku ) 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 ---------------------------------------------------------------------------------------- --- Mon 7 Jun 2021 Day 158 --- 14 07 00 J1058+0133 15 48 47 15.2 260.7 4.8 53.4 118 1523 14 07 00 14 20 00 =1055+018 16 01 49 12.6 262.7 5.0 53.8 780 1724 14 07 01 14 23 00 J1159+2914 16 04 49 38.8 281.1 4.1 66.1 168 1724 14 23 00 14 25 00 =1156+295 16 06 50 38.4 281.4 4.1 66.0 120 1755 14 23 01 14 27 00 J1159+2914 16 08 50 38.0 281.6 4.1 65.9 118 1755 14 27 00 14 40 00 =1156+295 16 21 52 35.4 283.1 4.4 65.1 780 1955 14 27 01 14 42 00 J1159+2914 16 23 53 35.0 283.3 4.4 65.0 118 1955 14 42 00 14 45 00 =1156+295 16 26 53 34.4 283.6 4.4 64.9 180 2002 14 42 01 14 47 00 J1159+2914 16 28 53 34.1 283.8 4.5 64.7 118 2002 14 47 00 15 00 00 =1156+295 16 41 55 31.5 285.3 4.7 64.0 780 2203 14 47 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess221.K2048 --- 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: 18 Station: KVNUS Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 31200.00 Net SB= L U L U L U L U L U L U L U L U IF SB = L L L L L L L L L L L L L L L L Pol. = LCP LCP LCP LCP LCP LCP LCP LCP RCP RCP RCP RCP RCP RCP RCP RCP BBC = 1 1 1 1 1 1 1 1 3 3 3 3 3 3 3 3 BBC SB= U L U L U L U L U L U L U L U L IF = A A A A A A A A B B B B B B B B The following frequency sets based on these setups were used. Frequency Set: 16 Setup file default. Used with PCAL = off LO sum= 22139.49 22139.49 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 22139.49 22139.49 22203.49 22203.49 22267.49 22267.49 22331.49 22331.49 BBC fr= 9060.51 9060.51 8996.51 8996.51 8932.51 8932.51 8868.51 8868.51 9060.51 9060.51 8996.51 8996.51 8932.51 8932.51 8868.51 8868.51 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 16 17 18 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) OJ287 08 51 57.250615 * 08 54 48.874927 08 56 00.430136 0.00 * J0854+2006 20 17 58.41740 * 20 06 30.64085 20 01 43.56709 0.00 0851+202 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0854+20 GSFC 2016a X/S astro solution, 270807 observations. 1055+018 10 55 55.313730 * 10 58 29.605208 10 59 34.615738 0.01 * J1058+0133 01 50 03.53722 * 01 33 58.82372 01 27 10.19095 0.01 J1058+01 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 8263 observations. 1156+295 11 56 57.786211 * 11 59 31.833912 12 00 37.134831 0.00 * J1159+2914 29 31 25.73880 * 29 14 43.82690 29 07 48.90660 0.00 J1159+29 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 78215 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 J0854+2006 sess221.K2048 1 2 3 4 5 6 7 8 9 11 14 16 1.075 164.475 J1058+0133 sess221.K2048 1 2 3 4 5 6 7 8 9 11 14 16 0.783 119.850 J1159+2914 sess221.K2048 1 2 3 4 5 6 7 8 9 11 14 16 0.517 79.050 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) J0854+2006 53.8 J1058+0133 88.5 J1159+2914 90.5 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