COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: Network Monitoring Experiment Exp. Code: N23L2 Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Junghwan Oh Address: JIVE Oude Hoogeveensedijk 4 Dwingeloo Netherlands Phone: +31 627454602 EMAIL: oh@jive.eu Fax: Phone during observation: +31 521 596 530 Observing mode: vlbi Notes: L-band (18cm) NME and ftp fringe test for Session 2, 2023. EVN: 1024 Mbps, L+R, 2-bit sampling, 8 BBC, 32 MHz filters MER: 512 Mbps, L+R, 2-bit sampling, 2 BBC, 64 MHz filters COVER LETTER: This is the schedule for the 18cm NME and ftp fringe test on June 8, 2023 involving 10 EVN antennas + eMERLIN: Jb2, Wb, Ef, Mc, Nt, O8, T6, Ur, Tr, Hh, Cm, Da, Kn, Pi, De. The NME uses a standard setup with a datarate of 1024 Mbps (512 Mbps for eMERLIN). The NME lasts for 3 hours and consists of long scans on calibrator J0956+2515 with ftp grabs every other scan at the following times (in UT): 12:10:00 (scan 2, 2 sec, J0956+2515) 12:40:00 (scan 4, 2 sec, J0956+2515) 13:10:00 (scan 6, 2 sec, J0956+2515) 13:40:00 (scan 8, 2 sec, J0956+2515) 14:10:00 (scan 10, 2 sec, J0956+2515) 14:40:00 (scan 12, 2 sec, J0956+2515) 14:57:00 (scan 14, 2 sec, J0956+2515) -- Junghwan Oh Mattermost: coms.evlbi.org Schedule for URUMQI (Code Ur ) 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 ---------------------------------------------------------------------------------------- --- Thu 8 Jun 2023 Day 159 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 526.49 526.49 526.49 526.49 590.49 590.49 590.49 590.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 12 00 00 J0956+2515 10 55 11 68.3 217.1 1.0 28.9 0 0 12 00 00 12 05 00 =0953+254 11 00 12 67.7 219.7 1.0 30.8 300 38 12 00 01 12 10 00 J0956+2515 11 05 12 67.1 222.2 1.1 32.6 297 38 12 10 00 12 15 00 =0953+254 11 10 13 66.5 224.6 1.2 34.3 300 77 12 10 01 12 20 00 J0956+2515 11 15 14 65.8 226.9 1.3 35.8 297 77 12 20 00 12 30 00 =0953+254 11 25 16 64.5 231.2 1.5 38.7 600 154 12 20 01 12 35 00 J0956+2515 11 30 16 63.8 233.2 1.5 39.9 298 154 12 35 00 12 45 00 =0953+254 11 40 18 62.3 237.0 1.7 42.2 600 231 12 35 01 12 50 00 J0956+2515 11 45 19 61.5 238.8 1.8 43.3 298 231 12 50 00 13 00 00 =0953+254 11 55 21 59.9 242.1 2.0 45.1 600 308 12 50 01 13 05 00 J0956+2515 12 00 21 59.1 243.6 2.0 45.9 298 308 13 05 00 13 15 00 =0953+254 12 10 23 57.5 246.6 2.2 47.4 600 385 13 05 01 13 20 00 J0956+2515 12 15 24 56.6 248.0 2.3 48.0 298 385 13 20 00 13 30 00 =0953+254 12 25 25 54.9 250.7 2.5 49.2 600 462 13 20 01 13 40 00 J0956+2515 12 35 27 53.2 253.2 2.6 50.1 598 462 13 40 00 13 50 00 =0953+254 12 45 29 51.4 255.5 2.8 50.9 600 538 13 40 01 13 55 00 J0956+2515 12 50 30 50.5 256.7 2.9 51.3 298 538 13 55 00 14 05 00 =0953+254 13 00 31 48.8 258.9 3.0 51.9 600 615 13 55 01 14 10 00 J0956+2515 13 05 32 47.9 259.9 3.1 52.1 298 615 14 10 00 14 20 00 =0953+254 13 15 34 46.1 261.9 3.3 52.5 600 692 14 10 01 14 25 00 J0956+2515 13 20 35 45.2 262.9 3.4 52.7 298 692 14 25 00 14 35 00 =0953+254 13 30 36 43.4 264.8 3.5 53.0 600 769 14 25 01 14 40 00 J0956+2515 13 35 37 42.5 265.8 3.6 53.1 298 769 14 40 00 14 50 00 =0953+254 13 45 39 40.6 267.6 3.8 53.2 600 846 14 40 01 14 55 00 J0956+2515 13 50 39 39.7 268.5 3.9 53.3 298 846 14 55 00 15 00 00 =0953+254 13 55 40 38.8 269.4 4.0 53.3 300 885 14 55 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess223.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: 9 Station: URUMQI Total bit rate: 1024 Format: MARK5B 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= 1100.00 1100.00 1100.00 1100.00 1100.00 1100.00 1100.00 1100.00 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 = A2 C1 A2 C1 A2 C1 A2 C1 The following frequency sets based on these setups were used. Frequency Set: 8 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= 526.49 526.49 526.49 526.49 590.49 590.49 590.49 590.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 8 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) 0953+254 09 53 59.738485 * 09 56 49.875379 09 58 08.548727 0.11 * J0956+2515 25 29 33.58574 * 25 15 16.04984 25 08 45.20186 0.10 From catalog imbedded in main SCHED input file. rfc_2022a Petrov and Kovalev, in preparation 33748 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 J0956+2515 sess223.L1024 1 2 3 4 5 6 7 8 9 10 11 1.917 201.250 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) J0956+2515 65.9 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