COVER INFORMATION Station: CAMBG32M (Code Cm ) Experiment: Network Monitoring Experiment Exp. Code: F25L1 Schedule Version: 1.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Benito Marcote Address: JIVE Oude Hoogeveensedijk 4 7991 PD Dwingeloo The Netherlands Phone: +31 521 596 508 EMAIL: marcote@jive.eu Fax: Phone during observation: +31 521 596 508 Observing mode: vlbi Notes: L-band (18 cm) ftp fringe test for Session 1, 2025. EVN: 1024 Mbps, L+R, 2-bit sampling, 8 BBC, 32 MHz filters eMERLIN: 512 Mbps, L+R, 2-bit sampling, 2 BBC, 64 MHz filters Please DO NOT use the phase cal signal. COVER LETTER: This is the schedule for the 18-cm ftp fringe-test on 28 February 2025 involving 10 EVN antennas + eMERLIN: Jb1, Wb, Ef, Nt, O8, T6, Ur, Tr, Hh, Ir, Cm, Da, Kn, Pi, De The NME uses a standard setup with 1024 Mbps (512 Mbps for eMERLIN). The following ftp-fringe tests are scheduled throughout the experiment (UT times): 11:10:00 (scan 2, 2 sec, J0237+2848) 11:20:00 (scan 4, 2 sec, J0237+2848) 11:30:00 (scan 6, 2 sec, J0237+2848) 11:40:00 (scan 8, 2 sec, J0237+2848) 11:50:00 (scan 10, 2 sec, J0237+2848) Face here what you Learnt during N25L1 :) Mattermost: coms.evlbi.org Schedule for CAMBG32M (Code Cm ) 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 ---------------------------------------------------------------------------------------- --- Fri 28 Feb 2025 Day 59 --- Next scan frequencies: 1626.49 1626.49 Next BBC frequencies: 645.51 645.51 Next scan bandwidths: 64.00 64.00 11 00 00 J0237+2848 21 34 13 30.6 441.1 -5.1 -43.8 0 0 11 00 00 11 05 00 =0234+285 21 39 14 31.4 442.1 -5.0 -43.9 300 19 11 00 01 11 07 00 J0237+2848 21 41 15 31.7 442.4 -5.0 -44.0 116 19 11 07 00 11 12 00 =0234+285 21 46 15 32.4 443.4 -4.9 -44.1 300 39 11 07 01 11 14 00 J0237+2848 21 48 16 32.7 443.7 -4.9 -44.1 116 39 11 14 00 11 17 00 =0234+285 21 51 16 33.2 444.3 -4.8 -44.2 180 50 11 14 01 11 19 00 J0237+2848 21 53 17 33.5 444.7 -4.8 -44.2 116 50 11 19 00 11 22 00 =0234+285 21 56 17 34.0 445.2 -4.7 -44.3 180 62 11 19 01 11 24 00 J0237+2848 21 58 17 34.3 445.6 -4.7 -44.3 116 62 11 24 00 11 27 00 =0234+285 22 01 18 34.7 446.2 -4.6 -44.4 180 73 11 24 01 11 29 00 J0237+2848 22 03 18 35.0 446.6 -4.6 -44.4 116 73 11 29 00 11 32 00 =0234+285 22 06 19 35.5 447.2 -4.6 -44.4 180 85 11 29 01 11 34 00 J0237+2848 22 08 19 35.8 447.5 -4.5 -44.4 116 85 11 34 00 11 37 00 =0234+285 22 11 20 36.3 448.1 -4.5 -44.5 180 97 11 34 01 11 39 00 J0237+2848 22 13 20 36.6 448.5 -4.4 -44.5 116 97 11 39 00 11 42 00 =0234+285 22 16 20 37.0 449.1 -4.4 -44.5 180 108 11 39 01 11 44 00 J0237+2848 22 18 21 37.3 449.5 -4.4 -44.5 116 108 11 44 00 11 47 00 =0234+285 22 21 21 37.8 450.1 -4.3 -44.5 180 120 11 44 01 11 49 00 J0237+2848 22 23 21 38.1 450.5 -4.3 -44.5 116 120 11 49 00 11 52 00 =0234+285 22 26 22 38.6 451.1 -4.2 -44.5 180 131 11 49 01 11 55 00 J0237+2848 22 29 22 39.0 451.7 -4.2 -44.5 176 131 11 55 00 12 00 00 =0234+285 22 34 23 39.8 452.7 -4.1 -44.4 300 151 11 55 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess125.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: CAMBG32M Total bit rate: 512 Format: VDIF Bits per sample: 2 Sample rate:128.000 Number of channels: 2 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 2272.00 2272.00 Net SB= U U IF SB = L L Pol. = RCP LCP BBC = 1 9 BBC SB= L L IF = A1 B1 The following frequency sets based on these setups were used. Frequency Set: 11 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 BBC fr= 645.51 645.51 Bandwd= 64.00 64.00 Matching frequency sets: 11 12 13 14 15 Track assignments are: track1= 1, 2 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) 0234+285 02 34 55.589593 * 02 37 52.405680 02 39 20.746482 0.11 * J0237+2848 28 35 11.40778 * 28 48 08.99003 28 54 45.32687 0.10 From catalog imbedded in main SCHED input file. 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 J0237+2848 sess125.L1024 1 2 3 4 5 6 7 8 9 10 11 0.650 68.250 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) J0237+2848 66.9 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