COVER INFORMATION Station: JODRELL1 (Code Jb ) 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 JODRELL1 (Code Jb ) 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 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 11 00 00 J0237+2848 21 24 50 29.4 80.0 -5.2 -42.3 0 0 11 00 00 11 05 00 =0234+285 21 29 51 30.1 80.9 -5.2 -42.5 300 39 11 00 01 11 07 00 J0237+2848 21 31 52 30.4 81.3 -5.1 -42.5 112 39 11 07 00 11 12 00 =0234+285 21 36 52 31.2 82.3 -5.0 -42.6 300 77 11 07 01 11 14 00 J0237+2848 21 38 53 31.5 82.6 -5.0 -42.7 112 77 11 14 00 11 17 00 =0234+285 21 41 53 31.9 83.2 -5.0 -42.8 180 100 11 14 01 11 19 00 J0237+2848 21 43 54 32.2 83.6 -4.9 -42.8 112 100 11 19 00 11 22 00 =0234+285 21 46 54 32.7 84.2 -4.9 -42.9 180 124 11 19 01 11 24 00 J0237+2848 21 48 54 32.9 84.5 -4.8 -42.9 112 124 11 24 00 11 27 00 =0234+285 21 51 55 33.4 85.1 -4.8 -42.9 180 147 11 24 01 11 29 00 J0237+2848 21 53 55 33.7 85.5 -4.8 -43.0 112 147 11 29 00 11 32 00 =0234+285 21 56 56 34.1 86.1 -4.7 -43.0 180 170 11 29 01 11 34 00 J0237+2848 21 58 56 34.4 86.5 -4.7 -43.0 112 170 11 34 00 11 37 00 =0234+285 22 01 57 34.9 87.1 -4.6 -43.1 180 193 11 34 01 11 39 00 J0237+2848 22 03 57 35.2 87.5 -4.6 -43.1 112 193 11 39 00 11 42 00 =0234+285 22 06 57 35.6 88.0 -4.5 -43.1 180 216 11 39 01 11 44 00 J0237+2848 22 08 58 35.9 88.4 -4.5 -43.1 112 216 11 44 00 11 47 00 =0234+285 22 11 58 36.4 89.0 -4.5 -43.1 180 240 11 44 01 11 49 00 J0237+2848 22 13 59 36.7 89.4 -4.4 -43.1 112 240 11 49 00 11 52 00 =0234+285 22 16 59 37.1 90.0 -4.4 -43.1 180 263 11 49 01 11 55 00 J0237+2848 22 20 00 37.6 90.6 -4.3 -43.1 172 263 11 55 00 12 00 00 =0234+285 22 25 00 38.3 91.7 -4.2 -43.1 300 301 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: 3 Station: JODRELL1 Total bit rate: 1024 Format: VDIF 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= 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 Net SB= L L U U L L U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= U U L L U U L L IF = A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 1 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= 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 1 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 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