COVER INFORMATION Station: PICKMERE (Code Pi ) 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 PICKMERE (Code Pi ) 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 24 18 29.3 79.9 -5.3 -42.3 0 0 11 00 00 11 05 00 =0234+285 21 29 18 30.0 80.9 -5.2 -42.4 300 19 11 00 01 11 07 00 J0237+2848 21 31 19 30.3 81.3 -5.1 -42.5 115 19 11 07 00 11 12 00 =0234+285 21 36 20 31.1 82.2 -5.1 -42.6 300 39 11 07 01 11 14 00 J0237+2848 21 38 20 31.4 82.6 -5.0 -42.6 115 39 11 14 00 11 17 00 =0234+285 21 41 20 31.8 83.1 -5.0 -42.7 180 50 11 14 01 11 19 00 J0237+2848 21 43 21 32.1 83.5 -4.9 -42.7 115 50 11 19 00 11 22 00 =0234+285 21 46 21 32.6 84.1 -4.9 -42.8 180 62 11 19 01 11 24 00 J0237+2848 21 48 22 32.9 84.5 -4.8 -42.8 115 62 11 24 00 11 27 00 =0234+285 21 51 22 33.3 85.1 -4.8 -42.9 180 73 11 24 01 11 29 00 J0237+2848 21 53 22 33.6 85.4 -4.8 -42.9 115 73 11 29 00 11 32 00 =0234+285 21 56 23 34.1 86.0 -4.7 -42.9 180 85 11 29 01 11 34 00 J0237+2848 21 58 23 34.4 86.4 -4.7 -43.0 115 85 11 34 00 11 37 00 =0234+285 22 01 24 34.8 87.0 -4.6 -43.0 180 97 11 34 01 11 39 00 J0237+2848 22 03 24 35.1 87.4 -4.6 -43.0 115 97 11 39 00 11 42 00 =0234+285 22 06 25 35.6 88.0 -4.5 -43.0 180 108 11 39 01 11 44 00 J0237+2848 22 08 25 35.9 88.4 -4.5 -43.0 115 108 11 44 00 11 47 00 =0234+285 22 11 25 36.3 89.0 -4.5 -43.1 180 120 11 44 01 11 49 00 J0237+2848 22 13 26 36.6 89.4 -4.4 -43.1 115 120 11 49 00 11 52 00 =0234+285 22 16 26 37.1 90.0 -4.4 -43.1 180 131 11 49 01 11 55 00 J0237+2848 22 19 27 37.5 90.6 -4.3 -43.1 175 131 11 55 00 12 00 00 =0234+285 22 24 27 38.3 91.6 -4.2 -43.1 300 151 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: 14 Station: PICKMERE 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