COVER INFORMATION Station: HART (Code Hh ) Experiment: Network Monitoring Experiment Exp. Code: N25L1 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) NME and 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 NME and ftp fringe-test on 20 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): 12:10:00 (scan 2, 2 sec, J0237+2848) 12:40:00 (scan 4, 2 sec, J0237+2848) 13:10:00 (scan 6, 2 sec, J0237+2848) 13:40:00 (scan 8, 2 sec, J0237+2848) 14:10:00 (scan 10, 2 sec, J0237+2848) 14:40:00 (scan 12, 2 sec, J0237+2848) New year new observations! Mattermost: coms.evlbi.org Schedule for HART (Code Hh ) 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 20 Feb 2025 Day 51 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 116.49 116.49 116.49 116.49 180.49 180.49 180.49 180.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 12 00 00 J0237+2848 23 53 26 22.3 38.8 -2.8 0.0 0 0 12 00 00 12 05 00 =0234+285 23 58 27 23.0 37.9 -2.7 0.0 300 39 12 00 01 12 07 00 J0237+2848 00 00 28 23.2 37.5 -2.6 0.0 99 39 12 07 00 12 12 00 =0234+285 00 05 28 23.9 36.6 -2.6 0.0 300 77 12 07 01 12 17 00 J0237+2848 00 10 29 24.6 35.6 -2.5 0.0 279 77 12 17 00 12 27 00 =0234+285 00 20 31 25.9 33.6 -2.3 0.0 600 155 12 17 01 12 32 00 J0237+2848 00 25 32 26.5 32.6 -2.2 0.0 279 155 12 32 00 12 42 00 =0234+285 00 35 33 27.7 30.5 -2.1 0.0 600 232 12 32 01 12 47 00 J0237+2848 00 40 34 28.2 29.5 -2.0 0.0 279 232 12 47 00 12 57 00 =0234+285 00 50 36 29.3 27.3 -1.8 0.0 600 309 12 47 01 13 02 00 J0237+2848 00 55 37 29.8 26.2 -1.7 0.0 279 309 13 02 00 13 12 00 =0234+285 01 05 38 30.8 23.9 -1.6 0.0 600 386 13 02 01 13 17 00 J0237+2848 01 10 39 31.2 22.7 -1.5 0.0 279 386 13 17 00 13 27 00 =0234+285 01 20 41 32.0 20.3 -1.3 0.0 600 464 13 17 01 13 32 00 J0237+2848 01 25 42 32.4 19.1 -1.2 0.0 279 464 13 32 00 13 42 00 =0234+285 01 35 43 33.1 16.6 -1.1 0.0 600 541 13 32 01 13 47 00 J0237+2848 01 40 44 33.4 15.4 -1.0 0.0 279 541 13 47 00 13 57 00 =0234+285 01 50 46 34.0 12.8 -0.8 0.0 600 618 13 47 01 14 02 00 J0237+2848 01 55 46 34.2 11.5 -0.7 0.0 279 618 14 02 00 14 12 00 =0234+285 02 05 48 34.6 8.9 -0.6 0.0 600 696 14 02 01 14 17 00 J0237+2848 02 10 49 34.8 7.6 -0.5 0.0 279 696 14 17 00 14 27 00 =0234+285 02 20 51 35.0 4.9 -0.3 0.0 600 773 14 17 01 14 32 00 J0237+2848 02 25 51 35.1 3.6 -0.2 0.0 279 773 14 32 00 14 42 00 =0234+285 02 35 53 35.2 0.9 -0.1 0.0 600 850 14 32 01 14 47 00 J0237+2848 02 40 54 35.2 359.6 0.0 0.0 279 850 14 47 00 15 00 00 =0234+285 02 53 56 35.1 356.1 0.2 0.0 780 951 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: sess125.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: hh18cm Values confirmed by E-mail Jonathan Quick 20140219 (CR) ****** Only 122.49 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 5 Station: HART 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= 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 1510.00 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 = A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 9 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= 116.49 116.49 116.49 116.49 180.49 180.49 180.49 180.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 9 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 20.850129 0.11 * J0237+2848 28 35 11.40778 * 28 48 08.99003 28 54 45.77913 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 2.050 215.250 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 74.7 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