COVER INFORMATION Station: DARNHALL (Code Da ) Experiment: Network Monitoring Experiment Exp. Code: N25C1 Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Junghwan Oh Address: JIVE Oude Hoogeveensedijk 4 7991PD Dwingeloo The Netherlands Phone: +31 521 596 508 EMAIL: oh@jive.eu Fax: Phone during observation: +31 521 596 508 Observing mode: Notes: 6cm NME and ftp fringe test for 2025 Session 1 (4096 Mbps, L+R, 2-bit sampling, 32 MHz filters) Please DO NOT use the phase cal signal. v2: removed ftp fringe-test segment from scan 13 COVER LETTER: This is the schedule for the 6 cm C-band fringe test on 7th March 2025 involving 15 antennas: Jb1 Wb Ef On85 T6 Ur Tr Ys Hh Sr Cm Da De Kn Pi. The FTP-NME uses a standard setup at 4096 Mbps. The schedule consists of long integrations on J0238+1636 and J0530+1331 Ftp-fringe tests are scheduled as follows : 12:13:00 (scan 2, 2 sec, J0238+1636) 12:43:00 (scan 4, 2 sec, J0238+1636) 13:18:00 (scan 6, 2 sec, J0530+1331) 13:48:00 (scan 8, 2 sec, J0530+1331) 14:18:00 (scan 10, 2 sec, J0530+1331) 14:48:00 (scan 12, 2 sec, J0530+1331) Mattermost: coms.evlbi.org Schedule for DARNHALL (Code Da ) 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 7 Mar 2025 Day 66 --- Next scan frequencies: 4888.00 4888.00 Next BBC frequencies: 736.00 736.00 Next scan bandwidths: 64.00 64.00 12 00 00 J0238+1636 22 51 42 32.8 106.9 -3.8 -36.8 0 0 12 00 00 12 05 00 =0235+164 22 56 43 33.6 108.0 -3.7 -36.5 300 19 12 00 01 12 10 00 J0238+1636 23 01 43 34.3 109.2 -3.6 -36.3 294 19 12 10 00 12 15 00 =0235+164 23 06 44 35.0 110.4 -3.6 -35.9 300 39 12 10 01 12 20 00 J0238+1636 23 11 45 35.7 111.6 -3.5 -35.6 294 39 12 20 00 12 30 00 =0235+164 23 21 47 37.1 114.0 -3.3 -34.9 600 77 12 20 01 12 35 00 J0238+1636 23 26 47 37.8 115.2 -3.2 -34.5 294 77 12 35 00 12 45 00 =0235+164 23 36 49 39.1 117.8 -3.1 -33.6 600 116 12 35 01 12 50 00 J0238+1636 23 41 50 39.8 119.1 -3.0 -33.2 294 116 12 50 00 13 00 00 =0235+164 23 51 52 41.1 121.7 -2.8 -32.2 600 155 12 50 01 13 10 00 J0530+1331 00 01 53 15.2 87.6 -5.5 -38.0 470 155 13 10 00 13 20 00 =0528+134 00 11 55 16.7 89.6 -5.3 -38.1 600 193 13 10 01 13 25 00 J0530+1331 00 16 56 17.5 90.6 -5.3 -38.1 294 193 13 25 00 13 35 00 =0528+134 00 26 57 19.0 92.6 -5.1 -38.0 600 232 13 25 01 13 40 00 J0530+1331 00 31 58 19.7 93.6 -5.0 -38.0 294 232 13 40 00 13 50 00 =0528+134 00 42 00 21.2 95.7 -4.8 -37.9 600 271 13 40 01 13 55 00 J0530+1331 00 47 01 22.0 96.7 -4.8 -37.8 294 271 13 55 00 14 05 00 =0528+134 00 57 02 23.5 98.8 -4.6 -37.6 600 309 13 55 01 14 10 00 J0530+1331 01 02 03 24.2 99.9 -4.5 -37.4 294 309 14 10 00 14 20 00 =0528+134 01 12 05 25.7 102.0 -4.3 -37.1 600 348 14 10 01 14 25 00 J0530+1331 01 17 06 26.4 103.1 -4.3 -36.9 294 348 14 25 00 14 35 00 =0528+134 01 27 07 27.9 105.3 -4.1 -36.5 600 386 14 25 01 14 40 00 J0530+1331 01 32 08 28.6 106.4 -4.0 -36.3 294 386 14 40 00 14 50 00 =0528+134 01 42 10 30.0 108.7 -3.8 -35.8 600 425 14 40 01 14 55 00 J0530+1331 01 47 10 30.7 109.8 -3.8 -35.5 294 425 14 55 00 15 00 00 =0528+134 01 52 11 31.4 111.0 -3.7 -35.2 300 444 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: sess125.C4096 --- 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: 12 Station: DARNHALL 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= 5624.00 5624.00 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= 4888.00 4888.00 BBC fr= 736.00 736.00 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) 0235+164 02 35 52.630214 * 02 38 38.930106 02 40 01.989621 0.12 * J0238+1636 16 24 04.01612 * 16 36 59.27454 16 43 30.10101 0.16 J0238+16 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 64441 observations. 0528+134 05 28 06.759216 * 05 30 56.416746 05 32 22.134738 0.21 * J0530+1331 13 29 42.28882 * 13 31 55.14948 13 33 03.55493 0.24 J0530+13 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 138236 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 J0238+1636 sess125.C4096 1 2 3 4 5 6 7 9 10 11 0.667 70.000 J0530+1331 sess125.C4096 1 2 3 4 5 6 7 9 10 11 1.250 131.250 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) J0238+1636 55.6 J0530+1331 95.9 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