COVER INFORMATION Station: HART (Code Hh ) Experiment: Network Monitoring Experiment Exp. Code: N25K1 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: 1.3cm 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. COVER LETTER: This is the schedule for the 1.3 cm K-band fringe test on 24th February 2025 involving 18 antennas: Jb2 Ef Nt O6 T6 Ur Tr Ys Hh Kt Ky Ku Kc Sr Cm Da Kn Pi. The FTP-NME uses a standard setup at 4096 Mbps, except: Ur (2048) Cm Da Kn Pi (512) The schedule consists of long integrations on J0530+1331, J0741+3112 and OJ287 Ftp-fringe tests are scheduled as follows : 15:13:00 (scan 2, 2 sec, J0530+1331) 15:43:00 (scan 4, 2 sec, J0530+1331) 16:13:00 (scan 6, 2 sec, J0530+1331) 16:48:00 (scan 8, 2 sec, J0741+3112) 17:18:00 (scan 10, 2 sec, J0741+3112) 17:48:00 (scan 12, 2 sec, OJ287) 17:58:00 (scan 13, 2 sec, OJ287) 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 ---------------------------------------------------------------------------------------- --- Mon 24 Feb 2025 Day 55 --- Next scan frequencies: 21901.00 21901.00 21901.00 21901.00 21965.00 21965.00 21965.00 21965.00 22029.00 22029.00 22029.00 22029.00 22093.00 22093.00 22093.00 22093.00 22157.00 22157.00 22157.00 22157.00 22221.00 22221.00 22221.00 22221.00 22285.00 22285.00 22285.00 22285.00 22349.00 22349.00 22349.00 22349.00 Next BBC frequencies: 544.00 544.00 544.00 544.00 608.00 608.00 608.00 608.00 672.00 672.00 672.00 672.00 736.00 736.00 736.00 736.00 800.00 800.00 800.00 800.00 864.00 864.00 864.00 864.00 928.00 928.00 928.00 928.00 992.00 992.00 992.00 992.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 15 00 00 J0530+1331 03 09 42 37.5 45.6 -2.4 0.0 0 0 15 00 00 15 05 00 =0528+134 03 14 43 38.3 44.4 -2.3 0.0 300 155 15 00 01 15 10 00 J0530+1331 03 19 44 39.0 43.2 -2.2 0.0 279 155 15 10 00 15 15 00 =0528+134 03 24 45 39.8 42.0 -2.1 0.0 300 309 15 10 01 15 20 00 J0530+1331 03 29 46 40.5 40.7 -2.0 0.0 279 309 15 20 00 15 30 00 =0528+134 03 39 47 42.0 38.1 -1.9 0.0 600 618 15 20 01 15 35 00 J0530+1331 03 44 48 42.7 36.7 -1.8 0.0 279 618 15 35 00 15 45 00 =0528+134 03 54 50 44.0 33.9 -1.6 0.0 600 927 15 35 01 15 50 00 J0530+1331 03 59 50 44.6 32.4 -1.5 0.0 279 927 15 50 00 16 00 00 =0528+134 04 09 52 45.7 29.4 -1.4 0.0 600 1237 15 50 01 16 05 00 J0530+1331 04 14 53 46.3 27.8 -1.3 0.0 279 1237 16 05 00 16 15 00 =0528+134 04 24 55 47.3 24.6 -1.1 0.0 600 1546 16 05 01 16 25 00 J0741+3112 04 34 56 17.4 41.0 -3.1 0.0 508 1546 16 25 00 16 35 00 =0738+313 04 44 58 18.9 39.3 -3.0 0.0 600 1855 16 25 01 16 40 00 J0741+3112 04 49 59 19.6 38.5 -2.9 0.0 279 1855 16 40 00 16 50 00 =0738+313 05 00 00 21.0 36.7 -2.7 0.0 600 2164 16 40 01 16 55 00 J0741+3112 05 05 01 21.6 35.8 -2.6 0.0 279 2164 16 55 00 17 05 00 =0738+313 05 15 03 22.9 34.0 -2.5 0.0 600 2473 16 55 01 17 10 00 J0741+3112 05 20 04 23.6 33.0 -2.4 0.0 279 2473 17 10 00 17 20 00 =0738+313 05 30 05 24.7 31.0 -2.2 0.0 600 2782 17 10 01 17 25 00 OJ287 05 35 06 23.0 51.7 -3.4 0.0 237 2782 17 25 00 17 35 00 --- 05 45 08 24.7 50.0 -3.2 0.0 600 3092 17 25 01 Schedule for HART (Code Hh ) Page 3 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 ---------------------------------------------------------------------------------------- --- Mon 24 Feb 2025 Day 55 --- 17 40 00 OJ287 05 50 09 25.6 49.1 -3.1 0.0 279 3092 17 40 00 17 50 00 --- 06 00 10 27.3 47.3 -2.9 0.0 600 3401 17 40 01 17 55 00 OJ287 06 05 11 28.1 46.3 -2.9 0.0 279 3401 17 55 00 18 00 00 --- 06 10 12 28.9 45.4 -2.8 0.0 300 3555 17 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.K4096 --- 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: 4 Station: HART Total bit rate: 4096 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 32 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 21357.00 Net SB= L L U U L L U U L L U U L L U U L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 5 13 5 13 6 14 6 14 7 15 7 15 8 16 8 16 BBC SB= L L U U L L U U L L U U L L U U L L U U L L U U L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 B2 C1 B2 C1 B2 C1 B2 C1 B2 C1 B2 C1 B2 C1 B2 C1 The following frequency sets based on these setups were used. Frequency Set: 10 Setup file default. Used with PCAL = off LO sum= 21901.00 21901.00 21901.00 21901.00 21965.00 21965.00 21965.00 21965.00 22029.00 22029.00 22029.00 22029.00 22093.00 22093.00 22093.00 22093.00 22157.00 22157.00 22157.00 22157.00 22221.00 22221.00 22221.00 22221.00 22285.00 22285.00 22285.00 22285.00 22349.00 22349.00 22349.00 22349.00 BBC fr= 544.00 544.00 544.00 544.00 608.00 608.00 608.00 608.00 672.00 672.00 672.00 672.00 736.00 736.00 736.00 736.00 800.00 800.00 800.00 800.00 864.00 864.00 864.00 864.00 928.00 928.00 928.00 928.00 992.00 992.00 992.00 992.00 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 10 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) 0528+134 05 28 06.759216 * 05 30 56.416746 05 32 22.314764 0.21 * J0530+1331 13 29 42.28882 * 13 31 55.14948 13 33 03.72606 0.24 J0530+13 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 138236 observations. 0738+313 07 38 00.178554 * 07 41 10.703303 07 42 47.857639 0.15 * J0741+3112 31 19 02.05911 * 31 12 00.22910 31 08 31.20687 0.44 J0741+31 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 9707 observations. * OJ287 08 51 57.250615 * 08 54 48.874927 08 56 16.613054 0.00 J0854+2006 20 17 58.41740 * 20 06 30.64085 20 00 42.73850 0.00 0851+202 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0854+20 GSFC 2016a X/S astro solution, 270807 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 J0530+1331 sess125.K4096 1 2 3 4 5 6 7 8 9 10 11 14 + 0.833 127.500 J0741+3112 sess125.K4096 1 2 3 4 5 6 7 8 9 10 11 14 + 0.667 102.000 OJ287 sess125.K4096 1 2 3 4 5 6 7 8 9 10 11 14 + 0.417 63.750 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) J0530+1331 106.6 J0741+3112 135.0 OJ287 154.4 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