COVER INFORMATION Station: DARNHALL (Code Da ) Experiment: Network Monitoring Experiment Exp. Code: N23C2 Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Suma Murthy Address: JIVE Oude Hoogeveensedijk 4 7991PD Dwingeloo The Netherlands Phone: +31 521 596 508 EMAIL: murthy@jive.eu Fax: Phone during observation: +31 521 596 508 Observing mode: Notes: 6cm NME and ftp fringe test for Session 2 2023 (4096 Mbps, L+R, 2-bit sampling, 32 MHz filters) Please send the disk pack by express to JIVE v.2 - no DBBC3 testing yet COVER LETTER: This is the schedule for the 6cm NME and ftp fringe-test on 25th May 2023 involving the following antennas: Jb2 Wb1 Ef Mc Nt On85 T6 Ur Tr Ys Hh Ib Km Cm Da De Pi Kn The NME uses a standard setup with 4096 Mbps. The schedule consists of long integrations on calibrator J0804+2006. We shall use J0905+2052 for phase referencing. We will also use a single scan on J0806+4504 for the flux calibration of e-MERLIN stations. The following ftp-fringe tests are scheduled throughout the experiment (UT times): 12:13:00 (scan 2, 2 sec, J0804+2006) 12:35:00 (scan 4, 2 sec, J0804+2006) 13:05:00 (scan 6, 2 sec, J0804+2006) 13:35:00 (scan 10, 2 sec, J0804+2006) 14:05:00 (scan 14, 2 sec, J0804+2006) 14:35:00 (scan 18, 2 sec, J0804+2006) Happy C-inging! Suma Murthy 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 ---------------------------------------------------------------------------------------- --- Thu 25 May 2023 Day 145 --- Next scan frequencies: 4888.00 4888.00 Next BBC frequencies: 736.00 736.00 Next scan bandwidths: 64.00 64.00 12 00 00 J0806+4504 04 01 08 50.0 75.9 -4.1 -55.4 0 0 12 00 00 12 05 00 =0803+452 04 06 08 50.8 76.7 -4.0 -55.6 300 19 12 00 01 12 08 00 J0854+2006 04 09 09 26.8 91.9 -4.8 -39.6 85 19 12 08 00 12 15 00 =OJ287 04 16 10 27.8 93.4 -4.7 -39.6 420 46 12 08 01 12 20 00 J0854+2006 04 21 11 28.6 94.4 -4.6 -39.5 294 46 12 20 00 12 22 00 =OJ287 04 23 11 28.9 94.8 -4.5 -39.5 120 54 12 20 01 12 27 00 J0854+2006 04 28 12 29.6 95.9 -4.5 -39.4 294 54 12 27 00 12 37 00 =OJ287 04 38 14 31.1 98.0 -4.3 -39.2 600 93 12 27 01 12 42 00 J0854+2006 04 43 15 31.9 99.0 -4.2 -39.1 294 93 12 42 00 12 52 00 =OJ287 04 53 16 33.3 101.2 -4.0 -38.8 600 131 12 42 01 12 57 00 J0854+2006 04 58 17 34.1 102.3 -4.0 -38.6 294 131 12 57 00 13 07 00 =OJ287 05 08 19 35.5 104.6 -3.8 -38.1 600 170 12 57 01 13 09 00 J0854+2006 05 10 19 35.8 105.0 -3.8 -38.1 115 170 13 09 00 13 13 00 =OJ287 05 14 20 36.4 105.9 -3.7 -37.9 240 185 13 09 01 13 13 00 J0905+2052 05 14 20 35.5 103.0 -3.9 -38.7 -29 185 No stop 13 16 00 --- 05 17 20 35.9 103.7 -3.8 -38.5 151 197 13 13 01 13 18 00 J0854+2006 05 19 20 37.1 107.1 -3.6 -37.6 90 197 13 18 00 13 22 00 =OJ287 05 23 21 37.7 108.1 -3.5 -37.4 240 213 13 18 01 13 27 00 J0854+2006 05 28 22 38.4 109.2 -3.5 -37.1 294 213 13 27 00 13 37 00 =OJ287 05 38 24 39.8 111.7 -3.3 -36.4 600 251 13 27 01 13 39 00 J0854+2006 05 40 24 40.1 112.2 -3.3 -36.2 115 251 13 39 00 13 43 00 =OJ287 05 44 25 40.7 113.2 -3.2 -35.9 240 267 13 39 01 13 43 00 J0905+2052 05 44 25 39.8 110.0 -3.4 -37.1 -30 267 No stop 13 46 00 --- 05 47 25 40.2 110.7 -3.3 -36.9 150 278 13 43 01 13 48 00 J0854+2006 05 49 25 41.3 114.4 -3.1 -35.5 89 278 13 48 00 13 52 00 =OJ287 05 53 26 41.9 115.5 -3.0 -35.2 240 294 13 48 01 13 57 00 J0854+2006 05 58 27 42.6 116.8 -3.0 -34.7 294 294 13 57 00 14 07 00 =OJ287 06 08 28 43.9 119.4 -2.8 -33.8 600 332 13 57 01 Schedule for DARNHALL (Code Da ) 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 ---------------------------------------------------------------------------------------- --- Thu 25 May 2023 Day 145 --- 14 09 00 J0854+2006 06 10 29 44.1 120.0 -2.8 -33.6 114 332 14 09 00 14 13 00 =OJ287 06 14 29 44.7 121.1 -2.7 -33.1 240 348 14 09 01 14 13 00 J0905+2052 06 14 29 43.9 117.7 -2.9 -34.6 -31 348 No stop 14 16 00 --- 06 17 30 44.3 118.5 -2.8 -34.3 149 359 14 13 01 14 18 00 J0854+2006 06 19 30 45.3 122.5 -2.6 -32.6 88 359 14 18 00 14 22 00 =OJ287 06 23 31 45.8 123.6 -2.5 -32.1 240 375 14 18 01 14 27 00 J0854+2006 06 28 32 46.4 125.1 -2.5 -31.5 293 375 14 27 00 14 37 00 =OJ287 06 38 33 47.6 128.0 -2.3 -30.2 600 414 14 27 01 14 42 00 J0854+2006 06 43 34 48.2 129.6 -2.2 -29.5 293 414 14 42 00 14 52 00 =OJ287 06 53 36 49.4 132.7 -2.0 -28.0 600 452 14 42 01 14 54 00 J0905+2052 06 55 36 49.1 129.5 -2.2 -29.7 88 452 14 54 00 14 57 00 --- 06 58 37 49.4 130.4 -2.1 -29.2 180 464 14 54 01 14 57 00 J0854+2006 06 58 37 49.9 134.3 -2.0 -27.2 -34 464 No stop 15 00 00 =OJ287 07 01 37 50.2 135.3 -1.9 -26.7 146 475 14 57 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess223.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: 14 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: 12 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: 12 13 14 15 16 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) * J0905+2052 09 02 22.789418 * 09 05 14.337300 09 06 33.475548 0.00 21 04 13.50391 * 20 52 13.30700 20 46 44.53708 0.00 From catalog imbedded in main SCHED input file. 0803+452 08 03 02.295930 * 08 06 33.472537 08 08 10.411260 0.12 * J0806+4504 45 13 11.29504 * 45 04 32.27265 45 00 42.40919 0.10 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 151 observations. OJ287 08 51 57.250615 * 08 54 48.874927 08 56 07.986733 0.00 * J0854+2006 20 17 58.41740 * 20 06 30.64085 20 01 16.65897 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 J0905+2052 sess223.C4096 1 2 3 4 5 6 7 8 9 11 12 17 0.200 24.034 J0806+4504 sess223.C4096 1 2 3 4 5 6 7 8 9 11 12 0.083 10.000 J0854+2006 sess223.C4096 1 2 3 4 5 6 7 8 9 11 12 17 1.767 236.049 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) J0905+2052 68.9 J0806+4504 54.3 J0854+2006 66.7 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