COVER INFORMATION Station: JODRELL1 (Code Jb ) Experiment: Dual Frequency Observation of NGC2146 Exp. Code: EC096A Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Xiaopeng Cheng Address: Radio Astronomy Division Korea Astronomy and Space Science Institute 776 Daedeokdae-ro, Yuseong-gu Daejeon 34055, KOREA Phone: +86-18317079386 EMAIL: xcheng@kasi.re.kr Fax: Phone during observation: +86-18317079386 Observing mode: Notes: 18cm-1Gbps-32MHz Drafted by Xiaopeng Cheng Schedule for JODRELL1 (Code Jb ) Page 2 Dual Frequency Observation of NGC2146 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 24 May 2024 Day 145 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 16 00 00 0716+714 08 01 44 71.5 -9.4 0.6 162.3 0 0 16 00 00 16 00 30 --- 08 02 14 71.5 -9.5 0.6 162.1 30 4 16 00 01 16 00 50 0716+714 08 02 34 71.5 -9.6 0.6 161.9 13 4 16 00 50 16 03 50 --- 08 05 35 71.4 -10.3 0.7 160.5 180 27 16 00 51 16 04 10 J0617+7816 08 05 55 63.3 -11.5 1.7 144.1 -52 27 16 04 10 16 05 50 --- 08 07 35 63.3 -11.6 1.8 143.6 48 40 16 04 11 16 05 50 NGC2146 08 07 35 63.2 -11.5 1.8 143.9 -11 40 No stop 16 09 30 --- 08 11 16 63.1 -11.8 1.8 142.7 209 68 16 05 51 16 10 55 NGC2146 08 12 41 63.1 -11.9 1.8 142.3 78 68 16 10 55 16 14 35 --- 08 16 22 63.0 -12.2 1.9 141.1 220 97 16 10 56 16 14 35 J0617+7816 08 16 22 63.0 -12.4 1.9 140.7 -11 97 No stop 16 15 45 --- 08 17 32 63.0 -12.5 1.9 140.4 59 106 16 14 36 16 15 45 NGC2146 08 17 32 62.9 -12.3 1.9 140.7 -11 106 No stop 16 19 25 --- 08 21 12 62.8 -12.7 2.0 139.5 209 134 16 15 46 16 20 50 NGC2146 08 22 38 62.8 -12.8 2.0 139.1 78 134 16 20 50 16 24 30 --- 08 26 18 62.7 -13.1 2.1 137.9 220 162 16 20 51 16 24 30 J0617+7816 08 26 18 62.7 -13.3 2.1 137.6 -11 162 No stop 16 25 40 --- 08 27 28 62.7 -13.4 2.1 137.2 59 171 16 24 31 16 25 40 NGC2146 08 27 28 62.6 -13.2 2.1 137.5 -11 171 No stop 16 29 20 --- 08 31 09 62.5 -13.5 2.1 136.4 209 200 16 25 41 16 30 45 NGC2146 08 32 34 62.4 -13.6 2.2 135.9 78 200 16 30 45 16 34 25 --- 08 36 15 62.3 -13.9 2.2 134.8 220 228 16 30 46 16 34 25 J0617+7816 08 36 15 62.3 -14.1 2.2 134.4 -11 228 No stop 16 35 35 --- 08 37 25 62.3 -14.1 2.3 134.1 59 237 16 34 26 16 35 35 NGC2146 08 37 25 62.3 -14.0 2.3 134.4 -11 237 No stop 16 39 15 --- 08 41 06 62.1 -14.2 2.3 133.2 209 265 16 35 36 16 40 40 NGC2146 08 42 31 62.1 -14.3 2.3 132.8 78 265 16 40 40 16 44 20 --- 08 46 12 61.9 -14.6 2.4 131.7 220 294 16 40 41 Schedule for JODRELL1 (Code Jb ) Page 3 Dual Frequency Observation of NGC2146 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 24 May 2024 Day 145 --- 16 44 20 J0617+7816 08 46 12 62.0 -14.8 2.4 131.3 -11 294 No stop 16 45 30 --- 08 47 22 61.9 -14.9 2.4 131.0 59 303 16 44 21 16 45 30 NGC2146 08 47 22 61.9 -14.7 2.4 131.3 -11 303 No stop 16 49 10 --- 08 51 02 61.8 -14.9 2.5 130.2 209 331 16 45 31 16 50 35 NGC2146 08 52 28 61.7 -15.0 2.5 129.8 78 331 16 50 35 16 54 15 --- 08 56 08 61.6 -15.3 2.6 128.6 220 359 16 50 36 16 55 25 NGC2146 08 57 18 61.5 -15.4 2.6 128.3 63 359 16 55 25 16 58 45 --- 09 00 39 61.4 -15.6 2.6 127.3 200 385 16 55 26 16 59 10 J0617+7816 09 01 04 61.4 -15.8 2.7 126.8 14 385 16 59 10 17 00 20 --- 09 02 14 61.3 -15.9 2.7 126.5 70 394 16 59 11 17 00 35 0716+714 09 02 29 69.0 -21.7 1.6 136.3 -54 394 17 00 35 17 03 35 --- 09 05 30 68.8 -22.2 1.7 135.1 126 417 17 00 36 17 04 00 J0617+7816 09 05 55 61.2 -16.1 2.7 125.4 -44 417 17 04 00 17 05 50 --- 09 07 45 61.1 -16.2 2.8 124.8 66 432 17 04 01 17 05 50 NGC2146 09 07 45 61.1 -16.0 2.8 125.1 -11 432 No stop 17 09 30 --- 09 11 26 60.9 -16.2 2.8 124.1 209 460 17 05 51 17 11 05 NGC2146 09 13 01 60.9 -16.3 2.8 123.6 88 460 17 11 05 17 14 45 --- 09 16 42 60.7 -16.5 2.9 122.5 220 488 17 11 06 17 14 45 J0617+7816 09 16 42 60.7 -16.7 2.9 122.2 -11 488 No stop 17 16 05 --- 09 18 02 60.7 -16.8 2.9 121.8 69 499 17 14 46 17 16 05 NGC2146 09 18 02 60.7 -16.6 2.9 122.1 -11 499 No stop 17 19 45 --- 09 21 42 60.5 -16.8 3.0 121.0 209 527 17 16 06 17 21 20 NGC2146 09 23 18 60.4 -16.9 3.0 120.6 88 527 17 21 20 17 25 00 --- 09 26 58 60.3 -17.1 3.1 119.5 220 555 17 21 21 17 25 00 J0617+7816 09 26 58 60.3 -17.3 3.1 119.2 -11 555 No stop 17 26 20 --- 09 28 18 60.2 -17.3 3.1 118.8 69 566 17 25 01 17 26 20 NGC2146 09 28 18 60.2 -17.1 3.1 119.1 -11 566 No stop 17 30 00 --- 09 31 59 60.0 -17.3 3.2 118.1 209 594 17 26 21 17 31 35 NGC2146 09 33 34 60.0 -17.4 3.2 117.6 88 594 17 31 35 17 35 15 --- 09 37 15 59.8 -17.6 3.2 116.6 220 622 17 31 36 Schedule for JODRELL1 (Code Jb ) Page 4 Dual Frequency Observation of NGC2146 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 24 May 2024 Day 145 --- 17 35 15 J0617+7816 09 37 15 59.8 -17.7 3.3 116.2 -11 622 No stop 17 36 35 --- 09 38 35 59.8 -17.8 3.3 115.9 69 633 17 35 16 17 36 35 NGC2146 09 38 35 59.7 -17.6 3.3 116.2 -11 633 No stop 17 40 15 --- 09 42 16 59.6 -17.8 3.3 115.2 209 661 17 36 36 17 41 50 NGC2146 09 43 51 59.5 -17.8 3.4 114.7 88 661 17 41 50 17 45 30 --- 09 47 32 59.3 -18.0 3.4 113.7 220 689 17 41 51 17 45 30 J0617+7816 09 47 32 59.3 -18.2 3.4 113.4 -11 689 No stop 17 46 50 --- 09 48 52 59.3 -18.2 3.5 113.0 69 699 17 45 31 17 46 50 NGC2146 09 48 52 59.3 -18.1 3.4 113.3 -11 699 No stop 17 50 30 --- 09 52 32 59.1 -18.2 3.5 112.3 209 728 17 46 51 17 52 05 NGC2146 09 54 08 59.0 -18.2 3.5 111.9 88 728 17 52 05 17 55 45 --- 09 57 48 58.9 -18.4 3.6 110.8 220 756 17 52 06 17 57 05 NGC2146 09 59 08 58.8 -18.4 3.6 110.5 73 756 17 57 05 18 00 45 --- 10 02 49 58.6 -18.5 3.7 109.5 220 785 17 57 06 18 02 20 NGC2146 10 04 24 58.5 -18.6 3.7 109.0 88 785 18 02 20 18 06 00 --- 10 08 05 58.4 -18.7 3.8 108.0 220 813 18 02 21 18 06 00 J0617+7816 10 08 05 58.4 -18.9 3.8 107.7 -11 813 No stop 18 07 20 --- 10 09 25 58.3 -18.9 3.8 107.4 69 823 18 06 01 18 07 20 NGC2146 10 09 25 58.3 -18.8 3.8 107.7 -11 823 No stop 18 11 00 --- 10 13 06 58.1 -18.9 3.8 106.7 209 851 18 07 21 18 12 35 NGC2146 10 14 41 58.1 -18.9 3.9 106.3 88 851 18 12 35 18 16 15 --- 10 18 22 57.9 -19.0 3.9 105.3 220 880 18 12 36 18 16 15 J0617+7816 10 18 22 57.9 -19.2 3.9 105.0 -11 880 No stop 18 17 35 --- 10 19 42 57.8 -19.2 4.0 104.6 69 890 18 16 16 18 17 35 NGC2146 10 19 42 57.8 -19.0 4.0 104.9 -11 890 No stop 18 21 15 --- 10 23 22 57.6 -19.1 4.0 104.0 209 918 18 17 36 18 21 40 J0617+7816 10 23 48 57.6 -19.3 4.0 103.5 14 918 18 21 40 18 22 50 --- 10 24 58 57.5 -19.3 4.1 103.2 70 927 18 21 41 18 27 00 0716+714 10 29 08 63.1 -30.7 3.1 107.5 190 927 18 27 00 18 30 00 --- 10 32 09 62.9 -30.9 3.1 106.6 180 951 18 27 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess224.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: 3 Station: JODRELL1 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= 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 Net SB= L L U U L L U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= U U L L U U L L IF = A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 1 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= 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 1 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) * NGC2146 06 10 40.107791 * 06 18 37.585516 06 22 23.706396 0.00 78 22 28.31056 * 78 21 24.26303 78 20 58.15033 0.00 From catalog imbedded in main SCHED input file. * J0617+7816 06 10 01.907777 * 06 17 56.932792 06 21 41.910059 0.00 78 17 08.57455 * 78 16 07.39406 78 15 42.67859 0.00 From catalog imbedded in main SCHED input file. * 0716+714 07 16 13.029730 * 07 21 53.448465 07 24 35.616999 0.01 J0721+7120 71 26 15.17409 * 71 20 36.36343 71 18 03.56928 0.00 J0721+71 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc2016 GSFC 2016a X/S astro solution, 79366 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 NGC2146 sess224.L1024 1 2 3 4 5 6 7 8 1.649 43.184 J0617+7816 sess224.L1024 1 2 3 4 5 6 7 8 0.569 12.413 0716+714 sess224.L1024 1 2 3 4 5 6 7 8 0.158 3.836 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) NGC2146 59.5 J0617+7816 59.4 0716+714 57.7 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