COVER INFORMATION Station: IRBENE (Code Ir ) 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 IRBENE (Code Ir ) 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: 276.49 276.49 276.49 276.49 340.49 340.49 340.49 340.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 16 00 00 0716+714 09 38 23 70.5 -32.0 2.2 117.4 0 0 16 00 00 16 00 30 --- 09 38 54 70.5 -32.1 2.2 117.3 30 4 16 00 01 16 00 50 0716+714 09 39 14 70.5 -32.1 2.2 117.1 17 4 16 00 50 16 03 50 --- 09 42 14 70.3 -32.4 2.3 116.1 180 27 16 00 51 16 04 10 J0617+7816 09 42 34 63.6 -20.6 3.3 111.7 11 27 16 04 10 16 05 50 --- 09 44 14 63.6 -20.7 3.4 111.3 100 40 16 04 11 16 05 50 NGC2146 09 44 14 63.6 -20.5 3.4 111.6 -3 40 No stop 16 09 30 --- 09 47 55 63.4 -20.6 3.4 110.6 217 68 16 05 51 16 09 55 J0617+7816 09 48 20 63.4 -20.9 3.4 110.1 22 68 16 09 55 16 10 55 --- 09 49 20 63.3 -20.9 3.5 109.8 60 76 16 09 56 16 10 55 NGC2146 09 49 20 63.3 -20.7 3.4 110.2 -3 76 No stop 16 14 35 --- 09 53 01 63.2 -20.8 3.5 109.2 217 104 16 10 56 16 14 35 J0617+7816 09 53 01 63.1 -21.0 3.5 108.8 -3 104 No stop 16 15 45 --- 09 54 11 63.1 -21.1 3.5 108.5 67 113 16 14 36 16 15 45 NGC2146 09 54 11 63.1 -20.9 3.5 108.9 -3 113 No stop 16 19 25 --- 09 57 52 62.9 -21.0 3.6 107.8 217 142 16 15 46 16 19 50 J0617+7816 09 58 17 62.9 -21.2 3.6 107.4 22 142 16 19 50 16 20 50 --- 09 59 17 62.8 -21.3 3.6 107.1 60 149 16 19 51 16 20 50 NGC2146 09 59 17 62.9 -21.0 3.6 107.4 -3 149 No stop 16 24 30 --- 10 02 57 62.7 -21.2 3.7 106.4 217 178 16 20 51 16 24 30 J0617+7816 10 02 57 62.7 -21.4 3.7 106.1 -3 178 No stop 16 25 40 --- 10 04 08 62.6 -21.4 3.7 105.8 67 187 16 24 31 16 25 40 NGC2146 10 04 08 62.6 -21.2 3.7 106.1 -3 187 No stop 16 29 20 --- 10 07 48 62.4 -21.3 3.8 105.1 217 215 16 25 41 16 29 45 J0617+7816 10 08 13 62.4 -21.5 3.8 104.7 22 215 16 29 45 16 30 45 --- 10 09 14 62.4 -21.5 3.8 104.4 60 223 16 29 46 16 30 45 NGC2146 10 09 14 62.4 -21.3 3.8 104.7 -3 223 No stop 16 34 25 --- 10 12 54 62.2 -21.4 3.8 103.8 217 251 16 30 46 Schedule for IRBENE (Code Ir ) 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 34 25 J0617+7816 10 12 54 62.2 -21.6 3.9 103.4 -3 251 No stop 16 35 35 --- 10 14 04 62.1 -21.7 3.9 103.1 67 260 16 34 26 16 35 35 NGC2146 10 14 04 62.1 -21.5 3.9 103.4 -3 260 No stop 16 39 15 --- 10 17 45 62.0 -21.6 3.9 102.5 217 289 16 35 36 16 39 40 J0617+7816 10 18 10 61.9 -21.8 3.9 102.0 22 289 16 39 40 16 40 40 --- 10 19 10 61.9 -21.8 4.0 101.7 60 296 16 39 41 16 40 40 NGC2146 10 19 10 61.9 -21.6 3.9 102.1 -3 296 No stop 16 44 20 --- 10 22 51 61.7 -21.7 4.0 101.1 217 325 16 40 41 16 44 20 J0617+7816 10 22 51 61.7 -21.9 4.0 100.8 -3 325 No stop 16 45 30 --- 10 24 01 61.6 -21.9 4.0 100.5 67 334 16 44 21 16 45 30 NGC2146 10 24 01 61.6 -21.7 4.0 100.8 -3 334 No stop 16 49 10 --- 10 27 42 61.5 -21.8 4.1 99.8 217 362 16 45 31 16 49 35 J0617+7816 10 28 07 61.4 -22.0 4.1 99.4 22 362 16 49 35 16 50 35 --- 10 29 07 61.4 -22.0 4.1 99.1 60 370 16 49 36 16 50 35 NGC2146 10 29 07 61.4 -21.8 4.1 99.5 -3 370 No stop 16 54 15 --- 10 32 47 61.2 -21.9 4.2 98.5 217 398 16 50 36 16 54 15 J0617+7816 10 32 47 61.2 -22.0 4.2 98.2 -3 398 No stop 16 55 25 --- 10 33 58 61.1 -22.1 4.2 97.9 67 407 16 54 16 16 55 25 NGC2146 10 33 58 61.1 -21.9 4.2 98.2 -3 407 No stop 16 58 45 --- 10 37 18 61.0 -21.9 4.2 97.4 197 433 16 55 26 16 59 10 J0617+7816 10 37 43 60.9 -22.1 4.3 96.9 22 433 16 59 10 17 00 20 --- 10 38 53 60.9 -22.1 4.3 96.6 70 442 16 59 11 17 00 35 0716+714 10 39 08 65.9 -36.1 3.2 99.2 5 442 17 00 35 17 03 35 --- 10 42 09 65.7 -36.2 3.3 98.4 180 465 17 00 36 17 04 00 J0617+7816 10 42 34 60.7 -22.2 4.3 95.7 15 465 17 04 00 17 05 50 --- 10 44 24 60.6 -22.2 4.4 95.2 110 479 17 04 01 17 05 50 NGC2146 10 44 24 60.6 -22.0 4.4 95.6 -3 479 No stop 17 09 30 --- 10 48 05 60.4 -22.0 4.4 94.6 217 508 17 05 51 17 09 55 J0617+7816 10 48 30 60.4 -22.2 4.4 94.2 22 508 17 09 55 17 11 05 --- 10 49 40 60.3 -22.2 4.5 93.9 70 517 17 09 56 Schedule for IRBENE (Code Ir ) 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 11 05 NGC2146 10 49 40 60.4 -22.0 4.5 94.2 -3 517 No stop 17 14 45 --- 10 53 21 60.2 -22.1 4.5 93.3 217 545 17 11 06 17 14 45 J0617+7816 10 53 21 60.1 -22.3 4.5 93.0 -3 545 No stop 17 16 05 --- 10 54 41 60.1 -22.3 4.5 92.6 77 555 17 14 46 17 16 05 NGC2146 10 54 41 60.1 -22.1 4.5 93.0 -3 555 No stop 17 19 45 --- 10 58 22 59.9 -22.1 4.6 92.1 217 584 17 16 06 17 20 10 J0617+7816 10 58 47 59.9 -22.3 4.6 91.6 22 584 17 20 10 17 21 20 --- 10 59 57 59.8 -22.3 4.6 91.3 70 593 17 20 11 17 21 20 NGC2146 10 59 57 59.8 -22.1 4.6 91.7 -3 593 No stop 17 25 00 --- 11 03 37 59.7 -22.1 4.7 90.8 217 621 17 21 21 17 25 00 J0617+7816 11 03 37 59.6 -22.3 4.7 90.4 -3 621 No stop 17 26 20 --- 11 04 58 59.6 -22.3 4.7 90.1 77 631 17 25 01 17 26 20 NGC2146 11 04 58 59.6 -22.1 4.7 90.4 -3 631 No stop 17 30 00 --- 11 08 38 59.4 -22.1 4.8 89.5 217 660 17 26 21 17 30 25 J0617+7816 11 09 03 59.3 -22.3 4.8 89.1 22 660 17 30 25 17 31 35 --- 11 10 14 59.3 -22.3 4.8 88.8 70 669 17 30 26 17 31 35 NGC2146 11 10 14 59.3 -22.1 4.8 89.1 -3 669 No stop 17 35 15 --- 11 13 54 59.1 -22.1 4.9 88.2 217 697 17 31 36 17 35 15 J0617+7816 11 13 54 59.1 -22.3 4.9 87.9 -3 697 No stop 17 36 35 --- 11 15 14 59.0 -22.3 4.9 87.6 77 707 17 35 16 17 36 35 NGC2146 11 15 14 59.1 -22.1 4.9 87.9 -3 707 No stop 17 40 15 --- 11 18 55 58.9 -22.1 4.9 87.0 217 736 17 36 36 17 40 40 J0617+7816 11 19 20 58.8 -22.2 5.0 86.6 22 736 17 40 40 17 41 50 --- 11 20 30 58.8 -22.2 5.0 86.3 70 745 17 40 41 17 41 50 NGC2146 11 20 30 58.8 -22.1 5.0 86.7 -3 745 No stop 17 45 30 --- 11 24 11 58.6 -22.0 5.0 85.8 217 773 17 41 51 17 45 30 J0617+7816 11 24 11 58.6 -22.2 5.0 85.5 -3 773 No stop 17 46 50 --- 11 25 31 58.5 -22.2 5.1 85.1 77 783 17 45 31 17 46 50 NGC2146 11 25 31 58.6 -22.0 5.1 85.5 -3 783 No stop 17 50 30 --- 11 29 12 58.4 -22.0 5.1 84.6 217 812 17 46 51 Schedule for IRBENE (Code Ir ) Page 5 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 50 55 J0617+7816 11 29 37 58.3 -22.2 5.1 84.2 22 812 17 50 55 17 52 05 --- 11 30 47 58.2 -22.2 5.2 83.9 70 821 17 50 56 17 52 05 NGC2146 11 30 47 58.3 -22.0 5.1 84.2 -3 821 No stop 17 55 45 --- 11 34 27 58.1 -22.0 5.2 83.3 217 849 17 52 06 17 55 45 J0617+7816 11 34 27 58.1 -22.1 5.2 83.0 -3 849 No stop 17 57 05 --- 11 35 48 58.0 -22.1 5.2 82.7 77 859 17 55 46 17 57 05 NGC2146 11 35 48 58.0 -21.9 5.2 83.0 -3 859 No stop 18 00 45 --- 11 39 28 57.9 -21.9 5.3 82.2 217 888 17 57 06 18 01 10 J0617+7816 11 39 53 57.8 -22.0 5.3 81.8 22 888 18 01 10 18 02 20 --- 11 41 04 57.7 -22.0 5.3 81.5 70 897 18 01 11 18 02 20 NGC2146 11 41 04 57.8 -21.9 5.3 81.8 -3 897 No stop 18 06 00 --- 11 44 44 57.6 -21.8 5.4 80.9 217 925 18 02 21 18 06 00 J0617+7816 11 44 44 57.5 -22.0 5.4 80.6 -3 925 No stop 18 07 20 --- 11 46 04 57.5 -21.9 5.4 80.3 77 935 18 06 01 18 07 20 NGC2146 11 46 04 57.5 -21.8 5.4 80.6 -3 935 No stop 18 11 00 --- 11 49 45 57.3 -21.7 5.5 79.8 217 964 18 07 21 18 11 25 J0617+7816 11 50 10 57.3 -21.9 5.5 79.4 22 964 18 11 25 18 12 35 --- 11 51 20 57.2 -21.9 5.5 79.1 70 973 18 11 26 18 12 35 NGC2146 11 51 20 57.3 -21.7 5.5 79.4 -3 973 No stop 18 16 15 --- 11 55 01 57.1 -21.6 5.5 78.6 217 1001 18 12 36 18 16 15 J0617+7816 11 55 01 57.0 -21.8 5.6 78.3 -3 1001 No stop 18 17 35 --- 11 56 21 57.0 -21.8 5.6 78.0 77 1011 18 16 16 18 17 35 NGC2146 11 56 21 57.0 -21.6 5.6 78.3 -3 1011 No stop 18 21 15 --- 12 00 02 56.8 -21.6 5.6 77.4 217 1040 18 17 36 18 21 40 J0617+7816 12 00 27 56.8 -21.7 5.6 77.0 22 1040 18 21 40 18 22 50 --- 12 01 37 56.7 -21.7 5.7 76.8 70 1049 18 21 41 18 22 50 NGC2146 12 01 37 56.8 -21.5 5.7 77.1 -3 1049 No stop 18 26 45 --- 12 05 33 56.6 -21.4 5.7 76.2 232 1079 18 22 51 18 27 00 0716+714 12 05 48 59.0 -35.9 4.7 78.9 5 1079 18 27 00 18 30 00 --- 12 08 48 58.8 -35.8 4.7 78.3 180 1102 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: 8 Station: IRBENE 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= 1350.00 1350.00 1350.00 1350.00 1350.00 1350.00 1350.00 1350.00 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 = A2 C2 A2 C2 A2 C2 A2 C2 The following frequency sets based on these setups were used. Frequency Set: 8 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= 276.49 276.49 276.49 276.49 340.49 340.49 340.49 340.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 8 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