COVER INFORMATION Station: IRBENE (Code Ir ) Experiment: Chasing the path of a precessing jet in a compact jetted radio galaxy Exp. Code: es110a Schedule Version: 3.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Carlo Stanghellini Address: INAF-IRA via Gobetti 101 40129 Bologna Italy Phone: +39 051 6399392 EMAIL: carlo.stanghellini@inaf.it Fax: Phone during observation: +39 3473819403 Observing mode: Continuum Notes: **** Phase-cal off please **** v3: Sr as DBBCVER=HYBRID/astro2 Schedule for IRBENE (Code Ir ) Page 2 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 ---------------------------------------------------------------------------------------- --- Sun 25 Feb 2024 Day 56 --- Next scan frequencies: 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 730.49 730.49 730.49 730.49 794.49 794.49 794.49 794.49 858.49 858.49 858.49 858.49 922.49 922.49 922.49 922.49 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 18 30 00 4C39.25 06 17 55 54.2-259.7 -3.2 -42.7 0 0 18 30 00 18 33 00 --- 06 20 55 54.6-258.9 -3.1 -42.6 180 46 18 30 01 18 43 12 J0942-0759 06 31 08 13.6-229.3 -3.2 -24.3 588 46 18 43 12 18 45 12 =0939-077 06 33 09 13.8-228.8 -3.2 -24.1 120 77 18 43 13 18 45 36 0941-080 06 33 33 13.4-228.9 -3.2 -24.1 21 77 18 45 36 18 55 36 --- 06 43 35 14.4-226.6 -3.0 -23.2 600 232 18 45 37 18 56 00 J0942-0759 06 43 59 14.9-226.3 -3.0 -23.1 21 232 18 56 00 18 58 00 =0939-077 06 45 59 15.1-225.8 -3.0 -22.9 120 263 18 56 01 18 58 24 0941-080 06 46 24 14.7-225.9 -3.0 -22.9 21 263 18 58 24 19 08 24 --- 06 56 25 15.7-223.5 -2.8 -21.9 600 417 18 58 25 19 08 49 J0942-0759 06 56 50 16.1-223.3 -2.8 -21.8 21 417 19 08 49 19 10 49 =0939-077 06 58 50 16.3-222.8 -2.7 -21.6 120 448 19 08 50 19 11 13 0941-080 06 59 15 15.9-222.9 -2.8 -21.6 21 448 19 11 13 19 21 13 --- 07 09 16 16.8-220.4 -2.6 -20.6 600 603 19 11 14 19 21 37 J0942-0759 07 09 41 17.3-220.2 -2.6 -20.5 21 603 19 21 37 19 23 37 =0939-077 07 11 41 17.4-219.7 -2.5 -20.2 120 634 19 21 38 19 24 02 0941-080 07 12 05 17.1-219.8 -2.5 -20.3 21 634 19 24 02 19 34 02 --- 07 22 07 17.9-217.3 -2.4 -19.2 600 788 19 24 03 19 34 28 J0942-0759 07 22 33 18.3-217.0 -2.4 -19.0 23 788 19 34 28 19 36 28 =0939-077 07 24 33 18.5-216.5 -2.3 -18.8 120 819 19 34 29 19 36 53 0941-080 07 24 59 18.1-216.6 -2.3 -18.9 22 819 19 36 53 19 46 53 --- 07 35 01 18.9-214.1 -2.2 -17.7 600 974 19 36 54 19 47 20 J0942-0759 07 35 27 19.3-213.8 -2.1 -17.6 23 974 19 47 20 19 49 20 =0939-077 07 37 27 19.5-213.3 -2.1 -17.3 120 1005 19 47 21 19 49 45 0941-080 07 37 53 19.1-213.4 -2.1 -17.4 22 1005 19 49 45 19 59 45 --- 07 47 55 19.8-210.9 -1.9 -16.2 600 1159 19 49 46 Schedule for IRBENE (Code Ir ) Page 3 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 ---------------------------------------------------------------------------------------- --- Sun 25 Feb 2024 Day 56 --- 20 00 11 J0942-0759 07 48 21 20.3-210.6 -1.9 -16.0 23 1159 20 00 11 20 02 11 =0939-077 07 50 21 20.4-210.1 -1.9 -15.7 120 1190 20 00 12 20 02 37 0941-080 07 50 47 20.0-210.2 -1.9 -15.8 22 1190 20 02 37 20 12 37 --- 08 00 48 20.7-207.6 -1.7 -14.6 600 1345 20 02 38 20 13 03 J0942-0759 08 01 14 21.1-207.3 -1.7 -14.4 23 1345 20 13 03 20 15 03 =0939-077 08 03 15 21.2-206.8 -1.7 -14.1 120 1376 20 13 04 20 15 28 0941-080 08 03 40 20.9-206.9 -1.7 -14.2 22 1376 20 15 28 20 25 28 --- 08 13 42 21.4-204.3 -1.5 -12.9 600 1530 20 15 29 20 30 53 4C39.25 08 19 08 68.2-218.7 -1.2 -25.6 299 1530 20 30 53 20 33 53 --- 08 22 08 68.5-217.3 -1.1 -24.7 180 1577 20 30 54 20 39 16 J1058+0133 08 27 32 26.3-223.4 -2.5 -21.7 299 1577 20 39 16 20 42 16 =1055+018 08 30 33 26.6-222.7 -2.5 -21.3 180 1623 20 39 17 20 44 03 J0942-0759 08 32 20 22.7-199.2 -1.2 -10.2 92 1623 20 44 03 20 46 03 =0939-077 08 34 20 22.8-198.6 -1.2 -10.0 120 1654 20 44 04 20 46 28 0941-080 08 34 45 22.5-198.8 -1.2 -10.1 22 1654 20 46 28 20 56 28 --- 08 44 47 22.9-196.1 -1.0 -8.7 600 1809 20 46 29 20 56 54 J0942-0759 08 45 13 23.3-195.7 -1.0 -8.5 23 1809 20 56 54 20 58 54 =0939-077 08 47 13 23.3-195.2 -0.9 -8.2 120 1840 20 56 55 20 59 20 0941-080 08 47 39 23.0-195.4 -1.0 -8.3 22 1840 20 59 20 21 09 20 --- 08 57 40 23.3-192.7 -0.8 -6.9 600 1994 20 59 21 21 09 45 J0942-0759 08 58 06 23.7-192.3 -0.8 -6.6 23 1994 21 09 45 21 11 45 =0939-077 09 00 07 23.7-191.8 -0.7 -6.3 120 2025 21 09 46 21 12 11 0941-080 09 00 32 23.4-191.9 -0.7 -6.4 22 2025 21 12 11 21 22 11 --- 09 10 34 23.6-189.3 -0.6 -5.0 600 2180 21 12 12 21 22 36 J0942-0759 09 10 59 24.0-188.8 -0.5 -4.8 22 2180 21 22 36 21 24 36 =0939-077 09 13 00 24.0-188.3 -0.5 -4.5 120 2211 21 22 37 21 25 02 0941-080 09 13 25 23.7-188.5 -0.5 -4.6 22 2211 21 25 02 21 35 02 --- 09 23 27 23.9-185.8 -0.4 -3.1 600 2365 21 25 03 21 35 27 J0942-0759 09 23 52 24.2-185.3 -0.3 -2.9 22 2365 21 35 27 21 37 27 =0939-077 09 25 53 24.2-184.8 -0.3 -2.6 120 2396 21 35 28 Schedule for IRBENE (Code Ir ) Page 4 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 ---------------------------------------------------------------------------------------- --- Sun 25 Feb 2024 Day 56 --- 21 37 52 0941-080 09 26 18 23.9-185.0 -0.3 -2.7 22 2396 21 37 52 21 47 52 --- 09 36 19 24.0-182.3 -0.1 -1.2 600 2551 21 37 53 21 48 18 J0942-0759 09 36 45 24.3-181.9 -0.1 -1.0 22 2551 21 48 18 21 50 18 =0939-077 09 38 45 24.3-181.3 -0.1 -0.7 120 2582 21 48 19 21 50 43 0941-080 09 39 10 24.0-181.5 -0.1 -0.8 22 2582 21 50 43 22 00 43 --- 09 49 12 24.0-178.8 0.1 0.6 600 2736 21 50 44 22 01 08 J0942-0759 09 49 37 24.3-178.4 0.1 0.9 22 2736 22 01 08 22 03 08 =0939-077 09 51 38 24.3-177.8 0.1 1.2 120 2767 22 01 09 22 03 33 0941-080 09 52 03 24.0-178.0 0.1 1.1 22 2767 22 03 33 22 13 33 --- 10 02 04 23.9-175.3 0.3 2.5 600 2922 22 03 34 22 13 58 J0942-0759 10 02 30 24.2-174.9 0.3 2.8 22 2922 22 13 58 22 15 58 =0939-077 10 04 30 24.2-174.3 0.3 3.1 120 2953 22 13 59 22 16 23 0941-080 10 04 55 23.9-174.6 0.3 2.9 22 2953 22 16 23 22 26 23 --- 10 14 57 23.7-171.9 0.5 4.4 600 3107 22 16 24 22 26 48 J0942-0759 10 15 22 24.0-171.4 0.5 4.7 22 3107 22 26 48 22 28 48 =0939-077 10 17 22 24.0-170.8 0.6 4.9 120 3138 22 26 49 22 30 38 J1058+0133 10 19 12 33.3-192.2 -0.7 -6.5 96 3138 22 30 38 22 33 38 =1055+018 10 22 13 33.4-191.3 -0.6 -6.0 180 3184 22 30 39 22 35 32 J0942-0759 10 24 07 23.8-169.0 0.7 5.9 100 3184 22 35 32 22 37 32 =0939-077 10 26 07 23.8-168.5 0.7 6.2 120 3215 22 35 33 22 37 56 0941-080 10 26 31 23.5-168.7 0.7 6.1 21 3215 22 37 56 22 47 56 --- 10 36 33 23.2-166.1 0.9 7.5 600 3370 22 37 57 22 48 20 J0942-0759 10 36 57 23.4-165.6 0.9 7.8 21 3370 22 48 20 22 50 20 =0939-077 10 38 58 23.4-165.0 0.9 8.0 120 3401 22 48 21 22 50 45 0941-080 10 39 22 23.1-165.3 0.9 7.9 21 3401 22 50 45 23 00 45 --- 10 49 24 22.7-162.7 1.1 9.3 600 3555 22 50 46 23 01 10 J0942-0759 10 49 49 23.0-162.2 1.1 9.6 22 3555 23 01 10 23 03 10 =0939-077 10 51 50 22.9-161.6 1.1 9.8 120 3586 23 01 11 23 03 35 0941-080 10 52 14 22.6-161.9 1.1 9.7 21 3586 23 03 35 23 13 35 --- 11 02 16 22.1-159.3 1.3 11.1 600 3741 23 03 36 Schedule for IRBENE (Code Ir ) Page 5 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 ---------------------------------------------------------------------------------------- --- Sun 25 Feb 2024 Day 56 --- 23 14 00 J0942-0759 11 02 42 22.4-158.8 1.3 11.3 23 3741 23 14 00 23 16 00 =0939-077 11 04 42 22.3-158.2 1.4 11.6 120 3772 23 14 01 23 16 25 0941-080 11 05 07 22.0-158.5 1.3 11.5 22 3772 23 16 25 23 26 25 --- 11 15 09 21.5-155.9 1.5 12.8 600 3926 23 16 26 23 26 51 J0942-0759 11 15 35 21.7-155.4 1.5 13.0 23 3926 23 26 51 23 28 51 =0939-077 11 17 35 21.6-154.9 1.6 13.3 120 3957 23 26 52 23 29 16 0941-080 11 18 00 21.3-155.2 1.6 13.2 22 3957 23 29 16 23 39 16 --- 11 28 01 20.7-152.6 1.7 14.5 600 4112 23 29 17 23 39 42 J0942-0759 11 28 28 20.9-152.1 1.7 14.7 23 4112 23 39 42 23 41 42 =0939-077 11 30 28 20.8-151.6 1.8 15.0 120 4143 23 39 43 23 42 07 0941-080 11 30 53 20.6-151.9 1.8 14.8 22 4143 23 42 07 23 52 07 --- 11 40 55 19.9-149.3 1.9 16.1 600 4297 23 42 08 23 52 33 J0942-0759 11 41 21 20.1-148.8 2.0 16.3 23 4297 23 52 33 23 54 33 =0939-077 11 43 21 19.9-148.3 2.0 16.6 120 4328 23 52 34 --- Start: Sun 25 Feb 2024 Day 56 -- Stop: Mon 26 Feb 2024 Day 57 --- 23 54 58 0941-080 11 43 46 19.7-148.6 2.0 16.4 22 4328 23 54 58 00 04 58 --- 11 53 48 19.0-146.1 2.1 17.6 600 4483 23 54 59 00 05 25 J0942-0759 11 54 14 19.2-145.6 2.2 17.9 23 4483 00 05 25 00 07 25 =0939-077 11 56 15 19.0-145.1 2.2 18.1 120 4514 00 05 26 00 07 50 0941-080 11 56 40 18.8-145.4 2.2 18.0 22 4514 00 07 50 00 17 50 --- 12 06 42 18.0-142.9 2.4 19.1 600 4668 00 07 51 00 18 16 J0942-0759 12 07 08 18.1-142.4 2.4 19.3 23 4668 00 18 16 00 20 16 =0939-077 12 09 09 18.0-141.9 2.4 19.6 120 4699 00 18 17 00 20 42 0941-080 12 09 34 17.7-142.2 2.4 19.4 22 4699 00 20 42 00 30 42 --- 12 19 36 16.9-139.7 2.6 20.5 600 4854 00 20 43 00 31 08 J0942-0759 12 20 02 17.0-139.2 2.6 20.7 23 4854 00 31 08 00 33 08 =0939-077 12 22 02 16.9-138.7 2.6 20.9 120 4885 00 31 09 00 33 33 0941-080 12 22 28 16.6-139.0 2.6 20.8 22 4885 00 33 33 00 43 33 --- 12 32 30 15.7-136.6 2.8 21.9 600 5039 00 33 34 Schedule for IRBENE (Code Ir ) Page 6 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 26 Feb 2024 Day 57 --- 00 44 00 J0942-0759 12 32 56 15.9-136.1 2.8 22.1 23 5039 00 44 00 00 46 00 =0939-077 12 34 56 15.7-135.6 2.9 22.3 120 5070 00 44 01 00 46 25 0941-080 12 35 22 15.5-136.0 2.8 22.2 22 5070 00 46 25 00 56 25 --- 12 45 24 14.5-133.6 3.0 23.1 600 5225 00 46 26 00 56 52 J0942-0759 12 45 50 14.6-133.1 3.0 23.3 23 5225 00 56 52 00 58 52 =0939-077 12 47 50 14.4-132.6 3.1 23.5 120 5256 00 56 53 00 59 17 0941-080 12 48 16 14.2-132.9 3.1 23.4 22 5256 00 59 17 01 09 17 --- 12 58 18 13.2-130.6 3.2 24.3 600 5410 00 59 18 01 09 44 J0942-0759 12 58 44 13.3-130.1 3.3 24.5 23 5410 01 09 44 01 11 44 =0939-077 13 00 45 13.1-129.6 3.3 24.7 120 5441 01 09 45 01 12 10 0941-080 13 01 10 12.9-129.9 3.3 24.6 22 5441 01 12 10 01 22 10 --- 13 11 12 11.9-127.6 3.4 25.4 600 5596 01 12 11 01 22 36 J0942-0759 13 11 38 12.0-127.1 3.5 25.6 23 5596 01 22 36 01 24 36 =0939-077 13 13 39 11.8-126.6 3.5 25.8 120 5627 01 22 37 01 25 02 0941-080 13 14 04 11.6-127.0 3.5 25.7 22 5627 01 25 02 01 35 02 --- 13 24 06 10.5-124.7 3.7 26.5 600 5781 01 25 03 01 35 28 J0942-0759 13 24 33 10.6-124.2 3.7 26.6 23 5781 01 35 28 01 37 28 =0939-077 13 26 33 10.4-123.7 3.7 26.8 120 5812 01 35 29 01 37 54 0941-080 13 26 59 10.2-124.0 3.7 26.7 22 5812 01 37 54 01 47 54 --- 13 37 00 9.0-121.8 3.9 27.4 600 5967 01 37 55 02 16 04 3C286 14 05 16 62.2-164.6 0.5 9.5 1660 5967 02 16 04 02 30 00 --- 14 19 14 61.6-158.3 0.8 13.3 836 6182 02 16 05 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess124.C2048 --- 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: 9 Station: IRBENE Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 Net SB= 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 Pol. = 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 BBC SB= 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 The following frequency sets based on these setups were used. Frequency Set: 11 Setup file default. Used with PCAL = off LO sum= 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 730.49 730.49 730.49 730.49 794.49 794.49 794.49 794.49 858.49 858.49 858.49 858.49 922.49 922.49 922.49 922.49 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 Matching frequency sets: 11 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 4C39.25 09 23 55.319216 * 09 27 03.013937 09 28 35.082750 0.31 J0927+3902 39 15 23.56644 * 39 02 20.85185 38 56 03.24895 0.16 0923+392 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0927+39 GSFC 2016a X/S astro solution, 250526 observations. 0939-077 09 39 52.981827 * 09 42 21.461395 09 43 34.130774 0.08 * J0942-0759 -07 46 09.50325 *-07 59 53.20399 -08 06 34.57729 0.18 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 150 observations. * 0941-080 09 41 08.642474 * 09 43 36.944446 09 44 49.528582 0.54 J0943-0819 -08 05 43.99166 *-08 19 30.81834 -08 26 13.71118 0.80 J0943-08 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 49 observations. 1055+018 10 55 55.313730 * 10 58 29.605208 10 59 45.121830 0.01 * J1058+0133 01 50 03.53722 * 01 33 58.82372 01 26 08.12607 0.01 J1058+01 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 8263 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 16.249192 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 22 51.20946 0.16 1328+307 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 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 4C39.25 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 0.100 13.600 J0942-0759 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 1.167 121.329 0941-080 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 5.500 567.829 J1058+0133 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 0.100 12.799 3C286 sess124.C2048 1 2 3 4 5 8 9 10 11 13 0.232 17.402 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) 4C39.25 146.7 J0942-0759 158.7 0941-080 158.7 J1058+0133 170.1 3C286 133.4 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