COVER INFORMATION Station: HART (Code Hh ) Experiment: Nature of methanol maser rings Exp. Code: EB052G Schedule Version: 2.00 Processed by SCHED version: 11.30 Version 11.3 update 1. April 14, 2014 PI: Anna Bartkiewicz Address: Torun Centre for Astronomy ul. Gagarina 11, Torun, PL-87100 Poland Phone: +48 56 6113040 EMAIL: annan@astro.uni.torun.pl Fax: +48 56 6113009 Phone during observation: +48 56 6113010 Observing mode: MKV, 128 Mbps Notes: Please, make sure the PHASE CAL is OFF. SPECTRAL LINE observations, a PHASE REF experiment 11min. gap for Effelsberg after the scan 83 (UT 06:26:45-06:37:45) Schedule for HART (Code Hh ) Page 2 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- Next scan frequencies: 6664.71 6664.71 6664.71 6664.71 6668.71 6668.71 6668.71 6668.71 6672.71 6672.71 6672.71 6672.71 6676.71 6676.71 6676.71 6676.71 Next BBC frequencies: 154.71 154.71 154.71 154.71 158.71 158.71 158.71 158.71 162.71 162.71 162.71 162.71 166.71 166.71 166.71 166.71 Next scan bandwidths: 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 01 45 00 3C345 15 16 59 21.3 17.7 -1.4 0.0 0 0 01 45 00 02 00 00 --- 15 32 02 22.3 14.8 -1.2 0.0 900 14 01 45 01 02 00 40 3C345 15 32 42 22.3 14.6 -1.2 0.0 19 14 02 00 40 02 15 40 --- 15 47 44 23.1 11.6 -0.9 0.0 900 29 02 00 41 02 16 20 3C345 15 48 24 23.1 11.5 -0.9 0.0 19 29 02 16 20 02 31 20 --- 16 03 27 23.7 8.4 -0.7 0.0 900 43 02 16 21 02 34 56 J1834-0301 16 07 04 47.8 63.4 -2.5 0.0 104 43 02 34 56 02 36 41 =1831-030 16 08 49 48.1 63.0 -2.4 0.0 105 45 02 34 57 02 36 41 G28.817 16 08 49 46.7 65.4 -2.6 0.0 -31 45 No stop 02 39 56 --- 16 12 04 47.4 64.7 -2.5 0.0 164 48 02 36 42 02 39 56 J1834-0301 16 12 04 48.8 62.3 -2.4 0.0 -31 48 No stop 02 41 41 =1831-030 16 13 50 49.1 61.9 -2.4 0.0 74 50 02 39 57 02 41 41 G30.400 16 13 50 46.0 64.1 -2.6 0.0 -34 50 No stop 02 44 56 --- 16 17 05 46.7 63.4 -2.5 0.0 161 53 02 41 42 02 44 56 J1834-0301 16 17 05 49.8 61.1 -2.3 0.0 -34 53 No stop 02 46 41 =1831-030 16 18 50 50.1 60.7 -2.3 0.0 71 55 02 44 57 02 47 21 G31.047 16 19 31 46.9 61.6 -2.5 0.0 7 55 02 47 21 02 50 36 --- 16 22 46 47.5 60.9 -2.4 0.0 195 58 02 47 22 02 51 16 J1834-0301 16 23 26 51.0 59.5 -2.2 0.0 7 58 02 51 16 02 53 01 =1831-030 16 25 11 51.3 59.1 -2.2 0.0 105 59 02 51 17 02 53 01 G28.817 16 25 11 50.0 61.7 -2.3 0.0 -31 59 No stop 02 56 16 --- 16 28 27 50.6 61.0 -2.2 0.0 164 62 02 53 02 02 56 16 J1834-0301 16 28 27 52.0 58.3 -2.1 0.0 -31 62 No stop 02 58 01 =1831-030 16 30 12 52.3 57.8 -2.1 0.0 74 64 02 56 17 02 58 01 G30.400 16 30 12 49.3 60.4 -2.3 0.0 -34 64 No stop 03 01 16 --- 16 33 28 49.9 59.7 -2.3 0.0 161 67 02 58 02 Schedule for HART (Code Hh ) Page 3 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 03 01 16 J1834-0301 16 33 28 52.9 56.9 -2.0 0.0 -34 67 No stop 03 03 01 =1831-030 16 35 13 53.3 56.5 -2.0 0.0 71 69 03 01 17 03 03 41 G31.047 16 35 53 50.0 57.7 -2.2 0.0 7 69 03 03 41 03 06 56 --- 16 39 09 50.7 56.9 -2.1 0.0 195 72 03 03 42 03 07 36 J1834-0301 16 39 49 54.1 55.2 -1.9 0.0 7 72 03 07 36 03 09 21 =1831-030 16 41 34 54.4 54.7 -1.9 0.0 105 74 03 07 37 03 09 21 G28.817 16 41 34 53.2 57.6 -2.0 0.0 -31 74 No stop 03 12 36 --- 16 44 50 53.8 56.7 -2.0 0.0 164 77 03 09 22 03 12 36 J1834-0301 16 44 50 55.0 53.7 -1.8 0.0 -31 77 No stop 03 14 21 =1831-030 16 46 35 55.3 53.2 -1.8 0.0 74 79 03 12 37 03 14 21 G30.400 16 46 35 52.4 56.3 -2.0 0.0 -34 79 No stop 03 17 36 --- 16 49 51 53.0 55.4 -2.0 0.0 161 82 03 14 22 03 17 36 J1834-0301 16 49 51 55.9 52.2 -1.8 0.0 -34 82 No stop 03 19 21 =1831-030 16 51 36 56.2 51.6 -1.7 0.0 71 83 03 17 37 03 20 01 G31.047 16 52 16 53.1 53.3 -1.9 0.0 7 83 03 20 01 03 23 16 --- 16 55 31 53.7 52.4 -1.9 0.0 195 87 03 20 02 03 23 56 J1834-0301 16 56 12 57.0 50.1 -1.6 0.0 7 87 03 23 56 03 25 41 =1831-030 16 57 57 57.3 49.5 -1.6 0.0 105 88 03 23 57 03 25 41 G28.817 16 57 57 56.2 52.8 -1.8 0.0 -31 88 No stop 03 28 56 --- 17 01 12 56.8 51.8 -1.7 0.0 164 91 03 25 42 03 28 56 J1834-0301 17 01 12 57.9 48.4 -1.6 0.0 -31 91 No stop 03 30 41 =1831-030 17 02 58 58.2 47.8 -1.5 0.0 74 93 03 28 57 03 30 41 G30.400 17 02 58 55.4 51.5 -1.8 0.0 -34 93 No stop 03 33 56 --- 17 06 13 56.0 50.5 -1.7 0.0 161 96 03 30 42 03 33 56 J1834-0301 17 06 13 58.7 46.6 -1.5 0.0 -34 96 No stop 03 35 41 =1831-030 17 07 58 59.0 46.0 -1.5 0.0 71 98 03 33 57 03 36 21 G31.047 17 08 39 55.9 48.3 -1.6 0.0 7 98 03 36 21 03 39 36 --- 17 11 54 56.5 47.2 -1.6 0.0 195 101 03 36 22 03 40 16 J1834-0301 17 12 34 59.7 44.3 -1.4 0.0 7 101 03 40 16 03 42 01 =1831-030 17 14 20 60.0 43.6 -1.3 0.0 105 103 03 40 17 Schedule for HART (Code Hh ) Page 4 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 03 42 01 G28.817 17 14 20 59.0 47.3 -1.5 0.0 -31 103 No stop 03 45 16 --- 17 17 35 59.6 46.1 -1.4 0.0 164 106 03 42 02 03 45 16 J1834-0301 17 17 35 60.5 42.3 -1.3 0.0 -31 106 No stop 03 47 01 =1831-030 17 19 20 60.8 41.6 -1.3 0.0 74 107 03 45 17 03 47 01 G30.400 17 19 20 58.2 46.0 -1.5 0.0 -34 107 No stop 03 50 16 --- 17 22 36 58.7 44.8 -1.4 0.0 161 111 03 47 02 03 50 16 J1834-0301 17 22 36 61.3 40.2 -1.2 0.0 -34 111 No stop 03 52 01 =1831-030 17 24 21 61.5 39.5 -1.2 0.0 71 112 03 50 17 03 52 41 G31.047 17 25 01 58.6 42.4 -1.4 0.0 7 112 03 52 41 03 55 56 --- 17 28 17 59.0 41.2 -1.3 0.0 195 115 03 52 42 03 56 36 J1834-0301 17 28 57 62.2 37.4 -1.1 0.0 7 115 03 56 36 03 58 21 =1831-030 17 30 42 62.4 36.7 -1.1 0.0 105 117 03 56 37 03 58 21 G28.817 17 30 42 61.6 40.9 -1.2 0.0 -31 117 No stop 04 01 36 --- 17 33 58 62.1 39.5 -1.2 0.0 164 120 03 58 22 04 01 36 J1834-0301 17 33 58 62.8 35.2 -1.0 0.0 -31 120 No stop 04 03 21 =1831-030 17 35 43 63.0 34.3 -1.0 0.0 74 122 04 01 37 04 03 21 G30.400 17 35 43 60.7 39.7 -1.2 0.0 -34 122 No stop 04 06 36 --- 17 38 59 61.1 38.3 -1.2 0.0 161 125 04 03 22 04 06 36 J1834-0301 17 38 59 63.5 32.8 -0.9 0.0 -34 125 No stop 04 08 21 =1831-030 17 40 44 63.7 31.9 -0.9 0.0 71 127 04 06 37 04 09 01 G31.047 17 41 24 60.9 35.8 -1.1 0.0 7 127 04 09 01 04 12 16 --- 17 44 40 61.3 34.3 -1.0 0.0 195 130 04 09 02 04 12 56 J1834-0301 17 45 20 64.2 29.6 -0.8 0.0 7 130 04 12 56 04 14 41 =1831-030 17 47 05 64.4 28.7 -0.8 0.0 105 131 04 12 57 04 14 41 G28.817 17 47 05 63.8 33.4 -0.9 0.0 -31 131 No stop 04 17 56 --- 17 50 20 64.2 31.8 -0.9 0.0 164 135 04 14 42 04 17 56 J1834-0301 17 50 20 64.7 27.0 -0.7 0.0 -31 135 No stop 04 19 41 =1831-030 17 52 06 64.9 26.0 -0.7 0.0 74 136 04 17 57 04 19 41 G30.400 17 52 06 62.8 32.3 -0.9 0.0 -34 136 No stop 04 22 56 --- 17 55 21 63.2 30.7 -0.9 0.0 161 139 04 19 42 Schedule for HART (Code Hh ) Page 5 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 04 22 56 J1834-0301 17 55 21 65.2 24.2 -0.7 0.0 -34 139 No stop 04 24 41 =1831-030 17 57 07 65.4 23.2 -0.6 0.0 71 141 04 22 57 04 25 21 G31.047 17 57 47 62.8 28.1 -0.8 0.0 7 141 04 25 21 04 28 36 --- 18 01 02 63.2 26.5 -0.8 0.0 195 144 04 25 22 04 29 16 J1834-0301 18 01 42 65.8 20.6 -0.6 0.0 7 144 04 29 16 04 31 01 =1831-030 18 03 28 65.9 19.6 -0.5 0.0 105 146 04 29 17 04 31 01 G28.817 18 03 28 65.6 24.8 -0.7 0.0 -31 146 No stop 04 34 16 --- 18 06 43 65.9 23.0 -0.6 0.0 164 149 04 31 02 04 34 16 J1834-0301 18 06 43 66.1 17.7 -0.5 0.0 -31 149 No stop 04 36 01 =1831-030 18 08 28 66.2 16.7 -0.4 0.0 74 151 04 34 17 04 36 01 G30.400 18 08 28 64.6 24.0 -0.7 0.0 -34 151 No stop 04 39 16 --- 18 11 44 64.9 22.2 -0.6 0.0 161 154 04 36 02 04 39 16 J1834-0301 18 11 44 66.4 14.7 -0.4 0.0 -34 154 No stop 04 41 01 =1831-030 18 13 29 66.5 13.6 -0.4 0.0 71 156 04 39 17 04 41 41 G31.047 18 14 09 64.3 19.5 -0.6 0.0 7 156 04 41 41 04 44 56 --- 18 17 25 64.6 17.7 -0.5 0.0 195 159 04 41 42 04 45 36 J1834-0301 18 18 05 66.8 10.8 -0.3 0.0 7 159 04 45 36 04 47 21 =1831-030 18 19 50 66.8 9.7 -0.3 0.0 105 160 04 45 37 04 47 21 G28.817 18 19 50 66.9 15.1 -0.4 0.0 -31 160 No stop 04 50 36 --- 18 23 06 67.1 13.1 -0.3 0.0 164 163 04 47 22 04 50 36 J1834-0301 18 23 06 66.9 7.6 -0.2 0.0 -31 163 No stop 04 52 21 =1831-030 18 24 51 67.0 6.5 -0.2 0.0 74 165 04 50 37 04 52 21 G30.400 18 24 51 65.8 14.6 -0.4 0.0 -34 165 No stop 04 55 36 --- 18 28 07 66.0 12.7 -0.3 0.0 161 168 04 52 22 04 55 36 J1834-0301 18 28 07 67.1 4.4 -0.1 0.0 -34 168 No stop 04 57 21 =1831-030 18 29 52 67.1 3.3 -0.1 0.0 71 170 04 55 37 04 58 01 G31.047 18 30 32 65.3 10.2 -0.3 0.0 7 170 04 58 01 05 01 16 --- 18 33 48 65.4 8.3 -0.2 0.0 195 173 04 58 02 05 01 56 J1834-0301 18 34 28 67.1 0.4 -0.0 0.0 7 173 05 01 56 05 03 41 =1831-030 18 36 13 67.1 359.2 0.0 0.0 105 175 05 01 57 Schedule for HART (Code Hh ) Page 6 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 05 03 41 G28.817 18 36 13 67.5 4.7 -0.1 0.0 -31 175 No stop 05 06 56 --- 18 39 28 67.6 2.6 -0.1 0.0 164 178 05 03 42 05 06 56 J1834-0301 18 39 28 67.1 357.1 0.1 0.0 -31 178 No stop 05 08 41 =1831-030 18 41 14 67.1 356.0 0.1 0.0 74 180 05 06 57 05 08 41 G30.400 18 41 14 66.4 4.6 -0.1 0.0 -34 180 No stop 05 11 56 --- 18 44 29 66.5 2.6 -0.1 0.0 161 183 05 08 42 05 11 56 J1834-0301 18 44 29 67.0 353.9 0.2 0.0 -34 183 No stop 05 13 41 =1831-030 18 46 15 67.0 352.8 0.2 0.0 71 184 05 11 57 05 14 21 G31.047 18 46 55 65.6 0.4 -0.0 0.0 7 184 05 14 21 05 17 36 --- 18 50 10 65.6 358.4 0.0 0.0 195 187 05 14 22 05 18 16 J1834-0301 18 50 50 66.8 349.9 0.3 0.0 7 187 05 18 16 05 20 01 =1831-030 18 52 36 66.7 348.8 0.3 0.0 105 189 05 18 17 05 20 01 G28.817 18 52 36 67.5 354.0 0.2 0.0 -31 189 No stop 05 23 16 --- 18 55 51 67.4 351.9 0.2 0.0 164 192 05 20 02 05 23 16 J1834-0301 18 55 51 66.6 346.8 0.3 0.0 -31 192 No stop 05 25 01 =1831-030 18 57 36 66.5 345.7 0.4 0.0 74 194 05 23 17 05 25 01 G30.400 18 57 36 66.4 354.4 0.1 0.0 -34 194 No stop 05 28 16 --- 19 00 52 66.3 352.4 0.2 0.0 161 197 05 25 02 05 28 16 J1834-0301 19 00 52 66.3 343.8 0.4 0.0 -34 197 No stop 05 30 01 =1831-030 19 02 37 66.2 342.7 0.5 0.0 71 199 05 28 17 05 30 41 G31.047 19 03 17 65.3 350.5 0.3 0.0 7 199 05 30 41 05 33 56 --- 19 06 33 65.2 348.6 0.3 0.0 195 202 05 30 42 05 34 36 J1834-0301 19 07 13 65.8 340.0 0.5 0.0 7 202 05 34 36 05 36 21 =1831-030 19 08 58 65.7 339.0 0.6 0.0 105 204 05 34 37 05 36 21 G28.817 19 08 58 66.8 343.7 0.4 0.0 -31 204 No stop 05 39 36 --- 19 12 14 66.5 341.7 0.5 0.0 164 207 05 36 22 05 39 36 J1834-0301 19 12 14 65.4 337.2 0.6 0.0 -31 207 No stop 05 41 21 =1831-030 19 13 59 65.3 336.2 0.6 0.0 74 208 05 39 37 05 41 21 G30.400 19 13 59 65.7 344.5 0.4 0.0 -34 208 No stop 05 44 36 --- 19 17 15 65.5 342.6 0.5 0.0 161 212 05 41 22 Schedule for HART (Code Hh ) Page 7 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 05 44 36 J1834-0301 19 17 15 65.0 334.4 0.7 0.0 -34 212 No stop 05 46 21 =1831-030 19 19 00 64.8 333.4 0.7 0.0 71 213 05 44 37 05 47 01 G31.047 19 19 40 64.4 341.1 0.5 0.0 7 213 05 47 01 05 50 16 --- 19 22 56 64.2 339.3 0.6 0.0 195 216 05 47 02 05 50 56 J1834-0301 19 23 36 64.3 331.0 0.8 0.0 7 216 05 50 56 05 52 41 =1831-030 19 25 21 64.1 330.1 0.8 0.0 105 218 05 50 57 05 52 41 G28.817 19 25 21 65.4 334.1 0.7 0.0 -31 218 No stop 05 55 56 --- 19 28 37 65.1 332.3 0.8 0.0 164 221 05 52 42 05 55 56 J1834-0301 19 28 37 63.8 328.5 0.9 0.0 -31 221 No stop 05 57 41 =1831-030 19 30 22 63.5 327.6 0.9 0.0 74 223 05 55 57 05 57 41 G30.400 19 30 22 64.4 335.2 0.7 0.0 -34 223 No stop 06 00 56 --- 19 33 37 64.1 333.5 0.7 0.0 161 226 05 57 42 06 00 56 J1834-0301 19 33 37 63.1 326.0 1.0 0.0 -34 226 No stop 06 02 41 =1831-030 19 35 23 62.9 325.2 1.0 0.0 71 228 06 00 57 06 03 21 G31.047 19 36 03 63.0 332.5 0.8 0.0 7 228 06 03 21 06 06 36 --- 19 39 18 62.6 330.9 0.9 0.0 195 231 06 03 22 06 06 36 J1834-0301 19 39 18 62.4 323.4 1.1 0.0 -33 231 No stop 06 08 21 =1831-030 19 41 04 62.2 322.6 1.1 0.0 72 232 06 06 37 06 11 45 3C345 19 44 28 12.0 326.1 3.0 0.0 91 232 06 11 45 06 26 45 --- 19 59 30 10.0 323.9 3.3 0.0 900 247 06 11 46 06 37 45 J1834-0301 20 10 32 57.6 311.0 1.6 0.0 547 247 06 37 45 06 39 30 =1831-030 20 12 18 57.3 310.4 1.6 0.0 105 249 06 37 46 06 39 30 G28.817 20 12 18 59.1 312.7 1.5 0.0 -31 249 No stop 06 42 45 --- 20 15 33 58.5 311.6 1.5 0.0 164 252 06 39 31 06 42 45 J1834-0301 20 15 33 56.7 309.3 1.7 0.0 -31 252 No stop 06 44 30 =1831-030 20 17 18 56.4 308.8 1.7 0.0 74 253 06 42 46 06 44 30 G30.400 20 17 18 58.3 314.2 1.5 0.0 -34 253 No stop 06 47 45 --- 20 20 34 57.7 313.1 1.5 0.0 161 256 06 44 31 06 47 45 J1834-0301 20 20 34 55.9 307.7 1.8 0.0 -34 256 No stop 06 49 30 =1831-030 20 22 19 55.6 307.2 1.8 0.0 71 258 06 47 46 Schedule for HART (Code Hh ) Page 8 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 06 50 10 G31.047 20 22 59 56.5 312.9 1.6 0.0 7 258 06 50 10 06 53 25 --- 20 26 15 56.0 311.8 1.6 0.0 195 261 06 50 11 06 54 05 J1834-0301 20 26 55 54.7 305.8 1.9 0.0 7 261 06 54 05 06 55 50 =1831-030 20 28 40 54.4 305.3 1.9 0.0 105 263 06 54 06 06 55 50 G28.817 20 28 40 56.2 307.2 1.8 0.0 -31 263 No stop 06 59 05 --- 20 31 56 55.7 306.2 1.8 0.0 164 266 06 55 51 06 59 05 J1834-0301 20 31 56 53.8 304.4 1.9 0.0 -31 266 No stop 07 00 50 =1831-030 20 33 41 53.5 303.9 2.0 0.0 74 268 06 59 06 07 00 50 G30.400 20 33 41 55.5 308.7 1.8 0.0 -34 268 No stop 07 04 05 --- 20 36 57 54.9 307.7 1.8 0.0 161 271 07 00 51 07 04 05 J1834-0301 20 36 57 52.9 303.0 2.0 0.0 -34 271 No stop 07 05 50 =1831-030 20 38 42 52.5 302.5 2.1 0.0 71 273 07 04 06 07 06 30 G31.047 20 39 22 53.7 307.7 1.9 0.0 7 273 07 06 30 07 09 45 --- 20 42 38 53.1 306.7 1.9 0.0 195 276 07 06 31 07 10 25 J1834-0301 20 43 18 51.7 301.3 2.1 0.0 7 276 07 10 25 07 12 10 =1831-030 20 45 03 51.3 300.8 2.2 0.0 105 277 07 10 26 07 12 10 G28.817 20 45 03 53.2 302.5 2.0 0.0 -31 277 No stop 07 15 25 --- 20 48 18 52.6 301.6 2.1 0.0 164 281 07 12 11 07 15 25 J1834-0301 20 48 18 50.7 300.0 2.2 0.0 -31 281 No stop 07 17 10 =1831-030 20 50 04 50.3 299.6 2.3 0.0 74 282 07 15 26 07 17 10 G30.400 20 50 04 52.5 303.9 2.0 0.0 -34 282 No stop 07 20 25 --- 20 53 19 51.9 303.0 2.1 0.0 161 285 07 17 11 07 20 25 J1834-0301 20 53 19 49.7 298.8 2.3 0.0 -34 285 No stop 07 22 10 =1831-030 20 55 05 49.4 298.4 2.3 0.0 71 287 07 20 26 07 22 50 G31.047 20 55 45 50.7 303.1 2.1 0.0 7 287 07 22 50 07 26 05 --- 20 59 00 50.1 302.3 2.2 0.0 195 290 07 22 51 07 26 45 J1834-0301 20 59 40 48.4 297.4 2.4 0.0 7 290 07 26 45 07 28 30 =1831-030 21 01 26 48.1 297.0 2.4 0.0 105 292 07 26 46 07 28 30 G28.817 21 01 26 50.0 298.3 2.3 0.0 -31 292 No stop 07 31 45 --- 21 04 41 49.4 297.6 2.4 0.0 164 295 07 28 31 Schedule for HART (Code Hh ) Page 9 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 07 31 45 J1834-0301 21 04 41 47.4 296.2 2.5 0.0 -31 295 No stop 07 33 30 =1831-030 21 06 26 47.1 295.9 2.5 0.0 74 297 07 31 46 07 33 30 G30.400 21 06 26 49.4 299.7 2.3 0.0 -34 297 No stop 07 36 45 --- 21 09 42 48.8 298.9 2.4 0.0 161 300 07 33 31 07 36 45 J1834-0301 21 09 42 46.4 295.2 2.6 0.0 -34 300 No stop 07 38 30 =1831-030 21 11 27 46.1 294.8 2.6 0.0 71 301 07 36 46 07 39 10 G31.047 21 12 07 47.5 299.2 2.4 0.0 7 301 07 39 10 07 42 25 --- 21 15 23 46.9 298.4 2.5 0.0 195 305 07 39 11 07 43 05 J1834-0301 21 16 03 45.1 293.9 2.7 0.0 7 305 07 43 05 07 44 50 =1831-030 21 17 48 44.8 293.5 2.7 0.0 105 306 07 43 06 07 44 50 G28.817 21 17 48 46.7 294.7 2.6 0.0 -31 306 No stop 07 48 05 --- 21 21 04 46.1 294.0 2.6 0.0 164 309 07 44 51 07 48 05 J1834-0301 21 21 04 44.1 292.9 2.8 0.0 -31 309 No stop 07 49 50 =1831-030 21 22 49 43.7 292.5 2.8 0.0 74 311 07 48 06 07 49 50 G30.400 21 22 49 46.1 296.0 2.6 0.0 -34 311 No stop 07 53 05 --- 21 26 05 45.5 295.3 2.6 0.0 161 314 07 49 51 07 53 05 J1834-0301 21 26 05 43.0 291.9 2.9 0.0 -34 314 No stop 07 54 50 =1831-030 21 27 50 42.7 291.6 2.9 0.0 71 316 07 53 06 07 55 30 G31.047 21 28 30 44.3 295.6 2.7 0.0 7 316 07 55 30 07 58 45 --- 21 31 46 43.6 295.0 2.7 0.0 195 319 07 55 31 07 59 25 J1834-0301 21 32 26 41.7 290.8 3.0 0.0 7 319 07 59 25 08 01 10 =1831-030 21 34 11 41.3 290.4 3.0 0.0 105 321 07 59 26 08 01 10 G28.817 21 34 11 43.4 291.4 2.8 0.0 -31 321 No stop 08 04 25 --- 21 37 27 42.7 290.8 2.9 0.0 164 324 08 01 11 08 04 25 J1834-0301 21 37 27 40.7 289.9 3.0 0.0 -31 324 No stop 08 06 10 =1831-030 21 39 12 40.3 289.6 3.1 0.0 74 325 08 04 26 08 06 10 G30.400 21 39 12 42.8 292.7 2.8 0.0 -34 325 No stop 08 09 25 --- 21 42 27 42.1 292.1 2.9 0.0 161 329 08 06 11 08 09 25 J1834-0301 21 42 27 39.6 289.0 3.1 0.0 -34 329 No stop 08 11 10 =1831-030 21 44 13 39.2 288.7 3.2 0.0 71 330 08 09 26 Schedule for HART (Code Hh ) Page 10 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 08 11 50 G31.047 21 44 53 40.9 292.4 3.0 0.0 7 330 08 11 50 08 15 05 --- 21 48 08 40.2 291.9 3.0 0.0 195 333 08 11 51 08 15 45 J1834-0301 21 48 48 38.2 287.9 3.2 0.0 7 333 08 15 45 08 17 30 =1831-030 21 50 34 37.9 287.7 3.3 0.0 105 335 08 15 46 08 17 30 G28.817 21 50 34 39.9 288.5 3.1 0.0 -31 335 No stop 08 20 45 --- 21 53 49 39.2 288.0 3.2 0.0 164 338 08 17 31 08 20 45 J1834-0301 21 53 49 37.2 287.1 3.3 0.0 -31 338 No stop 08 22 30 =1831-030 21 55 34 36.8 286.9 3.3 0.0 74 340 08 20 46 08 22 30 G30.400 21 55 34 39.4 289.8 3.1 0.0 -34 340 No stop 08 25 45 --- 21 58 50 38.7 289.2 3.2 0.0 161 343 08 22 31 08 25 45 J1834-0301 21 58 50 36.1 286.3 3.4 0.0 -34 343 No stop 08 27 30 =1831-030 22 00 35 35.7 286.1 3.4 0.0 71 345 08 25 46 08 28 10 G31.047 22 01 15 37.5 289.6 3.2 0.0 7 345 08 28 10 08 31 25 --- 22 04 31 36.8 289.0 3.3 0.0 195 348 08 28 11 08 32 05 J1834-0301 22 05 11 34.7 285.4 3.5 0.0 7 348 08 32 05 08 33 50 =1831-030 22 06 56 34.3 285.1 3.5 0.0 105 350 08 32 06 08 33 50 G28.817 22 06 56 36.4 285.9 3.4 0.0 -31 350 No stop 08 37 05 --- 22 10 12 35.7 285.4 3.4 0.0 164 353 08 33 51 08 37 05 J1834-0301 22 10 12 33.6 284.6 3.6 0.0 -31 353 No stop 08 38 50 =1831-030 22 11 57 33.2 284.4 3.6 0.0 74 354 08 37 06 08 38 50 G30.400 22 11 57 35.9 287.1 3.4 0.0 -34 354 No stop 08 42 05 --- 22 15 13 35.2 286.6 3.4 0.0 161 357 08 38 51 08 42 05 J1834-0301 22 15 13 32.5 283.9 3.7 0.0 -34 357 No stop 08 43 50 =1831-030 22 16 58 32.1 283.7 3.7 0.0 71 359 08 42 06 08 44 30 G31.047 22 17 38 34.0 287.0 3.5 0.0 7 359 08 44 30 08 47 45 --- 22 20 54 33.3 286.5 3.6 0.0 195 362 08 44 31 08 48 25 J1834-0301 22 21 34 31.1 283.0 3.8 0.0 7 362 08 48 25 08 50 10 =1831-030 22 23 19 30.7 282.8 3.8 0.0 105 364 08 48 26 08 50 10 G28.817 22 23 19 32.8 283.5 3.7 0.0 -31 364 No stop 08 53 25 --- 22 26 35 32.1 283.0 3.7 0.0 164 367 08 50 11 Schedule for HART (Code Hh ) Page 11 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 08 53 25 J1834-0301 22 26 35 30.0 282.3 3.9 0.0 -31 367 No stop 08 55 10 =1831-030 22 28 20 29.6 282.1 3.9 0.0 74 369 08 53 26 08 55 10 G30.400 22 28 20 32.3 284.6 3.7 0.0 -34 369 No stop 08 58 25 --- 22 31 35 31.6 284.2 3.7 0.0 161 372 08 55 11 08 58 25 J1834-0301 22 31 35 28.9 281.6 3.9 0.0 -34 372 No stop 09 00 10 =1831-030 22 33 21 28.5 281.4 4.0 0.0 71 374 08 58 26 09 00 50 G31.047 22 34 01 30.4 284.5 3.8 0.0 7 374 09 00 50 09 04 05 --- 22 37 16 29.7 284.1 3.8 0.0 195 377 09 00 51 09 04 45 J1834-0301 22 37 56 27.5 280.8 4.0 0.0 7 377 09 04 45 09 06 30 =1831-030 22 39 42 27.1 280.6 4.1 0.0 105 378 09 04 46 09 06 30 G28.817 22 39 42 29.2 281.2 3.9 0.0 -31 378 No stop 09 09 45 --- 22 42 57 28.5 280.8 4.0 0.0 164 381 09 06 31 09 09 45 J1834-0301 22 42 57 26.4 280.1 4.1 0.0 -31 381 No stop 09 11 30 =1831-030 22 44 43 26.0 279.9 4.2 0.0 74 383 09 09 46 09 11 30 G30.400 22 44 43 28.7 282.3 3.9 0.0 -34 383 No stop 09 14 45 --- 22 47 58 28.0 281.9 4.0 0.0 161 386 09 11 31 09 14 45 J1834-0301 22 47 58 25.3 279.5 4.2 0.0 -34 386 No stop 09 16 30 =1831-030 22 49 43 24.9 279.3 4.2 0.0 71 388 09 14 46 09 17 10 G31.047 22 50 23 26.8 282.3 4.0 0.0 7 388 09 17 10 09 20 25 --- 22 53 39 26.1 281.9 4.1 0.0 195 391 09 17 11 09 21 05 J1834-0301 22 54 19 23.9 278.7 4.3 0.0 7 391 09 21 05 09 22 50 =1831-030 22 56 04 23.5 278.5 4.4 0.0 105 393 09 21 06 09 22 50 G28.817 22 56 04 25.6 279.1 4.2 0.0 -31 393 No stop 09 26 05 --- 22 59 20 24.9 278.7 4.3 0.0 164 396 09 22 51 09 26 05 J1834-0301 22 59 20 22.8 278.1 4.4 0.0 -31 396 No stop 09 27 50 =1831-030 23 01 05 22.4 277.9 4.4 0.0 74 398 09 26 06 09 27 50 G30.400 23 01 05 25.1 280.2 4.2 0.0 -34 398 No stop 09 31 05 --- 23 04 21 24.4 279.8 4.3 0.0 161 401 09 27 51 09 31 05 J1834-0301 23 04 21 21.7 277.5 4.5 0.0 -34 401 No stop 09 32 50 =1831-030 23 06 06 21.3 277.3 4.5 0.0 71 402 09 31 06 Schedule for HART (Code Hh ) Page 12 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 09 33 30 G31.047 23 06 46 23.2 280.2 4.3 0.0 7 402 09 33 30 09 36 45 --- 23 10 02 22.5 279.8 4.4 0.0 195 406 09 33 31 09 37 25 J1834-0301 23 10 42 20.2 276.7 4.6 0.0 7 406 09 37 25 09 39 10 =1831-030 23 12 27 19.9 276.5 4.6 0.0 105 407 09 37 26 09 39 10 G28.817 23 12 27 21.9 277.1 4.5 0.0 -31 407 No stop 09 42 25 --- 23 15 43 21.2 276.7 4.5 0.0 164 410 09 39 11 09 42 25 J1834-0301 23 15 43 19.1 276.1 4.7 0.0 -31 410 No stop 09 44 10 =1831-030 23 17 28 18.7 275.9 4.7 0.0 74 412 09 42 26 09 44 10 G30.400 23 17 28 21.5 278.1 4.5 0.0 -34 412 No stop 09 47 25 --- 23 20 43 20.8 277.8 4.5 0.0 161 415 09 44 11 09 47 25 J1834-0301 23 20 43 18.0 275.5 4.8 0.0 -34 415 No stop 09 49 10 =1831-030 23 22 29 17.6 275.3 4.8 0.0 71 417 09 47 26 09 49 50 G31.047 23 23 09 19.6 278.2 4.6 0.0 7 417 09 49 50 09 53 05 --- 23 26 24 18.9 277.8 4.6 0.0 195 420 09 49 51 09 53 45 J1834-0301 23 27 04 16.6 274.8 4.9 0.0 7 420 09 53 45 09 55 30 =1831-030 23 28 50 16.2 274.6 4.9 0.0 105 422 09 53 46 09 55 30 G28.817 23 28 50 18.3 275.1 4.8 0.0 -31 422 No stop 09 58 45 --- 23 32 05 17.5 274.7 4.8 0.0 164 425 09 55 31 09 58 45 J1834-0301 23 32 05 15.5 274.2 5.0 0.0 -31 425 No stop 10 00 30 =1831-030 23 33 51 15.1 274.0 5.0 0.0 74 426 09 58 46 10 00 30 G30.400 23 33 51 17.8 276.2 4.8 0.0 -34 426 No stop 10 03 45 --- 23 37 06 17.1 275.8 4.8 0.0 161 430 10 00 31 10 03 45 J1834-0301 23 37 06 14.3 273.7 5.0 0.0 -34 430 No stop 10 05 30 =1831-030 23 38 51 13.9 273.5 5.1 0.0 71 431 10 03 46 10 06 10 G31.047 23 39 32 15.9 276.2 4.9 0.0 7 431 10 06 10 10 09 25 --- 23 42 47 15.2 275.8 4.9 0.0 195 434 10 06 11 10 10 05 J1834-0301 23 43 27 12.9 272.9 5.1 0.0 7 434 10 10 05 10 11 50 =1831-030 23 45 12 12.5 272.7 5.2 0.0 105 436 10 10 06 10 11 50 G28.817 23 45 12 14.6 273.3 5.0 0.0 -31 436 No stop 10 15 05 --- 23 48 28 13.9 272.9 5.1 0.0 164 439 10 11 51 Schedule for HART (Code Hh ) Page 13 Nature of methanol maser rings 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 ---------------------------------------------------------------------------------------- --- Wed 18 Mar 2015 Day 77 --- 10 15 05 J1834-0301 23 48 28 11.8 272.4 5.2 0.0 -31 439 No stop 10 16 50 =1831-030 23 50 13 11.4 272.2 5.3 0.0 74 441 10 15 06 10 16 50 G30.400 23 50 13 14.2 274.3 5.0 0.0 -34 441 No stop 10 20 05 --- 23 53 29 13.4 273.9 5.1 0.0 161 444 10 16 51 10 20 05 J1834-0301 23 53 29 10.7 271.8 5.3 0.0 -34 444 No stop 10 21 50 =1831-030 23 55 14 10.3 271.6 5.3 0.0 71 446 10 20 06 10 22 30 G31.047 23 55 54 12.3 274.3 5.1 0.0 7 446 10 22 30 10 25 45 --- 23 59 10 11.5 274.0 5.2 0.0 195 449 10 22 31 10 26 25 J1834-0301 23 59 50 9.2 271.1 5.4 0.0 7 449 10 26 25 10 28 10 =1831-030 00 01 35 8.8 270.9 5.4 0.0 105 450 10 26 26 10 28 10 G28.817 00 01 35 10.9 271.4 5.3 0.0 -31 450 No stop 10 31 25 --- 00 04 51 10.2 271.1 5.4 0.0 164 454 10 28 11 10 33 10 G30.400 00 06 36 10.5 272.5 5.3 0.0 77 454 10 33 10 10 36 25 --- 00 09 51 9.8 272.1 5.4 0.0 195 457 10 33 11 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess115M1.EB052 Matching groups in /usr/local/sched/catalogs/freq.dat: hh5cm Values confirmed by E-mail Jonathan Quick 20140219 (CR) ****** Only 16.00 of 32.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 5 Station: HART Total bit rate: 128 Format: MARK5B Bits per sample: 2 Sample rate: 4.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 6510.00 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: 8 Based on FREQ, BW, and/or DOPPLER in schedule. Used with PCAL = off **** Warning Only 16.00 MHz of 32.00 MHz in scheduled channels is within IFs. LO sum= 6664.71 6664.71 6664.71 6664.71 6668.71 6668.71 6668.71 6668.71 6672.71 6672.71 6672.71 6672.71 6676.71 6676.71 6676.71 6676.71 BBC fr= 154.71 154.71 154.71 154.71 158.71 158.71 158.71 158.71 162.71 162.71 162.71 162.71 166.71 166.71 166.71 166.71 Bandwd= 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 Matching frequency sets: 8 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * G28.817 18 39 59.517167 * 18 42 37.347900 18 43 25.228669 0.00 -03 32 40.59396 *-03 29 40.92100 -03 28 42.44905 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. * G30.400 18 45 15.750941 * 18 47 52.299700 18 48 39.761812 0.00 -02 26 38.30410 *-02 23 16.05300 -02 22 11.11406 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. * G31.047 18 44 08.303183 * 18 46 43.855000 18 47 31.021375 0.00 -01 34 11.55375 *-01 30 54.15500 -01 29 50.98164 0.00 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 80.00 80.00 80.00 80.00 80.00 80.00 80.00 80.00 80.00 80.00 80.00 80.00 80.00 80.00 J1642+3948 16 41 17.606228 * 16 42 58.809965 16 43 30.006999 0.77 * 3C345 39 54 10.81496 * 39 48 36.99402 39 46 46.40286 0.52 1641+399 /usr/local/sched/catalogs/sources.vlba J1642+39 GSFC 2011B astro solution 52621 Observations Doppler based on other sources. * J1834-0301 18 31 36.772712 * 18 34 14.074653 18 35 01.843575 0.12 1831-030 -03 03 43.12343 *-03 01 19.62724 -03 00 32.29644 0.16 /usr/local/sched/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 679 observations Doppler based on other sources. 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 G28.817 sess115M1.EB052 1 2 3 4 5 6 7 8 9 1.517 60.171 G30.400 sess115M1.EB052 1 2 3 4 5 6 7 8 9 1.517 58.687 G31.047 sess115M1.EB052 1 2 3 4 5 6 7 8 9 1.517 67.762 3C345 sess115M1.EB052 1 2 3 4 5 6 7 8 9 1.000 45.000 J1834-0301 sess115M1.EB052 1 2 3 4 5 6 7 8 9 2.508 93.618 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) G28.817 76.7 G30.400 75.4 G31.047 75.7 3C345 103.4 J1834-0301 78.8 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