COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs Exp. Code: bn021ag Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Neil Nagar Address: Postbus 800 9700 AV Groningen The Netherlands Phone: 1 EMAIL: nagar@astro.rug.nl Fax: Phone during observation: 1 Observing mode: continuum Notes: Target coordinates from previous VLBA observations Fringe finders: J1642+3948, can also use J1751+0939 Phase-referencing used for all sources This subscript for NGC6500. Run up to 6 times Schedule for VLBA_NL (Code Nl ) Page 2 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- Next scan frequencies: 4971.49 4979.49 4987.49 4995.49 Next BBC frequencies: 871.49 879.49 887.49 895.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 09 45 39 J1751+0939 18 06 11 57.7 186.7 0.2 5.0 0 1 1 0 09 45 39 09 47 39 =1749+096 18 08 11 57.7 187.6 0.3 5.7 120 F 1 798 09 47 39 J1752+1734 18 08 11 65.6 188.8 0.3 6.9 -22 1 1 798 09 47 39 09 48 39 =1750+175 18 09 11 65.5 189.4 0.3 7.3 38 F 1 1197 09 48 39 NGC6500 18 09 11 66.4 187.7 0.2 6.1 -8 1 1 1197 09 48 39 09 50 38 --- 18 11 11 66.3 188.9 0.2 7.0 112 F 1 1995 09 50 38 J1751+0939 18 11 11 57.6 189.0 0.3 6.8 -24 1 1 1995 09 50 38 09 51 38 =1749+096 18 12 11 57.6 189.4 0.3 7.1 36 F 1 2393 09 51 38 J1752+1734 18 12 11 65.4 191.1 0.3 8.6 -22 1 1 2393 09 51 38 09 52 38 =1750+175 18 13 11 65.4 191.6 0.3 9.1 38 F 1 2792 09 52 38 NGC6500 18 13 11 66.3 190.1 0.3 7.9 -8 1 1 2792 09 52 38 09 54 38 --- 18 15 11 66.2 191.2 0.3 8.8 112 F 1 3590 09 54 38 J1751+0939 18 15 11 57.5 190.8 0.4 8.1 -24 1 1 3590 09 54 38 09 55 38 =1749+096 18 16 11 57.4 191.2 0.4 8.5 36 F 1 3989 09 55 38 J1752+1734 18 16 11 65.3 193.3 0.4 10.4 -22 1 1 3989 09 55 38 09 56 37 =1750+175 18 17 11 65.2 193.9 0.4 10.8 38 F 1 4388 09 56 37 NGC6500 18 17 11 66.1 192.4 0.3 9.7 -8 1 1 4388 09 56 37 09 58 37 --- 18 19 11 66.1 193.5 0.4 10.6 112 F 1 5186 09 58 37 J1751+0939 18 19 11 57.3 192.6 0.5 9.5 -23 1 1 5186 09 58 37 09 59 37 =1749+096 18 20 11 57.3 193.0 0.5 9.8 36 F 1 5585 09 59 37 J1752+1734 18 20 11 65.1 195.6 0.5 12.1 -22 1 1 5585 09 59 37 10 00 37 =1750+175 18 21 11 65.1 196.1 0.5 12.5 38 F 1 5984 10 00 37 NGC6500 18 21 11 66.0 194.7 0.4 11.5 -8 1 1 5984 10 00 37 10 02 36 --- 18 23 11 65.9 195.8 0.4 12.4 112 F 1 6781 10 02 36 J1751+0939 18 23 11 57.1 194.4 0.5 10.8 -23 1 1 6781 10 02 36 10 03 36 =1749+096 18 24 11 57.1 194.8 0.5 11.2 36 F 1 7180 Schedule for VLBA_NL (Code Nl ) Page 3 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 10 03 36 J1752+1734 18 24 11 64.9 197.8 0.5 13.8 -22 1 1 7180 10 03 36 10 04 36 =1750+175 18 25 11 64.8 198.3 0.5 14.2 38 F 1 7579 10 04 36 NGC6500 18 25 11 65.8 197.0 0.5 13.2 -8 1 1 7579 10 04 36 10 06 36 --- 18 27 11 65.6 198.1 0.5 14.1 112 F 1 8377 10 06 36 J1751+0939 18 27 11 56.9 196.2 0.6 12.2 -23 1 1 8377 10 06 36 10 07 36 =1749+096 18 28 11 56.9 196.6 0.6 12.5 36 F 1 8776 10 07 36 J1752+1734 18 28 11 64.6 199.9 0.6 15.5 -22 1 1 8776 10 07 36 10 08 35 =1750+175 18 29 11 64.6 200.5 0.6 15.9 38 F 1 9175 10 08 35 NGC6500 18 29 11 65.5 199.2 0.5 15.0 -8 1 1 9175 10 08 35 10 10 35 --- 18 31 11 65.4 200.3 0.6 15.8 112 F 1 9973 10 10 35 J1751+0939 18 31 11 56.7 197.9 0.7 13.5 -23 1 1 9973 10 10 35 10 11 35 =1749+096 18 32 11 56.7 198.3 0.7 13.8 36 F 1 10372 10 11 35 J1752+1734 18 32 11 64.4 202.1 0.7 17.1 -21 1 1 10372 10 11 35 10 12 35 =1750+175 18 33 11 64.3 202.6 0.7 17.5 38 F 1 10771 10 12 35 NGC6500 18 33 11 65.3 201.4 0.6 16.6 -8 1 1 10771 10 12 35 10 14 34 --- 18 35 11 65.1 202.5 0.6 17.5 112 F 1 11568 10 14 34 J1751+0939 18 35 11 56.5 199.6 0.7 14.7 -23 1 1 11568 10 14 34 10 15 34 =1749+096 18 36 11 56.4 200.1 0.7 15.1 37 F 1 11967 10 15 34 J1752+1734 18 36 11 64.1 204.1 0.7 18.7 -21 1 1 11967 10 15 34 10 16 34 =1750+175 18 37 11 64.0 204.7 0.7 19.0 38 F 1 12366 10 16 34 J1759+2343 18 37 11 70.3 206.6 0.6 21.4 -19 1 1 12366 10 16 34 10 17 34 =1756+237 18 38 11 70.2 207.2 0.6 21.9 41 F 1 12765 10 17 34 J1745+1814 18 38 11 64.0 209.2 0.9 22.5 -18 1 1 12765 10 17 34 10 18 34 =1743+182 18 39 11 63.9 209.7 0.9 22.9 41 F 1 13164 10 18 34 J1745+1720 18 39 11 63.0 209.1 0.9 22.3 -8 1 1 13164 10 18 34 10 19 34 =1743+173 18 40 11 62.9 209.5 0.9 22.7 52 F 1 13563 10 19 34 J1728+1215 18 40 11 56.6 213.2 1.2 24.7 -19 1 1 13563 10 19 34 10 20 33 =1725+123 18 41 11 56.5 213.6 1.2 25.0 41 F 1 13962 Schedule for VLBA_NL (Code Nl ) Page 4 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 10 22 34 J1751+0939 18 43 12 55.9 203.1 0.9 17.2 108 1 1 13962 10 22 34 10 23 34 =1749+096 18 44 12 55.9 203.5 0.9 17.5 60 F 1 14361 10 23 34 J1752+1734 18 44 12 63.4 208.2 0.9 21.7 -21 1 1 14361 10 23 34 10 24 34 =1750+175 18 45 12 63.3 208.7 0.9 22.1 39 F 1 14760 10 24 34 NGC6500 18 45 12 64.3 207.7 0.8 21.4 -8 1 1 14760 10 24 34 10 26 33 --- 18 47 12 64.2 208.7 0.9 22.2 112 F 1 15557 10 26 33 J1751+0939 18 47 12 55.6 204.7 0.9 18.5 -23 1 1 15557 10 26 33 10 27 33 =1749+096 18 48 12 55.6 205.1 0.9 18.8 37 F 1 15956 10 27 33 J1752+1734 18 48 12 63.1 210.2 0.9 23.1 -21 1 1 15956 10 27 33 10 28 33 =1750+175 18 49 12 63.0 210.6 0.9 23.5 39 F 1 16355 10 28 33 NGC6500 18 49 12 64.0 209.7 0.9 22.9 -8 1 1 16355 10 28 33 10 30 33 --- 18 51 12 63.8 210.7 0.9 23.7 112 F 1 17153 10 30 33 J1751+0939 18 51 12 55.3 206.4 1.0 19.6 -23 1 2 17153 10 30 33 10 31 33 =1749+096 18 52 12 55.2 206.8 1.0 19.9 37 R 1 16754 10 31 33 J1752+1734 18 52 12 62.7 212.1 1.0 24.5 -21 1 2 16754 10 31 33 10 32 32 =1750+175 18 53 12 62.6 212.5 1.0 24.9 39 R 1 16355 10 32 32 NGC6500 18 53 12 63.6 211.7 1.0 24.4 -8 1 2 16355 10 32 32 10 34 32 --- 18 55 12 63.4 212.7 1.0 25.1 112 R 1 15557 10 34 32 J1751+0939 18 55 12 55.0 208.0 1.1 20.8 -23 1 2 15557 10 34 32 10 35 32 =1749+096 18 56 12 54.9 208.4 1.1 21.1 37 R 1 15159 10 35 32 J1752+1734 18 56 12 62.3 213.9 1.1 25.9 -21 1 2 15159 10 35 32 10 36 32 =1750+175 18 57 12 62.2 214.4 1.1 26.2 39 R 1 14760 10 36 32 NGC6500 18 57 12 63.2 213.6 1.0 25.8 -8 1 2 14760 10 36 32 10 38 32 --- 18 59 12 63.0 214.6 1.1 26.5 112 R 1 13962 10 38 32 J1751+0939 18 59 12 54.6 209.6 1.1 21.9 -23 1 2 13962 10 38 32 10 39 31 =1749+096 19 00 12 54.5 210.0 1.1 22.2 37 R 1 13563 10 39 31 J1752+1734 19 00 12 61.8 215.8 1.1 27.2 -21 1 2 13563 10 39 31 10 40 31 =1750+175 19 01 12 61.7 216.2 1.1 27.5 39 R 1 13164 Schedule for VLBA_NL (Code Nl ) Page 5 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 10 40 31 NGC6500 19 01 12 62.8 215.5 1.1 27.1 -8 1 2 13164 10 40 31 10 42 31 --- 19 03 12 62.6 216.4 1.1 27.8 112 R 1 12366 10 42 31 J1751+0939 19 03 12 54.2 211.2 1.2 23.0 -23 1 2 12366 10 42 31 10 43 31 =1749+096 19 04 12 54.1 211.5 1.2 23.3 37 R 1 11967 10 43 31 J1752+1734 19 04 12 61.4 217.5 1.2 28.5 -21 1 2 11967 10 43 31 10 44 31 =1750+175 19 05 12 61.3 218.0 1.2 28.8 39 R 1 11568 10 44 31 J1759+2343 19 05 12 67.3 222.4 1.1 33.3 -18 1 2 11568 10 44 31 10 45 30 =1756+237 19 06 12 67.2 222.9 1.1 33.7 42 R 1 11169 10 45 30 J1745+1814 19 06 12 60.9 222.0 1.3 31.7 -19 1 2 11169 10 45 30 10 46 30 =1743+182 19 07 12 60.8 222.4 1.4 32.0 41 R 1 10771 10 46 30 J1745+1720 19 07 12 60.0 221.6 1.4 31.2 -8 1 2 10771 10 46 30 10 47 30 =1743+173 19 08 12 59.9 222.0 1.4 31.5 52 R 1 10372 10 47 30 J1728+1215 19 08 12 53.3 223.7 1.7 31.8 -19 1 2 10372 10 47 30 10 48 30 =1725+123 19 09 12 53.2 224.0 1.7 32.0 41 R 1 9973 10 50 31 J1642+3948 19 11 13 62.1 278.4 2.5 73.8 78 1 2 9973 10 50 31 10 53 30 =1641+399 19 14 13 61.6 278.8 2.5 73.6 180 R 1 8776 10 53 30 J1751+0939 19 14 13 53.1 215.3 1.4 25.9 -48 1 2 8776 10 53 30 10 56 00 =1749+096 19 16 43 52.8 216.2 1.4 26.6 101 R 1 7779 10 56 00 J1752+1734 19 16 43 59.9 222.8 1.4 32.1 -20 1 2 7779 10 56 00 10 56 59 =1750+175 19 17 43 59.8 223.2 1.4 32.4 40 R 1 7380 10 56 59 NGC6500 19 17 43 60.8 222.7 1.4 32.2 -8 1 2 7380 10 56 59 10 58 59 --- 19 19 43 60.6 223.5 1.4 32.8 112 R 1 6582 10 58 59 J1751+0939 19 19 43 52.5 217.3 1.5 27.3 -22 1 2 6582 10 58 59 10 59 59 =1749+096 19 20 43 52.4 217.7 1.5 27.6 38 R 1 6183 10 59 59 J1752+1734 19 20 43 59.4 224.4 1.5 33.2 -20 1 2 6183 10 59 59 11 00 59 =1750+175 19 21 43 59.3 224.8 1.5 33.4 40 R 1 5784 11 00 59 NGC6500 19 21 43 60.3 224.3 1.4 33.3 -8 1 2 5784 11 00 59 11 02 58 --- 19 23 43 60.1 225.1 1.5 33.8 112 R 1 4986 Schedule for VLBA_NL (Code Nl ) Page 6 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 11 02 58 J1751+0939 19 23 43 52.0 218.8 1.5 28.3 -22 1 2 4986 11 02 58 11 03 58 =1749+096 19 24 43 51.9 219.1 1.5 28.5 38 R 1 4587 11 03 58 J1752+1734 19 24 43 58.9 225.9 1.5 34.2 -20 1 2 4587 11 03 58 11 04 58 =1750+175 19 25 43 58.7 226.3 1.5 34.4 40 R 1 4189 11 04 58 NGC6500 19 25 43 59.8 225.9 1.5 34.4 -8 1 2 4189 11 04 58 11 06 58 --- 19 27 43 59.5 226.7 1.5 34.9 112 R 1 3391 11 06 58 J1751+0939 19 27 43 51.6 220.2 1.6 29.2 -22 1 2 3391 11 06 58 11 07 58 =1749+096 19 28 43 51.4 220.5 1.6 29.4 38 R 1 2992 11 07 58 J1752+1734 19 28 43 58.3 227.4 1.6 35.2 -20 1 2 2992 11 07 58 11 08 58 =1750+175 19 29 43 58.2 227.8 1.6 35.4 40 R 1 2593 11 08 58 NGC6500 19 29 43 59.2 227.4 1.6 35.4 -8 1 2 2593 11 08 58 11 10 57 --- 19 31 43 59.0 228.2 1.6 35.9 112 R 1 1795 11 10 57 J1751+0939 19 31 43 51.1 221.5 1.7 30.1 -22 1 2 1795 11 10 57 11 11 57 =1749+096 19 32 43 51.0 221.9 1.7 30.3 38 R 1 1396 11 11 57 J1752+1734 19 32 43 57.8 228.9 1.7 36.1 -20 1 2 1396 11 11 57 11 12 57 =1750+175 19 33 43 57.6 229.2 1.7 36.3 40 R 1 997 11 12 57 NGC6500 19 33 43 58.7 228.9 1.6 36.3 -8 1 2 997 11 12 57 11 14 57 --- 19 35 43 58.4 229.7 1.7 36.8 112 R 1 199 11 14 57 J1751+0939 19 35 43 50.6 222.9 1.7 31.0 -22 1 3 199 11 14 57 11 15 56 =1749+096 19 36 43 50.5 223.2 1.7 31.2 38 F 1 598 11 15 56 J1752+1734 19 36 43 57.2 230.3 1.7 37.0 -19 1 3 598 11 15 56 11 16 56 =1750+175 19 37 43 57.0 230.7 1.7 37.2 40 F 1 997 11 16 56 NGC6500 19 37 43 58.1 230.4 1.7 37.2 -8 1 3 997 11 16 56 11 18 56 --- 19 39 43 57.8 231.1 1.7 37.7 112 F 1 1795 11 18 56 J1751+0939 19 39 43 50.1 224.2 1.8 31.8 -22 1 3 1795 11 18 56 11 19 56 =1749+096 19 40 43 49.9 224.5 1.8 32.0 38 F 1 2194 11 19 56 J1752+1734 19 40 43 56.6 231.7 1.8 37.9 -19 1 3 2194 11 19 56 11 20 56 =1750+175 19 41 43 56.5 232.0 1.8 38.1 40 F 1 2593 Schedule for VLBA_NL (Code Nl ) Page 7 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 11 20 56 NGC6500 19 41 43 57.5 231.8 1.8 38.1 -8 1 3 2593 11 20 56 11 22 55 --- 19 43 43 57.2 232.5 1.8 38.6 112 F 1 3391 11 22 55 J1751+0939 19 43 43 49.5 225.5 1.9 32.6 -21 1 3 3391 11 22 55 11 23 55 =1749+096 19 44 43 49.4 225.8 1.9 32.8 38 F 1 3790 11 23 55 J1752+1734 19 44 43 56.0 233.0 1.9 38.7 -19 1 3 3790 11 23 55 11 24 55 =1750+175 19 45 43 55.9 233.4 1.9 38.9 41 F 1 4189 11 24 55 J1759+2343 19 45 43 61.4 239.2 1.8 44.4 -17 1 3 4189 11 24 55 11 25 55 =1756+237 19 46 43 61.3 239.5 1.8 44.6 43 F 1 4587 11 25 55 J1745+1814 19 46 43 55.2 236.7 2.0 41.0 -18 1 3 4587 11 25 55 11 26 55 =1743+182 19 47 43 55.0 237.0 2.0 41.2 42 F 1 4986 11 26 55 J1745+1720 19 47 43 54.3 236.1 2.0 40.4 -7 1 3 4986 11 26 55 11 27 54 =1743+173 19 48 43 54.1 236.4 2.0 40.6 52 F 1 5385 11 27 54 J1728+1215 19 48 43 47.5 236.3 2.3 39.4 -19 1 3 5385 11 27 54 11 28 54 =1725+123 19 49 43 47.4 236.6 2.4 39.6 41 F 1 5784 11 28 54 J1751+0939 19 49 43 48.7 227.4 2.0 33.8 -12 1 3 5784 11 28 54 11 29 54 =1749+096 19 50 43 48.6 227.7 2.0 34.0 48 F 1 6183 11 29 54 J1752+1734 19 50 43 55.1 235.0 2.0 39.9 -19 1 3 6183 11 29 54 11 30 54 =1750+175 19 51 43 55.0 235.3 2.0 40.0 41 F 1 6582 11 30 54 NGC6500 19 51 43 56.0 235.2 1.9 40.2 -8 1 3 6582 11 30 54 11 32 54 --- 19 53 43 55.7 235.8 2.0 40.5 112 F 1 7380 11 32 54 J1751+0939 19 53 43 48.2 228.6 2.0 34.6 -21 1 3 7380 11 32 54 11 33 53 =1749+096 19 54 43 48.0 228.9 2.0 34.8 39 F 1 7779 11 33 53 J1752+1734 19 54 43 54.5 236.3 2.0 40.6 -19 1 3 7779 11 33 53 11 34 53 =1750+175 19 55 43 54.3 236.6 2.0 40.8 41 F 1 8178 11 34 53 NGC6500 19 55 43 55.4 236.4 2.0 40.9 -8 1 3 8178 11 34 53 11 36 53 --- 19 57 43 55.1 237.1 2.0 41.3 112 F 1 8975 11 36 53 J1751+0939 19 57 43 47.6 229.8 2.1 35.3 -21 1 3 8975 11 36 53 11 37 53 =1749+096 19 58 43 47.5 230.1 2.1 35.5 39 F 1 9374 Schedule for VLBA_NL (Code Nl ) Page 8 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 11 37 53 J1752+1734 19 58 43 53.9 237.5 2.1 41.3 -19 1 3 9374 11 37 53 11 38 53 =1750+175 19 59 43 53.7 237.8 2.1 41.5 41 F 1 9773 11 38 53 NGC6500 19 59 43 54.8 237.7 2.1 41.6 -8 1 3 9773 11 38 53 11 40 52 --- 20 01 43 54.5 238.3 2.1 41.9 112 F 1 10571 11 40 52 J1751+0939 20 01 43 47.0 231.0 2.2 36.0 -21 1 3 10571 11 40 52 11 41 52 =1749+096 20 02 43 46.9 231.3 2.2 36.2 39 F 1 10970 11 41 52 J1752+1734 20 02 43 53.2 238.7 2.2 41.9 -19 1 3 10970 11 41 52 11 42 52 =1750+175 20 03 43 53.1 239.0 2.2 42.1 41 F 1 11369 11 42 52 NGC6500 20 03 43 54.2 238.9 2.1 42.3 -8 1 3 11369 11 42 52 11 44 52 --- 20 05 43 53.8 239.5 2.2 42.6 112 F 1 12167 11 44 52 J1751+0939 20 05 43 46.5 232.1 2.2 36.7 -21 1 3 12167 11 44 52 11 45 51 =1749+096 20 06 43 46.3 232.4 2.2 36.8 39 F 1 12566 11 45 51 J1752+1734 20 06 43 52.6 239.9 2.2 42.6 -19 1 3 12566 11 45 51 11 46 51 =1750+175 20 07 43 52.4 240.2 2.2 42.7 41 F 1 12964 11 46 51 NGC6500 20 07 43 53.5 240.1 2.2 42.9 -8 1 3 12964 11 46 51 11 48 51 --- 20 09 43 53.2 240.7 2.2 43.2 112 F 1 13762 11 48 51 J1751+0939 20 09 43 45.9 233.3 2.3 37.3 -21 1 3 13762 11 48 51 11 49 51 =1749+096 20 10 43 45.7 233.6 2.3 37.5 39 F 1 14161 11 49 51 J1752+1734 20 10 43 51.9 241.0 2.3 43.2 -18 1 3 14161 11 49 51 11 50 51 =1750+175 20 11 43 51.8 241.3 2.3 43.3 41 F 1 14560 11 50 51 J1759+2343 20 11 43 57.1 247.2 2.2 48.7 -17 1 3 14560 11 50 51 11 51 50 =1756+237 20 12 43 56.9 247.4 2.2 48.8 43 F 1 14959 11 51 50 J1745+1814 20 12 43 51.0 244.2 2.4 45.0 -18 1 3 14959 11 51 50 11 52 50 =1743+182 20 13 43 50.8 244.5 2.5 45.1 42 F 1 15358 11 52 50 J1745+1720 20 13 43 50.1 243.5 2.5 44.4 -7 1 3 15358 11 52 50 11 53 50 =1743+173 20 14 43 49.9 243.8 2.5 44.5 52 F 1 15757 11 53 50 J1728+1215 20 14 43 43.3 243.1 2.8 42.9 -19 1 3 15757 11 53 50 11 54 50 =1725+123 20 15 43 43.2 243.4 2.8 43.0 41 F 1 16156 Schedule for VLBA_NL (Code Nl ) Page 9 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 11 54 50 J1751+0939 20 15 43 45.0 234.9 2.4 38.3 -12 1 3 16156 11 54 50 11 55 50 =1749+096 20 16 43 44.8 235.2 2.4 38.4 48 F 1 16555 11 55 50 J1752+1734 20 16 43 51.0 242.7 2.4 44.0 -18 1 3 16555 11 55 50 11 56 50 =1750+175 20 17 43 50.8 242.9 2.4 44.2 42 F 1 16954 11 56 50 NGC6500 20 17 43 51.9 242.9 2.4 44.4 -8 1 4 16954 11 56 50 11 58 49 --- 20 19 43 51.5 243.5 2.4 44.7 112 R 1 17449 11 58 49 J1751+0939 20 19 43 44.3 236.0 2.5 38.9 -20 1 4 17449 11 58 49 11 59 49 =1749+096 20 20 43 44.2 236.3 2.5 39.0 39 R 1 17050 11 59 49 J1752+1734 20 20 43 50.3 243.8 2.5 44.6 -18 1 4 17050 11 59 49 12 00 49 =1750+175 20 21 43 50.1 244.0 2.5 44.7 42 R 1 16651 12 00 49 NGC6500 20 21 43 51.2 244.0 2.4 44.9 -8 1 4 16651 12 00 49 12 02 49 --- 20 23 43 50.9 244.5 2.5 45.2 112 R 1 15853 12 02 49 J1751+0939 20 23 43 43.7 237.1 2.5 39.4 -20 1 4 15853 12 02 49 12 03 49 =1749+096 20 24 43 43.6 237.4 2.5 39.6 40 R 1 15454 12 03 49 J1752+1734 20 24 43 49.6 244.8 2.5 45.1 -18 1 4 15454 12 03 49 12 04 48 =1750+175 20 25 43 49.5 245.1 2.5 45.2 42 R 1 15055 12 04 48 NGC6500 20 25 43 50.5 245.1 2.5 45.4 -8 1 4 15055 12 04 48 12 06 48 --- 20 27 43 50.2 245.6 2.5 45.7 112 R 1 14257 12 06 48 J1751+0939 20 27 43 43.1 238.1 2.6 40.0 -20 1 4 14257 12 06 48 12 07 48 =1749+096 20 28 43 42.9 238.4 2.6 40.1 40 R 1 13858 12 07 48 J1752+1734 20 28 43 48.9 245.8 2.6 45.5 -18 1 4 13858 12 07 48 12 08 48 =1750+175 20 29 43 48.8 246.1 2.6 45.7 42 R 1 13460 12 08 48 NGC6500 20 29 43 49.9 246.1 2.6 45.9 -8 1 4 13460 12 08 48 12 10 47 --- 20 31 43 49.5 246.6 2.6 46.1 112 R 1 12662 12 10 47 J1751+0939 20 31 43 42.4 239.2 2.7 40.5 -20 1 4 12662 12 10 47 12 11 47 =1749+096 20 32 43 42.3 239.4 2.7 40.6 40 R 1 12263 12 11 47 J1752+1734 20 32 43 48.3 246.8 2.7 46.0 -18 1 4 12263 12 11 47 12 12 47 =1750+175 20 33 43 48.1 247.1 2.7 46.1 42 R 1 11864 Schedule for VLBA_NL (Code Nl ) Page 10 BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Wed 28 Apr 2004 Day 119 --- 12 12 47 NGC6500 20 33 43 49.2 247.1 2.6 46.4 -8 1 4 11864 12 12 47 12 14 47 --- 20 35 43 48.8 247.6 2.7 46.6 112 R 1 11066 12 14 47 J1751+0939 20 35 43 41.8 240.2 2.7 41.0 -20 1 4 11066 12 14 47 12 15 47 =1749+096 20 36 43 41.6 240.4 2.7 41.1 40 R 1 10667 12 15 47 J1752+1734 20 36 43 47.6 247.8 2.7 46.4 -18 1 4 10667 12 15 47 12 16 46 =1750+175 20 37 43 47.4 248.1 2.7 46.5 42 R 1 10268 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/filehost/cwalker/sched/setups/v6cm-128-4-2-L.set Matches group v6cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 2.00 Tape speeds: Low density - 133.330 ips, High density - 80.00 ips Time per pass for 17600 ft, High density tapes is: 00:44:00 1st LO= 4100.00 4100.00 4100.00 4100.00 Net SB= U U U U Pol. = LCP LCP LCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = C C C C VLBA FE= 6cm omit 6cm omit VLBA Synth= 15.4 4.1 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 4971.49 4979.49 4987.49 4995.49 BBC fr= 871.49 879.49 887.49 895.49 Bandwd= 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S1 S3 S1 S2 S3 S4 PCALXB2= S2 S4 S2 S4 M1 M2 M3 M4 PCALFR1= 510 510 6510 6510 0 0 0 0 PCALFR2= 510 510 6510 6510 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_auto SOURCE LIST -- BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs Catalog positions marked with *. Precession of date coordinates is based on stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900 No adjustments are made for rates (DRA, DDEC). Source Source position (RA/Dec) (B1950) (J2000) (Date) * NGC6500 17 53 48.136637 * 17 55 59.782400 17 56 11.416420 18 20 39.91157 * 18 20 17.66100 18 19 58.58763 From catalog imbedded in main SCHED input file. * J1642+3948 16 41 17.606214 * 16 42 58.809952 16 43 08.636100 1641+399 39 54 10.81489 * 39 48 36.99395 39 47 52.17574 3C345 /home/filehost/cwalker/sched/catalogs/sources.vlba J1642+39 ICRF - Ext.1 Source - 1998 IERS Annual Report * J1728+1215 17 25 47.656534 * 17 28 07.051218 17 28 19.419207 1725+123 12 18 03.42295 * 12 15 39.48600 12 15 12.22576 J1728+12 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 * J1745+1720 17 43 22.235912 * 17 45 35.208179 17 45 46.997598 1743+173 17 21 09.18610 * 17 20 01.42341 17 19 39.03505 J1745+17 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report * J1745+1814 17 43 44.129548 * 17 45 55.927483 17 46 07.624568 1743+182 18 15 56.63458 * 18 14 50.42224 18 14 27.96859 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 * J1751+0939 17 49 10.387930 * 17 51 32.818573 17 51 45.319524 1749+096 09 39 42.82596 * 09 39 00.72851 09 38 42.02324 J1751+09 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report * J1752+1734 17 50 33.364393 * 17 52 46.002907 17 52 57.730480 1750+175 17 34 56.75234 * 17 34 20.35028 17 34 00.34026 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 * J1759+2343 17 56 55.937407 * 17 59 00.358091 17 59 11.419074 1756+237 23 43 55.77912 * 23 43 46.95379 23 43 27.82228 J1759+23 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 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) NGC6500 118.5 J1642+3948 117.0 J1728+1215 127.3 J1745+1720 121.1 J1745+1814 120.6 J1751+0939 123.3 J1752+1734 119.5 J1759+2343 115.2 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