COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: BN021 - VLBA fmt 6cm phase ref monitoring of LLAGNs Exp. Code: bn021ae 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 24 Dec 2003 Day 358 --- 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 18 01 04 J1751+0939 18 06 11 57.7 186.7 0.2 5.1 0 1 1 0 18 01 04 18 03 03 =1749+096 18 08 11 57.7 187.6 0.3 5.8 120 F 1 798 18 03 03 J1752+1734 18 08 11 65.6 188.8 0.3 6.9 -22 1 1 798 18 03 03 18 04 03 =1750+175 18 09 11 65.5 189.4 0.3 7.3 38 F 1 1197 18 04 03 NGC6500 18 09 11 66.4 187.8 0.2 6.1 -8 1 1 1197 18 04 03 18 06 03 --- 18 11 11 66.3 188.9 0.3 7.0 112 F 1 1995 18 06 03 J1751+0939 18 11 11 57.6 189.0 0.3 6.8 -24 1 1 1995 18 06 03 18 07 03 =1749+096 18 12 11 57.6 189.4 0.3 7.1 36 F 1 2393 18 07 03 J1752+1734 18 12 11 65.4 191.1 0.3 8.7 -22 1 1 2393 18 07 03 18 08 03 =1750+175 18 13 11 65.4 191.7 0.3 9.1 38 F 1 2792 18 08 03 NGC6500 18 13 11 66.3 190.1 0.3 7.9 -8 1 1 2792 18 08 03 18 10 02 --- 18 15 11 66.2 191.3 0.3 8.8 112 F 1 3590 18 10 02 J1751+0939 18 15 11 57.5 190.8 0.4 8.2 -24 1 1 3590 18 10 02 18 11 02 =1749+096 18 16 11 57.4 191.3 0.4 8.5 36 F 1 3989 18 11 02 J1752+1734 18 16 11 65.3 193.4 0.4 10.4 -22 1 1 3989 18 11 02 18 12 02 =1750+175 18 17 11 65.2 193.9 0.4 10.9 38 F 1 4388 18 12 02 NGC6500 18 17 11 66.1 192.4 0.4 9.7 -8 1 1 4388 18 12 02 18 14 02 --- 18 19 11 66.1 193.6 0.4 10.6 112 F 1 5186 18 14 02 J1751+0939 18 19 11 57.3 192.6 0.5 9.5 -23 1 1 5186 18 14 02 18 15 02 =1749+096 18 20 11 57.3 193.1 0.5 9.8 36 F 1 5585 18 15 02 J1752+1734 18 20 11 65.1 195.6 0.5 12.1 -22 1 1 5585 18 15 02 18 16 01 =1750+175 18 21 11 65.1 196.1 0.5 12.6 38 F 1 5984 18 16 01 NGC6500 18 21 11 66.0 194.7 0.4 11.5 -8 1 1 5984 18 16 01 18 18 01 --- 18 23 11 65.9 195.9 0.5 12.4 112 F 1 6781 18 18 01 J1751+0939 18 23 11 57.1 194.4 0.5 10.8 -23 1 1 6781 18 18 01 18 19 01 =1749+096 18 24 11 57.1 194.9 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 24 Dec 2003 Day 358 --- 18 19 01 J1752+1734 18 24 11 64.9 197.8 0.5 13.8 -22 1 1 7180 18 19 01 18 20 01 =1750+175 18 25 11 64.8 198.3 0.5 14.2 38 F 1 7579 18 20 01 NGC6500 18 25 11 65.8 197.0 0.5 13.3 -8 1 1 7579 18 20 01 18 22 00 --- 18 27 11 65.6 198.1 0.5 14.1 112 F 1 8377 18 22 00 J1751+0939 18 27 11 56.9 196.2 0.6 12.2 -23 1 1 8377 18 22 00 18 23 00 =1749+096 18 28 11 56.9 196.6 0.6 12.5 36 F 1 8776 18 23 00 J1752+1734 18 28 11 64.6 200.0 0.6 15.5 -22 1 1 8776 18 23 00 18 24 00 =1750+175 18 29 11 64.6 200.5 0.6 15.9 38 F 1 9175 18 24 00 NGC6500 18 29 11 65.5 199.2 0.6 15.0 -8 1 1 9175 18 24 00 18 26 00 --- 18 31 11 65.4 200.3 0.6 15.8 112 F 1 9973 18 26 00 J1751+0939 18 31 11 56.7 197.9 0.7 13.5 -23 1 1 9973 18 26 00 18 27 00 =1749+096 18 32 11 56.7 198.4 0.7 13.8 36 F 1 10372 18 27 00 J1752+1734 18 32 11 64.4 202.1 0.7 17.1 -21 1 1 10372 18 27 00 18 27 59 =1750+175 18 33 11 64.3 202.6 0.7 17.5 38 F 1 10771 18 27 59 NGC6500 18 33 11 65.3 201.4 0.6 16.7 -8 1 1 10771 18 27 59 18 29 59 --- 18 35 11 65.1 202.5 0.7 17.5 112 F 1 11568 18 29 59 J1751+0939 18 35 11 56.5 199.7 0.7 14.8 -23 1 1 11568 18 29 59 18 30 59 =1749+096 18 36 11 56.4 200.1 0.7 15.1 37 F 1 11967 18 30 59 J1752+1734 18 36 11 64.1 204.2 0.7 18.7 -21 1 1 11967 18 30 59 18 31 59 =1750+175 18 37 11 64.0 204.7 0.7 19.1 38 F 1 12366 18 31 59 J1759+2343 18 37 11 70.3 206.7 0.6 21.4 -19 1 1 12366 18 31 59 18 32 59 =1756+237 18 38 11 70.2 207.3 0.7 21.9 41 F 1 12765 18 32 59 J1745+1814 18 38 11 64.0 209.2 0.9 22.5 -18 1 1 12765 18 32 59 18 33 58 =1743+182 18 39 11 63.9 209.7 0.9 22.9 41 F 1 13164 18 33 58 J1745+1720 18 39 11 63.0 209.1 0.9 22.3 -8 1 1 13164 18 33 58 18 34 58 =1743+173 18 40 11 62.9 209.6 0.9 22.7 52 F 1 13563 18 34 58 J1728+1215 18 40 11 56.6 213.2 1.2 24.7 -19 1 1 13563 18 34 58 18 35 58 =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 24 Dec 2003 Day 358 --- 18 37 59 J1751+0939 18 43 12 55.9 203.1 0.9 17.3 108 1 1 13962 18 37 59 18 38 59 =1749+096 18 44 12 55.9 203.5 0.9 17.6 60 F 1 14361 18 38 59 J1752+1734 18 44 12 63.4 208.2 0.9 21.7 -21 1 1 14361 18 38 59 18 39 58 =1750+175 18 45 12 63.3 208.7 0.9 22.1 39 F 1 14760 18 39 58 NGC6500 18 45 12 64.3 207.7 0.8 21.5 -8 1 1 14760 18 39 58 18 41 58 --- 18 47 12 64.2 208.8 0.9 22.2 112 F 1 15557 18 41 58 J1751+0939 18 47 12 55.6 204.8 0.9 18.5 -23 1 1 15557 18 41 58 18 42 58 =1749+096 18 48 12 55.6 205.2 0.9 18.8 37 F 1 15956 18 42 58 J1752+1734 18 48 12 63.1 210.2 0.9 23.2 -21 1 1 15956 18 42 58 18 43 58 =1750+175 18 49 12 63.0 210.7 0.9 23.5 39 F 1 16355 18 43 58 NGC6500 18 49 12 64.0 209.8 0.9 23.0 -8 1 1 16355 18 43 58 18 45 57 --- 18 51 12 63.8 210.8 0.9 23.7 112 F 1 17153 18 45 57 J1751+0939 18 51 12 55.3 206.4 1.0 19.7 -23 1 2 17153 18 45 57 18 46 57 =1749+096 18 52 12 55.2 206.8 1.0 20.0 37 R 1 16754 18 46 57 J1752+1734 18 52 12 62.7 212.1 1.0 24.6 -21 1 2 16754 18 46 57 18 47 57 =1750+175 18 53 12 62.6 212.6 1.0 24.9 39 R 1 16355 18 47 57 NGC6500 18 53 12 63.6 211.7 1.0 24.4 -8 1 2 16355 18 47 57 18 49 57 --- 18 55 12 63.4 212.7 1.0 25.1 112 R 1 15557 18 49 57 J1751+0939 18 55 12 55.0 208.0 1.1 20.8 -23 1 2 15557 18 49 57 18 50 57 =1749+096 18 56 12 54.9 208.4 1.1 21.1 37 R 1 15159 18 50 57 J1752+1734 18 56 12 62.3 214.0 1.1 25.9 -21 1 2 15159 18 50 57 18 51 56 =1750+175 18 57 12 62.2 214.4 1.1 26.2 39 R 1 14760 18 51 56 NGC6500 18 57 12 63.2 213.7 1.0 25.8 -8 1 2 14760 18 51 56 18 53 56 --- 18 59 12 63.0 214.6 1.1 26.5 112 R 1 13962 18 53 56 J1751+0939 18 59 12 54.6 209.6 1.1 22.0 -23 1 2 13962 18 53 56 18 54 56 =1749+096 19 00 12 54.5 210.0 1.1 22.2 37 R 1 13563 18 54 56 J1752+1734 19 00 12 61.8 215.8 1.1 27.2 -21 1 2 13563 18 54 56 18 55 56 =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 24 Dec 2003 Day 358 --- 18 55 56 NGC6500 19 01 12 62.8 215.5 1.1 27.2 -8 1 2 13164 18 55 56 18 57 55 --- 19 03 12 62.6 216.4 1.1 27.8 112 R 1 12366 18 57 55 J1751+0939 19 03 12 54.2 211.2 1.2 23.1 -23 1 2 12366 18 57 55 18 58 55 =1749+096 19 04 12 54.1 211.6 1.2 23.3 37 R 1 11967 18 58 55 J1752+1734 19 04 12 61.4 217.6 1.2 28.5 -21 1 2 11967 18 58 55 18 59 55 =1750+175 19 05 12 61.3 218.0 1.2 28.8 39 R 1 11568 18 59 55 J1759+2343 19 05 12 67.3 222.4 1.1 33.4 -18 1 2 11568 18 59 55 19 00 55 =1756+237 19 06 12 67.2 222.9 1.1 33.7 42 R 1 11169 19 00 55 J1745+1814 19 06 12 60.9 222.0 1.3 31.7 -19 1 2 11169 19 00 55 19 01 55 =1743+182 19 07 12 60.8 222.4 1.4 32.0 41 R 1 10771 19 01 55 J1745+1720 19 07 12 60.0 221.6 1.4 31.3 -8 1 2 10771 19 01 55 19 02 55 =1743+173 19 08 12 59.9 222.0 1.4 31.5 52 R 1 10372 19 02 55 J1728+1215 19 08 12 53.3 223.7 1.7 31.8 -19 1 2 10372 19 02 55 19 03 54 =1725+123 19 09 12 53.2 224.1 1.7 32.1 41 R 1 9973 19 05 55 J1642+3948 19 11 13 62.1 278.5 2.5 73.8 78 1 2 9973 19 05 55 19 08 55 =1641+399 19 14 13 61.6 278.8 2.5 73.6 180 R 1 8776 19 08 55 J1751+0939 19 14 13 53.1 215.3 1.4 26.0 -48 1 2 8776 19 08 55 19 11 24 =1749+096 19 16 43 52.8 216.3 1.4 26.6 101 R 1 7779 19 11 24 J1752+1734 19 16 43 59.9 222.8 1.4 32.1 -20 1 2 7779 19 11 24 19 12 24 =1750+175 19 17 43 59.8 223.2 1.4 32.4 40 R 1 7380 19 12 24 NGC6500 19 17 43 60.8 222.7 1.4 32.2 -8 1 2 7380 19 12 24 19 14 24 --- 19 19 43 60.6 223.5 1.4 32.8 112 R 1 6582 19 14 24 J1751+0939 19 19 43 52.5 217.4 1.5 27.3 -22 1 2 6582 19 14 24 19 15 24 =1749+096 19 20 43 52.4 217.7 1.5 27.6 38 R 1 6183 19 15 24 J1752+1734 19 20 43 59.4 224.4 1.5 33.2 -20 1 2 6183 19 15 24 19 16 23 =1750+175 19 21 43 59.2 224.8 1.5 33.4 40 R 1 5784 19 16 23 NGC6500 19 21 43 60.3 224.4 1.4 33.3 -8 1 2 5784 19 16 23 19 18 23 --- 19 23 43 60.0 225.2 1.5 33.9 112 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 24 Dec 2003 Day 358 --- 19 18 23 J1751+0939 19 23 43 52.0 218.8 1.5 28.3 -22 1 2 4986 19 18 23 19 19 23 =1749+096 19 24 43 51.9 219.1 1.6 28.5 38 R 1 4587 19 19 23 J1752+1734 19 24 43 58.9 225.9 1.5 34.2 -20 1 2 4587 19 19 23 19 20 23 =1750+175 19 25 43 58.7 226.3 1.5 34.5 40 R 1 4189 19 20 23 NGC6500 19 25 43 59.8 225.9 1.5 34.4 -8 1 2 4189 19 20 23 19 22 22 --- 19 27 43 59.5 226.7 1.5 34.9 112 R 1 3391 19 22 22 J1751+0939 19 27 43 51.6 220.2 1.6 29.2 -22 1 2 3391 19 22 22 19 23 22 =1749+096 19 28 43 51.4 220.5 1.6 29.4 38 R 1 2992 19 23 22 J1752+1734 19 28 43 58.3 227.5 1.6 35.2 -20 1 2 2992 19 23 22 19 24 22 =1750+175 19 29 43 58.2 227.8 1.6 35.4 40 R 1 2593 19 24 22 NGC6500 19 29 43 59.2 227.5 1.6 35.4 -8 1 2 2593 19 24 22 19 26 22 --- 19 31 43 59.0 228.2 1.6 35.9 112 R 1 1795 19 26 22 J1751+0939 19 31 43 51.1 221.5 1.7 30.1 -22 1 2 1795 19 26 22 19 27 22 =1749+096 19 32 43 51.0 221.9 1.7 30.3 38 R 1 1396 19 27 22 J1752+1734 19 32 43 57.8 228.9 1.7 36.1 -20 1 2 1396 19 27 22 19 28 21 =1750+175 19 33 43 57.6 229.3 1.7 36.4 40 R 1 997 19 28 21 NGC6500 19 33 43 58.7 229.0 1.6 36.3 -8 1 2 997 19 28 21 19 30 21 --- 19 35 43 58.4 229.7 1.7 36.8 112 R 1 199 19 30 21 J1751+0939 19 35 43 50.6 222.9 1.7 31.0 -22 1 3 199 19 30 21 19 31 21 =1749+096 19 36 43 50.4 223.2 1.8 31.2 38 F 1 598 19 31 21 J1752+1734 19 36 43 57.2 230.3 1.7 37.0 -19 1 3 598 19 31 21 19 32 21 =1750+175 19 37 43 57.0 230.7 1.7 37.2 40 F 1 997 19 32 21 NGC6500 19 37 43 58.1 230.4 1.7 37.3 -8 1 3 997 19 32 21 19 34 20 --- 19 39 43 57.8 231.1 1.7 37.7 112 F 1 1795 19 34 20 J1751+0939 19 39 43 50.1 224.2 1.8 31.8 -22 1 3 1795 19 34 20 19 35 20 =1749+096 19 40 43 49.9 224.5 1.8 32.0 38 F 1 2194 19 35 20 J1752+1734 19 40 43 56.6 231.7 1.8 37.9 -19 1 3 2194 19 35 20 19 36 20 =1750+175 19 41 43 56.5 232.1 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 24 Dec 2003 Day 358 --- 19 36 20 NGC6500 19 41 43 57.5 231.8 1.8 38.1 -8 1 3 2593 19 36 20 19 38 20 --- 19 43 43 57.2 232.5 1.8 38.6 112 F 1 3391 19 38 20 J1751+0939 19 43 43 49.5 225.5 1.9 32.7 -21 1 3 3391 19 38 20 19 39 20 =1749+096 19 44 43 49.4 225.8 1.9 32.9 38 F 1 3790 19 39 20 J1752+1734 19 44 43 56.0 233.1 1.9 38.7 -19 1 3 3790 19 39 20 19 40 19 =1750+175 19 45 43 55.9 233.4 1.9 38.9 41 F 1 4189 19 40 19 J1759+2343 19 45 43 61.4 239.2 1.8 44.4 -17 1 3 4189 19 40 19 19 41 19 =1756+237 19 46 43 61.3 239.5 1.8 44.6 43 F 1 4587 19 41 19 J1745+1814 19 46 43 55.2 236.7 2.0 41.0 -18 1 3 4587 19 41 19 19 42 19 =1743+182 19 47 43 55.0 237.0 2.0 41.2 42 F 1 4986 19 42 19 J1745+1720 19 47 43 54.3 236.1 2.0 40.4 -7 1 3 4986 19 42 19 19 43 19 =1743+173 19 48 43 54.1 236.4 2.0 40.6 52 F 1 5385 19 43 19 J1728+1215 19 48 43 47.5 236.3 2.3 39.4 -19 1 3 5385 19 43 19 19 44 19 =1725+123 19 49 43 47.4 236.6 2.4 39.6 41 F 1 5784 19 44 19 J1751+0939 19 49 43 48.7 227.4 2.0 33.8 -12 1 3 5784 19 44 19 19 45 19 =1749+096 19 50 43 48.6 227.7 2.0 34.0 48 F 1 6183 19 45 19 J1752+1734 19 50 43 55.1 235.0 2.0 39.9 -19 1 3 6183 19 45 19 19 46 19 =1750+175 19 51 43 55.0 235.3 2.0 40.1 41 F 1 6582 19 46 19 NGC6500 19 51 43 56.0 235.2 1.9 40.2 -8 1 3 6582 19 46 19 19 48 18 --- 19 53 43 55.7 235.8 2.0 40.5 112 F 1 7380 19 48 18 J1751+0939 19 53 43 48.2 228.6 2.0 34.6 -21 1 3 7380 19 48 18 19 49 18 =1749+096 19 54 43 48.0 228.9 2.1 34.8 39 F 1 7779 19 49 18 J1752+1734 19 54 43 54.5 236.3 2.0 40.6 -19 1 3 7779 19 49 18 19 50 18 =1750+175 19 55 43 54.3 236.6 2.0 40.8 41 F 1 8178 19 50 18 NGC6500 19 55 43 55.4 236.5 2.0 40.9 -8 1 3 8178 19 50 18 19 52 18 --- 19 57 43 55.1 237.1 2.0 41.3 112 F 1 8975 19 52 18 J1751+0939 19 57 43 47.6 229.8 2.1 35.3 -21 1 3 8975 19 52 18 19 53 17 =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 24 Dec 2003 Day 358 --- 19 53 17 J1752+1734 19 58 43 53.9 237.5 2.1 41.3 -19 1 3 9374 19 53 17 19 54 17 =1750+175 19 59 43 53.7 237.8 2.1 41.5 41 F 1 9773 19 54 17 NGC6500 19 59 43 54.8 237.7 2.1 41.6 -8 1 3 9773 19 54 17 19 56 17 --- 20 01 43 54.5 238.3 2.1 42.0 112 F 1 10571 19 56 17 J1751+0939 20 01 43 47.0 231.0 2.2 36.0 -21 1 3 10571 19 56 17 19 57 17 =1749+096 20 02 43 46.9 231.3 2.2 36.2 39 F 1 10970 19 57 17 J1752+1734 20 02 43 53.2 238.7 2.2 42.0 -19 1 3 10970 19 57 17 19 58 17 =1750+175 20 03 43 53.1 239.0 2.2 42.1 41 F 1 11369 19 58 17 NGC6500 20 03 43 54.2 238.9 2.1 42.3 -8 1 3 11369 19 58 17 20 00 16 --- 20 05 43 53.8 239.5 2.2 42.6 112 F 1 12167 20 00 16 J1751+0939 20 05 43 46.4 232.2 2.2 36.7 -21 1 3 12167 20 00 16 20 01 16 =1749+096 20 06 43 46.3 232.5 2.3 36.9 39 F 1 12566 20 01 16 J1752+1734 20 06 43 52.6 239.9 2.2 42.6 -19 1 3 12566 20 01 16 20 02 16 =1750+175 20 07 43 52.4 240.2 2.2 42.7 41 F 1 12964 20 02 16 NGC6500 20 07 43 53.5 240.1 2.2 42.9 -8 1 3 12964 20 02 16 20 04 16 --- 20 09 43 53.2 240.7 2.2 43.2 112 F 1 13762 20 04 16 J1751+0939 20 09 43 45.9 233.3 2.3 37.3 -21 1 3 13762 20 04 16 20 05 15 =1749+096 20 10 43 45.7 233.6 2.3 37.5 39 F 1 14161 20 05 15 J1752+1734 20 10 43 51.9 241.0 2.3 43.2 -18 1 3 14161 20 05 15 20 06 15 =1750+175 20 11 43 51.8 241.3 2.3 43.3 41 F 1 14560 20 06 15 J1759+2343 20 11 43 57.1 247.2 2.2 48.7 -17 1 3 14560 20 06 15 20 07 15 =1756+237 20 12 43 56.9 247.5 2.2 48.8 43 F 1 14959 20 07 15 J1745+1814 20 12 43 51.0 244.2 2.4 45.0 -18 1 3 14959 20 07 15 20 08 15 =1743+182 20 13 43 50.8 244.5 2.5 45.1 42 F 1 15358 20 08 15 J1745+1720 20 13 43 50.1 243.6 2.5 44.4 -7 1 3 15358 20 08 15 20 09 15 =1743+173 20 14 43 49.9 243.8 2.5 44.5 52 F 1 15757 20 09 15 J1728+1215 20 14 43 43.3 243.2 2.8 42.9 -19 1 3 15757 20 09 15 20 10 15 =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 24 Dec 2003 Day 358 --- 20 10 15 J1751+0939 20 15 43 44.9 235.0 2.4 38.3 -12 1 3 16156 20 10 15 20 11 14 =1749+096 20 16 43 44.8 235.2 2.4 38.4 48 F 1 16555 20 11 14 J1752+1734 20 16 43 51.0 242.7 2.4 44.0 -18 1 3 16555 20 11 14 20 12 14 =1750+175 20 17 43 50.8 243.0 2.4 44.2 42 F 1 16954 20 12 14 NGC6500 20 17 43 51.9 242.9 2.4 44.4 -8 1 4 16954 20 12 14 20 14 14 --- 20 19 43 51.5 243.5 2.4 44.7 112 R 1 17449 20 14 14 J1751+0939 20 19 43 44.3 236.0 2.5 38.9 -20 1 4 17449 20 14 14 20 15 14 =1749+096 20 20 43 44.2 236.3 2.5 39.0 39 R 1 17050 20 15 14 J1752+1734 20 20 43 50.3 243.8 2.5 44.6 -18 1 4 17050 20 15 14 20 16 14 =1750+175 20 21 43 50.1 244.0 2.5 44.7 42 R 1 16651 20 16 14 NGC6500 20 21 43 51.2 244.0 2.4 44.9 -8 1 4 16651 20 16 14 20 18 13 --- 20 23 43 50.9 244.6 2.5 45.2 112 R 1 15853 20 18 13 J1751+0939 20 23 43 43.7 237.1 2.5 39.4 -20 1 4 15853 20 18 13 20 19 13 =1749+096 20 24 43 43.6 237.4 2.6 39.6 40 R 1 15454 20 19 13 J1752+1734 20 24 43 49.6 244.8 2.5 45.1 -18 1 4 15454 20 19 13 20 20 13 =1750+175 20 25 43 49.4 245.1 2.5 45.2 42 R 1 15055 20 20 13 NGC6500 20 25 43 50.5 245.1 2.5 45.4 -8 1 4 15055 20 20 13 20 22 13 --- 20 27 43 50.2 245.6 2.5 45.7 112 R 1 14257 20 22 13 J1751+0939 20 27 43 43.1 238.2 2.6 40.0 -20 1 4 14257 20 22 13 20 23 12 =1749+096 20 28 43 42.9 238.4 2.6 40.1 40 R 1 13858 20 23 12 J1752+1734 20 28 43 48.9 245.8 2.6 45.5 -18 1 4 13858 20 23 12 20 24 12 =1750+175 20 29 43 48.8 246.1 2.6 45.7 42 R 1 13460 20 24 12 NGC6500 20 29 43 49.9 246.1 2.6 45.9 -8 1 4 13460 20 24 12 20 26 12 --- 20 31 43 49.5 246.6 2.6 46.2 112 R 1 12662 20 26 12 J1751+0939 20 31 43 42.4 239.2 2.7 40.5 -20 1 4 12662 20 26 12 20 27 12 =1749+096 20 32 43 42.3 239.4 2.7 40.6 40 R 1 12263 20 27 12 J1752+1734 20 32 43 48.3 246.9 2.7 46.0 -18 1 4 12263 20 27 12 20 28 12 =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 24 Dec 2003 Day 358 --- 20 28 12 NGC6500 20 33 43 49.2 247.1 2.6 46.4 -8 1 4 11864 20 28 12 20 30 11 --- 20 35 43 48.8 247.6 2.7 46.6 112 R 1 11066 20 30 11 J1751+0939 20 35 43 41.8 240.2 2.7 41.0 -20 1 4 11066 20 30 11 20 31 11 =1749+096 20 36 43 41.6 240.4 2.8 41.1 40 R 1 10667 20 31 11 J1752+1734 20 36 43 47.6 247.8 2.7 46.4 -18 1 4 10667 20 31 11 20 32 11 =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 08.154019 18 20 39.91157 * 18 20 17.66100 18 20 10.15199 From catalog imbedded in main SCHED input file. * J1642+3948 16 41 17.606214 * 16 42 58.809952 16 43 04.787276 1641+399 39 54 10.81489 * 39 48 36.99395 39 48 01.93129 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 16.074102 1725+123 12 18 03.42295 * 12 15 39.48600 12 15 22.53997 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 43.697869 1743+173 17 21 09.18610 * 17 20 01.42341 17 19 50.26497 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 04.321983 1743+182 18 15 56.63458 * 18 14 50.42224 18 14 39.35387 /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 42.052490 1749+096 09 39 42.82596 * 09 39 00.72851 09 38 51.87520 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 54.457997 1750+175 17 34 56.75234 * 17 34 20.35028 17 34 11.71458 /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 08.133465 1756+237 23 43 55.77912 * 23 43 46.95379 23 43 40.43806 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 41.9 J1642+3948 66.5 J1728+1215 37.2 J1745+1720 41.2 J1745+1814 42.1 J1751+0939 33.4 J1752+1734 41.2 J1759+2343 47.2 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