COVER INFORMATION Station: VLA1 (Code Y ) Experiment: NGC7674 at 90 cm Exp. Code: bm193c Schedule Version: 1.00 Processed by SCHED version: Release of 02 July 2002 PI: E. Momjian Address: NRAO P.O. Box O Socorro, NM 87801 Phone: 1-505-835-7457 (work) EMAIL: emomjian@nrao.edu Fax: 1-505-835-7027 Phone during observation: Observing mode: 90cm 128-8-2 Notes: Schedule for VLA1 (Code Y ) Page 2 NGC7674 at 90 cm 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) ---------------------------------------------------------------------------------------- --- Sat 30 Aug 2003 Day 242 --- Next scan frequencies: 322.99 322.99 326.99 326.99 330.99 330.99 334.99 334.99 Next BBC frequencies: 600.39 600.39 604.39 604.39 608.39 608.39 612.39 612.39 Next scan bandwidths: 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 02 30 00 N7674_90CM 17 51 04 10.0 86.5 -5.6 -56.7 0 1 1 0 02 30 00 02 42 00 --- 18 03 06 12.5 88.1 -5.4 -56.8 720 F 1 4800 02 42 00 J2330+11 18 03 06 12.8 85.2 -5.5 -57.2 -19 1 1 4800 02 42 00 02 45 00 --- 18 06 07 13.4 85.6 -5.4 -57.3 161 F 1 6000 02 45 00 N7674_90CM 18 06 07 13.1 88.5 -5.3 -56.8 -19 1 1 6000 02 45 00 02 57 00 --- 18 18 09 15.6 90.2 -5.1 -56.9 701 F 1 10800 02 57 00 J2330+11 18 18 09 15.9 87.3 -5.2 -57.4 -19 1 1 10800 02 57 00 03 00 00 --- 18 21 09 16.5 87.7 -5.2 -57.5 161 F 1 12000 03 00 00 N7674_90CM 18 21 09 16.3 90.6 -5.1 -56.9 -19 1 1 12000 03 00 00 03 12 00 --- 18 33 11 18.8 92.3 -4.9 -56.8 701 F 1 16800 03 12 00 J2330+11 18 33 11 19.0 89.4 -5.0 -57.5 -19 1 2 16800 03 12 00 03 15 00 --- 18 36 12 19.6 89.8 -4.9 -57.5 161 R 1 17200 03 15 00 N7674_90CM 18 36 12 19.4 92.8 -4.8 -56.8 -20 1 2 17200 03 15 00 03 27 00 --- 18 48 14 21.9 94.5 -4.6 -56.6 700 R 1 12400 03 27 00 J2330+11 18 48 14 22.1 91.5 -4.7 -57.5 -20 1 2 12400 03 27 00 03 30 00 --- 18 51 14 22.7 91.9 -4.7 -57.5 160 R 1 11200 03 30 00 N7674_90CM 18 51 14 22.5 95.0 -4.6 -56.5 -20 1 2 11200 03 30 00 03 42 00 --- 19 03 16 25.0 96.8 -4.4 -56.3 700 R 1 6400 03 42 00 J2330+11 19 03 16 25.2 93.6 -4.5 -57.4 -20 1 2 6400 03 42 00 03 45 00 --- 19 06 16 25.8 94.1 -4.4 -57.3 160 R 1 5200 03 45 00 N7674_90CM 19 06 16 25.6 97.2 -4.3 -56.2 -20 1 2 5200 03 45 00 03 57 00 --- 19 18 18 28.0 99.1 -4.1 -55.8 700 R 1 400 03 57 00 J2330+11 19 18 18 28.3 95.9 -4.2 -57.1 -20 1 3 400 03 57 00 04 00 00 --- 19 21 19 28.9 96.3 -4.2 -57.0 160 F 1 1600 Schedule for VLA1 (Code Y ) Page 3 NGC7674 at 90 cm 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) ---------------------------------------------------------------------------------------- --- Sat 30 Aug 2003 Day 242 --- 04 00 00 N7674_90CM 19 21 19 28.7 99.6 -4.1 -55.7 -20 1 3 1600 04 00 00 04 12 00 --- 19 33 21 31.1 101.5 -3.9 -55.2 700 F 1 6400 04 12 00 J2330+11 19 33 21 31.4 98.2 -4.0 -56.6 -20 1 3 6400 04 12 00 04 15 00 --- 19 36 21 32.0 98.7 -3.9 -56.5 160 F 1 7600 04 17 00 N7674_90CM 19 38 22 32.1 102.3 -3.8 -54.9 99 1 3 7600 04 17 00 04 29 00 --- 19 50 24 34.5 104.4 -3.6 -54.2 720 F 1 12400 04 29 00 J2330+11 19 50 24 34.9 101.0 -3.7 -55.9 -20 1 3 12400 04 29 00 04 32 00 --- 19 53 24 35.5 101.5 -3.6 -55.8 160 F 1 13600 04 32 00 N7674_90CM 19 53 24 35.2 104.9 -3.5 -54.0 -20 1 4 13600 04 32 00 04 44 00 --- 20 05 26 37.5 107.1 -3.3 -53.2 700 R 1 16800 04 44 00 J2330+11 20 05 26 37.9 103.6 -3.4 -55.1 -20 1 4 16800 04 44 00 04 47 00 --- 20 08 27 38.5 104.1 -3.4 -54.9 160 R 1 15600 04 47 00 N7674_90CM 20 08 27 38.1 107.7 -3.3 -52.9 -20 1 4 15600 04 47 00 04 59 00 --- 20 20 29 40.5 110.0 -3.1 -51.9 700 R 1 10800 04 59 00 J2330+11 20 20 29 40.9 106.3 -3.2 -54.1 -21 1 4 10800 04 59 00 05 02 00 --- 20 23 29 41.5 106.9 -3.1 -53.8 159 R 1 9600 05 02 00 N7674_90CM 20 23 29 41.1 110.7 -3.0 -51.6 -21 1 4 9600 05 02 00 05 14 00 --- 20 35 31 43.4 113.2 -2.8 -50.3 699 R 1 4800 05 14 00 J2330+11 20 35 31 43.9 109.3 -2.9 -52.8 -21 1 4 4800 05 14 00 05 17 00 --- 20 38 32 44.5 109.9 -2.9 -52.5 159 R 1 3600 05 17 00 N7674_90CM 20 38 32 44.0 113.8 -2.8 -50.0 -21 1 5 3600 05 17 00 05 29 00 --- 20 50 34 46.2 116.6 -2.6 -48.5 699 F 1 1200 05 29 00 J2330+11 20 50 34 46.8 112.6 -2.7 -51.2 -21 1 5 1200 05 29 00 05 32 00 --- 20 53 34 47.4 113.2 -2.6 -50.8 159 F 1 2400 05 32 00 N7674_90CM 20 53 34 46.8 117.3 -2.5 -48.1 -21 1 5 2400 05 32 00 05 44 00 --- 21 05 36 49.0 120.3 -2.3 -46.3 699 F 1 7200 05 44 00 J2330+11 21 05 36 49.7 116.1 -2.4 -49.3 -21 1 5 7200 05 44 00 05 47 00 --- 21 08 37 50.2 116.8 -2.4 -48.8 159 F 1 8400 Schedule for VLA1 (Code Y ) Page 4 NGC7674 at 90 cm 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) ---------------------------------------------------------------------------------------- --- Sat 30 Aug 2003 Day 242 --- 05 47 00 N7674_90CM 21 08 37 49.5 121.1 -2.3 -45.8 -21 1 5 8400 05 47 00 05 59 00 --- 21 20 39 51.6 124.4 -2.1 -43.7 699 F 1 13200 05 59 00 J2330+11 21 20 39 52.4 120.0 -2.2 -46.9 -22 1 5 13200 05 59 00 06 02 00 --- 21 23 39 52.9 120.8 -2.1 -46.4 158 F 1 14400 06 02 00 N7674_90CM 21 23 39 52.1 125.3 -2.0 -43.1 -22 1 6 14400 06 02 00 06 14 00 --- 21 35 41 54.1 129.0 -1.8 -40.6 698 R 1 16000 06 14 00 J2330+11 21 35 41 55.0 124.4 -1.9 -44.1 -22 1 6 16000 06 14 00 06 17 00 --- 21 38 41 55.6 125.3 -1.9 -43.5 158 R 1 14800 06 19 00 3C454.3 21 40 42 65.6 132.8 -1.2 -39.3 75 1 6 14800 06 19 00 06 25 00 --- 21 46 43 66.5 135.6 -1.1 -37.1 360 R 1 12400 06 25 00 N7674_90CM 21 46 43 55.8 132.7 -1.6 -38.0 -47 1 6 12400 06 25 00 06 37 00 --- 21 58 45 57.6 137.0 -1.4 -34.8 673 R 1 7600 06 37 00 J2330+11 21 58 45 58.8 132.2 -1.5 -38.7 -22 1 6 7600 06 37 00 06 40 00 --- 22 01 45 59.3 133.3 -1.5 -37.9 158 R 1 6400 06 40 00 N7674_90CM 22 01 45 58.0 138.2 -1.4 -33.9 -22 1 6 6400 06 40 00 06 52 00 --- 22 13 47 59.6 143.1 -1.2 -30.2 698 R 1 1600 06 52 00 J2330+11 22 13 47 61.0 138.1 -1.3 -34.3 -22 1 6 1600 06 52 00 06 55 00 --- 22 16 48 61.4 139.3 -1.2 -33.3 158 R 1 400 06 55 00 N7674_90CM 22 16 48 59.9 144.3 -1.1 -29.2 -22 1 7 400 06 55 00 07 07 00 --- 22 28 50 61.3 149.7 -0.9 -25.0 698 F 1 5200 07 07 00 J2330+11 22 28 50 62.9 144.8 -1.0 -29.1 -22 1 7 5200 07 07 00 07 10 00 --- 22 31 50 63.3 146.2 -1.0 -28.0 158 F 1 6400 07 10 00 N7674_90CM 22 31 50 61.6 151.2 -0.9 -23.8 -22 1 7 6400 07 10 00 07 22 00 --- 22 43 52 62.7 157.1 -0.7 -19.0 698 F 1 11200 07 22 00 J2330+11 22 43 52 64.6 152.3 -0.8 -23.1 -22 1 7 11200 07 22 00 07 25 00 --- 22 46 53 64.9 153.9 -0.7 -21.8 158 F 1 12400 07 25 00 N7674_90CM 22 46 53 62.9 158.6 -0.6 -17.8 -22 1 7 12400 07 25 00 07 37 00 --- 22 58 55 63.7 165.0 -0.4 -12.5 698 F 1 17200 Schedule for VLA1 (Code Y ) Page 5 NGC7674 at 90 cm 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) ---------------------------------------------------------------------------------------- --- Sat 30 Aug 2003 Day 242 --- 07 37 00 J2330+11 22 58 55 65.8 160.5 -0.5 -16.3 -22 1 8 17200 07 37 00 07 40 00 --- 23 01 55 66.0 162.3 -0.5 -14.9 158 R 1 16000 07 40 00 N7674_90CM 23 01 55 63.9 166.7 -0.4 -11.1 -22 1 8 16000 07 40 00 07 52 00 --- 23 13 57 64.3 173.4 -0.2 -5.5 698 R 1 11200 07 52 00 J2330+11 23 13 57 66.6 169.5 -0.3 -8.9 -22 1 8 11200 07 52 00 07 55 00 --- 23 16 58 66.7 171.3 -0.2 -7.3 158 R 1 10000 07 55 00 N7674_90CM 23 16 58 64.4 175.1 -0.1 -4.1 -22 1 8 10000 07 55 00 08 07 00 --- 23 29 00 64.4 182.0 0.1 1.7 698 R 1 5200 08 07 00 J2330+11 23 29 00 66.9 178.8 0.0 -1.0 -23 1 8 5200 08 07 00 08 10 00 --- 23 32 00 66.9 180.7 0.0 0.6 157 R 1 4000 08 12 00 3C454.3 23 34 00 70.0 209.0 0.7 24.7 63 1 8 4000 08 12 00 08 18 00 --- 23 40 01 69.3 212.8 0.8 27.8 360 R 1 1600 08 18 00 N7674_90CM 23 40 01 64.2 188.3 0.2 6.9 -52 1 9 1600 08 18 00 08 30 00 --- 23 52 03 63.7 195.0 0.4 12.5 668 F 1 3200 08 30 00 J2330+11 23 52 03 66.4 193.1 0.4 11.0 -23 1 9 3200 08 30 00 08 33 00 --- 23 55 04 66.3 194.9 0.4 12.5 157 F 1 4400 08 33 00 N7674_90CM 23 55 04 63.5 196.6 0.5 13.9 -23 1 9 4400 08 33 00 08 45 00 --- 00 07 06 62.7 202.9 0.7 19.0 697 F 1 9200 08 45 00 J2330+11 00 07 06 65.5 201.9 0.6 18.3 -23 1 9 9200 08 45 00 08 48 00 --- 00 10 06 65.3 203.6 0.7 19.7 157 F 1 10400 08 48 00 N7674_90CM 00 10 06 62.4 204.4 0.7 20.3 -23 1 9 10400 08 48 00 09 00 00 --- 00 22 08 61.3 210.3 0.9 25.0 697 F 1 15200 09 00 00 J2330+11 00 22 08 64.1 210.0 0.9 24.9 -24 1 9 15200 09 00 00 09 03 00 --- 00 25 09 63.8 211.5 0.9 26.1 156 F 1 16400 09 03 00 N7674_90CM 00 25 09 61.0 211.7 1.0 26.1 -24 1 10 16400 09 03 00 09 15 00 --- 00 37 11 59.6 217.0 1.2 30.2 696 R 1 14000 09 15 00 J2330+11 00 37 11 62.4 217.2 1.1 30.7 -24 1 10 14000 09 15 00 09 18 00 --- 00 40 11 62.0 218.6 1.2 31.7 156 R 1 12800 Schedule for VLA1 (Code Y ) Page 6 NGC7674 at 90 cm 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) ---------------------------------------------------------------------------------------- --- Sat 30 Aug 2003 Day 242 --- 09 18 00 N7674_90CM 00 40 11 59.2 218.2 1.2 31.2 -24 1 10 12800 09 18 00 09 30 00 --- 00 52 13 57.6 223.0 1.4 34.8 696 R 1 8000 09 30 00 J2330+11 00 52 13 60.4 223.7 1.4 35.6 -23 1 10 8000 09 30 00 09 33 00 --- 00 55 14 60.0 224.9 1.4 36.5 157 R 1 6800 09 33 00 N7674_90CM 00 55 14 57.1 224.1 1.5 35.6 -23 1 10 6800 09 33 00 09 45 00 --- 01 07 16 55.3 228.4 1.7 38.8 697 R 1 2000 09 45 00 J2330+11 01 07 16 58.1 229.4 1.6 39.8 -23 1 10 2000 09 45 00 09 48 00 --- 01 10 16 57.7 230.4 1.7 40.6 157 R 1 800 09 48 00 N7674_90CM 01 10 16 54.9 229.4 1.7 39.5 -23 1 11 800 09 48 00 10 00 00 --- 01 22 18 52.9 233.2 1.9 42.1 697 F 1 4000 10 00 00 J2330+11 01 22 18 55.7 234.4 1.9 43.4 -23 1 11 4000 10 00 00 10 03 00 --- 01 25 19 55.2 235.4 1.9 44.0 157 F 1 5200 10 05 00 3C454.3 01 27 19 51.3 252.1 2.6 55.2 80 1 11 5200 10 05 00 10 11 00 --- 01 33 20 50.1 253.4 2.7 55.8 360 F 1 7600 10 11 00 N7674_90CM 01 33 20 51.1 236.4 2.1 44.2 -41 1 11 7600 10 11 00 10 23 00 --- 01 45 22 49.0 239.7 2.3 46.3 679 F 1 12400 10 23 00 J2330+11 01 45 22 51.6 241.1 2.2 47.7 -23 1 11 12400 10 23 00 10 26 00 --- 01 48 22 51.1 241.9 2.3 48.1 157 F 1 13600 10 26 00 N7674_90CM 01 48 22 48.4 240.5 2.4 46.8 -23 1 12 13600 10 26 00 10 38 00 --- 02 00 24 46.2 243.4 2.6 48.5 697 R 1 16800 10 38 00 J2330+11 02 00 24 48.9 244.9 2.5 49.9 -23 1 12 16800 10 38 00 10 41 00 --- 02 03 25 48.3 245.7 2.5 50.3 157 R 1 15600 10 41 00 N7674_90CM 02 03 25 45.7 244.1 2.6 48.9 -23 1 12 15600 10 41 00 10 53 00 --- 02 15 27 43.4 246.8 2.8 50.3 697 R 1 10800 10 53 00 J2330+11 02 15 27 46.0 248.4 2.7 51.7 -23 1 12 10800 10 53 00 10 56 00 --- 02 18 27 45.4 249.0 2.8 52.0 157 R 1 9600 10 56 00 N7674_90CM 02 18 27 42.8 247.5 2.9 50.7 -23 1 12 9600 10 56 00 11 08 00 --- 02 30 29 40.5 250.0 3.1 51.9 697 R 1 4800 Schedule for VLA1 (Code Y ) Page 7 NGC7674 at 90 cm 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) ---------------------------------------------------------------------------------------- --- Sat 30 Aug 2003 Day 242 --- 11 08 00 J2330+11 02 30 29 43.1 251.6 3.0 53.2 -23 1 12 4800 11 08 00 11 11 00 --- 02 33 30 42.5 252.2 3.0 53.4 157 R 1 3600 11 11 00 N7674_90CM 02 33 30 39.9 250.6 3.1 52.2 -23 1 13 3600 11 11 00 11 23 00 --- 02 45 32 37.5 252.9 3.3 53.2 697 F 1 1200 11 23 00 J2330+11 02 45 32 40.1 254.5 3.2 54.4 -23 1 13 1200 11 23 00 11 26 00 --- 02 48 32 39.5 255.0 3.3 54.6 157 F 1 2400 11 26 00 N7674_90CM 02 48 32 36.9 253.4 3.4 53.4 -23 1 13 2400 11 26 00 11 38 00 --- 03 00 34 34.5 255.6 3.6 54.2 697 F 1 7200 11 38 00 J2330+11 03 00 34 37.1 257.2 3.5 55.4 -23 1 13 7200 11 38 00 11 41 00 --- 03 03 35 36.5 257.7 3.5 55.5 157 F 1 8400 11 41 00 N7674_90CM 03 03 35 33.9 256.1 3.6 54.4 -23 1 13 8400 11 41 00 11 53 00 --- 03 15 37 31.5 258.2 3.8 55.1 697 F 1 13200 11 53 00 J2330+11 03 15 37 34.0 259.7 3.7 56.1 -23 1 13 13200 11 53 00 11 56 00 --- 03 18 37 33.4 260.2 3.8 56.3 157 F 1 14400 11 58 00 N7674_90CM 03 20 37 30.5 259.0 3.9 55.3 96 1 14 14400 11 58 00 12 10 00 --- 03 32 39 28.0 260.9 4.1 55.8 720 R 1 16000 12 10 00 J2330+11 03 32 39 30.5 262.5 4.0 56.8 -23 1 14 16000 12 10 00 12 13 00 --- 03 35 40 29.9 262.9 4.1 56.9 157 R 1 14800 12 13 00 N7674_90CM 03 35 40 27.4 261.4 4.2 55.9 -23 1 14 14800 12 13 00 12 27 00 --- 03 49 42 24.5 263.5 4.4 56.3 817 R 1 9200 12 27 00 J2330+11 03 49 42 27.0 265.1 4.3 57.2 -22 1 14 9200 12 27 00 12 30 00 --- 03 52 43 26.4 265.5 4.4 57.3 158 R 1 8000 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bm193c.set Matches group y_vp in /home/filehost/cwalker/sched/catalogs/freq.dat In VA mode, only IFs A and D are phased. Setup group: 2 Station: VLA1 Total bit rate: 128 Format: VLBA1:2 Bits per sample: 2 Sample rate: 8.000 Number of channels: 8 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= -277.40 -277.40 -277.40 -277.40 -277.40 -277.40 -277.40 -277.40 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = A C A C A C A C The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 1 LO sum= 322.99 322.99 326.99 326.99 330.99 330.99 334.99 334.99 BBC fr= 600.39 600.39 604.39 604.39 608.39 608.39 612.39 612.39 Bandwd= 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 10 10 10 10 3010 3010 3010 3010 PCALFR2= 10 10 10 10 3010 3010 3010 3010 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto VLA specific information: (LO and FI cards not needed. Defaults shown.) VLABAND: VP VLABW: 1111 FEFILTER: 1111 VLAFEAB: 0.00 VLAFECD: 0.00 VLAIF: SYSPIF VLASYNA: -689.90 VLASYNB: -689.90 VLAROT: VLBPROT FLUKEA: 112.50 FLUKEB: 212.50 FLUKESET: 0 Details for VLA IFs: LO Sum Frequency span VLBI FIRSTLO VLA IF A: 322.6000 322.6000- 347.6000 -277.4000 VLA IF B: 322.6000 322.6000- 347.6000 -277.4000 VLA IF C: 322.6000 322.6000- 347.6000 -277.4000 VLA IF D: 322.6000 322.6000- 347.6000 -277.4000 With new digital patch panel, VLA IF = VLB IF. SOURCE LIST -- NGC7674 at 90 cm 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) * N7674_90CM 23 22 44.160850 * 23 25 16.400000 23 25 27.919986 08 12 53.08113 * 08 29 22.86000 08 30 35.95139 From catalog imbedded in main SCHED input file. J2253+1608 22 51 29.519733 * 22 53 57.747932 22 54 09.019375 2251+158 15 52 54.34806 * 16 08 53.56089 16 10 03.64719 * 3C454.3 /home/filehost/cwalker/sched/catalogs/sources.vlba J2253+16 ICRF - Ext.1 Source - 1998 IERS Annual Report J2330+1100 23 28 08.785993 * 23 30 40.852257 23 30 52.344700 2328+107 10 43 45.52211 * 11 00 18.70984 11 01 31.79916 * J2330+11 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 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) N7674_90CM 158.1 3C454.3 154.2 J2330+11 155.3 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