COVER INFORMATION Station: VLBA_HN (Code Hn ) 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 VLBA_HN (Code Hn ) 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: 822.99 822.99 826.99 826.99 830.99 830.99 834.99 834.99 Next scan bandwidths: 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 02 30 00 N7674_90CM 20 13 35 35.8 115.0 -3.2 -42.1 0 1 1 0 02 30 00 02 42 00 --- 20 25 37 37.8 117.8 -3.0 -40.9 720 F 1 4800 02 42 00 J2330+11 20 25 37 38.8 114.4 -3.1 -42.8 -8 1 1 4800 02 42 00 02 45 00 --- 20 28 37 39.3 115.1 -3.0 -42.5 172 F 1 6000 02 45 00 N7674_90CM 20 28 37 38.3 118.5 -2.9 -40.6 -8 1 1 6000 02 45 00 02 57 00 --- 20 40 39 40.2 121.5 -2.7 -39.2 712 F 1 10800 02 57 00 J2330+11 20 40 39 41.3 118.0 -2.8 -41.2 -8 1 1 10800 02 57 00 03 00 00 --- 20 43 40 41.8 118.7 -2.8 -40.9 172 F 1 12000 03 00 00 N7674_90CM 20 43 40 40.7 122.2 -2.7 -38.8 -8 1 1 12000 03 00 00 03 12 00 --- 20 55 42 42.5 125.3 -2.5 -37.1 712 F 1 16800 03 12 00 J2330+11 20 55 42 43.7 121.8 -2.6 -39.3 -8 1 2 16800 03 12 00 03 15 00 --- 20 58 42 44.1 122.6 -2.5 -38.9 172 R 1 17200 03 15 00 N7674_90CM 20 58 42 43.0 126.2 -2.4 -36.7 -8 1 2 17200 03 15 00 03 27 00 --- 21 10 44 44.7 129.5 -2.2 -34.8 712 R 1 12400 03 27 00 J2330+11 21 10 44 45.9 125.9 -2.3 -37.2 -9 1 2 12400 03 27 00 03 30 00 --- 21 13 45 46.4 126.7 -2.3 -36.7 171 R 1 11200 03 30 00 N7674_90CM 21 13 45 45.1 130.4 -2.2 -34.3 -9 1 2 11200 03 30 00 03 42 00 --- 21 25 46 46.7 133.9 -2.0 -32.2 711 R 1 6400 03 42 00 J2330+11 21 25 46 48.1 130.3 -2.1 -34.7 -9 1 2 6400 03 42 00 03 45 00 --- 21 28 47 48.5 131.2 -2.0 -34.2 171 R 1 5200 03 45 00 N7674_90CM 21 28 47 47.1 134.9 -1.9 -31.6 -9 1 2 5200 03 45 00 03 57 00 --- 21 40 49 48.7 138.7 -1.7 -29.3 711 R 1 400 03 57 00 J2330+11 21 40 49 50.1 135.0 -1.8 -31.9 -9 1 3 400 03 57 00 04 00 00 --- 21 43 49 50.5 136.0 -1.8 -31.2 171 F 1 1600 Schedule for VLBA_HN (Code Hn ) 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 21 43 49 49.0 139.7 -1.7 -28.6 -9 1 3 1600 04 00 00 04 12 00 --- 21 55 51 50.4 143.8 -1.5 -25.9 711 F 1 6400 04 12 00 J2330+11 21 55 51 52.0 140.0 -1.6 -28.6 -9 1 3 6400 04 12 00 04 15 00 --- 21 58 52 52.4 141.1 -1.5 -27.9 171 F 1 7600 04 17 00 N7674_90CM 22 00 52 50.9 145.5 -1.4 -24.8 111 1 3 7600 04 17 00 04 29 00 --- 22 12 54 52.1 149.9 -1.2 -21.8 720 F 1 12400 04 29 00 J2330+11 22 12 54 53.9 146.3 -1.3 -24.5 -10 1 3 12400 04 29 00 04 32 00 --- 22 15 55 54.2 147.4 -1.2 -23.7 170 F 1 13600 04 32 00 N7674_90CM 22 15 55 52.4 151.1 -1.2 -21.0 -10 1 4 13600 04 32 00 04 44 00 --- 22 27 57 53.3 155.7 -1.0 -17.7 710 R 1 16800 04 44 00 J2330+11 22 27 57 55.3 152.1 -1.0 -20.4 -10 1 4 16800 04 44 00 04 47 00 --- 22 30 57 55.5 153.4 -1.0 -19.5 170 R 1 15600 04 47 00 N7674_90CM 22 30 57 53.6 156.9 -0.9 -16.9 -10 1 4 15600 04 47 00 04 59 00 --- 22 42 59 54.3 161.8 -0.7 -13.4 710 R 1 10800 04 59 00 J2330+11 22 42 59 56.4 158.4 -0.8 -15.9 -10 1 4 10800 04 59 00 05 02 00 --- 22 46 00 56.6 159.7 -0.7 -15.0 170 R 1 9600 05 02 00 N7674_90CM 22 46 00 54.5 163.0 -0.7 -12.5 -10 1 4 9600 05 02 00 05 14 00 --- 22 58 02 55.1 168.1 -0.5 -8.8 710 R 1 4800 05 14 00 J2330+11 22 58 02 57.3 165.0 -0.5 -11.2 -10 1 4 4800 05 14 00 05 17 00 --- 23 01 02 57.4 166.3 -0.5 -10.2 170 R 1 3600 05 17 00 N7674_90CM 23 01 02 55.2 169.4 -0.4 -7.8 -11 1 5 3600 05 17 00 05 29 00 --- 23 13 04 55.5 174.6 -0.2 -4.0 709 F 1 1200 05 29 00 J2330+11 23 13 04 57.9 171.8 -0.3 -6.1 -11 1 5 1200 05 29 00 05 32 00 --- 23 16 05 57.9 173.2 -0.2 -5.1 169 F 1 2400 05 32 00 N7674_90CM 23 16 05 55.5 175.9 -0.2 -3.0 -11 1 5 2400 05 32 00 05 44 00 --- 23 28 07 55.6 181.2 0.0 0.9 709 F 1 7200 05 44 00 J2330+11 23 28 07 58.1 178.7 0.0 -1.0 -11 1 5 7200 05 44 00 05 47 00 --- 23 31 07 58.1 180.1 0.0 0.1 169 F 1 8400 Schedule for VLBA_HN (Code Hn ) 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 23 31 07 55.6 182.5 0.1 1.8 -11 1 5 8400 05 47 00 05 59 00 --- 23 43 09 55.4 187.7 0.3 5.7 709 F 1 13200 05 59 00 J2330+11 23 43 09 58.0 185.7 0.2 4.2 -11 1 5 13200 05 59 00 06 02 00 --- 23 46 09 57.9 187.1 0.3 5.3 169 F 1 14400 06 02 00 N7674_90CM 23 46 09 55.3 189.0 0.3 6.7 -11 1 6 14400 06 02 00 06 14 00 --- 23 58 11 54.8 194.1 0.5 10.4 709 R 1 16000 06 14 00 J2330+11 23 58 11 57.5 192.6 0.5 9.3 -11 1 6 16000 06 14 00 06 17 00 --- 00 01 12 57.4 193.9 0.5 10.3 169 R 1 14800 06 19 00 3C454.3 00 03 12 59.4 214.1 1.2 25.3 101 1 6 14800 06 19 00 06 25 00 --- 00 09 13 58.8 216.6 1.3 27.1 360 R 1 12400 06 25 00 N7674_90CM 00 09 13 54.3 198.7 0.7 13.8 -18 1 6 12400 06 25 00 06 37 00 --- 00 21 15 53.5 203.6 0.9 17.2 702 R 1 7600 06 37 00 J2330+11 00 21 15 56.3 202.7 0.8 16.7 -12 1 6 7600 06 37 00 06 40 00 --- 00 24 16 56.0 203.9 0.9 17.6 168 R 1 6400 06 40 00 N7674_90CM 00 24 16 53.2 204.8 1.0 18.1 -12 1 6 6400 06 40 00 06 52 00 --- 00 36 18 52.2 209.4 1.2 21.3 708 R 1 1600 06 52 00 J2330+11 00 36 18 55.1 208.9 1.1 21.1 -12 1 6 1600 06 52 00 06 55 00 --- 00 39 18 54.8 210.1 1.1 21.9 168 R 1 400 06 55 00 N7674_90CM 00 39 18 52.0 210.5 1.2 22.1 -12 1 7 400 06 55 00 07 07 00 --- 00 51 20 50.8 214.9 1.4 25.1 708 F 1 5200 07 07 00 J2330+11 00 51 20 53.6 214.7 1.3 25.1 -12 1 7 5200 07 07 00 07 10 00 --- 00 54 21 53.3 215.8 1.4 25.9 168 F 1 6400 07 10 00 N7674_90CM 00 54 21 50.5 216.0 1.5 25.8 -12 1 7 6400 07 10 00 07 22 00 --- 01 06 23 49.1 220.1 1.7 28.5 708 F 1 11200 07 22 00 J2330+11 01 06 23 51.9 220.1 1.6 28.7 -12 1 7 11200 07 22 00 07 25 00 --- 01 09 23 51.6 221.2 1.6 29.4 168 F 1 12400 07 25 00 N7674_90CM 01 09 23 48.7 221.1 1.7 29.1 -12 1 7 12400 07 25 00 07 37 00 --- 01 21 25 47.2 224.9 1.9 31.5 708 F 1 17200 Schedule for VLBA_HN (Code Hn ) 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 01 21 25 50.1 225.2 1.8 32.0 -12 1 8 17200 07 37 00 07 40 00 --- 01 24 26 49.7 226.2 1.9 32.5 168 R 1 16000 07 40 00 N7674_90CM 01 24 26 46.8 225.8 2.0 32.1 -12 1 8 16000 07 40 00 07 52 00 --- 01 36 28 45.2 229.4 2.2 34.2 708 R 1 11200 07 52 00 J2330+11 01 36 28 48.0 229.9 2.1 34.8 -12 1 8 11200 07 52 00 07 55 00 --- 01 39 28 47.6 230.8 2.1 35.3 168 R 1 10000 07 55 00 N7674_90CM 01 39 28 44.8 230.3 2.2 34.7 -12 1 8 10000 07 55 00 08 07 00 --- 01 51 30 43.1 233.6 2.4 36.6 708 R 1 5200 08 07 00 J2330+11 01 51 30 45.9 234.3 2.3 37.3 -12 1 8 5200 08 07 00 08 10 00 --- 01 54 31 45.4 235.1 2.4 37.7 168 R 1 4000 08 12 00 3C454.3 01 56 31 43.0 249.7 3.0 45.6 104 1 8 4000 08 12 00 08 18 00 --- 02 02 32 41.9 251.1 3.1 46.1 360 R 1 1600 08 18 00 N7674_90CM 02 02 32 41.4 236.6 2.6 38.2 -16 1 9 1600 08 18 00 08 30 00 --- 02 14 34 39.5 239.6 2.8 39.7 704 F 1 3200 08 30 00 J2330+11 02 14 34 42.3 240.4 2.7 40.4 -12 1 9 3200 08 30 00 08 33 00 --- 02 17 34 41.8 241.2 2.8 40.8 168 F 1 4400 08 33 00 N7674_90CM 02 17 34 39.1 240.4 2.9 40.0 -12 1 9 4400 08 33 00 08 45 00 --- 02 29 36 37.1 243.2 3.1 41.4 708 F 1 9200 08 45 00 J2330+11 02 29 36 39.9 244.1 3.0 42.1 -12 1 9 9200 08 45 00 08 48 00 --- 02 32 37 39.4 244.8 3.0 42.4 168 F 1 10400 08 48 00 N7674_90CM 02 32 37 36.6 243.9 3.1 41.7 -12 1 9 10400 08 48 00 09 00 00 --- 02 44 39 34.6 246.6 3.3 42.8 708 F 1 15200 09 00 00 J2330+11 02 44 39 37.4 247.5 3.2 43.6 -11 1 9 15200 09 00 00 09 03 00 --- 02 47 39 36.9 248.2 3.3 43.8 169 F 1 16400 09 03 00 N7674_90CM 02 47 39 34.1 247.3 3.4 43.1 -11 1 10 16400 09 03 00 09 15 00 --- 02 59 41 32.1 249.9 3.6 44.0 709 R 1 14000 09 15 00 J2330+11 02 59 41 34.8 250.8 3.5 44.8 -11 1 10 14000 09 15 00 09 18 00 --- 03 02 42 34.3 251.5 3.5 45.0 169 R 1 12800 Schedule for VLBA_HN (Code Hn ) 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 03 02 42 31.6 250.5 3.6 44.2 -11 1 10 12800 09 18 00 09 30 00 --- 03 14 44 29.5 252.9 3.8 45.0 709 R 1 8000 09 30 00 J2330+11 03 14 44 32.2 253.9 3.7 45.8 -11 1 10 8000 09 30 00 09 33 00 --- 03 17 44 31.6 254.5 3.8 46.0 169 R 1 6800 09 33 00 N7674_90CM 03 17 44 28.9 253.5 3.9 45.2 -11 1 10 6800 09 33 00 09 45 00 --- 03 29 46 26.8 255.9 4.1 45.9 709 R 1 2000 09 45 00 J2330+11 03 29 46 29.5 256.9 4.0 46.6 -11 1 10 2000 09 45 00 09 48 00 --- 03 32 47 29.0 257.5 4.0 46.7 169 R 1 800 09 48 00 N7674_90CM 03 32 47 26.3 256.5 4.1 46.0 -11 1 11 800 09 48 00 10 00 00 --- 03 44 49 24.1 258.7 4.3 46.6 709 F 1 4000 10 00 00 J2330+11 03 44 49 26.8 259.8 4.2 47.2 -11 1 11 4000 10 00 00 10 03 00 --- 03 47 49 26.3 260.3 4.3 47.3 169 F 1 5200 10 05 00 3C454.3 03 49 49 22.6 271.4 4.9 49.6 107 1 11 5200 10 05 00 10 11 00 --- 03 55 50 21.5 272.4 5.0 49.6 360 F 1 7600 10 11 00 N7674_90CM 03 55 50 22.1 260.8 4.5 46.9 -14 1 11 7600 10 11 00 10 23 00 --- 04 07 52 20.0 262.9 4.7 47.3 706 F 1 12400 10 23 00 J2330+11 04 07 52 22.6 264.0 4.6 47.9 -11 1 11 12400 10 23 00 10 26 00 --- 04 10 53 22.1 264.5 4.7 47.9 169 F 1 13600 10 26 00 N7674_90CM 04 10 53 19.4 263.5 4.8 47.4 -11 1 12 13600 10 26 00 10 38 00 --- 04 22 55 17.2 265.6 5.0 47.6 709 R 1 16800 10 38 00 J2330+11 04 22 55 19.9 266.6 4.9 48.1 -11 1 12 16800 10 38 00 10 41 00 --- 04 25 55 19.3 267.1 4.9 48.2 169 R 1 15600 10 41 00 N7674_90CM 04 25 55 16.7 266.1 5.0 47.6 -11 1 12 15600 10 41 00 10 53 00 --- 04 37 57 14.5 268.2 5.2 47.7 709 R 1 10800 10 53 00 J2330+11 04 37 57 17.1 269.2 5.1 48.2 -11 1 12 10800 10 53 00 10 56 00 --- 04 40 58 16.6 269.7 5.2 48.2 169 R 1 9600 10 56 00 N7674_90CM 04 40 58 13.9 268.7 5.3 47.7 -11 1 12 9600 10 56 00 11 08 00 --- 04 53 00 11.7 270.8 5.5 47.8 709 R 1 4800 Schedule for VLBA_HN (Code Hn ) 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 04 53 00 14.4 271.8 5.4 48.2 -11 1 12 4800 11 08 00 11 11 00 --- 04 56 00 13.8 272.3 5.4 48.2 169 R 1 3600 11 11 00 N7674_90CM 04 56 00 11.2 271.3 5.5 47.7 -11 1 13 3600 11 11 00 11 23 00 --- 05 08 02 9.0 273.3 5.7 47.7 709 F 1 1200 11 23 00 J2330+11 05 08 02 11.6 274.3 5.6 48.1 -11 1 13 1200 11 23 00 11 26 00 --- 05 11 03 11.1 274.8 5.7 48.0 169 F 1 2400 11 26 00 N7674_90CM 05 11 03 8.4 273.8 5.8 47.6 -11 1 13 2400 11 26 00 11 38 00 --- 05 23 05 6.2 275.9 6.0 47.4 709 F 1 7200 11 38 00 J2330+11 05 23 05 8.9 276.8 5.9 47.8 -11 1 13 7200 11 38 00 11 41 00 --- 05 26 05 8.4 277.3 5.9 47.7 169 F 1 8400 11 41 00 N7674_90CM 05 26 05 5.7 276.4 6.0 47.4 -11 1 13 8400 11 41 00 11 53 00 --- 05 38 07 3.5 278.4 6.2 H 47.1 0 F 1 13200 11 53 00 J2330+11 05 38 07 6.2 279.3 6.1 47.4 -11 1 13 13200 11 53 00 11 56 00 --- 05 41 08 5.6 279.8 6.2 47.3 169 F 1 14400 11 58 00 N7674_90CM 05 43 08 2.6 279.2 6.3 H 46.9 108 1 14 14400 11 58 00 12 10 00 --- 05 55 10 0.4 281.3 6.5 D 46.6 0 R 1 16000 12 10 00 J2330+11 05 55 10 3.1 282.2 6.4 H 46.8 -8 1 14 16000 12 10 00 12 13 00 --- 05 58 10 2.6 282.7 6.5 H 46.7 0 R 1 14800 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 v5090n in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA 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= -500.00 -500.00 -500.00 -500.00 -500.00 -500.00 -500.00 -500.00 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 = B D B D B D B D VLBA FE= omit 90cm omit 90cm VLBA Synth= 15.4 15.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 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= 822.99 822.99 826.99 826.99 830.99 830.99 834.99 834.99 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 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