COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: BW085 / Lens J0134-0931 / Winn and Keeton Exp. Code: BW085 Schedule Version: 1.00 Processed by SCHED version: 6.02 July 2005 PI: Joshua N. Winn Address: Harvard-Smithsonian Center for Astrophysics 60 Garden St. MS-51 Cambridge, MA 02138 Phone: +1-617-384-9663 (w) / +1-617-666-2341 (h) EMAIL: jwinn@cfa.harvard.edu Fax: +1-617-495-7093 Phone during observation: +1-617-384-9663 (w) / +1-617-666-2341 (h) Observing mode: Standard 4cm band, 256-8-2 Notes: 256 Mbps has been approved for BW085 fringe finders: J2253+1608, J0555+3948 Schedule for GBT_VLBA (Code Gb ) Page 2 BW085 / Lens J0134-0931 / Winn and Keeton 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 30 Dec 2005 Day 364 --- Next scan frequencies: 8399.49 8399.49 8407.49 8407.49 8415.49 8415.49 8423.49 8423.49 Next BBC frequencies: 700.51 700.51 692.51 692.51 684.51 684.51 676.51 676.51 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 22 15 00 GL0134 23 33 26 34.3 142.9 -2.0 -28.7 0 1 1 0 Stopped 22 20 00 --- 23 38 27 34.9 144.2 -1.9 -27.7 300 S 1 0 ---------- GBT pointing and VLA phasing scan ---------- 22 20 00 GL0134 23 38 27 34.9 144.2 -1.9 -27.7 -20 1 1 0 Stopped 22 30 00 --- 23 48 29 36.0 146.9 -1.8 -25.7 580 S 1 0 22 30 00 GL0134 23 48 29 36.0 146.9 -1.8 -25.7 -20 1 1 0 22 30 00 22 39 00 --- 23 57 30 37.0 149.4 -1.6 -23.8 520 F 1 7200 22 30 08 22 39 00 J0141-0928 23 57 30 36.3 147.5 -1.7 -25.3 -32 1 1 7200 22 39 00 22 40 00 =0138-097 23 58 30 36.4 147.8 -1.7 -25.1 28 F 1 8000 22 39 00 22 40 00 GL0134 23 58 30 37.1 149.7 -1.6 -23.6 -32 1 1 8000 22 40 00 22 49 00 --- 00 07 32 37.9 152.3 -1.5 -21.7 508 F 1 15200 22 40 00 22 49 00 J0141-0928 00 07 32 37.3 150.3 -1.6 -23.2 -33 1 1 15200 22 49 00 22 50 00 =0138-097 00 08 32 37.4 150.6 -1.6 -23.0 27 F 1 16000 22 49 00 22 50 00 GL0134 00 08 32 38.0 152.6 -1.4 -21.5 -33 1 2 16000 22 50 00 22 59 00 --- 00 17 34 38.8 155.2 -1.3 -19.4 507 R 1 12000 22 50 00 22 59 00 J0141-0928 00 17 34 38.3 153.2 -1.4 -21.0 -33 1 2 12000 22 59 00 23 00 00 =0138-097 00 18 34 38.3 153.5 -1.4 -20.8 27 R 1 11200 22 59 00 23 00 00 GL0134 00 18 34 38.9 155.5 -1.3 -19.2 -33 1 2 11200 23 00 00 23 09 00 --- 00 27 35 39.6 158.3 -1.1 -17.1 507 R 1 4000 23 00 00 23 09 00 J0141-0928 00 27 35 39.1 156.2 -1.2 -18.7 -33 1 2 4000 23 09 00 23 10 00 =0138-097 00 28 35 39.2 156.5 -1.2 -18.5 27 R 1 3200 23 09 00 23 10 00 GL0134 00 28 35 39.6 158.6 -1.1 -16.9 -33 1 3 3200 23 10 00 23 19 00 --- 00 37 37 40.3 161.4 -1.0 -14.7 507 F 1 4000 23 10 00 Schedule for GBT_VLBA (Code Gb ) Page 3 BW085 / Lens J0134-0931 / Winn and Keeton 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 30 Dec 2005 Day 364 --- 23 19 00 J0141-0928 00 37 37 39.8 159.2 -1.1 -16.4 -33 1 3 4000 23 19 00 23 20 00 =0138-097 00 38 37 39.9 159.5 -1.1 -16.1 27 F 1 4800 23 19 00 23 20 00 GL0134 00 38 37 40.3 161.7 -0.9 -14.5 -33 1 3 4800 23 20 00 23 29 00 --- 00 47 38 40.8 164.5 -0.8 -12.2 507 F 1 12000 23 20 00 23 29 00 J0141-0928 00 47 38 40.5 162.3 -0.9 -13.9 -33 1 3 12000 23 29 00 23 30 00 =0138-097 00 48 39 40.5 162.7 -0.9 -13.7 27 F 1 12800 23 29 00 23 30 00 GL0134 00 48 39 40.9 164.8 -0.8 -12.0 -33 1 4 12800 23 30 00 23 39 00 --- 00 57 40 41.3 167.7 -0.6 -9.7 507 R 1 15200 23 30 00 23 39 00 J0141-0928 00 57 40 41.0 165.5 -0.7 -11.4 -33 1 4 15200 23 39 00 23 40 00 =0138-097 00 58 40 41.1 165.9 -0.7 -11.2 27 R 1 14400 23 39 00 23 40 00 GL0134 00 58 40 41.3 168.1 -0.6 -9.5 -33 1 4 14400 23 40 00 23 49 00 --- 01 07 42 41.7 171.0 -0.5 -7.1 507 R 1 7200 23 40 00 23 49 00 J0141-0928 01 07 42 41.5 168.8 -0.6 -8.9 -33 1 4 7200 23 49 00 23 50 00 =0138-097 01 08 42 41.5 169.1 -0.6 -8.6 27 R 1 6400 23 49 00 23 50 00 GL0134 01 08 42 41.7 171.3 -0.4 -6.9 -33 1 5 6400 23 50 00 23 59 00 --- 01 17 43 41.9 174.3 -0.3 -4.5 507 F 1 800 23 50 00 23 59 00 J0141-0928 01 17 43 41.8 172.0 -0.4 -6.3 -33 1 5 800 23 59 00 23 59 59 =0138-097 01 18 44 41.8 172.4 -0.4 -6.0 26 F 1 1600 23 59 00 --- Sat 31 Dec 2005 Day 365 --- 00 00 00 GL0134 01 18 44 41.9 174.6 -0.3 -4.3 -33 1 5 1600 00 00 00 00 09 00 --- 01 27 45 42.1 177.6 -0.1 -1.9 507 F 1 8800 00 00 08 00 09 00 J0141-0928 01 27 45 42.0 175.4 -0.2 -3.7 -33 1 5 8800 00 09 00 00 10 00 =0138-097 01 28 45 42.0 175.7 -0.2 -3.4 27 F 1 9600 00 09 00 00 12 00 J2253+1608 01 30 45 49.2 248.0 2.6 49.1 -33 1 5 9600 00 12 00 00 18 00 =2251+158 01 36 46 48.1 249.4 2.7 49.8 327 F 1 14400 00 12 08 00 18 00 GL0134 01 36 46 42.1 180.6 0.0 0.5 -147 1 6 14400 00 18 00 00 27 00 --- 01 45 48 42.0 183.6 0.2 2.9 393 R 1 13600 00 18 00 00 27 00 J0141-0928 01 45 48 42.1 181.4 0.1 1.1 -33 1 6 13600 00 27 00 00 28 00 =0138-097 01 46 48 42.1 181.7 0.1 1.3 27 R 1 12800 00 27 00 Schedule for GBT_VLBA (Code Gb ) Page 4 BW085 / Lens J0134-0931 / Winn and Keeton 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Sat 31 Dec 2005 Day 365 --- 00 28 00 GL0134 01 46 48 42.0 184.0 0.2 3.1 -33 1 6 12800 00 28 00 00 37 00 --- 01 55 50 41.8 186.9 0.3 5.5 507 R 1 5600 00 28 00 00 37 00 J0141-0928 01 55 50 42.0 184.7 0.2 3.7 -33 1 6 5600 00 37 00 00 38 00 =0138-097 01 56 50 42.0 185.0 0.3 4.0 27 R 1 4800 00 37 00 00 38 00 GL0134 01 56 50 41.8 187.3 0.4 5.8 -33 1 7 4800 00 38 00 00 47 00 --- 02 05 51 41.5 190.2 0.5 8.1 507 F 1 2400 00 38 00 00 47 00 J0141-0928 02 05 51 41.8 188.0 0.4 6.3 -33 1 7 2400 00 47 00 00 48 00 =0138-097 02 06 51 41.8 188.3 0.4 6.6 27 F 1 3200 00 47 00 00 48 00 GL0134 02 06 51 41.5 190.5 0.5 8.4 -33 1 7 3200 00 48 00 00 57 00 --- 02 15 53 41.1 193.5 0.7 10.7 507 F 1 10400 00 48 00 00 57 00 J0141-0928 02 15 53 41.5 191.3 0.6 8.9 -33 1 7 10400 00 57 00 00 58 00 =0138-097 02 16 53 41.4 191.6 0.6 9.2 27 F 1 11200 00 57 00 00 58 00 GL0134 02 16 53 41.1 193.8 0.7 10.9 -33 1 8 11200 00 58 00 01 07 00 --- 02 25 55 40.6 196.7 0.9 13.2 507 R 1 16800 00 58 00 01 07 00 J0141-0928 02 25 55 41.0 194.5 0.7 11.5 -33 1 8 16800 01 07 00 01 08 00 =0138-097 02 26 55 41.0 194.8 0.8 11.7 27 R 1 16000 01 07 00 01 08 00 GL0134 02 26 55 40.6 197.0 0.9 13.4 -33 1 8 16000 01 08 00 01 17 00 --- 02 35 56 40.0 199.8 1.0 15.6 507 R 1 8800 01 08 00 01 17 00 J0141-0928 02 35 56 40.5 197.7 0.9 14.0 -33 1 8 8800 01 17 00 01 18 00 =0138-097 02 36 56 40.4 198.0 0.9 14.2 27 R 1 8000 01 17 00 01 18 00 GL0134 02 36 56 39.9 200.1 1.0 15.9 -33 1 8 8000 01 18 00 01 27 00 --- 02 45 58 39.3 202.9 1.2 18.0 507 R 1 800 01 18 00 01 27 00 J0141-0928 02 45 58 39.8 200.8 1.1 16.4 -33 1 8 800 01 27 00 01 28 00 =0138-097 02 46 58 39.8 201.1 1.1 16.6 27 R 1 0 01 27 00 01 28 00 GL0134 02 46 58 39.2 203.2 1.2 18.2 -33 1 9 0 01 28 00 01 37 00 --- 02 55 59 38.5 205.9 1.4 20.3 507 F 1 7200 01 28 00 01 37 00 J0141-0928 02 55 59 39.1 203.9 1.2 18.7 -33 1 9 7200 01 37 00 01 38 00 =0138-097 02 57 00 39.0 204.2 1.3 19.0 27 F 1 8000 01 37 00 Schedule for GBT_VLBA (Code Gb ) Page 5 BW085 / Lens J0134-0931 / Winn and Keeton 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Sat 31 Dec 2005 Day 365 --- 01 38 00 GL0134 02 57 00 38.4 206.2 1.4 20.5 -33 1 9 8000 01 38 00 01 47 00 --- 03 06 01 37.6 208.8 1.5 22.5 507 F 1 15200 01 38 00 01 47 00 J0141-0928 03 06 01 38.2 206.8 1.4 21.0 -33 1 9 15200 01 47 00 01 48 00 =0138-097 03 07 01 38.2 207.1 1.4 21.2 27 F 1 16000 01 47 00 01 48 00 GL0134 03 07 01 37.5 209.1 1.5 22.7 -33 1 10 16000 01 48 00 01 57 00 --- 03 16 03 36.6 211.7 1.7 24.6 507 R 1 12000 01 48 00 01 57 00 J0141-0928 03 16 03 37.3 209.7 1.6 23.2 -32 1 10 12000 01 57 00 01 58 00 =0138-097 03 17 03 37.2 210.0 1.6 23.4 28 R 1 11200 01 57 00 01 58 00 GL0134 03 17 03 36.5 211.9 1.7 24.8 -32 1 10 11200 01 58 00 02 07 00 --- 03 26 04 35.5 214.4 1.9 26.7 508 R 1 4000 01 58 00 02 07 00 J0141-0928 03 26 04 36.3 212.6 1.7 25.3 -32 1 10 4000 02 07 00 02 08 00 =0138-097 03 27 05 36.2 212.8 1.8 25.5 28 R 1 3200 02 07 00 02 10 00 J0237+2848 03 29 05 75.7 231.5 0.8 44.4 -38 1 11 3200 02 10 00 02 16 00 =0234+285 03 35 06 74.8 235.1 0.9 47.2 322 F 1 1600 02 10 08 02 16 00 3C48 03 35 06 65.8 266.5 2.0 69.1 -84 1 11 1600 02 16 00 02 22 00 --- 03 41 07 64.6 267.6 2.1 69.3 276 F 1 6400 02 16 00 ---------- GBT pointing and VLA phasing scan ---------- 02 22 00 GL0134 03 41 07 33.8 218.4 2.1 29.5 -129 1 11 6400 Stopped 02 32 00 --- 03 51 08 32.5 220.9 2.3 31.4 471 S 1 6400 02 32 00 GL0134 03 51 08 32.5 220.9 2.3 31.4 -20 1 11 6400 02 32 00 02 41 00 --- 04 00 10 31.3 223.2 2.4 32.9 520 F 1 13600 02 32 08 02 41 00 J0141-0928 04 00 10 32.3 221.5 2.3 31.7 -31 1 11 13600 02 41 00 02 42 00 =0138-097 04 01 10 32.1 221.7 2.3 31.9 29 F 1 14400 02 41 00 02 42 00 GL0134 04 01 10 31.2 223.4 2.4 33.1 -31 1 12 14400 02 42 00 02 51 00 --- 04 10 12 30.0 225.5 2.6 34.5 509 R 1 13600 02 42 00 02 51 00 J0141-0928 04 10 12 30.9 223.9 2.5 33.4 -31 1 12 13600 02 51 00 02 52 00 =0138-097 04 11 12 30.8 224.2 2.5 33.6 29 R 1 12800 02 51 00 02 52 00 GL0134 04 11 12 29.8 225.8 2.6 34.7 -31 1 12 12800 02 52 00 03 01 00 --- 04 20 13 28.5 227.9 2.8 36.1 509 R 1 5600 02 52 00 Schedule for GBT_VLBA (Code Gb ) Page 6 BW085 / Lens J0134-0931 / Winn and Keeton 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Sat 31 Dec 2005 Day 365 --- 03 01 00 J0141-0928 04 20 13 29.5 226.3 2.6 35.0 -31 1 12 5600 03 01 00 03 02 00 =0138-097 04 21 13 29.4 226.5 2.7 35.2 29 R 1 4800 03 01 00 03 02 00 GL0134 04 21 13 28.4 228.1 2.8 36.2 -31 1 13 4800 03 02 00 03 11 00 --- 04 30 15 27.1 230.1 2.9 37.5 509 F 1 2400 03 02 00 03 11 00 J0141-0928 04 30 15 28.1 228.6 2.8 36.6 -31 1 13 2400 03 11 00 03 12 00 =0138-097 04 31 15 28.0 228.8 2.8 36.7 29 F 1 3200 03 11 00 03 12 00 GL0134 04 31 15 26.9 230.3 2.9 37.7 -31 1 13 3200 03 12 00 03 21 00 --- 04 40 17 25.5 232.3 3.1 38.9 509 F 1 10400 03 12 00 03 21 00 J0141-0928 04 40 17 26.6 230.8 3.0 38.0 -31 1 13 10400 03 21 00 03 22 00 =0138-097 04 41 17 26.5 231.0 3.0 38.1 29 F 1 11200 03 21 00 03 22 00 GL0134 04 41 17 25.4 232.5 3.1 39.0 -31 1 14 11200 03 22 00 03 31 00 --- 04 50 18 23.9 234.4 3.3 40.2 509 R 1 16800 03 22 00 03 31 00 J0141-0928 04 50 18 25.1 233.0 3.1 39.3 -31 1 14 16800 03 31 00 03 32 00 =0138-097 04 51 18 24.9 233.2 3.2 39.5 29 R 1 16000 03 31 00 03 32 00 GL0134 04 51 18 23.8 234.6 3.3 40.3 -31 1 14 16000 03 32 00 03 41 00 --- 05 00 20 22.3 236.4 3.4 41.4 509 R 1 8800 03 32 00 03 41 00 J0141-0928 05 00 20 23.5 235.0 3.3 40.6 -30 1 14 8800 03 41 00 03 42 00 =0138-097 05 01 20 23.3 235.2 3.3 40.7 30 R 1 8000 03 41 00 03 42 00 GL0134 05 01 20 22.2 236.6 3.4 41.5 -30 1 14 8000 03 42 00 03 51 00 --- 05 10 21 20.7 238.4 3.6 42.5 510 R 1 800 03 42 00 03 51 00 J0141-0928 05 10 21 21.8 237.1 3.5 41.8 -30 1 14 800 03 51 00 03 52 00 =0138-097 05 11 22 21.7 237.3 3.5 41.9 30 R 1 0 03 51 00 ----------- Tape Change ------------ 03 52 00 GL0134 05 11 22 20.5 238.6 3.6 42.7 -30 2 1 0 03 52 00 04 01 00 --- 05 20 23 19.0 240.3 3.8 43.6 510 F 1 7200 03 52 00 04 01 00 J0141-0928 05 20 23 20.2 239.0 3.6 42.9 -30 2 1 7200 04 01 00 04 02 00 =0138-097 05 21 23 20.0 239.2 3.7 43.0 30 F 1 8000 04 01 00 04 02 00 GL0134 05 21 23 18.8 240.5 3.8 43.7 -30 2 1 8000 04 02 00 04 11 00 --- 05 30 25 17.3 242.2 3.9 44.6 510 F 1 15200 04 02 00 Schedule for GBT_VLBA (Code Gb ) Page 7 BW085 / Lens J0134-0931 / Winn and Keeton 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Sat 31 Dec 2005 Day 365 --- 04 11 00 J0141-0928 05 30 25 18.5 240.9 3.8 43.9 -30 2 1 15200 04 11 00 04 12 00 =0138-097 05 31 25 18.3 241.1 3.8 44.0 30 F 1 16000 04 11 00 04 12 00 GL0134 05 31 25 17.1 242.3 3.9 44.7 -30 2 2 16000 04 12 00 04 15 00 --- 05 34 25 16.6 242.9 4.0 45.0 150 R 1 16800 04 12 00 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: vlba.4cm Matches group gbt4cmb in /home/arana/cwalker/sched/catalogs/freq.dat LO1=11.350, LO2=12.75, LO3=10.5 Setup group: 12 Station: GBT_VLBA Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape used at high density at 160.000 ips. Time per pass is 22.00 minutes. 1st LO= 9100.00 9100.00 9100.00 9100.00 9100.00 9100.00 9100.00 9100.00 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= L L L L L L L L IF = B D B D B D B D The following frequency sets based on this setup were used. Frequency Set: 11 Setup file default. Used pcal sets: 1 LO sum= 8399.49 8399.49 8407.49 8407.49 8415.49 8415.49 8423.49 8423.49 BBC fr= 700.51 700.51 692.51 692.51 684.51 684.51 676.51 676.51 Bandwd= 8.000 8.000 8.000 8.000 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 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- BW085 / Lens J0134-0931 / Winn and Keeton 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). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * GL0134 01 32 06.404241 * 01 34 35.666870 01 34 53.889532 0.00 -09 46 23.09567 *-09 31 02.86710 -09 29 14.88792 0.00 From catalog imbedded in main SCHED input file. 4.700 scan hours, 288.045 baseline hours above horizon. J0137+3309 01 34 49.826428 * 01 37 41.299494 01 38 01.882241 0.90 0134+329 32 54 20.25964 * 33 09 35.13382 33 11 37.02034 0.91 * 3C48 /home/arana/cwalker/sched/catalogs/sources.vlba J0137+33 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.100 scan hours, 4.946 baseline hours above horizon. * J0141-0928 01 38 56.858733 * 01 41 25.832165 01 41 44.059830 0.22 0138-097 -09 43 51.64872 *-09 28 43.67423 -09 26 56.90595 0.33 J0141-09 /home/arana/cwalker/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.516 scan hours, 25.273 baseline hours above horizon. * J0237+2848 02 34 55.589591 * 02 37 52.405678 02 38 14.073945 0.23 0234+285 28 35 11.40780 * 28 48 08.99005 28 49 53.77144 0.40 J0237+28 /home/arana/cwalker/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.100 scan hours, 6.484 baseline hours above horizon. * J2253+1608 22 51 29.519743 * 22 53 57.747942 22 54 14.634144 0.31 2251+158 15 52 54.34803 * 16 08 53.56086 16 10 49.58108 0.20 3C454.3 /home/arana/cwalker/sched/catalogs/sources.vlba J2253+16 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.100 scan hours, 6.491 baseline hours above horizon. 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) GL0134 98.4 3C48 113.8 J0141-0928 99.9 J0237+2848 125.7 J2253+1608 73.3 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