COVER INFORMATION Station: JODRELL2 (Code Jb ) Experiment: e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti Exp. Code: rg001b Schedule Version: 1.10 Processed by SCHED version: 8.10 Bug fixs and minor enhancements PI: Zsolt Paragi Address: JIVE Postbus 2 7990 AA Dwingeloo The Netherlands Phone: +31 (0)521 596 536 EMAIL: zparagi@jive.nl Fax: Phone during observation: +31 (0)521 596 500 Observing mode: Notes: ########################################################### ########## Please, make sure PHASE CAL is OFF. ############ ########################################################### Schedule for JODRELL2 (Code Jb ) Page 2 e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 10 Jun 2009 Day 161 --- ---------- ff ---------- Next scan frequencies: 22229.00 22229.00 22229.00 22229.00 22261.00 22261.00 22261.00 22261.00 Next BBC frequencies: 236.00 236.00 236.00 236.00 268.00 268.00 268.00 268.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 05 59 20 0420-014 23 05 01 5.1 99.1 -5.3 -36.2 0 1 1 0 05 59 20 06 14 20 --- 23 20 04 7.3 102.1 -5.1 -35.8 900 F 1 58 05 59 24 ---------- ff ---------- 06 15 00 0420-014 23 20 44 7.4 102.3 -5.1 -35.8 34 1 1 58 06 15 00 06 29 20 --- 23 35 06 9.5 105.2 -4.8 -35.3 860 F 1 114 06 15 04 ---------- ff ---------- 06 30 00 0420-014 23 35 46 9.6 105.4 -4.8 -35.3 34 1 1 114 06 30 00 06 44 20 --- 23 50 09 11.6 108.4 -4.6 -34.6 860 F 1 169 06 30 04 ---------- ff ---------- 06 45 00 0420-014 23 50 49 11.7 108.5 -4.5 -34.6 34 1 1 169 06 45 00 06 59 20 --- 00 05 11 13.8 111.6 -4.3 -33.8 860 F 1 225 06 45 04 ---------- ff ---------- 07 00 00 0420-014 00 05 51 13.9 111.7 -4.3 -33.8 34 1 1 225 07 00 00 07 14 20 --- 00 20 14 15.8 114.8 -4.1 -32.9 860 F 1 280 07 00 04 ---------- ff ---------- 10 34 20 0736+017 03 40 46 18.9 114.1 -4.0 -33.1 11974 1 1 280 10 34 20 10 49 20 --- 03 55 49 20.9 117.5 -3.7 -32.1 900 F 1 338 10 34 24 ---------- ff ---------- 10 50 00 0736+017 03 56 29 21.0 117.6 -3.7 -32.0 34 1 1 338 10 50 00 11 04 20 --- 04 10 51 22.9 120.9 -3.5 -30.9 860 F 1 394 10 50 04 Schedule for JODRELL2 (Code Jb ) Page 3 e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 10 Jun 2009 Day 161 --- ---------- ff-ampcal ---------- 11 05 20 0805-077 04 11 52 11.2 119.8 -3.9 -31.6 8 1 1 394 11 05 20 11 14 20 --- 04 20 53 12.3 121.8 -3.8 -30.9 540 F 1 428 11 05 24 11 15 20 J0948+0022 04 21 53 5.1 96.3 -5.5 -36.5 -28 1 1 428 11 15 20 11 24 20 =0946+006 04 30 55 6.4 98.1 -5.3 -36.3 512 F 1 463 11 15 24 11 25 00 J0948+0022 04 31 35 6.5 98.3 -5.3 -36.3 34 1 1 463 11 25 00 11 34 20 =0946+006 04 40 56 7.9 100.2 -5.1 -36.1 560 F 1 499 11 25 04 11 35 00 J0948+0022 04 41 36 8.0 100.3 -5.1 -36.1 34 1 1 499 11 35 00 11 44 20 =0946+006 04 50 58 9.4 102.2 -5.0 -35.8 560 F 1 535 11 35 04 11 45 00 J0948+0022 04 51 38 9.5 102.4 -5.0 -35.8 34 1 1 535 11 45 00 11 54 20 =0946+006 05 01 00 10.9 104.3 -4.8 -35.5 560 F 1 572 11 45 04 ---------- Ef pointing+flux measurement ---------- 11 54 20 J0948+0022 05 01 00 10.9 104.3 -4.8 -35.5 -2 1 1 572 No stop 12 04 20 =0946+006 05 11 01 12.3 106.4 -4.6 -35.0 598 F 1 610 11 54 24 12 05 00 J0948+0022 05 11 41 12.4 106.5 -4.6 -35.0 34 1 1 610 12 05 00 12 14 20 =0946+006 05 21 03 13.7 108.5 -4.5 -34.6 560 F 1 646 12 05 04 12 15 00 J0948+0022 05 21 43 13.8 108.6 -4.5 -34.6 34 1 1 646 12 15 00 12 24 20 =0946+006 05 31 05 15.2 110.6 -4.3 -34.1 560 F 1 683 12 15 04 12 25 00 J0948+0022 05 31 45 15.2 110.8 -4.3 -34.0 34 1 1 683 12 25 00 12 34 20 =0946+006 05 41 06 16.5 112.8 -4.1 -33.5 560 F 1 719 12 25 04 ---------- ff ---------- 12 35 20 1055+018 05 42 06 7.6 97.8 -5.3 -36.4 3 1 1 719 12 35 20 12 44 20 --- 05 51 08 9.0 99.6 -5.1 -36.2 540 F 1 754 12 35 24 12 44 20 J0948+0022 05 51 08 17.9 115.0 -4.0 -32.9 -58 1 1 754 No stop 12 54 20 =0946+006 06 01 09 19.3 117.2 -3.8 -32.2 542 F 1 792 12 44 24 12 55 50 J0948+0022 06 02 40 19.5 117.6 -3.8 -32.0 82 1 1 792 12 55 50 13 04 20 =0946+006 06 11 11 20.6 119.5 -3.6 -31.4 510 F 1 825 12 55 54 13 05 00 J0948+0022 06 11 51 20.7 119.7 -3.6 -31.3 34 1 1 825 13 05 00 13 14 20 =0946+006 06 21 13 21.9 121.8 -3.5 -30.6 560 F 1 861 13 05 04 Schedule for JODRELL2 (Code Jb ) Page 4 e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 10 Jun 2009 Day 161 --- ---------- ff ---------- 13 15 50 1055+018 06 22 43 13.6 106.1 -4.6 -35.1 31 1 1 861 13 15 50 13 19 20 --- 06 26 14 14.1 106.9 -4.5 -35.0 210 F 1 875 13 15 54 13 20 50 J0948+0022 06 27 44 22.7 123.3 -3.4 -30.0 29 1 1 875 13 20 50 13 29 20 =0946+006 06 36 15 23.8 125.3 -3.2 -29.2 510 F 1 908 13 20 54 13 30 00 J0948+0022 06 36 55 23.8 125.5 -3.2 -29.2 34 1 1 908 13 30 00 13 39 20 =0946+006 06 46 17 25.0 127.8 -3.1 -28.2 560 F 1 944 13 30 04 ---------- ff ---------- 13 40 50 1055+018 06 47 47 17.1 111.5 -4.2 -33.9 29 1 1 944 13 40 50 13 44 20 --- 06 51 18 17.6 112.3 -4.1 -33.7 210 F 1 957 13 40 54 13 45 50 J0948+0022 06 52 48 25.7 129.4 -2.9 -27.6 27 1 1 957 13 45 50 13 54 20 =0946+006 07 01 19 26.7 131.5 -2.8 -26.7 510 F 1 990 13 45 54 13 55 00 J0948+0022 07 01 59 26.8 131.6 -2.8 -26.6 34 1 1 990 13 55 00 14 04 20 =0946+006 07 11 21 27.8 134.0 -2.6 -25.5 560 F 1 1026 13 55 04 ---------- ff ---------- 14 05 50 1055+018 07 12 51 20.6 117.0 -3.8 -32.2 27 1 1 1026 14 05 50 14 09 20 --- 07 16 22 21.0 117.8 -3.7 -32.0 210 F 1 1040 14 05 54 ---------- Ef pointing+flux measurement ---------- 14 09 20 1055+018 07 16 22 21.0 117.8 -3.7 -32.0 -2 1 1 1040 No stop 14 19 20 --- 07 26 23 22.3 120.1 -3.5 -31.2 598 F 1 1079 14 09 24 14 21 20 J0948+0022 07 28 24 29.6 138.4 -2.4 -23.4 53 1 1 1079 14 21 20 14 29 20 =0946+006 07 36 25 30.3 140.6 -2.2 -22.4 480 F 1 1110 14 21 24 14 30 00 J0948+0022 07 37 05 30.4 140.7 -2.2 -22.3 33 1 1 1110 14 30 00 14 39 20 =0946+006 07 46 27 31.3 143.3 -2.1 -21.0 560 F 1 1146 14 30 04 ---------- ff-ampcal ---------- 14 41 20 0805-077 07 48 27 28.7 174.3 -0.3 -3.5 15 1 1 1146 14 41 20 14 44 20 --- 07 51 28 28.8 175.1 -0.3 -2.9 180 F 1 1157 14 41 24 Schedule for JODRELL2 (Code Jb ) Page 5 e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 10 Jun 2009 Day 161 --- 14 46 20 J0948+0022 07 53 28 31.9 145.2 -1.9 -20.0 18 1 1 1157 14 46 20 14 54 20 =0946+006 08 01 29 32.5 147.4 -1.8 -18.8 480 F 1 1188 14 46 24 14 55 00 J0948+0022 08 02 09 32.6 147.6 -1.8 -18.7 33 1 1 1188 14 55 00 15 04 20 =0946+006 08 11 31 33.3 150.3 -1.6 -17.3 560 F 1 1224 14 55 04 ---------- ff ---------- 15 06 20 1055+018 08 13 31 28.0 131.5 -2.8 -26.6 52 1 1 1224 15 06 20 15 09 20 --- 08 16 32 28.4 132.3 -2.7 -26.3 180 F 1 1236 15 06 24 15 11 20 J0948+0022 08 18 32 33.8 152.3 -1.5 -16.2 48 1 1 1236 15 11 20 15 19 20 =0946+006 08 26 33 34.4 154.6 -1.4 -14.9 480 F 1 1267 15 11 24 15 20 00 J0948+0022 08 27 13 34.4 154.8 -1.4 -14.8 33 1 1 1267 15 20 00 15 29 20 =0946+006 08 36 35 35.0 157.6 -1.2 -13.2 560 F 1 1303 15 20 04 ---------- Ef pointing+flux measurement ---------- 15 31 20 0805-077 08 38 35 28.6 188.4 0.5 5.1 16 1 1 1303 15 31 20 15 41 20 --- 08 48 37 28.3 191.2 0.7 6.8 600 F 1 1342 15 31 24 15 43 20 J0948+0022 08 50 37 35.7 161.8 -1.0 -10.8 20 1 1 1342 15 43 20 15 51 20 =0946+006 08 58 39 36.0 164.2 -0.8 -9.4 480 F 1 1373 15 43 24 15 52 00 J0948+0022 08 59 19 36.1 164.4 -0.8 -9.2 33 1 1 1373 15 52 00 16 01 20 =0946+006 09 08 40 36.4 167.3 -0.7 -7.6 560 F 1 1409 15 52 04 ---------- ff ---------- 16 03 20 1055+018 09 10 40 33.6 146.9 -1.8 -19.1 47 1 1 1409 16 03 20 16 06 20 --- 09 13 41 33.9 147.7 -1.8 -18.6 180 F 1 1421 16 03 24 16 08 20 J0948+0022 09 15 41 36.6 169.5 -0.6 -6.3 43 1 1 1421 16 08 20 16 16 20 =0946+006 09 23 43 36.8 172.0 -0.4 -4.8 480 F 1 1452 16 08 24 16 17 00 J0948+0022 09 24 23 36.8 172.2 -0.4 -4.7 33 1 1 1452 16 17 00 16 26 20 =0946+006 09 33 44 37.0 175.1 -0.3 -2.9 560 F 1 1488 16 17 04 ---------- ff-ampcal ---------- 16 28 20 0805-077 09 35 45 26.2 204.1 1.5 14.3 21 1 1 1488 16 28 20 16 31 20 --- 09 38 45 26.0 204.9 1.5 14.8 180 F 1 1499 16 28 24 Schedule for JODRELL2 (Code Jb ) Page 6 e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 10 Jun 2009 Day 161 --- 16 33 20 J0948+0022 09 40 45 37.1 177.3 -0.1 -1.6 25 1 1 1499 16 33 20 16 41 20 =0946+006 09 48 47 37.1 179.8 0.0 -0.1 480 F 1 1530 16 33 24 16 42 00 J0948+0022 09 49 27 37.1 180.0 0.0 0.0 33 1 1 1530 16 42 00 16 51 20 =0946+006 09 58 48 37.1 182.9 0.2 1.8 560 F 1 1566 16 42 04 ---------- ff ---------- 16 53 20 1055+018 10 00 49 36.9 161.7 -1.0 -10.8 45 1 1 1566 16 53 20 16 56 20 --- 10 03 49 37.0 162.6 -0.9 -10.3 180 F 1 1578 16 53 24 16 58 20 J0948+0022 10 05 50 37.0 185.1 0.3 3.1 41 1 1 1578 16 58 20 17 06 20 =0946+006 10 13 51 36.9 187.6 0.4 4.6 480 F 1 1609 16 58 24 17 07 00 J0948+0022 10 14 31 36.8 187.8 0.4 4.7 33 1 1 1609 17 07 00 17 17 00 =0946+006 10 24 33 36.6 191.0 0.6 6.5 600 F 1 1648 17 07 04 ---------- Ef pointing+flux measurement ---------- 17 17 40 J0948+0022 10 25 13 36.6 191.2 0.6 6.7 33 1 1 1648 17 17 40 17 27 00 =0946+006 10 34 34 36.3 194.0 0.8 8.4 560 F 1 1684 17 17 44 ---------- ff-ampcal ---------- 17 29 00 0805-077 10 36 35 21.3 219.8 2.5 22.7 31 1 1 1684 17 29 00 17 32 00 --- 10 39 35 21.0 220.5 2.5 23.1 180 F 1 1695 17 29 04 17 34 00 J0948+0022 10 41 35 36.0 196.2 0.9 9.6 35 1 1 1695 17 34 00 17 42 00 =0946+006 10 49 37 35.6 198.6 1.0 11.0 480 F 1 1726 17 34 04 17 42 40 J0948+0022 10 50 17 35.6 198.8 1.0 11.1 33 1 1 1726 17 42 40 17 52 00 =0946+006 10 59 38 35.1 201.6 1.2 12.7 560 F 1 1762 17 42 44 ---------- ff ---------- 17 54 00 1055+018 11 01 39 38.3 180.8 0.0 0.5 46 1 1 1762 17 54 00 17 57 00 --- 11 04 39 38.3 181.8 0.1 1.1 180 F 1 1774 17 54 04 Schedule for JODRELL2 (Code Jb ) Page 7 e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 10 Jun 2009 Day 161 --- ---------- Dummy scans ---------- Next scan frequencies: 22229.00 22229.00 22229.00 22229.00 Next BBC frequencies: 236.00 236.00 236.00 236.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 17 58 00 1055+018 11 05 39 38.3 182.1 0.1 1.3 52 1 1 1774 17 58 00 17 59 00 --- 11 06 39 38.3 182.4 0.1 1.5 60 F 1 1776 17 58 28 ---------- Dummy scans ---------- Next scan frequencies: 22229.00 22229.00 Next BBC frequencies: 236.00 236.00 Next scan bandwidths: 16.00 16.00 18 00 00 1055+018 11 07 40 38.2 182.8 0.1 1.7 52 1 1 1776 18 00 00 18 01 00 --- 11 08 40 38.2 183.1 0.2 1.8 60 F 1 1777 18 00 28 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: 512Mbps Matches group j2b1cm in ./freq.dat Setup group: 41 Station: JODRELL2 Total bit rate: 512 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 8 Speedup factor: 0.50 Disk used to record data. 1st LO= 21993.00 21993.00 21993.00 21993.00 21993.00 21993.00 21993.00 21993.00 Net SB= L L U U L L U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 2 1 4 3 4 3 BBC SB= L L U U L L U U IF = 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on this setup were used. Frequency Set: 11 Setup file default. LO sum= 22229.00 22229.00 22229.00 22229.00 22261.00 22261.00 22261.00 22261.00 BBC fr= 236.00 236.00 236.00 236.00 268.00 268.00 268.00 268.00 Bandwd= 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off Setup file: 256Mbps Matches group j2b1cm in ./freq.dat Setup group: 26 Station: JODRELL2 Total bit rate: 256 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 Speedup factor: 0.50 Disk used to record data. 1st LO= 21993.00 21993.00 21993.00 21993.00 Net SB= L L U U Pol. = RCP LCP RCP LCP BBC = 2 1 2 1 BBC SB= L L U U IF = 2N 1N 2N 1N The following frequency sets based on this setup were used. Frequency Set: 26 Setup file default. LO sum= 22229.00 22229.00 22229.00 22229.00 BBC fr= 236.00 236.00 236.00 236.00 Bandwd= 16.000 16.000 16.000 16.000 Track assignments are: track1= 2, 10, 18, 26 barrel=roll_off Setup file: 128Mbps Matches group j2b1cm in ./freq.dat Setup group: 11 Station: JODRELL2 Total bit rate: 128 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 2 Speedup factor: 0.50 Disk used to record data. 1st LO= 21993.00 21993.00 Net SB= L L Pol. = RCP LCP BBC = 2 1 BBC SB= L L IF = 2N 1N The following frequency sets based on this setup were used. Frequency Set: 41 Setup file default. LO sum= 22229.00 22229.00 BBC fr= 236.00 236.00 Bandwd= 16.000 16.000 Track assignments are: track1= 2, 10 barrel=roll_off SOURCE LIST -- e-EVN ToO: second epoch J0948+0022; PI Marcello Giroletti 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) J0423-0120 04 20 43.539851 * 04 23 15.800728 04 23 44.110507 0.20 * 0420-014 -01 27 28.70007 *-01 20 33.06537 -01 19 10.89699 0.30 J0423-01 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 3.117 scan hours, 109.282 baseline hours above horizon. J0739+0137 07 36 42.512339 * 07 39 18.033897 07 39 47.154485 0.30 * 0736+017 01 44 00.18089 * 01 37 04.61782 01 35 45.40831 0.21 J0739+01 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 0.489 scan hours, 32.085 baseline hours above horizon. J0808-0751 08 05 49.552837 * 08 08 15.536038 08 08 42.878271 0.21 * 0805-077 -07 42 22.40682 *-07 51 09.88640 -07 52 53.12241 0.32 J0808-07 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 0.700 scan hours, 28.491 baseline hours above horizon. * J0948+0022 09 46 23.258684 * 09 48 57.320118 09 49 26.735158 0.75 0946+006 00 36 25.20246 * 00 22 25.55966 00 19 42.59442 1.53 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 7.164 scan hours, 325.333 baseline hours above horizon. J1058+0133 10 55 55.313730 * 10 58 29.605208 10 58 59.468920 0.30 * 1055+018 01 50 03.53724 * 01 33 58.82374 01 30 51.12170 0.20 J1058+01 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 0.958 scan hours, 46.287 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) 0420-014 27.4 0736+017 41.1 0805-077 52.5 J0948+0022 70.2 1055+018 85.7 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