COVER INFORMATION Station: SHANGHAI (Code Sh ) Experiment: e-EVN ToO: third epoch J0948+0022; PI Marcello Giroletti Exp. Code: rg001c Schedule Version: 1.00 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 SHANGHAI (Code Sh ) Page 2 e-EVN ToO: third 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 ---------------------------------------------------------------------------------------- --- Sat 4 Jul 2009 Day 185 --- ---------- ff ---------- Next scan frequencies: 22229.00 22229.00 22229.00 22229.00 22261.00 22261.00 22261.00 22261.00 Next BBC frequencies: 629.00 629.00 629.00 629.00 661.00 661.00 661.00 661.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 03 00 00 1055+018 05 53 50 12.5 95.9 -5.1 -58.4 0 1 1 0 03 00 00 03 14 20 --- 06 08 12 15.6 97.8 -4.8 -58.1 860 F 1 55 03 00 01 ---------- ff ---------- 03 15 00 1055+018 06 08 52 15.7 97.9 -4.8 -58.0 38 1 1 55 03 15 00 03 29 20 --- 06 23 15 18.7 99.9 -4.6 -57.5 860 F 1 111 03 15 01 ---------- ff ---------- 03 30 00 1055+018 06 23 55 18.9 100.0 -4.6 -57.5 38 1 1 111 03 30 00 03 44 20 --- 06 38 17 21.9 102.1 -4.3 -56.9 860 F 1 166 03 30 01 ---------- ff ---------- 03 45 00 1055+018 06 38 57 22.0 102.2 -4.3 -56.9 38 1 1 166 03 45 00 03 59 20 --- 06 53 20 25.0 104.3 -4.1 -56.1 860 F 1 222 03 45 01 ---------- ff ---------- 04 00 00 1055+018 06 54 00 25.2 104.4 -4.1 -56.0 38 1 1 222 04 00 00 04 14 20 --- 07 08 22 28.1 106.7 -3.8 -55.1 860 F 1 277 04 00 01 ---------- ff ---------- 04 15 00 1055+018 07 09 02 28.3 106.8 -3.8 -55.1 38 1 1 277 04 15 00 04 29 20 --- 07 23 25 31.2 109.2 -3.6 -54.0 860 F 1 333 04 15 01 ---------- ff ---------- 04 30 00 1055+018 07 24 05 31.3 109.3 -3.6 -53.9 38 1 1 333 04 30 00 04 44 20 --- 07 38 27 34.2 111.9 -3.3 -52.6 860 F 1 388 04 30 01 Schedule for SHANGHAI (Code Sh ) Page 3 e-EVN ToO: third 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 ---------------------------------------------------------------------------------------- --- Sat 4 Jul 2009 Day 185 --- ---------- ff ---------- 04 45 00 1055+018 07 39 07 34.3 112.0 -3.3 -52.6 38 1 1 388 04 45 00 04 59 20 --- 07 53 30 37.2 114.8 -3.1 -51.1 860 F 1 444 04 45 01 ---------- ff ---------- 04 59 20 0736+017 07 53 30 60.3 186.9 0.2 5.9 -74 1 1 444 No stop 05 13 20 --- 08 07 32 59.8 193.9 0.5 11.9 766 F 1 498 04 59 21 05 14 50 J0948+0022 08 09 02 51.1 137.5 -1.7 -35.4 32 1 1 498 05 14 50 05 23 20 =0946+006 08 17 34 52.3 140.3 -1.5 -33.1 510 F 1 531 05 14 51 05 24 00 J0948+0022 08 18 14 52.4 140.6 -1.5 -33.0 38 1 1 531 05 24 00 05 33 20 =0946+006 08 27 35 53.6 143.9 -1.4 -30.3 560 F 1 567 05 24 01 ---------- ff-ampcal ---------- 05 34 50 0805-077 08 29 05 50.7 188.0 0.3 6.9 44 1 1 567 05 34 50 05 38 20 --- 08 32 36 50.6 189.3 0.4 8.1 210 F 1 581 05 34 51 05 39 50 J0948+0022 08 34 06 54.4 146.3 -1.3 -28.4 45 1 1 581 05 39 50 05 48 20 =0946+006 08 42 38 55.4 149.6 -1.1 -25.7 510 F 1 614 05 39 51 05 49 00 J0948+0022 08 43 18 55.5 149.9 -1.1 -25.5 38 1 1 614 05 49 00 05 58 20 =0946+006 08 52 39 56.4 153.7 -0.9 -22.3 560 F 1 650 05 49 01 ---------- ff ---------- 05 59 50 1055+018 08 54 10 48.2 129.0 -2.1 -41.8 63 1 1 650 05 59 50 06 03 20 --- 08 57 40 48.8 130.0 -2.0 -41.0 210 F 1 663 05 59 51 06 04 50 J0948+0022 08 59 10 57.0 156.4 -0.8 -20.0 62 1 1 663 06 04 50 06 13 20 =0946+006 09 07 42 57.7 160.2 -0.7 -16.9 510 F 1 696 06 04 51 06 14 00 J0948+0022 09 08 22 57.7 160.5 -0.7 -16.6 38 1 1 696 06 14 00 06 23 20 =0946+006 09 17 43 58.3 164.8 -0.5 -13.0 560 F 1 732 06 14 01 ---------- ff-ampcal ---------- 06 24 50 0805-077 09 19 14 47.5 206.4 1.2 22.6 46 1 1 732 06 24 50 06 28 20 --- 09 22 44 47.2 207.6 1.2 23.6 210 F 1 746 06 24 51 Schedule for SHANGHAI (Code Sh ) Page 4 e-EVN ToO: third 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 ---------------------------------------------------------------------------------------- --- Sat 4 Jul 2009 Day 185 --- 06 29 50 J0948+0022 09 24 14 58.7 167.8 -0.4 -10.4 48 1 1 746 06 29 50 06 38 20 =0946+006 09 32 46 59.0 171.9 -0.3 -6.9 510 F 1 779 06 29 51 06 39 00 J0948+0022 09 33 26 59.0 172.2 -0.3 -6.7 38 1 1 779 06 39 00 06 48 20 =0946+006 09 42 48 59.2 176.8 -0.1 -2.8 560 F 1 815 06 39 01 ---------- ff ---------- 06 49 50 1055+018 09 44 18 55.5 145.5 -1.2 -29.0 57 1 1 815 06 49 50 06 53 20 --- 09 47 48 56.0 146.9 -1.2 -27.9 210 F 1 828 06 49 51 06 54 50 J0948+0022 09 49 19 59.2 179.9 0.0 -0.1 55 1 1 828 06 54 50 07 03 20 =0946+006 09 57 50 59.2 184.1 0.1 3.5 510 F 1 861 06 54 51 07 04 00 J0948+0022 09 58 30 59.2 184.4 0.2 3.8 38 1 1 861 07 04 00 07 13 20 =0946+006 10 07 52 58.9 188.9 0.3 7.7 560 F 1 897 07 04 01 ---------- ff-ampcal ---------- 07 14 50 0805-077 10 09 22 41.5 221.6 2.0 35.1 55 1 1 897 07 14 50 07 18 20 --- 10 12 52 41.0 222.6 2.1 35.8 210 F 1 911 07 14 51 07 19 50 J0948+0022 10 14 23 58.7 192.1 0.4 10.3 57 1 1 911 07 19 50 07 28 20 =0946+006 10 22 54 58.2 196.0 0.6 13.7 510 F 1 944 07 19 51 07 29 00 J0948+0022 10 23 34 58.2 196.3 0.6 13.9 38 1 1 944 07 29 00 07 38 20 =0946+006 10 32 56 57.5 200.6 0.7 17.5 560 F 1 980 07 29 01 ---------- ff ---------- 07 39 50 1055+018 10 34 26 59.9 167.7 -0.4 -10.5 55 1 1 980 07 39 50 07 43 20 --- 10 37 57 60.0 169.4 -0.4 -9.0 210 F 1 993 07 39 51 07 44 50 J0948+0022 10 39 27 57.0 203.4 0.8 19.9 54 1 1 993 07 44 50 07 53 20 =0946+006 10 47 58 56.2 207.0 1.0 22.9 510 F 1 1026 07 44 51 07 54 00 J0948+0022 10 48 38 56.2 207.3 1.0 23.1 38 1 1 1026 07 54 00 08 00 00 =0946+006 10 54 39 55.6 209.8 1.1 25.2 360 F 1 1050 07 54 01 ---------- ff ---------- 08 00 00 1055+018 10 54 39 60.4 177.8 -0.1 -1.9 -34 1 1 1050 No stop 08 15 00 --- 11 09 42 60.3 185.4 0.2 4.6 866 F 1 1108 08 00 01 Schedule for SHANGHAI (Code Sh ) Page 5 e-EVN ToO: third 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 ---------------------------------------------------------------------------------------- --- Sat 4 Jul 2009 Day 185 --- ---------- ff ---------- 08 15 40 1055+018 11 10 22 60.3 185.7 0.2 4.9 38 1 1 1108 08 15 40 08 30 00 --- 11 24 44 59.8 192.9 0.4 11.0 860 F 1 1163 08 15 41 ---------- ff ---------- 08 30 40 1055+018 11 25 24 59.8 193.2 0.4 11.3 38 1 1 1163 08 30 40 08 45 00 --- 11 39 47 58.9 200.0 0.7 17.1 860 F 1 1219 08 30 41 ---------- ff ---------- 08 45 40 1055+018 11 40 27 58.8 200.3 0.7 17.3 38 1 1 1219 08 45 40 09 00 00 --- 11 54 49 57.6 206.7 0.9 22.7 860 F 1 1274 08 45 41 ---------- ff ---------- 09 00 00 OJ287 11 54 49 48.4 265.7 3.0 65.4 -61 1 1 1274 No stop 09 15 00 --- 12 09 52 45.1 267.8 3.2 65.6 839 F 1 1332 09 00 01 ---------- ff ---------- 09 15 40 OJ287 12 10 32 45.0 267.9 3.3 65.7 38 1 1 1332 09 15 40 09 30 00 --- 12 24 54 41.9 269.8 3.5 65.7 860 F 1 1388 09 15 41 ---------- ff ---------- 09 30 40 OJ287 12 25 34 41.8 269.9 3.5 65.7 38 1 1 1388 09 30 40 09 45 00 --- 12 39 57 38.7 271.7 3.7 65.7 860 F 1 1443 09 30 41 ---------- ff ---------- 09 45 40 OJ287 12 40 37 38.6 271.8 3.8 65.7 38 1 1 1443 09 45 40 10 00 00 --- 12 54 59 35.5 273.6 4.0 65.5 860 F 1 1499 09 45 41 10 02 00 J0948+0022 12 56 59 36.0 244.5 3.1 50.6 89 1 1 1499 10 02 00 10 10 00 =0946+006 13 05 01 34.5 246.0 3.3 51.5 480 F 1 1530 10 02 01 10 10 40 J0948+0022 13 05 41 34.3 246.2 3.3 51.6 38 1 1 1530 10 10 40 10 20 00 =0946+006 13 15 02 32.5 247.9 3.4 52.5 560 F 1 1566 10 10 41 10 20 40 J0948+0022 13 15 42 32.4 248.0 3.4 52.6 38 1 1 1566 10 20 40 10 30 00 =0946+006 13 25 04 30.5 249.7 3.6 53.4 560 F 1 1602 10 20 41 Schedule for SHANGHAI (Code Sh ) Page 6 e-EVN ToO: third 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 ---------------------------------------------------------------------------------------- --- Sat 4 Jul 2009 Day 185 --- 10 30 40 J0948+0022 13 25 44 30.4 249.8 3.6 53.5 38 1 1 1602 10 30 40 10 40 00 =0946+006 13 35 06 28.5 251.4 3.8 54.2 560 F 1 1638 10 30 41 10 40 40 J0948+0022 13 35 46 28.3 251.5 3.8 54.3 38 1 1 1638 10 40 40 10 50 00 =0946+006 13 45 07 26.4 253.0 3.9 55.0 560 F 1 1674 10 40 41 10 50 40 J0948+0022 13 45 47 26.3 253.1 3.9 55.0 38 1 1 1674 10 50 40 11 00 00 =0946+006 13 55 09 24.4 254.6 4.1 55.6 560 F 1 1710 10 50 41 11 00 40 J0948+0022 13 55 49 24.2 254.7 4.1 55.7 38 1 1 1710 11 00 40 11 10 00 =0946+006 14 05 10 22.3 256.1 4.3 56.2 560 F 1 1746 11 00 41 11 10 40 J0948+0022 14 05 51 22.1 256.2 4.3 56.3 38 1 1 1746 11 10 40 11 20 00 =0946+006 14 15 12 20.2 257.6 4.4 56.8 560 F 1 1782 11 10 41 11 20 40 J0948+0022 14 15 52 20.1 257.7 4.4 56.8 38 1 1 1782 11 20 40 11 30 00 =0946+006 14 25 14 18.1 259.0 4.6 57.2 560 F 1 1819 11 20 41 ---------- ff ---------- 11 31 30 1055+018 14 26 44 32.8 249.4 3.5 53.3 64 1 1 1819 11 31 30 11 35 00 --- 14 30 15 32.1 250.0 3.5 53.6 210 F 1 1832 11 31 31 11 35 40 J0948+0022 14 30 55 16.9 259.8 4.7 57.4 13 1 1 1832 11 35 40 11 45 00 =0946+006 14 40 16 14.9 261.2 4.8 57.8 560 F 1 1868 11 35 41 11 45 40 J0948+0022 14 40 56 14.8 261.2 4.9 57.8 38 1 1 1868 11 45 40 11 55 00 =0946+006 14 50 18 12.8 262.5 5.0 58.1 560 F 1 1904 11 45 41 ---------- Dummy scans ---------- Next scan frequencies: 22229.00 22229.00 22229.00 22229.00 Next BBC frequencies: 629.00 629.00 629.00 629.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 17 01 00 1055+018 19 57 08 -35.9 298.4 9.0 D 48.9 18322 1 1 1904 17 01 00 17 02 00 --- 19 58 08 -36.1 298.6 9.0 D 48.8 0 F 1 1906 17 01 25 Schedule for SHANGHAI (Code Sh ) Page 7 e-EVN ToO: third 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 ---------------------------------------------------------------------------------------- --- Sat 4 Jul 2009 Day 185 --- ---------- Dummy scans ---------- Next scan frequencies: 22229.00 22229.00 Next BBC frequencies: 629.00 629.00 Next scan bandwidths: 16.00 16.00 17 03 00 1055+018 19 59 08 -36.3 298.8 9.0 D 48.7 58 1 1 1906 17 03 00 17 04 00 --- 20 00 09 -36.5 299.0 9.0 D 48.5 0 F 1 1907 17 03 25 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 sh1cm in ./freq.dat From Porcas, from Huang Xinyong 231198 Setup group: 23 Station: SHANGHAI 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= 21600.00 21600.00 21600.00 21600.00 21600.00 21600.00 21600.00 21600.00 Net SB= L L U U L L U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 1 2 3 4 3 4 BBC SB= L L U U L L U U IF = C A C A C A C A The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 22229.00 22229.00 22229.00 22229.00 22261.00 22261.00 22261.00 22261.00 BBC fr= 629.00 629.00 629.00 629.00 661.00 661.00 661.00 661.00 Bandwd= 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 S5 S6 S7 S8 PCALXB2= M1 M2 M3 M4 M5 M6 M7 M8 PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off Setup file: 256Mbps Matches group sh1cm in ./freq.dat From Porcas, from Huang Xinyong 231198 Setup group: 12 Station: SHANGHAI 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= 21600.00 21600.00 21600.00 21600.00 Net SB= L L U U Pol. = RCP LCP RCP LCP BBC = 1 2 1 2 BBC SB= L L U U IF = C A C A The following frequency sets based on this setup were used. Frequency Set: 14 Setup file default. Used pcal sets: 2 LO sum= 22229.00 22229.00 22229.00 22229.00 BBC fr= 629.00 629.00 629.00 629.00 Bandwd= 16.000 16.000 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 2 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10, 18, 26 barrel=roll_off Setup file: 128Mbps Matches group sh1cm in ./freq.dat From Porcas, from Huang Xinyong 231198 Setup group: 1 Station: SHANGHAI 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= 21600.00 21600.00 Net SB= L L Pol. = RCP LCP BBC = 1 2 BBC SB= L L IF = C A The following frequency sets based on this setup were used. Frequency Set: 25 Setup file default. Used pcal sets: 3 LO sum= 22229.00 22229.00 BBC fr= 629.00 629.00 Bandwd= 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 3 PCAL = OFF PCALXB1= S1 S2 OFF OFF OFF OFF OFF OFF PCALXB2= M1 M2 OFF OFF OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10 barrel=roll_off SOURCE LIST -- e-EVN ToO: third 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) J0739+0137 07 36 42.512339 * 07 39 18.033897 07 39 47.212578 0.30 * 0736+017 01 44 00.18089 * 01 37 04.61782 01 35 47.57759 0.21 J0739+01 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 0.233 scan hours, 2.852 baseline hours above horizon. J0808-0751 08 05 49.552837 * 08 08 15.536038 08 08 42.863437 0.21 * 0805-077 -07 42 22.40682 *-07 51 09.88640 -07 52 50.08889 0.32 J0808-07 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 0.525 scan hours, 9.291 baseline hours above horizon. J0854+2006 08 51 57.250618 * 08 54 48.874930 08 55 21.347207 0.21 0851+202 20 17 58.41742 * 20 06 30.64087 20 04 23.07414 0.40 J0854+20 /aps3/sched8.1/catalogs/sources.vlba * OJ287 VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 0.967 scan hours, 34.494 baseline hours above horizon. * J0948+0022 09 46 23.258684 * 09 48 57.320118 09 49 26.579113 0.75 0946+006 00 36 25.20246 * 00 22 25.55966 00 19 44.29629 1.53 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 7.364 scan hours, 157.249 baseline hours above horizon. J1058+0133 10 55 55.313730 * 10 58 29.605208 10 58 59.249612 0.30 * 1055+018 01 50 03.53724 * 01 33 58.82374 01 30 52.63339 0.20 J1058+01 /aps3/sched8.1/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2008a_astro 3.494 scan hours, 41.928 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) 0736+017 23.9 0805-077 35.7 OJ287 28.2 J0948+0022 48.0 1055+018 62.9 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