COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: Mapping the accretion disk in the IC2560 AGN ... Exp. Code: BG155 Schedule Version: 4.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Lincoln J. Greenhill Address: Harvard-Smithsonian CfA, MS 42 60 Garden St Cambridge, MA 02138 USA Phone: 617 495 7194 EMAIL: lincoln@cfa.harvard.edu Fax: 617 495 7345 Phone during observation: 617 851 8918 Observing mode: 512-8-2 1.3 cm Notes: VLA: toss out antennas without good positions. VLA: toss out outer 1-2 antennas on each arm for phasing,if nec. VLA: BBC 1/8 lie outside the VLA 50 MHz IF. This is OK. VLA (5m) & GBT (10m) pointing every roughly 1 - 1.3 hours. Schedule for GBT_VLBA (Code Gb ) Page 2 Mapping the accretion disk in the IC2560 AGN ... 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) ---------------------------------------------------------------------------------------- --- Thu 30 Dec 2004 Day 365 --- Next scan frequencies: 21800.49 21828.49 21968.49 22066.49 22150.49 22220.49 22262.49 22276.49 Next BBC frequencies: 500.49 528.49 668.49 766.49 850.49 920.49 962.49 976.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 07 08 00 0235+164 08 24 55 12.9 -78.9 5.8 53.3 0 1 1 0 07 08 00 07 10 00 --- 08 26 55 12.6 -78.6 5.8 53.3 120 F 1 1600 07 13 00 1357+769 08 29 55 39.0 17.1 -5.5 -87.3 -11 1 1 1600 07 13 00 07 15 00 --- 08 31 56 39.2 17.1 -5.4 -87.7 109 F 1 3200 07 17 00 0133+476 08 33 56 19.4 -43.6 6.9 53.6 -13 1 1 3200 07 17 00 07 19 00 --- 08 35 56 19.2 -43.4 7.0 53.3 107 F 1 4800 07 21 00 NRAO150 08 37 57 41.0 -51.3 4.6 76.3 21 1 1 4800 07 21 00 07 23 00 --- 08 39 57 40.7 -51.2 4.7 76.0 120 F 1 6400 07 27 00 1308+326 08 43 58 36.5 74.8 -4.4 -63.4 -2 1 1 6400 07 27 00 07 29 00 --- 08 45 58 36.8 75.0 -4.4 -63.6 118 F 1 8000 07 33 00 0834-201 08 49 59 31.2 183.6 0.2 3.0 27 1 1 8000 07 33 00 07 35 00 --- 08 51 59 31.2 184.1 0.3 3.5 120 F 1 9600 07 37 00 OJ287 08 53 59 71.7 179.2 0.0 -0.7 -41 1 1 9600 07 37 00 07 39 00 --- 08 56 00 71.7 180.7 0.0 0.5 79 F 1 11200 Next scan frequencies: 21995.07 21995.07 22010.65 22010.65 22024.74 22024.74 22039.57 22039.57 Next BBC frequencies: 695.07 695.07 710.65 710.65 724.74 724.74 739.57 739.57 07 40 00 OJ287 08 57 00 71.7 181.4 0.0 1.2 32 1 1 11200 07 40 00 07 48 00 --- 09 05 01 71.5 187.4 0.2 6.1 480 F 1 17600 07 58 00 1034-293 09 15 03 19.3 161.1 -1.4 -17.0 400 1 2 17600 07 58 00 08 02 00 --- 09 19 03 19.6 162.0 -1.3 -16.2 240 R 1 14400 08 03 00 IC2560 09 20 04 16.8 167.7 -0.9 -11.5 18 1 2 14400 08 03 00 08 11 00 --- 09 28 05 17.1 169.5 -0.8 -9.9 480 R 1 8000 Schedule for GBT_VLBA (Code Gb ) Page 3 Mapping the accretion disk in the IC2560 AGN ... 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) ---------------------------------------------------------------------------------------- --- Thu 30 Dec 2004 Day 365 --- 08 12 00 1034-293 09 29 05 20.1 164.2 -1.1 -14.2 19 1 2 8000 08 12 00 08 16 00 --- 09 33 06 20.3 165.1 -1.1 -13.4 240 R 1 4800 08 17 00 IC2560 09 34 06 17.3 170.8 -0.7 -8.7 19 1 3 4800 08 17 00 08 25 00 --- 09 42 07 17.5 172.5 -0.6 -7.1 480 F 1 1600 08 26 00 1034-293 09 43 07 20.8 167.4 -0.9 -11.4 20 1 3 1600 08 26 00 08 30 00 --- 09 47 08 21.0 168.3 -0.8 -10.5 240 F 1 4800 08 31 00 IC2560 09 48 08 17.7 173.8 -0.5 -5.8 19 1 3 4800 08 31 00 08 39 00 --- 09 56 10 17.8 175.5 -0.3 -4.2 480 F 1 11200 08 40 00 1034-293 09 57 10 21.3 170.6 -0.7 -8.5 20 1 3 11200 08 40 00 08 44 00 --- 10 01 10 21.5 171.5 -0.6 -7.6 240 F 1 14400 08 45 00 IC2560 10 02 11 17.9 176.9 -0.2 -3.0 19 1 4 14400 08 45 00 08 53 00 --- 10 10 12 18.0 178.6 -0.1 -1.3 480 R 1 14400 09 14 00 1034-293 10 31 15 22.0 178.5 -0.1 -1.3 1221 1 4 14400 09 14 00 09 19 00 --- 10 36 16 22.0 179.7 0.0 -0.3 300 R 1 10400 09 20 00 IC2560 10 37 16 17.8 184.5 0.3 4.3 20 1 4 10400 09 20 00 09 28 00 --- 10 45 18 17.7 186.3 0.5 5.9 480 R 1 4000 09 29 00 1034-293 10 46 18 21.9 182.1 0.1 1.9 20 1 4 4000 09 29 00 09 33 00 --- 10 50 18 21.9 183.0 0.2 2.7 240 R 1 800 09 34 00 IC2560 10 51 19 17.5 187.6 0.6 7.1 19 1 5 800 09 34 00 09 44 00 --- 11 01 20 17.2 189.8 0.7 9.2 600 F 1 7200 09 45 00 1034-293 11 02 20 21.7 185.8 0.4 5.2 19 1 5 7200 09 45 00 09 49 00 --- 11 06 21 21.6 186.7 0.5 6.1 240 F 1 10400 09 50 00 IC2560 11 07 21 17.0 191.0 0.8 10.4 19 1 6 10400 09 50 00 10 00 00 --- 11 17 23 16.6 193.2 1.0 12.4 600 R 1 16800 10 01 00 1034-293 11 18 23 21.3 189.5 0.7 8.6 18 1 6 16800 10 01 00 10 05 00 --- 11 22 24 21.2 190.5 0.7 9.4 240 R 1 13600 10 06 00 IC2560 11 23 24 16.3 194.5 1.1 13.6 18 1 6 13600 10 06 00 10 16 00 --- 11 33 25 15.8 196.6 1.3 15.5 600 R 1 5600 Schedule for GBT_VLBA (Code Gb ) Page 4 Mapping the accretion disk in the IC2560 AGN ... 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) ---------------------------------------------------------------------------------------- --- Thu 30 Dec 2004 Day 365 --- 10 26 00 1034-293 11 43 27 20.3 195.3 1.1 13.7 559 1 6 5600 10 26 00 10 31 00 --- 11 48 28 20.0 196.4 1.2 14.7 300 R 1 1600 10 32 00 IC2560 11 49 28 14.8 199.9 1.5 18.6 17 1 7 1600 10 32 00 10 42 00 --- 11 59 30 14.1 201.9 1.7 20.5 600 F 1 6400 10 43 00 1034-293 12 00 30 19.3 199.0 1.4 17.1 17 1 7 6400 10 43 00 10 47 00 --- 12 04 31 19.0 199.9 1.5 17.9 240 F 1 9600 10 48 00 IC2560 12 05 31 13.7 203.1 1.8 21.7 16 1 7 9600 10 48 00 10 58 00 --- 12 15 32 12.9 205.1 2.0 23.5 600 F 1 17600 10 59 00 1034-293 12 16 33 18.2 202.5 1.7 20.2 16 1 8 17600 10 59 00 11 03 00 --- 12 20 33 17.9 203.4 1.7 21.0 240 R 1 14400 11 04 00 IC2560 12 21 33 12.4 206.3 2.1 24.6 16 1 8 14400 11 04 00 11 14 00 --- 12 31 35 11.5 208.2 2.3 26.4 600 R 1 6400 11 15 00 1034-293 12 32 35 16.9 205.9 1.9 23.2 16 1 8 6400 11 15 00 11 19 00 --- 12 36 36 16.5 206.8 2.0 23.9 240 R 1 3200 11 20 00 IC2560 12 37 36 10.9 209.3 2.4 27.4 15 1 9 3200 11 20 00 11 30 00 --- 12 47 38 9.9 211.2 2.5 29.1 600 F 1 4800 11 40 00 1034-293 12 57 39 14.5 211.0 2.3 27.7 559 1 9 4800 11 40 00 11 45 00 --- 13 02 40 14.0 212.0 2.4 28.5 300 F 1 8800 11 46 00 IC2560 13 03 40 8.2 214.1 2.8 31.8 15 1 9 8800 11 46 00 11 56 00 --- 13 13 42 7.1 215.9 3.0 33.4 600 F 1 16800 11 57 00 1034-293 13 14 42 12.7 214.4 2.6 30.6 15 1 10 16800 11 57 00 12 01 00 --- 13 18 43 12.3 215.1 2.7 31.2 240 R 1 15200 12 02 00 IC2560 13 19 43 6.4 216.9 3.1 34.4 14 1 10 15200 12 02 00 12 12 00 --- 13 29 45 5.2 218.6 3.2 36.0 600 R 1 7200 12 13 00 1034-293 13 30 45 10.9 217.4 2.9 33.2 15 1 10 7200 12 13 00 12 17 00 --- 13 34 45 10.4 218.1 3.0 33.8 240 R 1 4000 12 27 00 1034-293 13 44 47 9.2 220.0 3.1 35.4 568 1 10 4000 12 27 00 12 31 00 --- 13 48 48 8.7 220.7 3.2 36.0 240 R 1 800 Schedule for GBT_VLBA (Code Gb ) Page 5 Mapping the accretion disk in the IC2560 AGN ... 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) ---------------------------------------------------------------------------------------- --- Thu 30 Dec 2004 Day 365 --- 12 50 00 1034-293 14 07 51 6.1 224.0 3.5 38.7 1104 1 11 800 12 50 00 12 55 00 --- 14 12 52 5.5 224.9 3.6 39.4 300 F 1 3200 Next scan frequencies: 21800.49 21828.49 21968.49 22066.49 22150.49 22220.49 22262.49 22276.49 Next BBC frequencies: 500.49 528.49 668.49 766.49 850.49 920.49 962.49 976.49 13 35 00 OJ287 14 52 58 12.7 285.7 6.0 53.4 2267 1 11 3200 13 35 00 13 37 00 --- 14 54 58 12.4 286.0 6.0 53.3 120 F 1 4800 13 40 00 1308+326 14 57 59 67.4 262.5 1.8 66.8 -29 1 11 4800 13 40 00 13 42 00 --- 14 59 59 67.0 263.0 1.8 66.9 91 F 1 6400 13 46 00 OQ208 15 04 00 74.5 233.9 0.9 46.1 160 1 11 6400 13 46 00 13 48 00 --- 15 06 00 74.2 235.1 1.0 46.9 120 F 1 8000 13 51 00 1514-241 15 09 01 27.1 177.7 -0.1 -2.0 -3 1 11 8000 13 51 00 13 53 00 --- 15 11 01 27.2 178.2 -0.1 -1.5 117 F 1 9600 13 55 00 NRAO530 15 13 01 28.9 140.3 -2.3 -30.9 25 1 11 9600 13 55 00 13 57 00 --- 15 15 02 29.2 140.7 -2.3 -30.6 120 F 1 11200 13 59 00 1606+106 15 17 02 59.7 154.0 -0.9 -20.4 -8 1 11 11200 13 59 00 14 01 00 --- 15 19 02 59.9 154.9 -0.8 -19.7 112 F 1 12800 14 03 00 1741-038 15 21 03 36.3 133.6 -2.4 -34.7 15 1 11 12800 14 03 00 14 05 00 --- 15 23 03 36.6 134.1 -2.4 -34.3 120 F 1 14400 Next scan frequencies: 21995.07 21995.07 22010.65 22010.65 22024.74 22024.74 22039.57 22039.57 Next BBC frequencies: 695.07 695.07 710.65 710.65 724.74 724.74 739.57 739.57 14 17 00 3C273B 15 35 05 34.2 241.1 3.1 43.3 510 1 12 14400 14 17 00 14 25 00 --- 15 43 06 32.8 242.8 3.2 44.2 480 R 1 14400 Schedule for GBT_VLBA (Code Gb ) Page 6 Mapping the accretion disk in the IC2560 AGN ... 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) ---------------------------------------------------------------------------------------- --- Thu 30 Dec 2004 Day 365 --- Next scan frequencies: 21800.49 21828.49 21968.49 22066.49 22150.49 22220.49 22262.49 22276.49 Next BBC frequencies: 500.49 528.49 668.49 766.49 850.49 920.49 962.49 976.49 14 26 00 3C273B 15 44 07 32.6 243.0 3.2 44.3 36 1 12 14400 14 26 00 14 28 00 --- 15 46 07 32.2 243.4 3.3 44.5 120 R 1 12800 14 30 00 0917+624 15 48 07 30.6 327.5 6.4 64.7 -52 1 12 12800 14 30 00 14 32 00 --- 15 50 08 30.4 327.6 6.5 64.3 68 R 1 11200 14 38 00 0836+710 15 56 08 30.4 338.9 7.2 59.4 309 1 12 11200 14 38 00 14 40 00 --- 15 58 09 30.2 339.0 7.3 59.0 120 R 1 9600 14 42 00 4C39.25 16 00 09 17.7 306.2 6.5 54.5 33 1 12 9600 14 42 00 14 44 00 --- 16 02 09 17.4 306.4 6.6 54.2 120 R 1 8000 14 46 00 1357+769 16 04 10 49.3 349.3 2.1 141.0 -12 1 12 8000 14 46 00 14 48 00 --- 16 06 10 49.3 349.2 2.1 140.4 108 R 1 6400 14 53 00 1514-241 16 11 11 26.0 193.5 0.9 11.6 8 1 12 6400 14 53 00 14 55 00 --- 16 13 11 25.9 194.0 0.9 12.0 120 R 1 4800 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: atmos.set Matches group gbt1cm_a3 in /home/filehost/cwalker/sched/catalogs/freq.dat LO1=16.05, LO2=15.75, LO3=10.5 Setup group: 2 Station: GBT_VLBA Total bit rate: 512 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 Two tape drives will be used. Required by this setup. 1st LO= 21300.00 21300.00 21300.00 21300.00 21300.00 21300.00 21300.00 21300.00 Net SB= U U U U U U U U Pol. = LCP LCP LCP LCP LCP LCP LCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = C C C C C C C C The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 1 LO sum= 21800.49 21828.49 21968.49 22066.49 22150.49 22220.49 22262.49 22276.49 BBC fr= 500.49 528.49 668.49 766.49 850.49 920.49 962.49 976.49 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 = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 13510 13510 13510 13510 PCALFR2= 510 510 510 510 13510 13510 13510 13510 Track assignments are: track1= 2, 18, 3, 19, 66, 82, 67, 83 barrel=roll_auto Setup file: bg155.set Matches group gbt1cm_a3 in /home/filehost/cwalker/sched/catalogs/freq.dat LO1=16.05, LO2=15.75, LO3=10.5 Setup group: 4 Station: GBT_VLBA Total bit rate: 512 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 Two tape drives will be used. Required by this setup. 1st LO= 21300.00 21300.00 21300.00 21300.00 21300.00 21300.00 21300.00 21300.00 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 = A C A C A C A C The following frequency sets based on this setup were used. Frequency Set: 5 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 2 LO sum= 21995.07 21995.07 22010.65 22010.65 22024.74 22024.74 22039.57 22039.57 BBC fr= 695.07 695.07 710.65 710.65 724.74 724.74 739.57 739.57 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: 2 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, 18, 3, 19, 66, 82, 67, 83 barrel=roll_auto SOURCE LIST -- Mapping the accretion disk in the IC2560 AGN ... 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) (B1950) (J2000) (Date) * IC2560 10 14 04.440770 * 10 16 18.710000 10 16 32.374207 -33 18 50.45908 *-33 33 49.74000 -33 35 05.44076 From catalog imbedded in main SCHED input file. Doppler based on heliocentric frame and radio definition. Velocities: 3150.00 3150.00 2940.00 2940.00 2750.00 2750.00 2550.00 2550.00 J0121+1149 01 19 03.080127 * 01 21 41.595043 01 21 57.181130 * 0119+115 11 34 09.31515 * 11 49 50.41313 11 51 27.00835 J0121+11 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 0.500 baseline hours above horizon. J0136+4751 01 33 55.103066 * 01 36 58.594811 01 37 16.517590 * 0133+476 47 36 12.85367 * 47 51 29.10006 47 53 14.72994 J0136+47 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 0.908 baseline hours above horizon. J0238+1636 02 35 52.630215 * 02 38 38.930107 02 38 55.715623 * 0235+164 16 24 04.01629 * 16 36 59.27471 16 38 22.69016 J0238+16 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 0.922 baseline hours above horizon. J0359+5057 03 55 45.261360 * 03 59 29.747261 03 59 52.991540 0355+508 50 49 20.28556 * 50 57 50.16151 50 58 54.56026 J0359+50 /home/filehost/cwalker/sched/catalogs/sources.vlba * NRAO150 ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 1.200 baseline hours above horizon. J0646+4451 06 42 53.021438 * 06 46 32.025986 06 46 55.299383 * 0642+449 44 54 30.82738 * 44 51 16.59013 44 51 02.46156 J0646+44 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 0.500 baseline hours above horizon. J0836-2016 08 34 24.601654 * 08 36 39.215214 08 36 53.417141 * 0834-201 -20 06 30.40781 *-20 16 59.50350 -20 17 52.59350 J0836-20 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 1.200 baseline hours above horizon. J0841+7053 08 36 21.556642 * 08 41 24.365280 08 41 58.023665 * 0836+710 71 04 22.42747 * 70 53 42.17309 70 52 33.97614 J0841+70 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 1.200 baseline hours above horizon. J0854+2006 08 51 57.250612 * 08 54 48.874924 08 55 06.824116 0851+202 20 17 58.41743 * 20 06 30.64088 20 05 23.50978 J0854+20 /home/filehost/cwalker/sched/catalogs/sources.vlba * OJ287 ICRF - Ext.1 Source - 1998 IERS Annual Report Doppler based on other sources. J0921+6215 09 17 40.306839 * 09 21 36.231052 09 22 01.918473 * 0917+624 62 28 38.64013 * 62 15 52.18035 62 14 29.04665 J0921+62 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 1.084 baseline hours above horizon. J0927+3902 09 23 55.319195 * 09 27 03.013916 09 27 22.780939 0923+392 39 15 23.56655 * 39 02 20.85195 39 00 59.08807 * 4C39.25 /home/filehost/cwalker/sched/catalogs/sources.vlba J0927+39 ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 0.933 baseline hours above horizon. J1037-2934 10 34 55.824623 * 10 37 16.079735 10 37 30.194521 * 1034-293 -29 18 26.97233 *-29 34 02.81322 -29 35 23.23503 J1037-29 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report Doppler based on other sources. J1229+0203 12 26 33.245833 * 12 29 06.699729 12 29 21.618269 1226+023 02 19 43.30569 * 02 03 08.59819 02 01 29.22271 3C273 /home/filehost/cwalker/sched/catalogs/sources.vlba * 3C273B ICRF - Ext.1 Source - 1998 IERS Annual Report J1229+02 Doppler based on other sources. J1310+3220 13 08 07.560126 * 13 10 28.663845 13 10 42.361861 * 1308+326 32 36 40.23888 * 32 20 43.78295 32 18 56.84146 J1310+32 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.067 scan hours, 2.064 baseline hours above horizon. J1331+3030 13 28 49.657691 * 13 31 08.287984 13 31 21.583128 1328+307 30 45 58.64021 * 30 30 32.95885 30 28 49.14838 * 3C286 /home/filehost/cwalker/sched/catalogs/sources.vlba J1331+30 VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 Doppler based on other sources. J1357+7643 13 57 42.116987 * 13 57 55.371517 13 57 56.438385 * 1357+769 76 57 53.35431 * 76 43 21.05111 76 41 33.60770 J1357+76 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.067 scan hours, 2.347 baseline hours above horizon. J1407+2827 14 04 45.615151 * 14 07 00.394410 14 07 13.054925 1404+286 28 41 29.23495 * 28 27 14.68998 28 25 37.91557 J1407+28 /home/filehost/cwalker/sched/catalogs/sources.vlba * OQ208 ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 1.200 baseline hours above horizon. J1517-2422 15 14 45.267386 * 15 17 41.813133 15 17 57.801935 * 1514-241 -24 11 22.67800 *-24 22 19.47594 -24 23 23.07171 J1517-24 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.067 scan hours, 2.394 baseline hours above horizon. J1608+1029 16 06 23.396615 * 16 08 46.203178 16 08 58.954084 * 1606+106 10 36 59.80115 * 10 29 07.77585 10 28 12.35621 J1608+10 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 1.183 baseline hours above horizon. J1733-1304 17 30 13.535192 * 17 33 02.705790 17 33 17.720080 1730-130 -13 02 45.83975 *-13 04 49.54823 -13 05 08.38240 J1733-13 /home/filehost/cwalker/sched/catalogs/sources.vlba * NRAO530 ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 0.933 baseline hours above horizon. J1743-0350 17 41 20.616012 * 17 43 58.856136 17 44 12.837597 * 1741-038 -03 48 48.89988 *-03 50 04.61668 -03 50 19.81669 J1743-03 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.033 scan hours, 1.200 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) IC2560 103.3 0119+115 104.2 0133+476 116.4 0235+164 123.4 NRAO150 138.5 0642+449 158.2 0834-201 128.0 0836+710 129.1 OJ287 148.4 0917+624 132.3 4C39.25 141.1 1034-293 102.3 3C273B 93.2 1308+326 96.0 3C286 91.2 1357+769 108.1 OQ208 83.4 1514-241 45.9 1606+106 49.9 NRAO530 18.7 1741-038 23.5 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