COVER INFORMATION Station: VLA1 (Code Y ) Experiment: BK121B - 2nd epoch ToO observations of SGR 1806-20 Exp. Code: BK121B Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Mike Garrett Address: JIVE Postbus 2 7990AA Dwingeloo The Netherlands Phone: +31 521596511 EMAIL: garrett@jive.nl Fax: +31 521 596539 Phone during observation: +31 521596511 & +31 621201417 Observing mode: Continuum Notes: Schedule for VLA1 (Code Y ) Page 2 BK121B - 2nd epoch ToO observations of SGR 1806-20 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 6 Jan 2005 Day 6 --- Next scan frequencies: 1400.49 1400.49 1408.49 1408.49 1416.49 1416.49 1424.49 1424.49 Next BBC frequencies: 610.59 610.59 618.59 618.59 626.59 626.59 634.59 634.59 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 19 04 39 J1825-1718 19 00 01 38.0 190.4 0.6 9.0 0 1 1 0 19 04 39 19 06 08 --- 19 01 31 37.9 190.8 0.6 9.4 90 F 1 1197 19 06 08 J1811-2055 19 01 31 33.7 194.1 0.8 12.5 -28 1 1 1197 19 06 08 19 07 38 --- 19 03 01 33.6 194.5 0.9 12.8 62 F 1 2393 19 07 38 SGR1806-20 19 03 01 34.0 195.3 0.9 13.5 -16 1 1 2393 19 07 38 19 10 38 --- 19 06 01 33.8 196.2 1.0 14.2 163 F 1 4787 19 10 38 J1811-2055 19 06 01 33.5 195.3 0.9 13.6 -16 1 1 4787 19 10 38 19 12 07 --- 19 07 31 33.4 195.7 0.9 13.9 74 F 1 5984 19 12 07 SGR1806-20 19 07 31 33.8 196.6 1.0 14.6 -16 1 1 5984 19 12 07 19 15 07 --- 19 10 31 33.6 197.4 1.0 15.3 163 F 1 8377 19 15 07 J1811-2055 19 10 31 33.2 196.6 1.0 14.6 -16 1 1 8377 19 15 07 19 16 37 --- 19 12 01 33.1 197.0 1.0 15.0 74 F 1 9574 19 16 37 SGR1806-20 19 12 01 33.5 197.8 1.1 15.7 -16 1 1 9574 19 16 37 19 19 36 --- 19 15 01 33.3 198.6 1.1 16.4 163 F 1 11967 19 19 36 J1811-2055 19 15 01 33.0 197.8 1.1 15.7 -16 1 1 11967 19 19 36 19 21 06 --- 19 16 31 32.9 198.2 1.1 16.1 74 F 1 13164 19 21 06 SGR1806-20 19 16 31 33.2 199.0 1.1 16.7 -16 1 1 13164 19 21 06 19 24 05 --- 19 19 31 33.0 199.8 1.2 17.4 163 F 1 15557 19 24 05 J1825-1718 19 19 31 37.0 196.1 0.9 13.9 -27 1 1 15557 19 24 05 19 25 35 --- 19 21 01 37.0 196.5 0.9 14.3 63 F 1 16754 19 25 35 J1811-2055 19 21 01 32.6 199.4 1.2 17.1 -28 1 2 16754 19 25 35 19 27 05 --- 19 22 31 32.5 199.8 1.2 17.4 62 R 1 17249 19 27 05 SGR1806-20 19 22 31 32.8 200.6 1.2 18.1 -16 1 2 17249 19 27 05 19 30 04 --- 19 25 31 32.5 201.4 1.3 18.8 163 R 1 14856 Schedule for VLA1 (Code Y ) Page 3 BK121B - 2nd epoch ToO observations of SGR 1806-20 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 6 Jan 2005 Day 6 --- 19 30 04 J1811-2055 19 25 31 32.2 200.6 1.2 18.1 -16 1 2 14856 19 30 04 19 31 34 --- 19 27 01 32.1 200.9 1.3 18.5 73 R 1 13659 19 31 34 SGR1806-20 19 27 01 32.4 201.8 1.3 19.1 -16 1 2 13659 19 31 34 19 34 34 --- 19 30 01 32.2 202.6 1.4 19.8 163 R 1 11266 19 34 34 J1811-2055 19 30 01 31.9 201.7 1.3 19.2 -16 1 2 11266 19 34 34 19 36 03 --- 19 31 31 31.8 202.1 1.3 19.5 73 R 1 10069 19 36 03 SGR1806-20 19 31 31 32.1 203.0 1.4 20.2 -16 1 2 10069 19 36 03 19 39 03 --- 19 34 31 31.8 203.7 1.4 20.8 163 R 1 7675 19 39 03 J1811-2055 19 34 31 31.6 202.9 1.4 20.2 -16 1 2 7675 19 39 03 19 40 33 --- 19 36 01 31.4 203.3 1.4 20.5 73 R 1 6479 19 40 33 SGR1806-20 19 36 01 31.7 204.1 1.5 21.2 -16 1 2 6479 19 40 33 19 43 32 --- 19 39 01 31.4 204.9 1.5 21.8 163 R 1 4085 19 43 32 J1825-1718 19 39 01 35.7 201.7 1.2 18.7 -28 1 2 4085 19 43 32 19 45 02 --- 19 40 31 35.6 202.1 1.2 19.0 62 R 1 2888 19 45 02 J1811-2055 19 40 31 31.1 204.4 1.5 21.5 -29 1 2 2888 19 45 02 19 46 32 --- 19 42 01 30.9 204.8 1.5 21.8 61 R 1 1692 19 46 32 SGR1806-20 19 42 01 31.2 205.6 1.6 22.5 -16 1 3 1692 19 46 32 19 49 31 --- 19 45 01 30.9 206.4 1.6 23.1 163 F 1 702 19 49 31 J1811-2055 19 45 01 30.7 205.6 1.6 22.5 -16 1 3 702 19 49 31 19 51 01 --- 19 46 31 30.5 205.9 1.6 22.8 73 F 1 1898 19 51 01 SGR1806-20 19 46 31 30.8 206.8 1.6 23.5 -16 1 3 1898 19 51 01 19 54 01 --- 19 49 31 30.5 207.5 1.7 24.1 163 F 1 4292 19 54 01 J1811-2055 19 49 31 30.3 206.7 1.6 23.5 -16 1 3 4292 19 54 01 19 55 30 --- 19 51 01 30.1 207.1 1.7 23.8 73 F 1 5489 19 55 30 SGR1806-20 19 51 01 30.3 207.9 1.7 24.4 -16 1 3 5489 19 55 30 19 58 30 --- 19 54 01 30.0 208.6 1.8 25.1 163 F 1 7882 19 58 30 J1811-2055 19 54 01 29.8 207.8 1.7 24.4 -16 1 3 7882 19 58 30 20 00 00 --- 19 55 31 29.7 208.2 1.7 24.7 73 F 1 9079 Schedule for VLA1 (Code Y ) Page 4 BK121B - 2nd epoch ToO observations of SGR 1806-20 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 6 Jan 2005 Day 6 --- 20 00 00 SGR1806-20 19 55 31 29.9 209.0 1.8 25.4 -16 1 3 9079 20 00 00 20 02 59 --- 19 58 31 29.6 209.7 1.8 26.0 163 F 1 11472 20 02 59 J1825-1718 19 58 31 34.1 207.0 1.5 23.2 -28 1 3 11472 20 02 59 20 04 29 --- 20 00 01 33.9 207.4 1.6 23.5 61 F 1 12669 20 04 29 J1811-2055 20 00 01 29.2 209.2 1.8 25.7 -29 1 3 12669 20 04 29 20 05 59 --- 20 01 31 29.1 209.6 1.8 26.0 61 F 1 13866 20 05 59 SGR1806-20 20 01 31 29.3 210.5 1.9 26.6 -16 1 3 13866 20 05 59 20 08 58 --- 20 04 31 29.0 211.2 1.9 27.2 163 F 1 16259 20 08 58 J1811-2055 20 04 31 28.8 210.3 1.9 26.6 -16 1 3 16259 20 08 58 20 10 28 --- 20 06 01 28.6 210.7 1.9 26.9 73 F 1 17456 20 10 28 SGR1806-20 20 06 01 28.8 211.5 2.0 27.5 -16 1 4 17456 20 10 28 20 13 27 --- 20 09 01 28.5 212.2 2.0 28.1 163 R 1 15062 20 13 27 J1811-2055 20 09 01 28.3 211.4 2.0 27.5 -16 1 4 15062 20 13 27 20 14 57 --- 20 10 31 28.1 211.7 2.0 27.8 73 R 1 13866 20 14 57 SGR1806-20 20 10 31 28.3 212.6 2.0 28.4 -16 1 4 13866 20 14 57 20 17 57 --- 20 13 31 28.0 213.3 2.1 29.0 163 R 1 11472 20 17 57 J1811-2055 20 13 31 27.8 212.4 2.0 28.4 -16 1 4 11472 20 17 57 20 19 26 --- 20 15 01 27.6 212.8 2.1 28.7 73 R 1 10275 20 19 26 SGR1806-20 20 15 01 27.8 213.6 2.1 29.3 -16 1 4 10275 20 19 26 20 22 26 --- 20 18 01 27.4 214.3 2.2 29.9 163 R 1 7882 20 24 26 J1825-1718 20 20 01 31.9 212.5 1.9 27.8 91 1 4 7882 20 24 26 20 25 55 --- 20 21 31 31.7 212.9 1.9 28.1 90 R 1 6685 20 25 55 J1811-2055 20 21 31 26.9 214.3 2.2 30.0 -29 1 4 6685 20 25 55 20 27 25 --- 20 23 01 26.7 214.6 2.2 30.3 60 R 1 5489 20 27 25 SGR1806-20 20 23 01 26.9 215.5 2.2 30.8 -16 1 4 5489 20 27 25 20 30 25 --- 20 26 01 26.5 216.1 2.3 31.4 163 R 1 3095 20 30 25 J1811-2055 20 26 01 26.4 215.3 2.2 30.8 -16 1 4 3095 20 30 25 20 31 54 --- 20 27 31 26.2 215.6 2.3 31.1 73 R 1 1898 Schedule for VLA1 (Code Y ) Page 5 BK121B - 2nd epoch ToO observations of SGR 1806-20 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 6 Jan 2005 Day 6 --- 20 31 54 SGR1806-20 20 27 31 26.3 216.5 2.3 31.7 -16 1 5 1898 20 31 54 20 34 54 --- 20 30 31 25.9 217.1 2.4 32.2 163 F 1 495 20 34 54 J1811-2055 20 30 31 25.8 216.3 2.3 31.7 -16 1 5 495 20 34 54 20 36 24 --- 20 32 01 25.6 216.6 2.3 31.9 73 F 1 1692 20 36 24 SGR1806-20 20 32 01 25.7 217.5 2.4 32.5 -16 1 5 1692 20 36 24 20 39 23 --- 20 35 01 25.4 218.1 2.4 33.1 163 F 1 4085 20 39 23 J1811-2055 20 35 01 25.3 217.3 2.4 32.5 -16 1 5 4085 20 39 23 20 40 53 --- 20 36 31 25.1 217.6 2.4 32.8 73 F 1 5282 20 40 53 SGR1806-20 20 36 31 25.2 218.4 2.5 33.3 -16 1 5 5282 20 40 53 20 43 52 --- 20 39 31 24.8 219.1 2.5 33.9 163 F 1 7675 20 43 52 J1811-2055 20 39 31 24.7 218.3 2.5 33.3 -16 1 5 7675 20 43 52 20 45 22 --- 20 41 01 24.5 218.6 2.5 33.6 73 F 1 8872 20 45 22 SGR1806-20 20 41 01 24.6 219.4 2.5 34.1 -16 1 5 8872 20 45 22 20 48 22 --- 20 44 01 24.2 220.0 2.6 34.7 163 F 1 11266 20 48 22 J1811-2055 20 44 01 24.1 219.2 2.5 34.1 -16 1 5 11266 20 48 22 20 49 51 --- 20 45 31 23.9 219.5 2.6 34.4 74 F 1 12462 20 49 51 SGR1806-20 20 45 31 24.0 220.4 2.6 34.9 -16 1 5 12462 20 49 51 20 52 51 --- 20 48 31 23.6 221.0 2.7 35.4 163 F 1 14856 20 54 51 3C454.3 20 50 31 57.0 115.1 -2.1 -51.4 -54 1 6 14856 20 54 51 20 59 50 --- 20 55 31 57.9 116.5 -2.0 -50.5 245 R 1 16355 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: v21cm.set Matches group y_01389.9j in /aps3/sched/catalogs/freq.dat In VA mode, only IFs A and D are phased. Setup group: 3 Station: VLA1 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 speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 789.90 789.90 789.90 789.90 789.90 789.90 789.90 789.90 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: 3 Setup file default. Used pcal sets: 1 LO sum= 1400.49 1400.49 1408.49 1408.49 1416.49 1416.49 1424.49 1424.49 BBC fr= 610.59 610.59 618.59 618.59 626.59 626.59 634.59 634.59 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 VLA specific information: (LO and FI cards will be written.) VLABAND: VL VLABW: 0000 FEFILTER: 0000 VLAFEAB: -3.20 VLAFECD: -3.20 VLAIF: SYSLIF VLASYNA: 3589.90 VLASYNB: 3589.90 VLAROT: VLBLROT FLUKEA: 100.00 FLUKEB: 200.00 FLUKESET: 0 Details for VLA IFs: LO Sum Frequency span VLBI FIRSTLO VLA IF A: 1389.9000 1389.9000- 1439.9000 789.9000 VLA IF B: 1389.9000 1389.9000- 1439.9000 789.9000 VLA IF C: 1389.9000 1389.9000- 1439.9000 789.9000 VLA IF D: 1389.9000 1389.9000- 1439.9000 789.9000 With new digital patch panel, VLA IF = VLB IF. SOURCE LIST -- BK121B - 2nd epoch ToO observations of SGR 1806-20 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) * SGR1806-20 18 05 40.698500 * 18 08 39.342000 18 08 55.295263 -20 25 11.10024 *-20 24 39.76000 -20 24 44.14657 From catalog imbedded in main SCHED input file. * J1811-2055 18 08 07.489967 * 18 11 06.800000 18 11 22.811594 -20 55 45.49976 *-20 55 03.44400 -20 55 06.81422 From catalog imbedded in main SCHED input file. * J1825-1718 18 22 42.013768 * 18 25 36.532220 18 25 52.098079 -17 20 35.28951 *-17 18 49.84840 -17 18 47.71300 From catalog imbedded in main SCHED input file. J2253+1608 22 51 29.519733 * 22 53 57.747932 22 54 11.286033 2251+158 15 52 54.34806 * 16 08 53.56089 16 10 27.63016 * 3C454.3 /aps3/sched/catalogs/sources.vlba J2253+16 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) SGR1806-20 14.8 J1811-2055 14.2 J1825-1718 12.0 3C454.3 66.7 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