COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: No description given. Exp. Code: bc120x Schedule Version: 1.00 Processed by SCHED version: Release of 02 July 2002 PI: Shami Chatterjee Address: Cornell University 515 Space Sciences Ithaca NY 14853 USA Phone: 607 255 9020 EMAIL: shami@astro.cornell.edu Fax: Phone during observation: 607 255 9020 Observing mode: Notes: The optimal observation date is Mar 29. Please try to observe within 2 weeks of this date. Schedule for VLBA_NL (Code Nl ) Page 2 No description given. 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 10 Apr 2003 Day 100 --- Next scan frequencies: 1409.99 1409.99 1503.99 1503.99 1589.99 1589.99 1679.99 1679.99 Next BBC frequencies: 990.01 990.01 896.01 896.01 810.01 810.01 720.01 720.01 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 11 29 19 J1827-0405 18 36 11 44.1 182.9 0.1 2.1 0 1 1 0 11 29 09 11 31 36 --- 18 38 28 44.1 183.7 0.2 2.7 137 F 1 1955 11 31 45 B1831-04 18 38 37 43.8 181.4 0.1 1.0 2 1 1 1955 11 31 36 11 33 45 --- 18 40 37 43.8 182.1 0.1 1.6 120 F 1 3674 11 33 54 J1827-0405 18 40 46 44.0 184.5 0.2 3.3 2 1 1 3674 11 33 45 11 35 24 --- 18 42 16 44.0 185.0 0.2 3.7 90 F 1 4996 11 35 33 B1831-04 18 42 26 43.8 182.7 0.1 2.0 2 1 1 4996 11 35 24 11 37 33 --- 18 44 26 43.7 183.4 0.2 2.5 120 F 1 6715 11 37 42 J1827-0405 18 44 35 44.0 185.8 0.3 4.3 2 1 1 6715 11 37 33 11 39 12 --- 18 46 05 43.9 186.3 0.3 4.7 90 F 1 8037 11 39 21 B1831-04 18 46 14 43.7 184.0 0.2 3.0 2 1 1 8037 11 39 12 11 41 21 --- 18 48 14 43.7 184.7 0.2 3.5 120 F 1 9755 11 41 30 J1827-0405 18 48 24 43.9 187.1 0.3 5.3 2 1 1 9755 11 41 21 11 43 00 --- 18 49 54 43.9 187.6 0.4 5.7 90 F 1 11077 11 43 09 B1831-04 18 50 03 43.7 185.3 0.3 4.0 2 1 1 11077 11 43 00 11 45 09 --- 18 52 03 43.6 186.0 0.3 4.5 120 F 1 12796 11 45 19 J1827-0405 18 52 13 43.8 188.4 0.4 6.3 2 1 1 12796 11 45 09 11 46 48 --- 18 53 43 43.8 188.9 0.4 6.7 90 F 1 14118 11 46 57 B1831-04 18 53 52 43.6 186.6 0.3 5.0 2 1 1 14118 11 46 48 11 48 57 --- 18 55 52 43.5 187.3 0.4 5.5 120 F 1 15836 11 49 07 J1827-0405 18 56 01 43.7 189.7 0.5 7.2 2 1 1 15836 11 48 57 11 50 36 --- 18 57 31 43.6 190.2 0.5 7.6 90 F 1 17158 11 50 46 B1831-04 18 57 40 43.5 187.9 0.4 5.9 2 1 2 17158 11 50 36 11 52 45 --- 18 59 40 43.4 188.6 0.4 6.4 120 R 1 15439 Schedule for VLBA_NL (Code Nl ) Page 3 No description given. 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 10 Apr 2003 Day 100 --- 11 52 55 J1827-0405 18 59 50 43.6 191.0 0.5 8.2 2 1 2 15439 11 52 45 11 54 24 --- 19 01 20 43.5 191.5 0.6 8.6 90 R 1 14118 11 54 34 B1831-04 19 01 29 43.4 189.2 0.4 6.9 2 1 2 14118 11 54 24 11 56 33 --- 19 03 29 43.3 189.9 0.5 7.4 120 R 1 12399 11 56 43 J1827-0405 19 03 38 43.4 192.3 0.6 9.2 2 1 2 12399 11 56 33 11 58 12 --- 19 05 08 43.4 192.8 0.6 9.5 90 R 1 11078 11 58 22 B1831-04 19 05 18 43.3 190.5 0.5 7.9 2 1 2 11078 11 58 12 12 00 21 --- 19 07 18 43.2 191.2 0.5 8.4 120 R 1 9359 12 00 31 J1827-0405 19 07 27 43.3 193.6 0.7 10.1 2 1 2 9359 12 00 21 12 02 00 --- 19 08 57 43.2 194.1 0.7 10.5 90 R 1 8038 12 02 10 B1831-04 19 09 06 43.1 191.8 0.6 8.8 2 1 2 8038 12 02 00 12 04 09 --- 19 11 06 43.0 192.5 0.6 9.3 120 R 1 6319 12 04 19 J1827-0405 19 11 16 43.1 194.9 0.7 11.1 2 1 2 6319 12 04 09 12 05 48 --- 19 12 46 43.0 195.4 0.7 11.4 90 R 1 4998 12 05 58 B1831-04 19 12 55 43.0 193.1 0.6 9.8 2 1 2 4998 12 05 48 12 07 57 --- 19 14 55 42.9 193.8 0.7 10.3 120 R 1 3279 12 08 07 J1827-0405 19 15 04 42.9 196.2 0.8 12.0 2 1 2 3279 12 07 57 12 09 36 --- 19 16 34 42.8 196.7 0.8 12.4 90 R 1 1958 12 09 46 B1831-04 19 16 44 42.8 194.4 0.7 10.7 2 1 2 1958 12 09 36 12 11 45 --- 19 18 44 42.7 195.1 0.7 11.2 120 R 1 239 12 11 55 J1827-0405 19 18 53 42.7 197.4 0.8 12.9 2 1 3 239 12 11 45 12 13 24 --- 19 20 23 42.6 197.9 0.9 13.3 90 F 1 1561 12 13 34 B1831-04 19 20 32 42.6 195.7 0.8 11.6 2 1 3 1561 12 13 24 12 15 33 --- 19 22 32 42.5 196.3 0.8 12.1 120 F 1 3279 12 15 43 J1827-0405 19 22 42 42.5 198.7 0.9 13.8 2 1 3 3279 12 15 33 12 17 12 --- 19 24 12 42.4 199.2 0.9 14.2 90 F 1 4600 12 17 21 B1831-04 19 24 21 42.4 196.9 0.8 12.6 2 1 3 4600 12 17 12 12 19 21 --- 19 26 21 42.3 197.6 0.9 13.1 120 F 1 6318 Schedule for VLBA_NL (Code Nl ) Page 4 No description given. 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 10 Apr 2003 Day 100 --- 12 19 30 J1827-0405 19 26 30 42.2 199.9 1.0 14.8 2 1 3 6318 12 19 21 12 21 00 --- 19 28 00 42.1 200.4 1.0 15.1 90 F 1 7640 12 21 09 B1831-04 19 28 09 42.2 198.2 0.9 13.5 2 1 3 7640 12 21 00 12 23 09 --- 19 30 09 42.1 198.8 0.9 14.0 120 F 1 9358 12 23 18 J1827-0405 19 30 19 42.0 201.2 1.0 15.7 2 1 3 9358 12 23 09 12 24 48 --- 19 31 49 41.9 201.6 1.1 16.0 90 F 1 10679 12 24 57 B1831-04 19 31 58 42.0 199.4 1.0 14.4 2 1 3 10679 12 24 48 12 26 57 --- 19 33 58 41.9 200.1 1.0 14.9 120 F 1 12397 12 27 06 J1827-0405 19 34 07 41.7 202.4 1.1 16.5 2 1 3 12397 12 26 57 12 28 36 --- 19 35 37 41.6 202.9 1.1 16.9 90 F 1 13718 12 28 45 B1831-04 19 35 46 41.7 200.6 1.0 15.3 2 1 3 13718 12 28 36 12 30 45 --- 19 37 46 41.6 201.3 1.1 15.8 120 F 1 15436 12 30 54 J1827-0405 19 37 56 41.4 203.6 1.2 17.4 2 1 3 15436 12 30 45 12 32 24 --- 19 39 26 41.3 204.1 1.2 17.8 90 F 1 16757 12 32 33 B1831-04 19 39 35 41.5 201.9 1.1 16.2 2 1 4 16757 12 32 24 12 34 33 --- 19 41 35 41.3 202.5 1.1 16.6 120 R 1 16726 12 34 42 J1827-0405 19 41 44 41.2 204.8 1.2 18.3 2 1 4 16726 12 34 33 12 36 12 --- 19 43 14 41.0 205.3 1.3 18.6 90 R 1 15405 12 36 21 B1831-04 19 43 23 41.2 203.1 1.1 17.0 2 1 4 15405 12 36 12 12 38 21 --- 19 45 23 41.1 203.7 1.2 17.5 120 R 1 13687 12 38 30 J1827-0405 19 45 33 40.8 206.0 1.3 19.1 2 1 4 13687 12 38 21 12 40 00 --- 19 47 03 40.7 206.5 1.3 19.5 90 R 1 12367 12 40 09 B1831-04 19 47 12 40.9 204.3 1.2 17.9 2 1 4 12367 12 40 00 12 42 09 --- 19 49 12 40.8 204.9 1.2 18.4 120 R 1 10649 12 42 18 J1827-0405 19 49 21 40.5 207.2 1.4 20.0 2 1 4 10649 12 42 09 12 43 48 --- 19 50 51 40.4 207.6 1.4 20.3 90 R 1 9328 12 43 57 B1831-04 19 51 00 40.6 205.5 1.3 18.8 2 1 4 9328 12 43 48 12 45 56 --- 19 53 00 40.5 206.1 1.3 19.2 120 R 1 7611 Schedule for VLBA_NL (Code Nl ) Page 5 No description given. 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 10 Apr 2003 Day 100 --- 12 46 06 J1827-0405 19 53 10 40.2 208.3 1.4 20.8 2 1 4 7611 12 45 56 12 47 35 --- 19 54 40 40.1 208.8 1.4 21.1 90 R 1 6291 12 47 45 B1831-04 19 54 49 40.3 206.6 1.3 19.6 2 1 4 6291 12 47 35 12 49 44 --- 19 56 49 40.1 207.3 1.4 20.0 120 R 1 4573 12 49 54 J1827-0405 19 56 58 39.9 209.5 1.5 21.6 2 1 4 4573 12 49 44 12 51 23 --- 19 58 28 39.7 209.9 1.5 21.9 90 R 1 3253 12 51 32 B1831-04 19 58 37 40.0 207.8 1.4 20.4 2 1 4 3253 12 51 23 12 53 32 --- 20 00 37 39.8 208.4 1.4 20.9 120 R 1 1536 12 53 41 J1827-0405 20 00 47 39.5 210.6 1.5 22.4 2 1 4 1536 12 53 32 12 55 11 --- 20 02 17 39.4 211.1 1.6 22.7 90 R 1 216 12 55 20 B1831-04 20 02 26 39.6 209.0 1.5 21.2 2 1 5 216 12 55 11 12 57 20 --- 20 04 26 39.5 209.6 1.5 21.7 120 F 1 1933 12 57 29 J1827-0405 20 04 35 39.1 211.8 1.6 23.2 2 1 5 1933 12 57 20 12 58 59 --- 20 06 05 39.0 212.2 1.6 23.5 90 F 1 3253 12 59 08 B1831-04 20 06 14 39.3 210.1 1.5 22.0 2 1 5 3253 12 58 59 13 01 08 --- 20 08 14 39.1 210.7 1.6 22.5 120 F 1 4970 13 01 17 J1827-0405 20 08 23 38.8 212.9 1.7 24.0 2 1 5 4970 13 01 08 13 02 47 --- 20 09 53 38.6 213.3 1.7 24.3 90 F 1 6289 13 02 56 B1831-04 20 10 02 38.9 211.2 1.6 22.8 2 1 5 6289 13 02 47 13 04 55 --- 20 12 02 38.7 211.8 1.6 23.2 120 F 1 8006 13 05 05 J1827-0405 20 12 12 38.4 214.0 1.7 24.7 2 1 5 8006 13 04 55 13 06 34 --- 20 13 42 38.2 214.4 1.8 25.0 90 F 1 9326 13 06 43 B1831-04 20 13 51 38.6 212.4 1.7 23.6 2 1 5 9326 13 06 34 13 08 43 --- 20 15 51 38.4 212.9 1.7 24.0 120 F 1 11042 13 08 52 J1827-0405 20 16 00 38.0 215.1 1.8 25.5 2 1 5 11042 13 08 43 13 10 22 --- 20 17 30 37.8 215.5 1.8 25.7 90 F 1 12362 13 10 31 B1831-04 20 17 39 38.2 213.5 1.7 24.4 2 1 5 12362 13 10 22 13 12 31 --- 20 19 39 38.0 214.0 1.8 24.8 120 F 1 14078 Schedule for VLBA_NL (Code Nl ) Page 6 No description given. 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 10 Apr 2003 Day 100 --- 13 12 40 J1827-0405 20 19 48 37.5 216.2 1.9 26.2 2 1 5 14078 13 12 31 13 14 10 --- 20 21 18 37.4 216.6 1.9 26.5 90 F 1 15397 13 14 19 B1831-04 20 21 27 37.8 214.6 1.8 25.1 2 1 5 15397 13 14 10 13 16 18 --- 20 23 27 37.6 215.1 1.8 25.5 120 F 1 17114 13 16 28 J1827-0405 20 23 37 37.1 217.2 1.9 26.9 2 1 6 17114 13 16 18 13 17 57 --- 20 25 07 37.0 217.6 2.0 27.2 90 R 1 16767 13 18 06 B1831-04 20 25 16 37.4 215.6 1.8 25.8 2 1 6 16767 13 17 57 13 20 06 --- 20 27 16 37.2 216.2 1.9 26.2 120 R 1 15051 13 20 15 J1827-0405 20 27 25 36.7 218.3 2.0 27.6 2 1 6 15051 13 20 06 13 21 45 --- 20 28 55 36.5 218.7 2.0 27.9 90 R 1 13733 13 21 54 B1831-04 20 29 04 37.0 216.7 1.9 26.6 2 1 6 13733 13 21 45 13 23 54 --- 20 31 04 36.7 217.3 1.9 26.9 120 R 1 12017 13 24 03 J1827-0405 20 31 13 36.2 219.3 2.1 28.3 2 1 6 12017 13 23 54 13 25 33 --- 20 32 43 36.1 219.7 2.1 28.6 90 R 1 10698 13 25 42 B1831-04 20 32 52 36.5 217.8 2.0 27.3 2 1 6 10698 13 25 33 13 27 41 --- 20 34 52 36.3 218.3 2.0 27.6 120 R 1 8983 13 27 50 J1827-0405 20 35 01 35.8 220.4 2.1 29.0 2 1 6 8983 13 27 41 13 29 20 --- 20 36 31 35.6 220.8 2.1 29.2 90 R 1 7664 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: v18cm-256-8-2-psrvlb.set Matches group v20cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 1 Station: 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 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= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 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 = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 1409.99 1409.99 1503.99 1503.99 1589.99 1589.99 1679.99 1679.99 BBC fr= 990.01 990.01 896.01 896.01 810.01 810.01 720.01 720.01 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 = 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_auto SOURCE LIST -- No description given. 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) * B1831-04 18 31 46.656482 * 18 34 25.598873 18 34 35.280858 -04 28 40.46266 *-04 26 16.19498 -04 26 18.20978 From catalog imbedded in main SCHED input file. * J1827-0405 18 25 06.481626 * 18 27 45.040424 18 27 54.734942 -04 07 39.91469 *-04 05 44.57841 -04 05 48.44790 From catalog imbedded in main SCHED input file. 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) B1831-04 100.5 J1827-0405 102.1 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