COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: No description given. Exp. Code: bc120dx Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 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) ---------------------------------------------------------------------------------------- --- Fri 9 Apr 2004 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 30 17 J1827-0405 18 36 11 44.1 182.9 0.1 2.1 0 1 1 0 11 30 07 11 32 33 --- 18 38 28 44.1 183.6 0.2 2.7 137 F 1 1955 11 32 42 B1831-04 18 38 37 43.8 181.4 0.1 1.0 2 1 1 1955 11 32 33 11 34 42 --- 18 40 37 43.8 182.1 0.1 1.5 120 F 1 3674 11 34 51 J1827-0405 18 40 46 44.0 184.4 0.2 3.3 2 1 1 3674 11 34 42 11 36 21 --- 18 42 16 44.0 185.0 0.2 3.7 90 F 1 4996 11 36 30 B1831-04 18 42 26 43.8 182.7 0.1 2.0 2 1 1 4996 11 36 21 11 38 30 --- 18 44 26 43.7 183.4 0.2 2.5 120 F 1 6715 11 38 40 J1827-0405 18 44 35 44.0 185.8 0.3 4.3 2 1 1 6715 11 38 30 11 40 09 --- 18 46 05 43.9 186.3 0.3 4.7 90 F 1 8037 11 40 19 B1831-04 18 46 14 43.7 184.0 0.2 3.0 2 1 1 8037 11 40 09 11 42 18 --- 18 48 14 43.7 184.7 0.2 3.5 120 F 1 9755 11 42 28 J1827-0405 18 48 24 43.9 187.1 0.3 5.3 2 1 1 9755 11 42 18 11 43 57 --- 18 49 54 43.9 187.6 0.4 5.7 90 F 1 11077 11 44 07 B1831-04 18 50 03 43.7 185.3 0.3 4.0 2 1 1 11077 11 43 57 11 46 06 --- 18 52 03 43.6 186.0 0.3 4.5 120 F 1 12796 11 46 16 J1827-0405 18 52 13 43.8 188.4 0.4 6.3 2 1 1 12796 11 46 06 11 47 45 --- 18 53 43 43.8 188.9 0.4 6.6 90 F 1 14118 11 47 55 B1831-04 18 53 52 43.6 186.6 0.3 4.9 2 1 1 14118 11 47 45 11 49 54 --- 18 55 52 43.5 187.3 0.4 5.5 120 F 1 15836 11 50 04 J1827-0405 18 56 01 43.7 189.7 0.5 7.2 2 1 1 15836 11 49 54 11 51 33 --- 18 57 31 43.6 190.2 0.5 7.6 90 F 1 17158 11 51 43 B1831-04 18 57 40 43.5 187.9 0.4 5.9 2 1 2 17158 11 51 33 11 53 42 --- 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) ---------------------------------------------------------------------------------------- --- Fri 9 Apr 2004 Day 100 --- 11 53 52 J1827-0405 18 59 50 43.6 191.0 0.5 8.2 2 1 2 15439 11 53 42 11 55 21 --- 19 01 20 43.5 191.5 0.6 8.6 90 R 1 14118 11 55 31 B1831-04 19 01 29 43.4 189.2 0.4 6.9 2 1 2 14118 11 55 21 11 57 30 --- 19 03 29 43.3 189.9 0.5 7.4 120 R 1 12399 11 57 40 J1827-0405 19 03 38 43.4 192.3 0.6 9.2 2 1 2 12399 11 57 30 11 59 09 --- 19 05 08 43.4 192.8 0.6 9.5 90 R 1 11078 11 59 19 B1831-04 19 05 18 43.3 190.5 0.5 7.8 2 1 2 11078 11 59 09 12 01 18 --- 19 07 18 43.2 191.2 0.5 8.4 120 R 1 9359 12 01 28 J1827-0405 19 07 27 43.3 193.6 0.7 10.1 2 1 2 9359 12 01 18 12 02 57 --- 19 08 57 43.2 194.1 0.7 10.5 90 R 1 8038 12 03 07 B1831-04 19 09 06 43.1 191.8 0.6 8.8 2 1 2 8038 12 02 57 12 05 06 --- 19 11 06 43.0 192.5 0.6 9.3 120 R 1 6319 12 05 16 J1827-0405 19 11 16 43.1 194.9 0.7 11.1 2 1 2 6319 12 05 06 12 06 45 --- 19 12 46 43.0 195.4 0.7 11.4 90 R 1 4998 12 06 55 B1831-04 19 12 55 43.0 193.1 0.6 9.8 2 1 2 4998 12 06 45 12 08 54 --- 19 14 55 42.9 193.8 0.7 10.3 120 R 1 3279 12 09 04 J1827-0405 19 15 04 42.9 196.1 0.8 12.0 2 1 2 3279 12 08 54 12 10 33 --- 19 16 34 42.8 196.6 0.8 12.4 90 R 1 1958 12 10 43 B1831-04 19 16 44 42.8 194.4 0.7 10.7 2 1 2 1958 12 10 33 12 12 42 --- 19 18 44 42.7 195.0 0.7 11.2 120 R 1 239 12 12 52 J1827-0405 19 18 53 42.7 197.4 0.8 12.9 2 1 3 239 12 12 42 12 14 21 --- 19 20 23 42.6 197.9 0.9 13.3 90 F 1 1561 12 14 31 B1831-04 19 20 32 42.6 195.6 0.8 11.6 2 1 3 1561 12 14 21 12 16 30 --- 19 22 32 42.5 196.3 0.8 12.1 120 F 1 3279 12 16 40 J1827-0405 19 22 42 42.5 198.7 0.9 13.8 2 1 3 3279 12 16 30 12 18 09 --- 19 24 12 42.4 199.1 0.9 14.2 90 F 1 4600 12 18 19 B1831-04 19 24 21 42.4 196.9 0.8 12.6 2 1 3 4600 12 18 09 12 20 18 --- 19 26 21 42.3 197.6 0.9 13.0 120 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) ---------------------------------------------------------------------------------------- --- Fri 9 Apr 2004 Day 100 --- 12 20 28 J1827-0405 19 26 30 42.2 199.9 1.0 14.7 2 1 3 6318 12 20 18 12 21 57 --- 19 28 00 42.1 200.4 1.0 15.1 90 F 1 7640 12 22 07 B1831-04 19 28 09 42.2 198.1 0.9 13.5 2 1 3 7640 12 21 57 12 24 06 --- 19 30 09 42.1 198.8 0.9 13.9 120 F 1 9358 12 24 16 J1827-0405 19 30 19 42.0 201.1 1.0 15.6 2 1 3 9358 12 24 06 12 25 45 --- 19 31 49 41.9 201.6 1.1 16.0 90 F 1 10679 12 25 54 B1831-04 19 31 58 42.0 199.4 1.0 14.4 2 1 3 10679 12 25 45 12 27 54 --- 19 33 58 41.9 200.0 1.0 14.8 120 F 1 12397 12 28 03 J1827-0405 19 34 07 41.7 202.4 1.1 16.5 2 1 3 12397 12 27 54 12 29 33 --- 19 35 37 41.6 202.8 1.1 16.9 90 F 1 13718 12 29 42 B1831-04 19 35 46 41.7 200.6 1.0 15.3 2 1 3 13718 12 29 33 12 31 42 --- 19 37 46 41.6 201.3 1.1 15.7 120 F 1 15436 12 31 51 J1827-0405 19 37 56 41.4 203.6 1.2 17.4 2 1 3 15436 12 31 42 12 33 21 --- 19 39 26 41.3 204.0 1.2 17.7 90 F 1 16757 12 33 30 B1831-04 19 39 35 41.5 201.8 1.1 16.2 2 1 4 16757 12 33 21 12 35 30 --- 19 41 35 41.3 202.5 1.1 16.6 120 R 1 16726 12 35 39 J1827-0405 19 41 44 41.2 204.8 1.2 18.3 2 1 4 16726 12 35 30 12 37 09 --- 19 43 14 41.0 205.2 1.3 18.6 90 R 1 15405 12 37 18 B1831-04 19 43 23 41.2 203.1 1.1 17.0 2 1 4 15405 12 37 09 12 39 18 --- 19 45 23 41.1 203.7 1.2 17.5 120 R 1 13687 12 39 27 J1827-0405 19 45 33 40.9 206.0 1.3 19.1 2 1 4 13687 12 39 18 12 40 57 --- 19 47 03 40.7 206.4 1.3 19.4 90 R 1 12367 12 41 06 B1831-04 19 47 12 40.9 204.3 1.2 17.9 2 1 4 12367 12 40 57 12 43 06 --- 19 49 12 40.8 204.9 1.2 18.3 120 R 1 10649 12 43 15 J1827-0405 19 49 21 40.5 207.1 1.4 19.9 2 1 4 10649 12 43 06 12 44 45 --- 19 50 51 40.4 207.6 1.4 20.3 90 R 1 9328 12 44 54 B1831-04 19 51 00 40.6 205.4 1.3 18.7 2 1 4 9328 12 44 45 12 46 54 --- 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) ---------------------------------------------------------------------------------------- --- Fri 9 Apr 2004 Day 100 --- 12 47 03 J1827-0405 19 53 10 40.2 208.3 1.4 20.8 2 1 4 7611 12 46 54 12 48 33 --- 19 54 40 40.1 208.8 1.4 21.1 90 R 1 6290 12 48 42 B1831-04 19 54 49 40.3 206.6 1.3 19.6 2 1 4 6290 12 48 33 12 50 41 --- 19 56 49 40.1 207.2 1.4 20.0 120 R 1 4573 12 50 51 J1827-0405 19 56 58 39.9 209.5 1.5 21.6 2 1 4 4573 12 50 41 12 52 20 --- 19 58 28 39.7 209.9 1.5 21.9 90 R 1 3253 12 52 30 B1831-04 19 58 37 40.0 207.8 1.4 20.4 2 1 4 3253 12 52 20 12 54 29 --- 20 00 37 39.8 208.4 1.4 20.8 120 R 1 1536 12 54 38 J1827-0405 20 00 47 39.5 210.6 1.5 22.4 2 1 4 1536 12 54 29 12 56 08 --- 20 02 17 39.4 211.1 1.6 22.7 90 R 1 216 12 56 17 B1831-04 20 02 26 39.7 208.9 1.5 21.2 2 1 5 216 12 56 08 12 58 17 --- 20 04 26 39.5 209.5 1.5 21.6 120 F 1 1933 12 58 26 J1827-0405 20 04 35 39.1 211.7 1.6 23.2 2 1 5 1933 12 58 17 12 59 56 --- 20 06 05 39.0 212.2 1.6 23.5 90 F 1 3253 13 00 05 B1831-04 20 06 14 39.3 210.1 1.5 22.0 2 1 5 3253 12 59 56 13 02 05 --- 20 08 14 39.1 210.7 1.6 22.4 120 F 1 4970 13 02 14 J1827-0405 20 08 23 38.8 212.9 1.7 23.9 2 1 5 4970 13 02 05 13 03 44 --- 20 09 53 38.6 213.3 1.7 24.2 90 F 1 6289 13 03 53 B1831-04 20 10 02 38.9 211.2 1.6 22.8 2 1 5 6289 13 03 44 13 05 53 --- 20 12 02 38.7 211.8 1.6 23.2 120 F 1 8006 13 06 02 J1827-0405 20 12 12 38.4 214.0 1.7 24.7 2 1 5 8006 13 05 53 13 07 31 --- 20 13 42 38.2 214.4 1.8 25.0 90 F 1 9326 13 07 41 B1831-04 20 13 51 38.6 212.3 1.7 23.6 2 1 5 9326 13 07 31 13 09 40 --- 20 15 51 38.4 212.9 1.7 24.0 120 F 1 11042 13 09 49 J1827-0405 20 16 00 38.0 215.1 1.8 25.4 2 1 5 11042 13 09 40 13 11 19 --- 20 17 30 37.8 215.5 1.8 25.7 90 F 1 12362 13 11 28 B1831-04 20 17 39 38.2 213.4 1.7 24.3 2 1 5 12362 13 11 19 13 13 28 --- 20 19 39 38.0 214.0 1.8 24.7 120 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) ---------------------------------------------------------------------------------------- --- Fri 9 Apr 2004 Day 100 --- 13 13 37 J1827-0405 20 19 48 37.6 216.1 1.9 26.2 2 1 5 14078 13 13 28 13 15 07 --- 20 21 18 37.4 216.6 1.9 26.5 90 F 1 15397 13 15 16 B1831-04 20 21 27 37.8 214.5 1.8 25.1 2 1 5 15397 13 15 07 13 17 16 --- 20 23 27 37.6 215.1 1.8 25.5 120 F 1 17114 13 17 25 J1827-0405 20 23 37 37.1 217.2 1.9 26.9 2 1 6 17114 13 17 16 13 18 54 --- 20 25 07 37.0 217.6 2.0 27.2 90 R 1 16767 13 19 04 B1831-04 20 25 16 37.4 215.6 1.8 25.8 2 1 6 16767 13 18 54 13 21 03 --- 20 27 16 37.2 216.2 1.9 26.2 120 R 1 15051 13 21 12 J1827-0405 20 27 25 36.7 218.3 2.0 27.6 2 1 6 15051 13 21 03 13 22 42 --- 20 28 55 36.5 218.7 2.0 27.9 90 R 1 13733 13 22 51 B1831-04 20 29 04 37.0 216.7 1.9 26.5 2 1 6 13733 13 22 42 13 24 51 --- 20 31 04 36.7 217.2 1.9 26.9 120 R 1 12017 13 25 00 J1827-0405 20 31 13 36.3 219.3 2.1 28.3 2 1 6 12017 13 24 51 13 26 30 --- 20 32 43 36.1 219.7 2.1 28.5 90 R 1 10698 13 26 39 B1831-04 20 32 52 36.5 217.7 2.0 27.2 2 1 6 10698 13 26 30 13 28 38 --- 20 34 52 36.3 218.3 2.0 27.6 120 R 1 8983 13 28 47 J1827-0405 20 35 01 35.8 220.3 2.1 28.9 2 1 6 8983 13 28 38 13 30 17 --- 20 36 31 35.6 220.7 2.1 29.2 90 R 1 7665 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 38.662784 -04 28 40.46266 *-04 26 16.19498 -04 26 17.35095 From catalog imbedded in main SCHED input file. * J1827-0405 18 25 06.481626 * 18 27 45.040424 18 27 58.108393 -04 07 39.91469 *-04 05 44.57841 -04 05 48.21483 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) B1831-04 100.3 J1827-0405 101.9 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