COVER INFORMATION Station: MEDICINA (Code Mc ) Experiment: GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002 Exp. Code: GL026B Schedule Version: 1.00 Processed by SCHED version: Release of 02 July 2002 PI: Colin Lonsdale Address: MIT Haystack Observatory Off Route 40 Westford, MA 01886 Phone: 508-692-4764 (work) or 603-672-1268 (home) EMAIL: cjl@dopey.haystack.edu Fax: 617-981-0590 Phone during observation: 508-692-4764 (work) or 603-672-1268 (home) Observing mode: 256-8-2 Notes: Primary fringe finder 1613+341 Schedule for MEDICINA (Code Mc ) Page 2 GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002 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). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sat 16 Nov 2002 Day 320 --- Next scan frequencies: 1632.99 1632.99 1640.99 1640.99 1648.99 1648.99 1656.99 1656.99 Next BBC frequencies: 337.99 337.99 345.99 345.99 353.99 353.99 361.99 361.99 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 04 30 00 1613+341 08 56 55 11.5 412.9 -7.3 -43.4 0 1 1 0 04 30 00 04 36 00 --- 09 02 56 12.4 413.8 -7.2 -44.1 360 F 1 4800 04 36 00 ARP220 09 02 56 10.8 427.6 -6.5 -46.0 -20 1 1 4800 04 36 00 04 52 00 --- 09 18 59 13.5 430.2 -6.3 -47.0 940 F 1 17600 05 05 00 ARP220 09 32 01 15.7 432.3 -6.1 -47.8 774 1 2 17600 05 05 00 05 27 00 --- 09 54 04 19.5 435.8 -5.7 -48.9 1320 R 1 0 05 40 00 ARP220 10 07 07 21.8 437.9 -5.5 -49.5 773 1 3 0 05 40 00 06 02 00 --- 10 29 10 25.6 441.5 -5.1 -50.3 1320 F 1 17600 06 15 00 ARP220 10 42 12 27.9 443.6 -4.9 -50.6 773 1 4 17600 06 15 00 06 37 00 --- 11 04 16 31.9 447.3 -4.5 -50.9 1320 R 1 0 06 50 00 1613+341 11 17 18 33.8 433.1 -4.9 -55.6 759 1 5 0 06 50 00 06 56 00 --- 11 23 19 34.8 433.9 -4.8 -55.9 360 F 1 4800 06 56 00 ARP220 11 23 19 35.2 450.6 -4.2 -51.0 -24 1 5 4800 06 56 00 07 12 00 --- 11 39 22 38.1 453.5 -3.9 -50.9 936 F 1 17600 07 25 00 ARP220 11 52 24 40.4 455.9 -3.7 -50.7 773 1 6 17600 07 25 00 07 47 00 --- 12 14 27 44.3 460.3 -3.3 -49.9 1320 R 1 0 08 00 00 ARP220 12 27 30 46.6 463.1 -3.1 -49.2 773 1 7 0 08 00 00 08 22 00 --- 12 49 33 50.4 468.1 -2.8 -47.6 1320 F 1 17600 08 35 00 ARP220 13 02 35 52.6 471.4 -2.5 -46.4 774 1 8 17600 08 35 00 08 57 00 --- 13 24 39 56.1 477.5 -2.2 -43.6 1320 R 1 0 09 10 00 1613+341 13 37 41 58.5 455.5 -2.6 -59.1 749 1 9 0 09 10 00 09 16 00 --- 13 43 42 59.5 456.7 -2.5 -58.9 360 F 1 4800 09 16 00 ARP220 13 43 42 59.1 483.6 -1.9 -40.4 -38 1 9 4800 09 16 00 09 32 00 --- 13 59 45 61.4 489.4 -1.6 -36.9 922 F 1 17600 Schedule for MEDICINA (Code Mc ) Page 3 GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002 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). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sat 16 Nov 2002 Day 320 --- 09 45 00 ARP220 14 12 47 63.1 494.6 -1.4 -33.6 771 1 10 17600 09 45 00 10 07 00 --- 14 34 50 65.6 504.7 -1.0 -26.7 1320 R 1 0 10 15 00 ARP220 14 42 52 66.4 508.8 -0.9 -23.7 473 1 11 0 10 15 00 10 37 00 --- 15 04 55 68.1 521.2 -0.5 -14.5 1320 F 1 17600 10 45 00 ARP220 15 12 57 68.5 526.1 -0.4 -10.8 472 1 12 17600 10 45 00 11 07 00 --- 15 35 00 69.0 540.0 0.0 0.0 1320 R 1 0 11 15 00 1613+341 15 43 02 78.1 507.5 -0.5 -27.6 435 1 13 0 11 15 00 11 21 00 --- 15 49 03 78.6 513.1 -0.4 -22.9 360 F 1 4800 11 21 00 ARP220 15 49 03 68.8 548.9 0.2 6.9 -50 1 13 4800 11 21 00 11 37 00 --- 16 05 05 68.1 558.7 0.5 14.5 910 F 1 17600 11 45 00 ARP220 16 13 06 67.6 563.4 0.6 18.0 472 1 14 17600 11 45 00 12 07 00 --- 16 35 10 65.7 575.2 1.0 26.6 1320 R 1 0 ----------- Tape Change ------------ 12 30 00 1613+341 16 58 14 76.6 583.5 0.7 36.4 1356 1 1 0 12 30 00 12 36 00 --- 17 04 15 75.8 587.6 0.8 39.5 360 F 1 4800 12 36 00 ARP220 17 04 15 62.2 588.2 1.5 35.4 -29 1 1 4800 12 36 00 12 52 00 --- 17 20 17 60.0 594.3 1.8 39.1 931 F 1 17600 13 00 00 1613+341 17 28 19 72.3 600.7 1.2 48.7 453 1 2 17600 13 00 00 13 03 00 --- 17 31 19 71.9 602.0 1.3 49.6 180 R 1 15200 13 03 00 ARP220 17 31 19 58.3 598.1 1.9 41.3 -29 1 2 15200 13 03 00 13 22 00 --- 17 50 22 55.4 603.9 2.3 44.3 1111 R 1 0 13 23 00 ARP220 17 51 23 55.2 604.2 2.3 44.4 58 1 3 0 13 23 00 13 45 00 --- 18 13 26 51.6 610.1 2.6 47.0 1320 F 1 17600 13 47 00 ARP220 18 15 27 51.2 610.6 2.7 47.2 117 1 4 17600 13 47 00 14 09 00 --- 18 37 30 47.5 615.8 3.0 48.9 1320 R 1 0 14 11 00 ARP220 18 39 30 47.1 616.3 3.1 49.0 117 1 5 0 14 11 00 14 33 00 --- 19 01 34 43.3 620.9 3.4 50.1 1320 F 1 17600 14 40 00 1516+193 19 08 35 36.3 621.9 3.9 48.5 404 1 6 17600 14 40 00 14 43 00 --- 19 11 36 35.7 622.5 3.9 48.6 180 R 1 15200 Schedule for MEDICINA (Code Mc ) Page 4 GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002 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). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sat 16 Nov 2002 Day 320 --- 14 43 00 ARP220 19 11 36 41.5 622.9 3.6 50.5 -14 1 6 15200 14 43 00 15 02 00 --- 19 30 39 38.1 626.5 3.9 50.9 1126 R 1 0 15 05 00 ARP220 19 33 39 37.6 627.1 4.0 50.9 177 1 7 0 15 05 00 15 27 00 --- 19 55 43 33.7 631.0 4.3 51.0 1320 F 1 17600 15 30 00 ARP220 19 58 43 33.1 631.5 4.4 51.0 177 1 8 17600 15 30 00 15 52 00 --- 20 20 47 29.2 635.2 4.8 50.7 1320 R 1 0 15 55 00 ARP220 20 23 48 28.7 635.7 4.8 50.7 177 1 9 0 15 55 00 16 17 00 --- 20 45 51 24.8 639.3 5.2 50.1 1320 F 1 17600 16 20 00 1516+193 20 48 52 18.5 639.5 5.5 48.2 165 1 10 17600 16 20 00 16 26 00 --- 20 54 53 17.4 640.5 5.6 48.1 360 R 1 12800 16 26 00 ARP220 20 54 53 23.2 640.8 5.3 49.8 -14 1 10 12800 16 26 00 16 42 00 --- 21 10 55 20.4 643.4 5.6 49.1 946 R 1 0 16 45 00 ARP220 21 13 56 19.9 643.8 5.6 49.0 177 1 11 0 16 45 00 17 07 00 --- 21 35 59 16.1 647.4 6.0 47.9 1320 F 1 17600 17 10 00 ARP220 21 39 00 15.6 647.9 6.1 47.7 177 1 12 17600 17 10 00 17 32 00 --- 22 01 03 11.9 651.4 6.4 46.4 1320 R 1 0 17 35 00 1613+341 22 04 04 24.8 654.5 5.8 51.7 152 1 13 0 17 35 00 17 38 00 --- 22 07 04 24.3 654.9 5.9 51.4 180 F 1 2400 17 38 00 ARP220 22 07 04 10.9 652.4 6.5 46.0 -29 1 13 2400 17 38 00 17 57 00 --- 22 26 08 7.8 655.5 6.9 44.6 1111 F 1 17600 18 00 00 ARP220 22 29 08 7.3 656.0 6.9 44.3 177 1 14 17600 18 00 00 18 22 00 --- 22 51 12 3.8 659.7 7.3 D 42.5 0 R 1 0 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: arp220.set Matches group mc18cm in /usr/local/vlbi_sched/catalogs/freq.dat updated from Maccaferri (CR 2Dec00) Setup group: 3 Station: MEDICINA Total bit rate: 256 Format: MKIV1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 270.000 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 4 3 6 5 8 7 BBC SB= U U U U U U U U IF = 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on this setup were used. Frequency Set: 3 Setup file default. No pcal detection. LO sum= 1632.99 1632.99 1640.99 1640.99 1648.99 1648.99 1656.99 1656.99 BBC fr= 337.99 337.99 345.99 345.99 353.99 353.99 361.99 361.99 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off SOURCE LIST -- GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002 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) * ARP220 15 32 46.880196 * 15 34 57.224670 15 35 02.406600 23 40 07.99276 * 23 30 11.56400 23 29 43.00602 From catalog imbedded in main SCHED input file. * 1516+193 15 14 40.987286 * 15 16 56.797600 15 17 02.300133 19 43 10.96935 * 19 32 13.01900 19 31 41.16431 From catalog imbedded in main SCHED input file. * 1613+341 16 11 47.914510 * 16 13 41.064500 16 13 45.236673 34 20 19.83496 * 34 12 47.91000 34 12 27.67864 From catalog imbedded in main SCHED input file. * 3C286 13 28 49.657708 * 13 31 08.288000 13 31 14.112421 30 45 58.64136 * 30 30 32.96000 30 29 43.43295 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) ARP220 42.3 1516+193 38.4 1613+341 54.2 3C286 56.6 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