COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: BW083B / Central component of 0957+561 / Winn et al. Exp. Code: BW083B Schedule Version: 1.00 Processed by SCHED version: 6.02 July 2005 PI: Joshua N. Winn Address: Harvard-Smithsonian Center for Astrophysics 60 Garden St. MS-51 Cambridge, MA 02138 Phone: +1-617-384-9663 (w) / +1-617-666-2341 (h) EMAIL: jwinn@cfa.harvard.edu Fax: +1-617-495-7093 Phone during observation: +1-617-384-9663 (w) / +1-617-666-2341 (h) Observing mode: Standard 21cm band, 256-8-2 Notes: 256 Mbps has been approved for BW083 fringe finder: J0927+3902 Schedule for GBT_VLBA (Code Gb ) Page 2 BW083B / Central component of 0957+561 / Winn et al. 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 30 Dec 2005 Day 364 --- Next scan frequencies: 1400.49 1400.49 1408.49 1408.49 1416.49 1416.49 1424.49 1424.49 Next BBC frequencies: 649.51 649.51 641.51 641.51 633.51 633.51 625.51 625.51 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 08 00 00 J1035+5628 09 16 06 67.7 29.7 -1.3 -135.5 0 1 1 0 Stopped 08 11 00 =1031+567 09 27 08 68.7 26.6 -1.1 -140.6 660 S 1 0 08 11 00 J0929+5013 09 27 08 78.2 2.0 0.0 -177.5 -73 1 1 0 08 11 00 08 13 00 =0925+504 09 29 08 78.2 0.4 0.0 -179.5 47 F 1 1600 08 11 08 08 13 00 GL0957 09 29 08 71.7 14.7 -0.5 -159.2 -56 1 1 1600 08 13 00 08 26 00 --- 09 42 10 72.3 9.1 -0.3 -167.3 724 F 1 12000 08 13 00 08 26 00 J0929+5013 09 42 10 78.0 -9.7 0.2 168.1 -63 1 1 12000 08 26 00 08 28 00 =0925+504 09 44 10 78.0 -11.2 0.2 166.3 57 F 1 13600 08 26 00 08 28 00 GL0957 09 44 10 72.3 8.2 -0.3 -168.6 -64 1 2 13600 08 28 00 08 41 00 --- 09 57 13 72.6 2.1 -0.1 -177.0 716 R 1 11200 08 28 00 08 41 00 J0929+5013 09 57 13 77.3 -20.3 0.5 154.8 -69 1 2 11200 08 41 00 08 43 00 =0925+504 09 59 13 77.1 -21.6 0.5 153.2 51 R 1 9600 08 41 00 08 43 00 J1035+5628 09 59 13 71.0 15.5 -0.6 -157.7 -94 1 2 9600 Stopped 08 46 00 =1031+567 10 02 13 71.2 14.4 -0.6 -159.4 86 S 1 9600 08 46 00 J0929+5013 10 02 13 76.9 -23.5 0.5 150.7 -95 1 2 9600 08 46 00 08 48 00 =0925+504 10 04 14 76.7 -24.8 0.6 149.2 25 R 1 8000 08 46 08 08 48 00 GL0957 10 04 14 72.6 -1.1 0.0 178.4 -71 1 3 8000 08 48 00 09 01 00 --- 10 17 16 72.4 -7.2 0.3 169.9 709 F 1 2400 08 48 00 09 01 00 J0929+5013 10 17 16 75.5 -31.8 0.8 139.8 -73 1 3 2400 09 01 00 09 03 00 =0925+504 10 19 16 75.3 -32.8 0.8 138.5 47 F 1 4000 09 01 00 09 03 00 GL0957 10 19 16 72.3 -8.1 0.3 168.7 -73 1 3 4000 09 03 00 09 16 00 --- 10 32 18 71.8 -13.8 0.5 160.5 707 F 1 14400 09 03 00 09 16 00 J0929+5013 10 32 18 73.8 -38.3 1.0 130.7 -73 1 3 14400 09 16 00 09 18 00 =0925+504 10 34 19 73.6 -39.0 1.1 129.6 47 F 1 16000 09 16 00 Schedule for GBT_VLBA (Code Gb ) Page 3 BW083B / Central component of 0957+561 / Winn et al. 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 30 Dec 2005 Day 364 --- 09 18 00 J0927+3902 10 34 19 77.0 -82.2 1.1 87.3 -104 1 4 16000 09 18 00 09 25 00 =0923+392 10 41 20 75.6 -81.9 1.2 86.5 316 R 1 13600 09 18 00 09 25 00 J1035+5628 10 41 20 72.0 -2.6 0.1 176.3 -164 1 4 13600 Stopped 09 35 00 =1031+567 10 51 21 71.8 -7.0 0.3 170.0 436 S 1 13600 09 35 00 J0929+5013 10 51 21 71.4 -44.3 1.4 121.3 -94 1 4 13600 09 35 00 09 37 00 =0925+504 10 53 22 71.1 -44.8 1.4 120.4 26 R 1 12000 09 35 08 09 37 00 GL0957 10 53 22 70.6 -22.1 0.9 148.3 -70 1 4 12000 09 37 00 09 50 00 --- 11 06 24 69.5 -26.5 1.1 141.5 710 R 1 1600 09 37 00 09 50 00 J0929+5013 11 06 24 69.2 -47.7 1.6 115.2 -67 1 4 1600 09 50 00 09 52 00 =0925+504 11 08 24 68.9 -48.0 1.6 114.5 53 R 1 0 09 50 00 09 52 00 GL0957 11 08 24 69.3 -27.1 1.1 140.5 -67 1 5 0 09 52 00 10 05 00 --- 11 21 26 68.1 -30.8 1.3 134.3 713 F 1 10400 09 52 00 10 05 00 J0929+5013 11 21 26 67.0 -50.2 1.9 110.0 -64 1 5 10400 10 05 00 10 07 00 =0925+504 11 23 27 66.7 -50.4 1.9 109.4 56 F 1 12000 10 05 00 10 07 00 J1035+5628 11 23 27 70.3 -19.9 0.8 151.1 -83 1 5 12000 Stopped 10 10 00 =1031+567 11 26 27 70.1 -21.0 0.8 149.5 97 S 1 12000 10 10 00 J0929+5013 11 26 27 66.3 -50.8 1.9 108.5 -82 1 5 12000 10 10 00 10 12 00 =0925+504 11 28 28 65.9 -51.1 2.0 107.8 38 F 1 13600 10 10 08 10 12 00 GL0957 11 28 28 67.4 -32.6 1.4 131.3 -63 1 6 13600 10 12 00 10 25 00 --- 11 41 30 65.9 -35.5 1.7 125.9 717 R 1 11200 10 12 00 10 25 00 J0929+5013 11 41 30 63.9 -52.4 2.2 104.1 -60 1 6 11200 10 25 00 10 27 00 =0925+504 11 43 30 63.6 -52.6 2.2 103.6 60 R 1 9600 10 25 00 10 27 00 GL0957 11 43 30 65.7 -35.9 1.7 125.1 -60 1 7 9600 10 27 00 10 40 00 --- 11 56 32 64.2 -38.2 1.9 120.3 720 F 1 800 10 27 00 10 40 00 J0929+5013 11 56 32 61.6 -53.5 2.4 100.2 -58 1 7 800 10 40 00 10 42 00 =0925+504 11 58 32 61.3 -53.6 2.5 99.7 62 F 1 2400 10 40 00 10 42 00 J0927+3902 11 58 32 60.7 -76.8 2.5 79.0 -71 1 7 2400 10 42 00 10 49 00 =0923+392 12 05 34 59.4 -76.3 2.6 78.4 349 F 1 8000 10 42 00 Schedule for GBT_VLBA (Code Gb ) Page 4 BW083B / Central component of 0957+561 / Winn et al. 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 30 Dec 2005 Day 364 --- 10 49 00 3C286 12 05 34 70.7 107.8 -1.4 -59.9 -339 1 7 8000 10 49 00 10 58 00 --- 12 14 35 72.3 111.0 -1.3 -58.1 201 F 1 15200 10 49 00 10 58 00 J1035+5628 12 14 35 65.7 -34.2 1.7 127.2 -274 1 7 15200 Stopped 11 08 00 =1031+567 12 24 37 64.5 -36.1 1.8 123.4 326 S 1 15200 11 08 00 J0929+5013 12 24 37 57.1 -54.6 2.9 93.9 -63 1 7 15200 11 08 00 11 10 00 =0925+504 12 26 37 56.8 -54.7 2.9 93.5 57 F 1 16800 11 08 08 11 10 00 GL0957 12 26 37 60.4 -42.1 2.4 110.6 -53 1 8 16800 11 10 00 11 23 00 --- 12 39 39 58.6 -43.3 2.6 106.9 727 R 1 8000 11 10 00 11 23 00 J0929+5013 12 39 39 54.7 -54.8 3.2 90.9 -51 1 8 8000 11 23 00 11 25 00 =0925+504 12 41 39 54.4 -54.8 3.2 90.5 69 R 1 6400 11 23 00 11 25 00 GL0957 12 41 39 58.4 -43.4 2.7 106.4 -51 1 9 6400 11 25 00 11 38 00 --- 12 54 42 56.6 -44.3 2.9 103.0 729 F 1 4000 11 25 00 11 38 00 J0929+5013 12 54 42 52.3 -54.8 3.4 88.0 -49 1 9 4000 11 38 00 11 40 00 =0925+504 12 56 42 52.0 -54.7 3.5 87.6 71 F 1 5600 11 38 00 11 40 00 J1035+5628 12 56 42 60.6 -40.6 2.4 112.7 -56 1 9 5600 Stopped 11 43 00 =1031+567 12 59 42 60.2 -40.9 2.4 111.8 124 S 1 5600 11 43 00 J0929+5013 12 59 42 51.5 -54.7 3.5 87.1 -55 1 9 5600 11 43 00 11 45 00 =0925+504 13 01 43 51.2 -54.7 3.5 86.7 65 F 1 7200 11 43 08 11 45 00 GL0957 13 01 43 55.6 -44.6 3.0 101.2 -49 1 9 7200 11 45 00 11 58 00 --- 13 14 45 53.8 -45.2 3.2 98.1 731 F 1 17600 11 45 00 11 58 00 J0929+5013 13 14 45 49.1 -54.4 3.8 84.4 -47 1 10 17600 11 58 00 12 00 00 =0925+504 13 16 45 48.8 -54.4 3.8 84.1 73 R 1 16000 11 58 00 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: vlba.21cm Matches group gbt21cm in /home/arana/cwalker/sched/catalogs/freq.dat LO1=4.300, LO2=12.75, LO3=10.5 Setup group: 12 Station: GBT_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 used at high density at 160.000 ips. Time per pass is 22.00 minutes. 1st LO= 2050.00 2050.00 2050.00 2050.00 2050.00 2050.00 2050.00 2050.00 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 The following frequency sets based on this setup were used. Frequency Set: 12 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= 649.51 649.51 641.51 641.51 633.51 633.51 625.51 625.51 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 SOURCE LIST -- BW083B / Central component of 0957+561 / Winn et al. 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) Error (B1950) (J2000) (Date) (mas) * GL0957 09 57 57.423100 * 10 01 20.848640 10 01 47.160568 0.00 56 08 16.93624 * 55 53 50.05350 55 51 56.14837 0.00 From catalog imbedded in main SCHED input file. 2.383 scan hours, 151.024 baseline hours above horizon. * J0927+3902 09 23 55.319212 * 09 27 03.013933 09 27 26.932639 0.26 0923+392 39 15 23.56648 * 39 02 20.85188 39 00 42.23379 0.40 4C39.25 /home/arana/cwalker/sched/catalogs/sources.vlba J0927+39 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.233 scan hours, 12.668 baseline hours above horizon. * J0929+5013 09 25 51.973730 * 09 29 15.440211 09 29 41.639141 0.35 0925+504 50 26 44.31094 * 50 13 35.98996 50 11 54.65888 0.43 /home/arana/cwalker/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.567 scan hours, 26.499 baseline hours above horizon. * J1035+5628 10 31 55.954869 * 10 35 07.040022 10 35 31.669300 0.59 1031+567 56 44 18.17883 * 56 28 46.79612 56 26 42.77274 0.47 J1035+56 /home/arana/cwalker/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.000 scan hours, 0.000 baseline hours above horizon. J1331+3030 13 28 49.657757 * 13 31 08.288049 13 31 24.655304 0.37 1328+307 30 45 58.64062 * 30 30 32.95926 30 28 28.52950 0.47 * 3C286 /home/arana/cwalker/sched/catalogs/sources.vlba J1331+30 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.150 scan hours, 6.929 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) GL0957 130.6 J0927+3902 140.9 J0929+5013 137.2 J1035+5628 126.0 3C286 91.0 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