COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: bp116: the HSA for high T_b Exp. Code: BP116 Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Glenn Piner Address: Whittier College Dept. Physics and Astronomy 13406 E. Philadelphia St Whittier CA 90608 Phone: 562-464-4556 EMAIL: gpiner@whittier.edu Fax: 562-464-4514 Phone during observation: 562-464-4556 Observing mode: 256 Mbps Notes: Targets : 1637+574, 1642+690, 0133+476 Calibrators = CSOs: J1545+4751, J1815+6127, J0111+3906 Fringe finders : J1740+5211, J1849+6705, J0154+4743 Schedule for GBT_VLBA (Code Gb ) Page 2 bp116: the HSA for high T_b 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) ---------------------------------------------------------------------------------------- --- Mon 27 Dec 2004 Day 362 --- Next scan frequencies: 4960.49 4968.49 4976.49 4984.49 4992.49 5000.49 5008.49 5016.49 Next BBC frequencies: 639.51 631.51 623.51 615.51 607.51 599.51 591.51 583.51 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 17 00 00 J1545+4751 18 06 42 62.8 -58.2 2.4 97.1 0 1 1 0 17 00 00 17 04 00 =1543+480 18 10 43 62.2 -58.4 2.4 96.2 240 F 1 3200 17 05 10 1637+574 18 11 53 65.7 -31.4 1.6 130.9 -7 1 1 3200 17 05 10 17 14 10 --- 18 20 54 64.7 -33.2 1.7 127.3 533 F 1 10400 17 15 10 1642+690 18 21 55 56.7 -16.0 1.7 143.0 -1 1 1 10400 17 15 10 17 24 10 --- 18 30 56 56.1 -17.2 1.8 140.0 539 F 1 17600 17 26 10 J1545+4751 18 32 56 58.4 -58.9 2.8 91.6 18 1 2 17600 17 26 10 17 29 10 =1543+480 18 35 57 57.9 -58.9 2.8 91.1 180 R 1 15200 17 30 20 1637+574 18 37 07 62.9 -36.0 2.0 121.4 0 1 2 15200 17 30 20 17 39 50 --- 18 46 39 61.8 -37.4 2.1 118.2 570 R 1 7600 17 40 50 1642+690 18 47 39 55.1 -19.1 2.1 134.5 -2 1 2 7600 17 40 50 17 50 20 --- 18 57 10 54.5 -20.1 2.3 131.4 568 R 1 0 17 51 40 J1740+5211 18 58 31 70.7 -38.2 1.3 127.8 0 1 3 0 17 51 40 17 54 40 =1739+522 19 01 31 70.3 -39.0 1.3 126.4 180 F 1 2400 17 55 40 1637+574 19 02 31 59.9 -39.3 2.4 113.2 -1 1 3 2400 17 55 40 18 05 10 --- 19 12 03 58.7 -40.2 2.6 110.4 569 F 1 10000 18 06 10 1642+690 19 13 03 53.4 -21.7 2.5 126.5 -3 1 3 10000 18 06 10 18 15 40 --- 19 22 35 52.7 -22.5 2.7 123.6 567 F 1 17600 18 17 00 J1740+5211 19 23 55 67.4 -44.1 1.7 117.3 5 1 4 17600 18 17 00 18 20 00 =1739+522 19 26 55 67.0 -44.6 1.8 116.2 180 R 1 15200 18 21 10 1637+574 19 28 05 56.6 -41.5 2.8 105.9 9 1 4 15200 18 21 10 18 30 40 --- 19 37 37 55.4 -42.1 3.0 103.4 570 R 1 7600 18 31 40 1642+690 19 38 37 51.5 -23.7 2.9 118.9 -3 1 4 7600 18 31 40 18 41 10 --- 19 48 09 50.7 -24.3 3.1 116.2 567 R 1 0 Schedule for GBT_VLBA (Code Gb ) Page 3 bp116: the HSA for high T_b 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) ---------------------------------------------------------------------------------------- --- Mon 27 Dec 2004 Day 362 --- 18 43 10 J1815+6127 19 50 09 62.7 -24.7 1.6 136.7 54 1 5 0 18 43 10 18 46 10 =1815+614 19 53 10 62.5 -25.3 1.6 135.5 180 F 1 2400 18 47 20 1637+574 19 54 20 53.2 -42.9 3.3 99.3 9 1 5 2400 18 47 20 18 56 50 --- 20 03 51 51.9 -43.2 3.4 97.1 570 F 1 10000 18 58 00 1642+690 20 05 02 49.3 -25.3 3.4 111.5 8 1 5 10000 18 58 00 19 07 30 --- 20 14 33 48.5 -25.7 3.5 109.0 570 F 1 17600 19 09 30 J1740+5211 20 16 33 59.8 -50.1 2.6 101.5 47 1 6 17600 19 09 30 19 12 30 =1739+522 20 19 34 59.4 -50.3 2.6 100.7 180 R 1 15200 19 13 30 1637+574 20 20 34 49.7 -43.5 3.7 93.3 2 1 6 15200 19 13 30 19 23 00 --- 20 30 06 48.4 -43.6 3.9 91.2 570 R 1 7600 19 24 10 1642+690 20 31 16 47.1 -26.4 3.8 104.6 9 1 6 7600 19 24 10 19 33 40 --- 20 40 47 46.2 -26.7 4.0 102.1 570 R 1 0 19 34 50 J1849+6705 20 41 58 57.3 -19.9 1.9 136.8 7 1 7 0 19 34 50 19 37 50 =1849+670 20 44 58 57.1 -20.3 1.9 135.8 180 F 1 2400 19 39 20 1637+574 20 46 28 46.2 -43.5 4.1 87.8 19 1 7 2400 19 39 20 19 48 50 --- 20 56 00 44.9 -43.4 4.3 85.9 570 F 1 10000 19 50 00 1642+690 20 57 10 44.8 -27.0 4.3 98.1 11 1 7 10000 19 50 00 19 59 30 --- 21 06 42 43.9 -27.2 4.4 95.7 570 F 1 17600 20 00 20 1637+574 21 07 32 43.3 -43.2 4.5 83.6 -9 1 8 17600 20 00 20 20 06 30 --- 21 13 43 42.5 -43.1 4.6 82.4 361 R 1 12667 20 07 30 J1849+6705 21 14 43 54.9 -23.7 2.4 126.1 -7 1 8 12667 20 07 30 20 10 30 =1849+670 21 17 43 54.6 -24.0 2.5 125.2 173 R 1 10267 20 12 30 1637+574 21 19 44 41.7 -42.9 4.7 81.2 51 1 8 10267 20 12 30 20 22 00 --- 21 29 15 40.4 -42.6 4.8 79.4 570 R 1 2667 20 23 10 1642+690 21 30 26 41.8 -27.3 4.8 90.1 12 1 9 2667 20 23 10 20 32 40 --- 21 39 57 41.0 -27.3 5.0 87.9 570 F 1 4933 20 33 50 J1849+6705 21 41 07 52.7 -26.0 2.9 118.2 5 1 9 4933 20 33 50 20 36 50 =1849+670 21 44 08 52.5 -26.2 2.9 117.3 180 F 1 7333 Schedule for GBT_VLBA (Code Gb ) Page 4 bp116: the HSA for high T_b 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) ---------------------------------------------------------------------------------------- --- Mon 27 Dec 2004 Day 362 --- 20 38 50 1637+574 21 46 08 38.2 -42.0 5.1 76.2 47 1 9 7333 20 38 50 20 48 20 --- 21 55 40 37.0 -41.6 5.3 74.5 570 F 1 14933 20 49 30 1642+690 21 56 50 39.4 -27.2 5.2 84.0 14 1 10 14933 20 49 30 20 59 00 --- 22 06 21 38.6 -27.0 5.4 81.9 570 R 1 12667 21 00 05 J1849+6705 22 07 27 50.4 -27.7 3.3 110.8 0 1 10 12667 21 00 05 21 03 05 =1849+670 22 10 27 50.1 -27.8 3.4 110.0 180 R 1 10267 21 04 10 1642+690 22 11 32 38.1 -26.9 5.5 80.8 -1 1 10 10267 21 04 10 21 13 40 --- 22 21 04 37.3 -26.7 5.6 78.7 569 R 1 2667 21 16 40 J0111+3906 22 24 04 57.6 75.3 -2.8 -77.7 -22 1 10 2667 21 16 40 21 17 40 =0108+388 22 25 04 57.8 75.4 -2.8 -77.8 38 R 1 1867 21 18 30 0133+476 22 25 55 54.5 58.8 -3.2 -87.4 -10 1 11 1867 21 18 30 21 28 00 --- 22 35 26 56.1 58.9 -3.0 -89.1 560 F 1 5733 21 28 35 J0154+4743 22 36 01 53.1 58.9 -3.3 -85.8 -1 1 11 5733 21 28 35 21 32 35 =0151+474 22 40 02 53.8 58.9 -3.3 -86.5 239 F 1 8933 21 33 10 0133+476 22 40 37 56.9 58.9 -2.9 -90.0 -1 1 12 8933 21 33 10 21 51 10 --- 22 58 40 59.9 58.7 -2.6 -93.5 1079 R 1 11867 21 51 45 J0154+4743 22 59 15 57.0 59.1 -2.9 -89.9 -1 1 12 11867 21 51 45 21 54 45 =0151+474 23 02 16 57.5 59.1 -2.9 -90.5 179 R 1 9467 21 55 20 0133+476 23 02 51 60.6 58.6 -2.6 -94.4 -1 1 13 9467 21 55 20 22 14 20 --- 23 21 54 63.8 57.8 -2.3 -98.6 1139 F 1 5733 22 14 55 0133+476 23 22 29 63.9 57.8 -2.2 -98.7 12 1 14 5733 22 14 55 22 33 55 --- 23 41 32 67.0 56.3 -1.9 -103.6 1140 R 1 14267 22 34 30 J0154+4743 23 42 07 64.2 58.0 -2.2 -98.8 0 1 14 14267 22 34 30 22 37 30 =0151+474 23 45 08 64.7 57.8 -2.2 -99.6 180 R 1 11867 ----------- Tape Change ------------ 22 38 00 0133+476 23 45 38 67.7 55.9 -1.9 -104.8 -6 2 1 11867 22 38 00 23 00 00 --- 00 07 41 71.2 52.6 -1.5 -112.0 1314 F 1 5733 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/filehost/cwalker/sched/setups/v6cm-256-8-2-L.set Matches group gbt6cm in /home/filehost/cwalker/sched/catalogs/freq.dat LO1=7.850, LO2=12.75, LO3=10.5 Setup group: 2 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 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= 5600.00 5600.00 5600.00 5600.00 5600.00 5600.00 5600.00 5600.00 Net SB= U U U U U U U U Pol. = LCP LCP LCP LCP LCP LCP LCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = C C C C C C C C The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 1 LO sum= 4960.49 4968.49 4976.49 4984.49 4992.49 5000.49 5008.49 5016.49 BBC fr= 639.51 631.51 623.51 615.51 607.51 599.51 591.51 583.51 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 -- bp116: the HSA for high T_b 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) (B1950) (J2000) (Date) * J0111+3906 01 08 47.254786 * 01 11 37.316982 01 11 53.803708 0108+388 38 50 32.81467 * 39 06 28.10430 39 08 14.74606 J0111+39 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.039 scan hours, 1.455 baseline hours above horizon. J0136+4751 01 33 55.103066 * 01 36 58.594811 01 37 16.565244 * 0133+476 47 36 12.85367 * 47 51 29.10006 47 53 14.53825 J0136+47 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 1.458 scan hours, 80.151 baseline hours above horizon. * J0154+4743 01 51 47.798764 * 01 54 56.289875 01 55 14.916082 0151+474 47 28 44.75274 * 47 43 26.53914 47 45 08.64203 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.167 scan hours, 9.161 baseline hours above horizon. * J1545+4751 15 43 36.198157 * 15 45 08.529822 15 45 16.168014 1543+480 48 01 13.49950 * 47 51 54.66442 47 50 44.29716 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 0.117 scan hours, 7.545 baseline hours above horizon. J1638+5720 16 37 17.425178 * 16 38 13.456293 16 38 16.846440 * 1637+574 57 26 15.76147 * 57 20 23.97918 57 19 34.96202 J1638+57 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 1.519 scan hours, 99.035 baseline hours above horizon. J1642+6856 16 42 18.064884 * 16 42 07.848514 16 42 03.834978 * 1642+690 69 02 13.21712 * 68 56 39.75640 68 55 51.84246 J1642+68 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 1.575 scan hours, 103.912 baseline hours above horizon. * J1740+5211 17 39 29.003555 * 17 40 36.977852 17 40 41.379766 1739+522 52 13 10.43856 * 52 11 43.40750 52 11 24.27341 J1740+52 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.150 scan hours, 9.875 baseline hours above horizon. * J1815+6127 18 15 05.464518 * 18 15 36.792027 18 15 36.848923 1815+614 61 26 04.51486 * 61 27 11.64786 61 27 09.83114 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 0.050 scan hours, 3.300 baseline hours above horizon. * J1849+6705 18 49 16.505887 * 18 49 16.072300 18 49 12.207999 1849+670 67 02 07.88019 * 67 05 41.67993 67 05 56.94263 J1849+67 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.200 scan hours, 13.173 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) J0111+3906 112.7 0133+476 118.5 J0154+4743 121.5 J1545+4751 80.0 1637+574 83.8 1642+690 94.2 J1740+5211 76.2 J1815+6127 84.8 J1849+6705 90.5 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