COVER INFORMATION Station: GBT_MK5 (Code Gb ) Experiment: High Sensitivity Study of ULIGs - NGC2623 Exp. Code: gl028c Schedule Version: 1.00 Processed by SCHED version: 6.02 July 2005 PI: Colin Lonsdale Address: Haystack Observatory Off Route 40 Westford, MA 01886 USA Phone: 781-981-5407 EMAIL: clonsdale@haystack.mit.edu Fax: 781-981-0590 Phone during observation: Observing mode: 18cm (1 Gb/s) Notes: Schedule for GBT_MK5 (Code Gb ) Page 2 High Sensitivity Study of ULIGs - NGC2623 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. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Mon 31 Oct 2005 Day 304 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 314.41 314.41 314.41 314.41 282.41 282.41 282.41 282.41 250.41 250.41 250.41 250.41 218.41 218.41 218.41 218.41 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 08 45 00 NGC2623 06 04 40 55.3 99.9 -2.6 -58.9 0 1 1 0 08 45 00 09 00 00 --- 06 19 42 58.2 103.1 -2.3 -57.9 900 F 1 0 08 45 04 09 01 00 NGC2623 06 20 43 58.4 103.4 -2.3 -57.8 36 1 1 0 09 01 00 09 09 00 --- 06 28 44 59.9 105.3 -2.2 -57.0 480 F 1 0 09 01 04 09 10 00 NGC2623 06 29 44 60.1 105.5 -2.2 -56.9 36 1 1 0 09 10 00 09 25 00 --- 06 44 46 62.9 109.5 -1.9 -55.1 900 F 1 0 09 10 04 09 27 00 J0837+2454 06 46 47 62.9 111.8 -1.9 -53.3 86 1 1 0 09 27 00 09 29 00 =0834+250 06 48 47 63.3 112.4 -1.8 -53.0 120 F 1 0 09 27 04 09 30 00 NGC2623 06 49 47 63.8 110.9 -1.8 -54.3 29 1 1 0 09 30 00 09 45 00 --- 07 04 50 66.5 115.8 -1.6 -51.5 900 F 1 0 09 30 04 09 46 00 NGC2623 07 05 50 66.7 116.1 -1.5 -51.3 35 1 1 0 09 46 00 10 01 00 --- 07 20 52 69.3 122.0 -1.3 -47.5 900 F 1 0 09 46 04 10 02 00 NGC2623 07 21 53 69.4 122.5 -1.3 -47.2 34 1 1 0 10 02 00 10 17 00 --- 07 36 55 71.8 129.7 -1.0 -42.0 900 F 1 0 10 02 04 10 19 00 J0837+2454 07 38 55 71.6 133.0 -1.0 -39.2 84 1 1 0 10 19 00 10 21 00 =0834+250 07 40 56 71.9 134.1 -1.0 -38.3 120 F 1 0 10 19 04 10 22 00 NGC2623 07 41 56 72.5 132.5 -0.9 -39.9 29 1 1 0 10 22 00 10 37 00 --- 07 56 58 74.5 142.2 -0.7 -32.2 900 F 1 0 10 22 04 10 38 00 NGC2623 07 57 58 74.7 142.9 -0.7 -31.6 32 1 1 0 10 38 00 10 53 00 --- 08 13 01 76.2 155.0 -0.4 -21.6 900 F 1 0 10 38 04 10 54 00 NGC2623 08 14 01 76.3 155.9 -0.4 -20.8 32 1 1 0 10 54 00 11 09 00 --- 08 29 04 77.1 170.2 -0.2 -8.6 900 F 1 0 10 54 04 Schedule for GBT_MK5 (Code Gb ) Page 3 High Sensitivity Study of ULIGs - NGC2623 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. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Mon 31 Oct 2005 Day 304 --- 11 10 00 NGC2623 08 30 04 77.2 171.2 -0.1 -7.7 31 1 1 0 11 10 00 11 15 00 --- 08 35 05 77.3 176.2 -0.1 -3.3 300 F 1 0 11 10 04 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: gl028.18cm Matches group gbt18cc in /home/dole/sched/catalogs/freq.dat LO1=4.550, LO2=12.75, LO3=10.5 Setup group: 4 Station: GBT_MK5 Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 Speedup factor: 0.50 Disk used to record data. 1st LO= 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 1924.90 Net SB= L L U U L L U U L L U U L L U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 7 BBC SB= U U L L U U L L U U L L U U L L IF = 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on this setup were used. Frequency Set: 4 Setup file default. No pcal detection. LO sum= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 314.41 314.41 314.41 314.41 282.41 282.41 282.41 282.41 250.41 250.41 250.41 250.41 218.41 218.41 218.41 218.41 Bandwd= 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off SOURCE LIST -- High Sensitivity Study of ULIGs - NGC2623 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) * NGC2623 * 08 35 25.270000 08 38 24.078629 08 38 44.763272 0.00 * 25 55 50.20000 25 45 16.54256 25 44 07.56282 0.00 From catalog imbedded in main SCHED input file. 2.217 scan hours, 19.732 baseline hours above horizon. * J0837+2454 08 34 42.314443 * 08 37 40.245685 08 38 00.827348 0.23 0834+250 25 04 54.32847 * 24 54 23.12160 24 53 14.74698 0.41 J0837+24 /home/dole/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.067 scan hours, 0.667 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) NGC2623 92.6 J0837+2454 92.6 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