COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: 3C275.1 at 90 cm Exp. Code: BC138C Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Teddy Cheung Address: MS057 Physics Dept Brandeis University 415 South St. Waltham MA 02454 Phone: 781-736-2867 EMAIL: ccheung@brandeis.edu Fax: 781-736-2915 Phone during observation: 781-736-2867 Observing mode: Continuum Notes: Please use DDS1 type DAT tapes Schedule for VLBA_MK (Code Mk ) Page 2 3C275.1 at 90 cm 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 30 Jan 2004 Day 30 --- Next scan frequencies: 310.99 310.99 318.99 318.99 326.99 326.99 334.99 334.99 Next BBC frequencies: 810.99 810.99 818.99 818.99 826.99 826.99 834.99 834.99 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 08 36 00 3C275.1 06 49 55 6.8 75.0 -5.9 -71.3 0 1 1 0 08 36 00 08 52 00 --- 07 05 58 10.4 76.2 -5.6 -72.2 960 F 1 12800 08 56 00 3C273 07 09 58 10.2 91.5 -5.3 -70.2 224 1 1 12800 08 56 00 08 59 00 --- 07 12 59 11.0 91.8 -5.3 -70.2 180 F 1 15200 09 15 00 3C275.1 07 29 02 15.7 77.9 -5.3 -73.5 944 1 2 15200 09 15 00 09 31 00 --- 07 45 04 19.4 79.0 -5.0 -74.3 960 R 1 7200 09 35 00 3C273 07 49 05 19.4 95.0 -4.7 -69.7 223 1 2 7200 09 35 00 09 38 00 --- 07 52 05 20.1 95.3 -4.6 -69.6 180 R 1 4800 09 54 00 3C275.1 08 08 08 24.8 80.6 -4.6 -75.3 944 1 3 4800 09 54 00 10 15 00 --- 08 29 11 29.7 82.0 -4.2 -76.2 1260 F 1 12000 10 19 00 3C273 08 33 12 29.7 99.3 -3.9 -68.3 222 1 3 12000 10 19 00 10 22 00 --- 08 36 13 30.4 99.7 -3.9 -68.1 180 F 1 14400 10 38 00 3C275.1 08 52 15 35.0 83.5 -3.9 -77.0 943 1 4 14400 10 38 00 10 59 00 --- 09 13 19 40.0 84.9 -3.5 -77.6 1260 R 1 4000 11 03 00 J1331+3030 09 17 19 32.3 65.8 -4.2 -84.6 219 1 4 4000 11 03 00 11 06 00 =1328+307 09 20 20 32.9 65.8 -4.2 -85.0 180 R 1 1600 11 22 00 3C275.1 09 36 22 45.4 86.5 -3.1 -78.2 929 1 5 1600 11 22 00 11 43 00 --- 09 57 26 50.3 88.0 -2.8 -78.5 1260 F 1 15200 11 47 00 J1331+3030 10 01 27 41.7 66.3 -3.5 -89.9 217 1 5 15200 11 47 00 11 50 00 =1328+307 10 04 27 42.4 66.3 -3.4 -90.3 180 F 1 17600 12 06 00 3C275.1 10 20 30 55.7 89.8 -2.4 -78.7 927 1 6 17600 12 06 00 12 22 00 --- 10 36 32 59.5 91.2 -2.1 -78.6 960 R 1 4800 12 26 00 J1331+3030 10 40 33 50.2 65.8 -2.8 -95.3 215 1 6 4800 12 26 00 12 29 00 =1328+307 10 43 33 50.8 65.7 -2.8 -95.7 180 R 1 2400 Schedule for VLBA_MK (Code Mk ) Page 3 3C275.1 at 90 cm 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 30 Jan 2004 Day 30 --- 12 45 00 3C275.1 10 59 36 64.9 93.6 -1.7 -78.1 926 1 7 2400 12 45 00 13 01 00 --- 11 15 39 68.7 95.7 -1.5 -77.3 960 F 1 10400 13 05 00 J1331+3030 11 19 39 58.5 63.6 -2.2 -102.0 213 1 7 10400 13 05 00 13 08 00 =1328+307 11 22 40 59.1 63.4 -2.1 -102.6 180 F 1 12800 13 24 00 3C275.1 11 38 43 74.1 99.8 -1.1 -75.0 924 1 8 12800 13 24 00 13 40 00 --- 11 54 45 77.8 104.4 -0.8 -71.8 960 R 1 9600 13 44 00 J1331+3030 11 58 46 66.6 58.3 -1.5 -111.7 203 1 8 9600 13 44 00 13 47 00 =1328+307 12 01 46 67.2 57.7 -1.5 -112.6 180 R 1 7200 14 03 00 3C275.1 12 17 49 82.9 117.8 -0.4 -60.2 914 1 9 7200 14 03 00 14 19 00 --- 12 33 52 85.8 144.2 -0.2 -35.0 960 F 1 5600 14 23 00 J1331+3030 12 37 52 73.9 45.9 -0.9 -128.4 168 1 9 5600 14 23 00 14 26 00 =1328+307 12 40 53 74.4 44.4 -0.8 -130.2 180 F 1 8000 14 42 00 3C275.1 12 56 55 85.4 221.9 0.2 40.9 836 1 10 8000 14 42 00 14 58 00 --- 13 12 58 82.3 244.4 0.5 62.2 960 R 1 14400 15 02 00 J1331+3030 13 16 59 78.8 376.2 -0.2 -162.3 146 1 10 14400 15 02 00 15 05 00 =1328+307 13 19 59 79.0 372.9 -0.2 -165.9 180 R 1 12000 15 21 00 3C275.1 13 36 02 77.2 256.5 0.9 72.4 876 1 11 12000 15 21 00 15 37 00 --- 13 52 04 73.5 260.7 1.1 75.4 960 F 1 800 15 41 00 J1331+3030 13 56 05 77.9 333.6 0.4 150.9 185 1 11 800 15 41 00 15 44 00 =1328+307 13 59 06 77.6 331.0 0.5 148.0 180 F 1 3200 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: v90cm.set Matches group v5090n in /home/filehost/cwalker/sched/catalogs/freq.dat 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= -500.00 -500.00 -500.00 -500.00 -500.00 -500.00 -500.00 -500.00 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= U U U U U U U U IF = B D B D B D B D VLBA FE= omit 90cm omit 90cm VLBA Synth= 15.4 15.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 310.99 310.99 318.99 318.99 326.99 326.99 334.99 334.99 BBC fr= 810.99 810.99 818.99 818.99 826.99 826.99 834.99 834.99 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= 10 10 10 10 6010 6010 6010 6010 PCALFR2= 10 10 10 10 6010 6010 6010 6010 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- 3C275.1 at 90 cm 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) * 3C275.1 12 41 27.562994 * 12 43 57.657000 12 44 09.965663 16 39 18.09430 * 16 22 53.44000 16 21 26.16991 From catalog imbedded in main SCHED input file. From Hough et al. 2002 J1229+0203 12 26 33.245833 * 12 29 06.699729 12 29 19.221358 1226+023 02 19 43.30569 * 02 03 08.59819 02 01 45.20381 * 3C273 /home/filehost/cwalker/sched/catalogs/sources.vlba 3C273B ICRF - Ext.1 Source - 1998 IERS Annual Report J1229+02 * J1331+3030 13 28 49.657691 * 13 31 08.287984 13 31 19.583474 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 04.78857 3C286 /home/filehost/cwalker/sched/catalogs/sources.vlba J1331+30 VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 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) 3C275.1 124.1 3C273 123.8 J1331+3030 115.4 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