COVER INFORMATION Station: SHANGHAI (Code Sh ) Experiment: Structure changes in two Blazars - ON231; 04May01 13:00 - 22:00 Exp. Code: EM043A Schedule Version: 1.00 Processed by SCHED version: Release of 30 Jan. 2001 PI: Franco Mantovani Address: Istituto di Radioastronomia Via P. Gobetti, 101 I-40129 Bologna Italy Phone: +39 51 6399377 EMAIL: fmantovani@ira.bo.cnr.it Fax: +39 51 6399431 Phone during observation: Observing mode: Continuum Notes: Schedule for SHANGHAI (Code Sh ) Page 2 Structure changes in two Blazars - ON231; 04May01 13:00 - 22:00 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) ---------------------------------------------------------------------------------------- --- Mon 4 Jun 2001 Day 155 --- Next scan frequencies: 4960.49 4968.49 4976.49 4984.49 4992.49 5000.49 5008.49 5016.49 Next BBC frequencies: 760.49 768.49 776.49 784.49 792.49 800.49 808.49 816.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 13 02 00 0804+499 13 58 57 24.7 314.8 5.8 70.4 0 1 1 0 13 02 00 13 15 00 --- 14 12 00 22.8 315.6 6.1 68.2 780 F 1 5200 13 17 00 ON231 14 14 00 65.5 270.5 1.9 76.4 -24 1 1 5200 13 17 00 13 30 00 --- 14 27 02 62.7 272.0 2.1 76.2 756 F 1 10400 13 32 00 ON231 14 29 02 62.3 272.3 2.1 76.2 117 1 1 10400 13 32 00 13 45 00 --- 14 42 05 59.5 273.7 2.3 75.9 780 F 1 15600 13 47 00 ON231 14 44 05 59.0 273.9 2.4 75.8 117 1 2 15600 13 47 00 14 00 00 --- 14 57 07 56.3 275.2 2.6 75.4 780 R 1 10400 14 02 00 ON231 14 59 07 55.8 275.4 2.6 75.3 117 1 2 10400 14 02 00 14 15 00 --- 15 12 09 53.1 276.7 2.8 74.8 780 R 1 5200 14 17 00 ON231 15 14 10 52.6 276.9 2.9 74.8 117 1 2 5200 14 17 00 14 30 00 --- 15 27 12 49.9 278.1 3.1 74.2 780 R 1 0 14 32 00 ON231 15 29 12 49.4 278.3 3.1 74.1 117 1 3 0 14 32 00 14 45 00 --- 15 42 14 46.7 279.5 3.3 73.4 780 F 1 5200 14 47 00 ON231 15 44 15 46.3 279.7 3.4 73.3 117 1 3 5200 14 47 00 15 00 00 --- 15 57 17 43.5 280.9 3.6 72.6 780 F 1 10400 15 02 00 ON231 15 59 17 43.1 281.1 3.6 72.5 117 1 3 10400 15 02 00 15 15 00 --- 16 12 19 40.4 282.3 3.8 71.8 780 F 1 15600 15 17 00 OQ208 16 14 20 62.4 272.7 2.1 76.6 45 1 4 15600 15 17 00 15 23 30 --- 16 20 51 61.0 273.4 2.2 76.4 390 R 1 13000 15 25 30 ON231 16 22 51 38.2 283.2 4.0 71.1 42 1 4 13000 15 25 30 15 32 00 --- 16 29 22 36.8 283.8 4.1 70.7 390 R 1 10400 15 34 00 ON231 16 31 22 36.4 284.0 4.2 70.6 117 1 4 10400 15 34 00 15 47 00 --- 16 44 25 33.7 285.2 4.4 69.7 780 R 1 5200 Schedule for SHANGHAI (Code Sh ) Page 3 Structure changes in two Blazars - ON231; 04May01 13:00 - 22:00 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) ---------------------------------------------------------------------------------------- --- Mon 4 Jun 2001 Day 155 --- 15 49 00 ON231 16 46 25 33.3 285.4 4.4 69.6 117 1 4 5200 15 49 00 16 02 00 --- 16 59 27 30.6 286.6 4.6 68.7 780 R 1 0 16 04 00 ON231 17 01 27 30.2 286.7 4.7 68.5 117 1 5 0 16 04 00 16 17 00 --- 17 14 29 27.5 288.0 4.9 67.6 780 F 1 5200 16 19 00 ON231 17 16 30 27.1 288.2 4.9 67.4 117 1 5 5200 16 19 00 16 32 00 --- 17 29 32 24.5 289.4 5.1 66.4 780 F 1 10400 16 47 00 ON231 17 44 34 21.4 290.9 5.4 65.2 888 1 5 10400 16 47 00 17 00 00 --- 17 57 37 18.9 292.2 5.6 64.1 780 F 1 15600 17 02 00 ON231 17 59 37 18.5 292.4 5.6 64.0 117 1 6 15600 17 02 00 17 15 00 --- 18 12 39 15.9 293.7 5.9 62.8 780 R 1 10400 17 17 00 ON231 18 14 39 15.5 294.0 5.9 62.6 117 1 6 10400 17 17 00 17 30 00 --- 18 27 41 13.0 295.3 6.1 61.4 780 R 1 5200 17 32 00 ON231 18 29 42 12.6 295.6 6.1 61.3 117 1 6 5200 17 32 00 17 45 00 --- 18 42 44 10.1 297.0 6.4 60.0 780 R 1 0 17 47 00 ON231 18 44 44 9.7 297.2 6.4 59.8 117 1 7 0 17 47 00 18 00 00 --- 18 57 46 7.2 298.7 6.6 58.5 780 F 1 5200 18 02 00 OQ208 18 59 47 27.6 288.2 4.9 67.7 50 1 7 5200 18 02 00 18 08 30 --- 19 06 18 26.3 288.8 5.0 67.2 390 F 1 7800 18 10 30 3C286 19 08 18 19.6 294.5 5.6 64.8 96 1 7 7800 18 10 30 18 17 00 --- 19 14 49 18.4 295.1 5.7 64.1 390 F 1 10400 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /soft/astro/sched/setups/v6cm-128-8-1-L.set Matches group sh6cm in /usr/local/sched/catalogs/freq.dat from Huang Xinyong 170300, change in LO Setup group: 10 Station: SHANGHAI Total bit rate: 128 Format: MKIV1:4 Bits per sample: 1 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 2.00 Tape speeds: Low density - 135.000 ips, High density - 80.00 ips Time per pass for 15800 ft, High density tapes is: 00:39:30 1st LO= 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 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= U U U U U U U U IF = A A A A A A A A The following frequency sets based on this setup were used. Frequency Set: 10 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= 760.49 768.49 776.49 784.49 792.49 800.49 808.49 816.49 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_off SOURCE LIST -- Structure changes in two Blazars - ON231; 04May01 13:00 - 22:00 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) * 0804+499 08 04 58.395734 * 08 08 39.666275 08 08 42.910749 49 59 23.07811 * 49 50 36.53042 49 50 33.58117 From catalog imbedded in main SCHED input file. * ON231 12 19 01.115499 * 12 21 31.690420 12 21 35.379184 28 30 36.52395 * 28 13 58.49850 28 13 44.20042 From catalog imbedded in main SCHED input file. * 3C286 13 28 49.657106 * 13 31 08.287400 13 31 12.143148 30 45 58.64038 * 30 30 32.95900 30 30 19.89754 From catalog imbedded in main SCHED input file. * OQ208 14 04 45.615442 * 14 07 00.394700 14 07 04.334233 28 41 29.23596 * 28 27 14.69100 28 27 01.84424 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) 0804+499 47.1 ON231 97.6 3C286 108.5 OQ208 115.5 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