COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Distribution of SiO masers in AGB stars. Exp. Code: BC146b Schedule Version: 1.10 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Francisco Colomer Address: Observatorio Astronomico Nacional Apartado 112 E-28803 Alcala de Henares, SPAIN Phone: +34-918855060 EMAIL: f.colomer@oan.es, jf.desmurs@oan.es Fax: +34-918855062 Phone during observation: Observing mode: VLBA 7mm spectral line observations Notes: Please use all available antennas LINE EXPERIMENT: Please DO NOT use phase cal signal Thank you Schedule for VLBA_OV (Code Ov ) Page 2 Distribution of SiO masers in AGB stars. 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) ---------------------------------------------------------------------------------------- --- Sat 22 Jan 2005 Day 22 --- Next scan frequencies: 42810.90 42870.22 43112.35 43112.35 Next BBC frequencies: 610.90 670.22 912.35 912.35 Next scan bandwidths: 8.00 8.00 8.00 8.00 17 03 54 3C345 17 19 22 82.5 -67.3 0.6 107.0 0 1 1 0 17 03 54 17 14 52 --- 17 30 22 80.4 -70.9 0.8 101.8 658 F 1 8776 17 17 08 3C454.3 17 32 39 17.2 82.5 -5.4 -55.3 4 1 1 8776 17 17 08 17 28 07 --- 17 43 39 19.4 84.1 -5.2 -55.5 658 F 1 17552 17 28 59 RCAS 17 44 31 26.3 44.0 -6.2 -62.4 19 1 2 17552 17 28 59 17 50 55 --- 18 06 31 29.3 45.6 -5.9 -65.9 1316 R 1 0 17 51 00 RCAS 18 06 36 29.4 45.6 -5.9 -65.9 0 1 1 0 17 50 55 18 01 58 --- 18 17 36 30.9 46.4 -5.7 -67.7 658 F 2 8835 18 02 58 3C454.3 18 18 36 26.4 89.2 -4.6 -56.0 26 1 1 8835 18 02 58 18 13 57 --- 18 29 36 28.5 90.9 -4.4 -56.0 658 F 2 17611 18 14 59 RCAS 18 30 39 32.8 47.3 -5.5 -69.8 28 1 2 17611 18 14 59 18 36 56 --- 18 52 39 36.1 48.6 -5.1 -73.3 1316 R 2 59 18 37 00 RCAS 18 52 44 36.1 48.6 -5.1 -73.3 0 1 3 59 18 36 56 18 47 58 --- 19 03 44 37.7 49.2 -4.9 -75.1 658 F 1 8894 18 49 12 3C454.3 19 04 58 35.6 96.5 -3.8 -55.5 36 1 4 8894 18 49 12 19 00 10 --- 19 15 58 37.7 98.4 -3.6 -55.1 658 R 1 17531 19 01 46 RCAS 19 17 34 39.8 49.9 -4.7 -77.4 57 1 4 17531 19 01 46 19 23 42 --- 19 39 34 43.2 50.7 -4.3 -81.2 1316 R 1 -21 19 23 47 RCAS 19 39 38 43.2 50.7 -4.3 -81.2 0 1 3 -21 19 23 42 19 34 45 --- 19 50 38 44.9 51.0 -4.1 -83.1 658 F 2 8813 19 37 38 3C454.3 19 53 32 45.0 105.4 -3.0 -53.0 131 1 3 8813 19 37 38 19 48 37 --- 20 04 32 47.1 107.7 -2.8 -52.1 658 F 2 17589 19 50 22 RCAS 20 06 18 47.3 51.4 -3.9 -85.9 62 1 4 17589 19 50 22 20 12 18 --- 20 28 18 50.8 51.6 -3.5 -90.1 1316 R 2 37 20 12 23 RCAS 20 28 22 50.8 51.6 -3.5 -90.1 0 1 5 37 20 12 18 20 23 21 --- 20 39 22 52.5 51.5 -3.3 -92.3 658 F 1 8874 Schedule for VLBA_OV (Code Ov ) Page 3 Distribution of SiO masers in AGB stars. 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) ---------------------------------------------------------------------------------------- --- Sat 22 Jan 2005 Day 22 --- 20 25 35 3C454.3 20 41 37 54.0 116.8 -2.2 -47.8 85 1 6 8874 20 25 35 20 36 34 --- 20 52 37 55.9 119.9 -2.0 -45.9 658 R 1 17550 20 38 18 RCAS 20 54 21 54.8 51.2 -3.1 -95.4 52 1 6 17550 20 38 18 21 00 14 --- 21 16 21 58.2 50.4 -2.7 -100.4 1316 R 1 -2 21 00 19 RCAS 21 16 26 58.2 50.4 -2.7 -100.5 0 1 5 -2 21 00 14 21 11 17 --- 21 27 26 59.9 49.7 -2.5 -103.2 658 F 2 8835 21 13 08 3C454.3 21 29 17 61.8 132.6 -1.4 -37.6 50 1 5 8835 21 13 08 21 24 06 --- 21 40 17 63.4 137.3 -1.2 -34.2 658 F 2 17611 21 26 07 RCAS 21 42 19 62.2 48.4 -2.3 -107.2 56 1 6 17611 21 26 07 21 48 04 --- 22 04 19 65.4 45.7 -1.9 -114.0 1316 R 2 59 21 48 08 RCAS 22 04 23 65.4 45.7 -1.9 -114.0 0 1 7 59 21 48 04 21 59 07 --- 22 15 23 66.9 43.8 -1.7 -117.8 658 F 1 8896 22 01 39 3C454.3 22 17 56 67.5 156.7 -0.6 -19.1 71 1 8 8896 22 01 39 22 12 37 --- 22 28 56 68.2 163.5 -0.4 -13.6 658 R 1 17528 22 14 39 RCAS 22 30 59 69.0 40.5 -1.5 -124.0 35 1 8 17528 22 14 39 22 36 36 --- 22 52 59 71.7 34.1 -1.1 -134.3 1316 R 1 -24 22 38 57 3C454.3 22 55 20 68.9 180.8 0.0 0.6 37 1 7 -24 22 38 57 23 00 53 --- 23 17 20 68.3 195.2 0.4 12.6 1316 F 2 17528 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bc146_7mm.set Matches group v7mm_b8 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 2 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= 42200.00 42200.00 42200.00 42200.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.4 7.4 11.6 The following frequency sets based on this setup were used. Frequency Set: 1 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 42810.90 42870.22 43112.35 43112.35 BBC fr= 610.90 670.22 912.35 912.35 Bandwd= 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10, 18, 26 track2= 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- Distribution of SiO masers in AGB stars. 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) * RCAS 23 55 52.135204 * 23 58 24.870000 23 58 38.229458 51 06 37.88876 * 51 23 19.70000 51 25 09.44118 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 27.00 27.00 27.00 27.00 * 3C454.3 22 51 29.520100 * 22 53 57.748300 22 54 11.204808 15 52 54.35016 * 16 08 53.56300 16 10 25.79497 From catalog imbedded in main SCHED input file. Doppler based on other sources. * 3C345 16 41 17.606463 * 16 42 58.810200 16 43 07.789772 39 54 10.81592 * 39 48 36.99500 39 47 43.75326 From catalog imbedded in main SCHED input file. Doppler based on other sources. 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) RCAS 85.4 3C454.3 51.9 3C345 78.0 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