COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Distribution of SiO masers in AGB stars. Exp. Code: BC146a 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) ---------------------------------------------------------------------------------------- --- Fri 14 Jan 2005 Day 14 --- Next scan frequencies: 42816.81 42876.14 43118.31 43118.31 Next BBC frequencies: 616.81 676.14 918.31 918.31 Next scan bandwidths: 8.00 8.00 8.00 8.00 17 35 21 3C345 17 19 22 82.5 -67.3 0.6 107.0 0 1 1 0 17 35 21 17 46 19 --- 17 30 22 80.4 -70.9 0.8 101.8 658 F 1 8776 17 48 36 3C454.3 17 32 39 17.2 82.5 -5.4 -55.3 4 1 1 8776 17 48 36 17 59 34 --- 17 43 39 19.4 84.1 -5.2 -55.5 658 F 1 17552 18 01 13 CCYG 17 45 18 64.1 90.1 -2.1 -71.5 3 1 2 17552 18 01 13 18 23 09 --- 18 07 18 68.5 93.8 -1.7 -71.2 1316 R 1 0 18 23 14 CCYG 18 07 23 68.5 93.8 -1.7 -71.2 0 1 1 0 18 23 09 18 34 12 --- 18 18 23 70.7 96.0 -1.5 -70.6 658 F 2 8839 18 35 57 3C454.3 18 20 08 26.7 89.4 -4.6 -56.0 12 1 1 8839 18 35 57 18 46 56 --- 18 31 08 28.8 91.1 -4.4 -56.0 658 F 2 17615 18 48 44 CCYG 18 32 57 73.5 99.4 -1.3 -69.4 13 1 2 17615 18 48 44 19 10 40 --- 18 54 57 77.8 106.6 -0.9 -65.4 1316 R 2 63 19 10 45 CCYG 18 55 02 77.8 106.6 -0.9 -65.4 1 1 3 63 19 10 40 19 21 44 --- 19 06 02 79.9 111.9 -0.7 -61.6 658 F 1 8910 19 23 50 3C454.3 19 08 08 36.2 97.0 -3.8 -55.4 32 1 4 8910 19 23 50 19 34 48 --- 19 19 08 38.4 98.9 -3.6 -55.0 658 R 1 17514 19 36 47 CCYG 19 21 08 82.6 123.3 -0.5 -52.5 25 1 3 17514 19 36 47 19 58 43 --- 19 43 08 85.4 159.6 -0.1 -19.3 1316 F 2 38 19 58 48 CCYG 19 43 13 85.4 159.8 -0.1 -19.1 0 1 3 38 19 58 43 20 09 46 --- 19 54 13 85.6 189.7 0.1 9.2 658 F 2 8880 20 11 57 3C454.3 19 56 24 45.6 106.0 -3.0 -52.8 44 1 4 8880 20 11 57 20 22 55 --- 20 07 24 47.7 108.4 -2.8 -51.9 658 R 2 17544 20 24 55 CCYG 20 09 24 84.2 222.9 0.3 40.3 37 1 4 17544 20 24 55 20 46 51 --- 20 31 24 80.6 245.6 0.7 59.8 1316 R 2 -8 20 46 56 CCYG 20 31 28 80.6 245.7 0.7 59.8 0 1 5 -8 20 46 51 20 57 54 --- 20 42 28 78.6 251.7 0.9 64.2 658 F 1 8828 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) ---------------------------------------------------------------------------------------- --- Fri 14 Jan 2005 Day 14 --- 20 59 47 3C454.3 20 44 22 54.5 117.5 -2.2 -47.3 18 1 5 8828 20 59 47 21 10 45 --- 20 55 22 56.4 120.7 -2.0 -45.4 658 F 1 17604 21 12 36 CCYG 20 57 13 75.8 257.4 1.1 67.7 14 1 6 17604 21 12 36 21 34 33 --- 21 19 13 71.4 263.2 1.5 70.4 1316 R 1 52 21 34 37 CCYG 21 19 18 71.4 263.2 1.5 70.4 0 1 5 52 21 34 33 21 45 35 --- 21 30 18 69.2 265.5 1.7 71.0 658 F 2 8888 21 47 16 3C454.3 21 31 59 62.2 133.7 -1.4 -36.8 7 1 6 8888 21 47 16 21 58 15 --- 21 42 59 63.7 138.5 -1.2 -33.3 658 R 2 17536 21 59 52 CCYG 21 44 36 66.4 268.0 1.9 71.4 5 1 6 17536 21 59 52 22 21 48 --- 22 06 36 62.0 271.4 2.3 71.5 1316 R 2 -16 22 21 53 CCYG 22 06 41 62.0 271.4 2.3 71.5 0 1 7 -16 22 21 48 22 32 51 --- 22 17 41 59.8 272.9 2.4 71.3 658 F 1 8821 22 34 14 3C454.3 22 19 04 67.6 157.4 -0.6 -18.6 0 1 7 8821 22 34 14 22 45 12 --- 22 30 04 68.3 164.2 -0.4 -13.1 658 F 1 17597 22 46 32 CCYG 22 31 24 57.1 274.7 2.7 71.0 0 1 8 17597 22 46 32 23 08 28 --- 22 53 24 52.7 277.4 3.0 70.2 1316 R 1 45 23 09 53 3C454.3 22 54 49 68.9 180.4 0.0 0.3 14 1 7 45 23 09 53 23 31 49 --- 23 16 49 68.4 194.9 0.4 12.3 1316 F 2 17597 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= 42816.81 42876.14 43118.31 43118.31 BBC fr= 616.81 676.14 918.31 918.31 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) * CCYG 19 48 38.426959 * 19 50 33.920000 19 50 43.467399 32 47 09.43384 * 32 54 50.60000 32 55 27.41922 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 12.00 12.00 12.00 12.00 * 3C454.3 22 51 29.520100 * 22 53 57.748300 22 54 11.254991 15 52 54.35016 * 16 08 53.56300 16 10 26.81320 From catalog imbedded in main SCHED input file. Doppler based on other sources. * 3C345 16 41 17.606463 * 16 42 58.810200 16 43 07.557284 39 54 10.81592 * 39 48 36.99500 39 47 45.75721 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) CCYG 54.1 3C454.3 59.2 3C345 74.5 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