COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: SiO near GC Exp. Code: BM177A Schedule Version: 2.00 Processed by SCHED version: Release of 02 July 2002 PI: Makoto Miyoshi Address: VERA Project Office National Astronomical Observatory 2-21-1, Osawa, Mitaka, Tokyo 181-8588, JAPAN Phone: 81 422 34 3937 EMAIL: miyoshi@miz.nao.ac.jp Fax: 81 422 34 3635 Phone during observation: 81 422 34 3937 Observing mode: VLBA Notes: Totally 4 passes are need, 1 pass for each IF. Exact coordinate of Sgr A* for correlation, which is different from that of the antenna pointing. SOURCE=SGRA RA=17:45:40.0392 DEC=-29:00:28.151 EPOCH=J2000 Schedule for VLBA_OV (Code Ov ) Page 2 SiO near GC 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 11 Jan 2003 Day 11 --- Next scan frequencies: 42811.19 42821.19 43112.64 43122.71 Next BBC frequencies: 611.19 621.19 912.64 922.71 Next scan bandwidths: 8.00 8.00 8.00 8.00 13 19 55 NRAO530 12 49 22 6.7 112.0 -4.7 -49.3 0 1 1 0 13 19 55 13 25 54 --- 12 55 22 7.8 113.0 -4.6 -48.8 359 F 1 4787 14 08 47 NRAO530 13 38 22 15.4 120.3 -3.9 -44.9 2552 1 1 4787 14 08 47 14 14 46 --- 13 44 22 16.4 121.4 -3.8 -44.3 359 F 1 9574 14 15 46 SGRA 13 45 22 3.1 130.6 -4.0 H -43.7 27 1 2 9574 14 15 46 14 31 43 --- 14 01 22 5.4 133.2 -3.7 -41.6 0 R 1 12861 14 33 43 SGRA 14 03 22 5.7 133.5 -3.7 -41.3 113 1 3 12861 14 33 43 14 55 39 --- 14 25 22 8.8 137.2 -3.3 -38.2 1316 F 1 4691 14 57 39 NRAO530 14 27 22 23.4 129.7 -3.1 -39.0 84 1 3 4691 14 57 39 15 03 38 --- 14 33 22 24.3 131.0 -3.0 -38.1 359 F 1 9478 15 04 37 SGRA 14 34 22 10.0 138.8 -3.2 -36.8 25 1 4 9478 15 04 37 15 20 35 --- 14 50 22 12.0 141.7 -2.9 -34.3 957 R 1 12957 15 22 35 SGRA 14 52 22 12.3 142.1 -2.9 -34.0 113 1 5 12957 15 22 35 15 44 31 --- 15 14 22 14.9 146.3 -2.5 -30.4 1316 F 1 4595 15 46 31 NRAO530 15 16 22 30.3 140.6 -2.3 -31.2 83 1 5 4595 15 46 31 15 52 30 --- 15 22 22 31.0 142.1 -2.2 -30.1 359 F 1 9382 15 53 29 SGRA 15 23 22 15.8 148.0 -2.4 -28.8 23 1 6 9382 15 53 29 16 09 27 --- 15 39 22 17.4 151.3 -2.1 -25.9 957 R 1 13053 16 11 27 SGRA 15 41 22 17.6 151.7 -2.1 -25.6 113 1 7 13053 16 11 27 16 33 23 --- 16 03 22 19.5 156.3 -1.7 -21.4 1316 F 1 4499 16 35 23 NRAO530 16 05 22 35.6 153.4 -1.5 -21.5 82 1 7 4499 16 35 23 16 41 22 --- 16 11 22 36.1 155.1 -1.4 -20.1 359 F 1 9285 16 42 21 SGRA 16 12 22 20.2 158.3 -1.6 -19.7 22 1 8 9285 16 42 21 16 58 19 --- 16 28 22 21.3 161.9 -1.3 -16.5 957 R 1 13150 17 00 18 SGRA 16 30 22 21.4 162.3 -1.3 -16.1 113 1 9 13150 17 00 18 17 22 15 --- 16 52 22 22.6 167.4 -0.9 -11.5 1316 F 1 4402 Schedule for VLBA_OV (Code Ov ) Page 3 SiO near GC 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 11 Jan 2003 Day 11 --- 17 24 15 NRAO530 16 54 22 38.9 167.8 -0.6 -9.9 81 1 9 4402 17 24 15 17 30 14 --- 17 00 22 39.1 169.7 -0.5 -8.4 359 F 1 9189 17 31 13 SGRA 17 01 22 22.9 169.4 -0.7 -9.6 22 1 10 9189 17 31 13 17 47 11 --- 17 17 22 23.4 173.2 -0.5 -6.2 957 R 1 13246 17 49 10 SGRA 17 19 22 23.5 173.7 -0.4 -5.7 113 1 11 13246 17 49 10 18 11 07 --- 17 41 22 23.8 178.9 -0.1 -1.0 1316 F 1 4306 18 13 07 NRAO530 17 43 22 39.6 183.2 0.2 2.6 82 1 11 4306 18 13 07 18 19 06 --- 17 49 22 39.5 185.1 0.3 4.2 359 F 1 9093 18 20 05 SGRA 17 50 22 23.8 181.1 0.1 1.0 22 1 12 9093 18 20 05 18 36 03 --- 18 06 22 23.6 184.9 0.3 4.5 957 R 1 13342 18 38 02 SGRA 18 08 22 23.6 185.4 0.4 4.9 113 1 13 13342 18 38 02 18 59 59 --- 18 30 22 22.9 190.6 0.7 9.6 1316 F 1 4210 19 01 59 NRAO530 18 32 22 37.8 198.4 1.0 14.9 84 1 13 4210 19 01 59 19 07 58 --- 18 38 22 37.4 200.1 1.1 16.3 359 F 1 8997 19 08 57 SGRA 18 39 22 22.6 192.7 0.9 11.5 24 1 14 8997 19 08 57 19 24 55 --- 18 55 22 21.8 196.3 1.2 14.8 957 R 1 13438 ----------- Tape Change ------------ 19 26 54 SGRA 18 57 22 21.7 196.8 1.2 15.3 113 2 1 13438 19 26 54 19 48 51 --- 19 19 22 20.2 201.7 1.6 19.7 1316 F 1 4114 19 50 50 NRAO530 19 21 22 33.6 212.1 1.8 25.8 87 2 1 4114 19 50 50 19 56 49 --- 19 27 22 33.0 213.7 1.9 27.0 359 F 1 8901 19 57 49 SGRA 19 28 22 19.5 203.7 1.7 21.4 27 2 2 8901 19 57 49 20 13 47 --- 19 44 22 18.2 207.1 2.0 24.5 957 R 1 13534 20 15 46 SGRA 19 46 22 18.0 207.5 2.0 24.9 113 2 3 13534 20 15 46 20 37 43 --- 20 08 22 15.8 212.0 2.4 28.8 1316 F 1 4018 20 39 42 NRAO530 20 10 22 27.6 224.1 2.6 34.7 90 2 3 4018 20 39 42 20 45 41 --- 20 16 22 26.8 225.5 2.7 35.6 359 F 1 8805 20 46 41 SGRA 20 17 22 14.8 213.8 2.5 30.4 30 2 4 8805 20 46 41 21 02 39 --- 20 33 22 13.0 216.8 2.8 33.1 957 R 1 13630 Schedule for VLBA_OV (Code Ov ) Page 4 SiO near GC 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 11 Jan 2003 Day 11 --- 21 04 38 SGRA 20 35 22 12.8 217.2 2.8 33.4 113 2 4 13630 21 04 38 21 09 38 --- 20 40 22 12.2 218.1 2.9 34.2 299 R 1 9641 21 10 37 NRAO530 20 41 22 23.0 230.8 3.1 39.3 32 2 4 9641 21 10 37 21 16 36 --- 20 47 22 22.1 232.0 3.2 40.1 359 R 1 4854 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bm177.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: 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= 42200.00 42200.00 42200.00 42200.00 Net SB= U U U U Pol. = LCP LCP LCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = C C C 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= 42811.19 42821.19 43112.64 43122.71 BBC fr= 611.19 621.19 912.64 922.71 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 barrel=roll_auto SOURCE LIST -- SiO near GC 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) 1730-130 17 30 13.535185 * 17 33 02.705782 17 33 10.672821 J1733-13 -13 02 45.83980 *-13 04 49.54828 -13 05 00.11961 * NRAO530 From catalog imbedded in main SCHED input file. USNO - Ref Frame 1998-6, Eubanks June 1998 * SGRA 17 42 30.276485 * 17 45 41.000000 17 45 49.962688 -28 59 00.48534 *-29 00 10.00000 -29 00 15.46892 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) NRAO530 29.4 SGRA 24.8 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