COVER INFORMATION Station: VLBA_MK (Code Mk ) 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_MK (Code Mk ) 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 14 57 39 NRAO530 11 58 39 1.4 104.5 -5.6 D -69.3 0 1 1 0 14 57 39 15 03 38 --- 12 04 39 2.8 105.0 -5.5 -68.9 0 F 1 4787 15 22 35 SGRA 12 23 39 -1.7 120.3 -5.4 D -68.2 1121 1 2 4787 15 22 35 15 44 31 --- 12 45 39 2.8 122.2 -5.0 H -65.5 0 R 1 12861 15 46 31 NRAO530 12 47 39 12.5 109.0 -4.8 -65.9 94 1 2 12861 15 46 31 15 52 30 --- 12 53 39 13.8 109.6 -4.7 -65.5 359 R 1 8074 15 53 29 SGRA 12 54 39 4.5 123.1 -4.9 -64.4 35 1 3 8074 15 53 29 16 09 27 --- 13 10 39 7.7 124.6 -4.6 -62.3 957 F 1 4691 16 11 27 SGRA 13 12 39 8.1 124.8 -4.6 -62.0 113 1 4 4691 16 11 27 16 33 23 --- 13 34 39 12.2 127.3 -4.2 -58.9 1316 R 1 12957 16 35 23 NRAO530 13 36 39 23.2 114.6 -3.9 -61.5 92 1 4 12957 16 35 23 16 41 22 --- 13 42 39 24.5 115.3 -3.8 -60.8 359 R 1 8170 16 42 21 SGRA 13 43 39 13.9 128.3 -4.0 -57.6 33 1 5 8170 16 42 21 16 58 19 --- 13 59 39 16.8 130.3 -3.8 -55.1 957 F 1 4595 17 00 18 SGRA 14 01 39 17.2 130.6 -3.7 -54.8 113 1 6 4595 17 00 18 17 22 15 --- 14 23 39 21.0 133.7 -3.4 -51.1 1316 R 1 13053 17 24 15 NRAO530 14 25 39 33.3 121.7 -3.1 -55.3 89 1 6 13053 17 24 15 17 30 14 --- 14 31 39 34.5 122.7 -3.0 -54.4 359 R 1 8266 17 31 13 SGRA 14 32 39 22.5 135.0 -3.2 -49.5 30 1 7 8266 17 31 13 17 47 11 --- 14 48 39 25.1 137.6 -3.0 -46.5 957 F 1 4499 17 49 10 SGRA 14 50 39 25.4 137.9 -2.9 -46.1 113 1 8 4499 17 49 10 18 11 07 --- 15 12 39 28.8 141.8 -2.6 -41.7 1316 R 1 13149 18 13 07 NRAO530 15 14 39 42.6 131.2 -2.3 -46.6 86 1 8 13149 18 13 07 18 19 06 --- 15 20 39 43.7 132.6 -2.2 -45.3 359 R 1 8363 18 20 05 SGRA 15 21 39 30.1 143.5 -2.4 -39.8 27 1 9 8363 18 20 05 18 36 03 --- 15 37 39 32.2 146.7 -2.1 -36.2 957 F 1 4402 Schedule for VLBA_MK (Code Mk ) 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 --- 18 38 02 SGRA 15 39 39 32.5 147.2 -2.1 -35.7 113 1 10 4402 18 38 02 18 59 59 --- 16 01 39 35.1 152.0 -1.7 -30.3 1316 R 1 13246 19 01 59 NRAO530 16 03 39 50.4 144.4 -1.5 -34.2 83 1 10 13246 19 01 59 19 07 58 --- 16 09 39 51.2 146.3 -1.4 -32.4 359 R 1 8459 19 08 57 SGRA 16 10 39 36.1 154.1 -1.6 -28.0 24 1 11 8459 19 08 57 19 24 55 --- 16 26 39 37.6 158.1 -1.3 -23.7 957 F 1 4306 19 26 54 SGRA 16 28 39 37.8 158.6 -1.3 -23.2 113 1 12 4306 19 26 54 19 48 51 --- 16 50 39 39.4 164.3 -0.9 -16.9 1316 R 1 13342 19 50 50 NRAO530 16 52 39 55.6 162.3 -0.7 -17.0 81 1 12 13342 19 50 50 19 56 49 --- 16 58 39 56.0 164.8 -0.6 -14.6 359 R 1 8555 19 57 49 SGRA 16 59 39 39.9 166.8 -0.8 -14.2 22 1 13 8555 19 57 49 20 13 47 --- 17 15 39 40.7 171.3 -0.5 -9.4 957 F 1 4210 20 15 46 SGRA 17 17 39 40.7 171.9 -0.5 -8.8 113 1 14 4210 20 15 46 20 37 43 --- 17 39 39 41.2 178.2 -0.1 -1.9 1316 R 1 13438 20 39 42 NRAO530 17 41 39 57.0 183.8 0.1 3.7 82 1 14 13438 20 39 42 20 45 41 --- 17 47 39 56.9 186.5 0.2 6.2 359 R 1 8651 ----------- Tape Change ------------ 20 46 41 SGRA 17 48 39 41.2 180.8 0.0 0.9 22 2 1 8651 20 46 41 21 02 39 --- 18 04 39 41.0 185.5 0.3 5.9 957 F 1 4114 21 04 38 SGRA 18 06 39 40.9 186.0 0.3 6.5 113 2 1 4114 21 04 38 21 09 38 --- 18 11 39 40.8 187.5 0.4 8.0 299 F 1 8103 21 10 37 NRAO530 18 12 39 55.7 197.2 0.7 16.6 24 2 1 8103 21 10 37 21 16 36 --- 18 18 39 55.3 199.7 0.8 19.0 359 F 1 12890 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