COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_NL (Code Nl ) 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 14 36 11 21.7 133.0 -2.9 -34.1 0 1 1 0 13 19 55 13 25 54 --- 14 42 11 22.5 134.3 -2.8 -33.2 359 F 1 4787 13 26 54 SGRA 14 43 11 7.6 140.9 -3.0 -32.6 24 1 1 4787 13 26 54 13 42 51 --- 14 59 11 9.5 143.9 -2.8 -30.2 957 F 1 17552 13 44 51 SGRA 15 01 11 9.7 144.3 -2.7 -29.9 113 1 2 17552 13 44 51 14 06 47 --- 15 23 11 11.9 148.6 -2.4 -26.4 1316 R 1 0 14 08 47 NRAO530 15 25 11 27.7 144.3 -2.1 -26.5 82 1 3 0 14 08 47 14 14 46 --- 15 31 11 28.4 145.8 -2.0 -25.5 359 F 1 4787 14 15 46 SGRA 15 32 11 12.8 150.4 -2.2 -24.9 23 1 3 4787 14 15 46 14 31 43 --- 15 48 11 14.2 153.7 -2.0 -22.2 957 F 1 17552 14 33 43 SGRA 15 50 11 14.4 154.1 -1.9 -21.9 113 1 4 17552 14 33 43 14 55 39 --- 16 12 11 16.0 158.8 -1.6 -18.0 1316 R 1 0 14 57 39 NRAO530 16 14 11 32.2 157.1 -1.3 -17.3 81 1 5 0 14 57 39 15 03 38 --- 16 20 11 32.6 158.8 -1.2 -16.1 359 F 1 4787 15 04 37 SGRA 16 21 11 16.6 160.8 -1.4 -16.3 22 1 5 4787 15 04 37 15 20 35 --- 16 37 11 17.5 164.3 -1.1 -13.3 957 F 1 17552 15 22 35 SGRA 16 39 11 17.6 164.7 -1.1 -13.0 113 1 6 17552 15 22 35 15 44 31 --- 17 01 11 18.5 169.7 -0.7 -8.8 1316 R 1 0 15 46 31 NRAO530 17 03 11 34.7 171.1 -0.5 -6.8 81 1 7 0 15 46 31 15 52 30 --- 17 09 11 34.9 172.9 -0.4 -5.5 359 F 1 4787 15 53 29 SGRA 17 10 11 18.7 171.8 -0.6 -7.0 22 1 7 4787 15 53 29 16 09 27 --- 17 26 11 19.1 175.5 -0.3 -3.9 957 F 1 17552 16 11 27 SGRA 17 28 11 19.1 175.9 -0.3 -3.5 113 1 8 17552 16 11 27 16 33 23 --- 17 50 11 19.2 181.0 0.1 0.9 1316 R 1 0 16 35 23 NRAO530 17 52 11 35.0 185.6 0.3 4.3 82 1 9 0 16 35 23 16 41 22 --- 17 58 11 34.8 187.4 0.4 5.7 359 F 1 4787 Schedule for VLBA_NL (Code Nl ) 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 --- 16 42 21 SGRA 17 59 11 19.2 183.1 0.2 2.6 22 1 9 4787 16 42 21 16 58 19 --- 18 15 11 18.9 186.8 0.5 5.8 957 F 1 17552 17 00 18 SGRA 18 17 11 18.9 187.2 0.5 6.2 113 1 10 17552 17 00 18 17 22 15 --- 18 39 11 18.2 192.3 0.9 10.4 1316 R 1 0 17 24 15 NRAO530 18 41 11 32.9 199.8 1.1 15.1 84 1 11 0 17 24 15 17 30 14 --- 18 47 11 32.6 201.5 1.2 16.3 359 F 1 4787 17 31 13 SGRA 18 48 11 17.8 194.3 1.0 12.1 24 1 11 4787 17 31 13 17 47 11 --- 19 04 11 16.9 197.8 1.3 15.2 957 F 1 17552 17 49 10 SGRA 19 06 11 16.8 198.3 1.3 15.5 113 1 12 17552 17 49 10 18 11 07 --- 19 28 11 15.4 203.1 1.7 19.5 1316 R 1 0 18 13 07 NRAO530 19 30 11 28.9 212.9 2.0 24.6 87 1 13 0 18 13 07 18 19 06 --- 19 36 11 28.3 214.4 2.1 25.7 359 F 1 4787 18 20 05 SGRA 19 37 11 14.7 205.0 1.9 21.1 27 1 13 4787 18 20 05 18 36 03 --- 19 53 11 13.4 208.3 2.1 23.9 957 F 1 17552 18 38 02 SGRA 19 55 11 13.2 208.7 2.2 24.2 113 1 14 17552 18 38 02 18 59 59 --- 20 17 11 11.1 213.1 2.5 27.8 1316 R 1 0 ----------- Tape Change ------------ 19 01 59 NRAO530 20 19 11 23.2 224.6 2.8 32.5 90 2 1 0 19 01 59 19 07 58 --- 20 25 11 22.4 225.9 2.9 33.4 359 F 1 4787 19 08 57 SGRA 20 26 11 10.1 214.9 2.7 29.2 29 2 1 4787 19 08 57 19 24 55 --- 20 42 11 8.4 218.0 2.9 31.6 957 F 1 17552 19 26 54 SGRA 20 44 11 8.1 218.3 3.0 31.9 113 2 2 17552 19 26 54 19 48 51 --- 21 06 11 5.5 222.4 3.3 35.1 1316 R 1 0 19 50 50 NRAO530 21 08 11 16.2 234.9 3.6 38.8 92 2 3 0 19 50 50 19 56 49 --- 21 14 11 15.3 236.1 3.7 39.4 359 F 1 4787 19 57 49 SGRA 21 15 11 4.3 224.0 3.5 36.3 32 2 3 4787 19 57 49 20 13 47 --- 21 31 11 2.2 226.8 3.8 D 38.4 0 F 1 17552 20 39 42 NRAO530 21 57 11 8.3 244.1 4.4 43.5 1538 2 4 17552 20 39 42 20 45 41 --- 22 03 11 7.3 245.1 4.5 44.0 359 R 1 12765 Schedule for VLBA_NL (Code Nl ) 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 10 37 NRAO530 22 28 11 3.0 249.5 4.9 45.8 1481 2 4 12765 21 10 37 21 16 36 --- 22 34 11 2.0 250.5 5.0 D 46.2 0 R 1 7978 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