SUMMARY FILE FOR PROJECT: th025b COVER INFORMATION: Experiment: Huygens Probe VLBI Tracking Exp. Code: th025b Start Day 362 is Mon 27 Dec 2004 MJD 53366 Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Jon Romney Address: NRAO/AOC Phone: x7360 EMAIL: jromney@aoc.nrao.edu Fax: Phone during observation: AOC Control Room Observing mode: VLBA Notes: Test A for Huygens Setup No cover letter provided. CORRELATION REQUESTS (Defaults in parentheses): Correlator (Required if recording): VLBA Correlator average time (2 sec): 2.000 sec. Alternate average time (for spacecraft). 0.000 sec. Spectral channels per baseband (16): 128 Number of antennas to be correlated: 10 Polarization (ON): ON Correlator weighting function (UNIFORM): UNIFORM Distribution tape (DAT): DAT Source positions from: STANDARD Shipping address for correlator output: PI AOC mailbox Correlator Notes: DERIVED INFORMATION FOR CORRELATION: Elapsed time for project: 0.17 hours. Total time in scheduled scans: 0.25 hours. Total time in recording scans: 0.17 hours. Total number of baseline hours: 6.00 (Recording scans only) Projected maximum data output rate from the correlator: 294.9 kbytes/sec if processed in one pass. Projected correlator output data set size: 176.9 Mbytes NOTE: Above numbers assume the same correlator parameters are used for all data. STATIONS USED IN SCHEDULE: Station Code Latitude Longitude Elevation X Y Z VLBA_PT Pt 34.30102 108.11919 2365. -1640953.71 -5014816.02 3575411.88 VLBA_KP Kp 31.95630 111.61242 1902. -1995678.63 -5037317.71 3357328.13 VLBA_LA La 35.77512 106.24560 1962. -1449752.36 -4975298.59 3709123.93 VLBA_BR Br 48.13122 119.68328 251. -2112064.98 -3705356.52 4726813.80 VLBA_FD Fd 30.63503 103.94482 1606. -1324009.13 -5332181.96 3231962.47 VLBA_NL Nl 41.77142 91.57414 222. -130872.25 -4762317.11 4226851.04 VLBA_OV Ov 37.23165 118.27705 1196. -2409150.11 -4478573.23 3838617.40 VLBA_MK Mk 19.80138 155.45550 3763. -5464074.96 -2495249.12 2148296.84 BASELINE LENGTHS (km) Pt Kp La Br Fd Nl Ov Mk Pt 0 417 236 1806 564 1663 973 4795 Kp 417 0 652 1913 744 2075 845 4466 La 236 652 0 1757 608 1432 1088 4970 Br 1806 1913 1757 0 2345 2300 1214 4398 Fd 564 744 608 2345 0 1654 1508 5134 Nl 1663 2075 1432 2300 1654 0 2328 6156 Ov 973 845 1088 1214 1508 2328 0 4015 Mk 4795 4466 4970 4398 5134 6156 4015 0 RECORDING SYSTEM INFORMATION: DISKS - Stations potentially recording on disks. Station Drive type VLBA_PT MARK5A VLBA_KP MARK5A VLBA_LA MARK5A VLBA_BR MARK5A VLBA_FD MARK5A VLBA_NL MARK5A VLBA_OV MARK5A VLBA_MK MARK5A EXPERIMENT SUMMARY: Number of input scans: 3 Number of scans scheduled: 3 Number of stations: 8 Number of sources input: 1 Number of setup files used: 2 Station summaries (tape stations): Station Control Scans Scan Hours Tape hours Tapes Passes Readbacks Station summaries (disk stations): Station Control Scans Scan Hours Record hrs Gbytes VLBA_PT VLBA 3 0.25 0.17 39. VLBA_KP VLBA 3 0.25 0.17 39. VLBA_LA VLBA 3 0.25 0.17 39. VLBA_BR VLBA 3 0.25 0.17 39. VLBA_FD VLBA 3 0.25 0.17 39. VLBA_NL VLBA 3 0.25 0.17 39. VLBA_OV VLBA 3 0.25 0.17 39. VLBA_MK VLBA 3 0.25 0.17 39. Setup file: set16.set Matches group v13cm_1 in ./freq_gg057c.dat LA,NL only 2200-2400 Setup group: 1 Station: VLBA Total bit rate: 512 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 1st LO= 2900.00 2900.00 2900.00 2900.00 2900.00 2900.00 2900.00 2900.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP RCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A A A C A C VLBA FE= 13cm omit 13cm omit VLBA Synth= 15.4 2.9 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 2034.99 2034.99 2139.99 2286.99 2040.30 2040.30 2098.20 2098.20 BBC fr= 865.01 865.01 760.01 613.01 859.70 859.70 801.80 801.80 Bandwd= 16.000 16.000 16.000 16.000 1.000 1.000 1.000 1.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 S5 S6 S7 S8 PCALXB2= M1 M2 M3 M4 M5 M6 M7 M8 PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19, 66, 82, 67, 83 barrel=roll_auto Setup file: huygS.set Matches group v13cm_1 in ./freq_gg057c.dat LA,NL only 2200-2400 Setup group: 2 Station: VLBA Total bit rate: 512 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 1st LO= 2900.00 2900.00 2900.00 2900.00 2900.00 2900.00 2900.00 2900.00 Net SB= L L U U L U L U Pol. = RCP LCP RCP LCP RCP RCP RCP RCP BBC = 1 2 1 2 3 3 4 4 BBC SB= U U L L U L U L IF = A C A C A A A A VLBA FE= 13cm omit 13cm omit VLBA Synth= 15.4 2.9 15.4 The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 1 LO sum= 2034.99 2034.99 2034.99 2034.99 2139.99 2139.99 2286.99 2286.99 BBC fr= 865.01 865.01 865.01 865.01 760.01 760.01 613.01 613.01 Bandwd= 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 S5 S6 S7 S8 PCALXB2= M1 M2 M3 M4 M5 M6 M7 M8 PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19, 66, 82, 67, 83 barrel=roll_auto SUMMARY for experiment th025b Huygens Probe VLBI Tracking Top item is: Start elevation, flag (D=>Down, H=>Below Horizon, t=>Tape Change.) Bottom item is: Seconds antenna is on source during scan. TYPE top: -=> normal scan, P=>Pointing or Ta; bottom: -=>recording, N=>not recording. Day 362 is Mon 27 Dec 2004 MJD 53366 DAY START UT SOURCE TYPE STATIONS t => tape change STOP UT Pt Kp La Br Fd Nl Ov Mk 362 23:15:00 3C454.3 - 71 72 70 55 75 63 64 39 362 23:20:00 set16.set N 300 300 300 300 300 300 300 300 362 23:20:00 3C454.3 - 71 72 70 55 76 63 65 40 362 23:25:00 huygS.set - 296 296 296 296 296 296 296 296 362 23:25:00 3C454.3 - 72 73 70 56 76 62 66 42 362 23:30:00 - - 296 296 296 296 296 296 296 296 SUMMARY for experiment th025b Huygens Probe VLBI Tracking Top item is: Start azimuth, flag (D=>Down, H=>Below Horizon, t=>Tape Change.) Bottom item is: Scan end: Tape drive, direction, and head index. Disk Gbytes. TYPE top: -=> normal scan, P=>Pointing or Ta; bottom: -=>recording, N=>not recording. Day 362 is Mon 27 Dec 2004 MJD 53366 DAY START UT SOURCE TYPE STATIONS t => tape change STOP UT Pt Kp La Br Fd Nl Ov Mk 362 23:15:00 3C454.3 - 162 149 168 149 172 202 141 85 362 23:20:00 set16.set N Stop Stop Stop Stop Stop Stop Stop Stop 362 23:20:00 3C454.3 - 165 152 171 151 177 205 144 85 362 23:25:00 huygS.set - 19 19 19 19 19 19 19 19 362 23:25:00 3C454.3 - 169 156 175 153 182 207 146 86 362 23:30:00 - - 38 38 38 38 38 38 38 38 SUMMARY for experiment th025b Huygens Probe VLBI Tracking Top item is: Seconds tape starts before scan start time. Bottom item is: Nothing requested with SUMITEM. TYPE top: -=> normal scan, P=>Pointing or Ta; bottom: -=>recording, N=>not recording. Day 362 is Mon 27 Dec 2004 MJD 53366 DAY START UT SOURCE TYPE STATIONS t => tape change STOP UT Pt Kp La Br Fd Nl Ov Mk 362 23:15:00 3C454.3 - 0 0 0 0 0 0 0 0 362 23:20:00 set16.set N 362 23:20:00 3C454.3 - 0 0 0 0 0 0 0 0 362 23:25:00 huygS.set - 362 23:25:00 3C454.3 - 0 0 0 0 0 0 0 0 362 23:30:00 - - TAPE TIMES (Without autoallocation): Tape start time. Tape end time. Station Day Time Day Time (UT) (UT) VLBA_PT 362 23:20:00 362 23:30:00 VLBA_KP 362 23:20:00 362 23:30:00 VLBA_LA 362 23:20:00 362 23:30:00 VLBA_BR 362 23:20:00 362 23:30:00 VLBA_FD 362 23:20:00 362 23:30:00 VLBA_NL 362 23:20:00 362 23:30:00 VLBA_OV 362 23:20:00 362 23:30:00 VLBA_MK 362 23:20:00 362 23:30:00 SOURCE LIST -- Huygens Probe VLBI Tracking 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) J2253+1608 22 51 29.519733 * 22 53 57.747932 22 54 11.403312 2251+158 15 52 54.34806 * 16 08 53.56089 16 10 28.89537 * 3C454.3 /home/filehost/cwalker/sched/catalogs/sources.vlba J2253+16 ICRF - Ext.1 Source - 1998 IERS Annual Report 0.167 scan hours, 4.604 baseline hours above horizon. 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) 3C454.3 75.9 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 Source separations in degrees for pairs closer than 30.00 degrees. J2000 coordinates formatted for possible transfer to the correlator data base: name = '3C454.3' ra = 22h53m57.747932s dec = 16d08'53.56089" Catalog versions: Station Catalog: Frequency Catalog: Code versions: Release version: NRAO internal release of 4 October 2004 Version of sched code: 5.25 Version of VEX standard: 1.50 Version of VEX code: 0.79 Version of plot code: 1.05 Version of ephemeris code: 1.01 Version of PGPLOT: v5.2.0