Session Notes for session: r4027 Prepared by Merri Sue Carter, USNO. (msc@maia.usno.navy.mil) =========================================================== Parameter values for experiment R4027 Experiment description: NEOSA Scheduler: tbd Correlator: TBD Nominal start: 2002-183-18:30:00 Nominal end: 2002-184-19:00:00 Current yyyyddd: 2002183 (2002.50) ( 12458 MJD, TUES 2JUL.) Greenwich sidereal time: 13:12:29.59 (18:30: 0 UT) Sun's RA and DEC: 6h 46.5m 23d .4 ========================================================== The following sources were included for research purposes: 1551+130, 0748+126, CTA102, 0536+146 =========================================================== First observations Observation listing from file ./r4027.skd for experiment R4027 Source Start DURATIONS name yyddd-hhmmss Ap Ft Kk Ny Sh Wz 1357+769 02183-183000| 98 98 98 | 1334-127 02183-183000| 98 98| 1741-038 02183-183401| 98 98| 0528+134 02183-183746| 98 339 402 402 | 0133+476 02183-184553| 98 177 98 110 177| End of listing. =========================================================== Last observations Observation listing from file ./r4027.skd for experiment R4027 Source Start DURATIONS name yyddd-hhmmss Ap Ft Kk Ny Sh Wz 1749+096 02184-182637| 98 98 98| End of listing. Observation listing from file ./r4027.skd for experiment R4027 Source Start DURATIONS name yyddd-hhmmss Ap Ft Kk Ny Sh Wz 3C446 02184-181222| 98 98 | 4C39.25 02184-181416| 98 167 167 98| 2136+141 02184-181926| 98 98 98 | 0727-115 02184-182254| 98 98 98 | 1351-018 02184-182334| 123 123| 1749+096 02184-182637| 98 98 98| End of listing. =========================================================== SKED Summary from file ./r4027.skd for experiment R4027 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 2.9 Min = .0 Max = 80.0 (Baseline Ny-Wz on 1351-018) RMS = 5.0 Total time: 1438 minutes ( 24.0 hours). Key: Ap=ALGOPARK Ft=FORTLEZA Kk=KOKEE Ny=NYALES20 Sh=SESHAN25 Wz=WETTZELL Ap Ft Kk Ny Sh Wz Avg % obs. time: 23 23 40 48 36 43 35 % cal. time: 2 1 2 2 1 2 1 % slew time: 47 19 11 13 33 8 22 % idle time: 26 56 45 36 28 45 39 # of tapes : 1.2 1.3 .6 .8 .5 .7 total # scans: 177 106 180 193 154 190 166 # scans/hour : 7 4 7 8 6 7 6.9 Avg scan (sec): 114 188 196 216 203 198 185 tape change times (hhmm): 1438 1341 0000 0000 0000 0000 # OF OBSERVATIONS BY BASELINE | Ap Ft Kk Ny Sh Wz StnTotal -------------------------------------- Ap|177 78 113 114 49 99 453 Ft| 106 33 61 7 79 258 Kk| 180 94 104 53 397 Ny| 193 96 149 514 Sh| 154 84 340 Wz| 190 464 Number of 2-station scans: 134 Number of 3-station scans: 88 Number of 4-station scans: 65 Number of 5-station scans: 38 Number of 6-station scans: 3 Total # of scans, observations: 328 1213 =========================================================== Recording mode Name Code NEOS-WB NW Recording mode setup for: ALGOPARK FORTLEZA Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 135.00 X-band spanned bw= 680.0 MHz rms spanned bw= 252.6 MHz S-band spanned bw= 110.0 MHz rms spanned bw= 43.7 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 Recording mode setup for: KOKEE NYALES20 SESHAN25 WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 80.00 X-band spanned bw= 680.0 MHz rms spanned bw= 252.6 MHz S-band spanned bw= 110.0 MHz rms spanned bw= 43.7 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 =========================================================== Tape types ID Station Tape length Density Ap ALGOPARK 8700feet (Thick) 33333. (Low ) Ft FORTLEZA 8700feet (Thick) 33333. (Low ) Kk KOKEE 17400feet (Thin ) 56250. (High) Ny NYALES20 17400feet (Thin ) 56250. (High) Sh SESHAN25 17400feet (Thin ) 56250. (High) Wz WETTZELL 17400feet (Thin ) 56250. (High) =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 3) Ap Ft Kk Ny Sh Ap Ft Kk Ny Sh Ft 20 Ft 15 Kk 20 20 Kk 15 15 Ny 20 20 20 Ny 15 15 15 Sh 20 20 20 20 Sh 15 15 15 15 Wz 20 20 20 20 20 Wz 15 15 15 15 15