Session Notes for session: r4021 Prepared by Merri Sue Carter, USNO. (msc@maia.usno.navy.mil) =========================================================== Parameter values for experiment R4021 Experiment description: NEOSA Scheduler: tbd Correlator: TBD Nominal start: 2002-143-18:30:00 Nominal end: 2002-144-19:00:00 Current yyyyddd: 2002143 (2002.39) ( 12418 MJD, THUR 23MAY.) Greenwich sidereal time: 10:34:47.37 (18:30: 0 UT) Sun's RA and DEC: 4h 1.5m 20d 39.1 ========================================================== The following sources were included for research purposes: 1004+141, 1522+155, 1922+155, CTA102 Did not observe 0319+121. was 12.6 degrees from sun =========================================================== First observations Observation listing from file ./r4021.skd for experiment R4021 Source Start DURATIONS name yyddd-hhmmss Kk Ap Ft Gc Ny Wz 0642+449 02143-183000| 117 142 142| 0718+793 02143-183000| 98 156 156 | 0955+476 02143-183445| 98 98 | 1522+155 02143-183459| 489 489| 3C446 02143-183459| 98 98 | End of listing. =========================================================== Last observations Observation listing from file ./r4021.skd for experiment R4021 Source Start DURATIONS name yyddd-hhmmss Kk Ap Ft Gc Ny Wz 0458-020 02144-182849| 193 122 193 | End of listing. Observation listing from file ./r4021.skd for experiment R4021 Source Start DURATIONS name yyddd-hhmmss Kk Ap Ft Gc Ny Wz 1004+141 02144-181536| 110 110| 1351-018 02144-182124| 149 149| 0202+149 02144-182416| 98 98 98 | 1606+106 02144-182440| 98 98| 0955+476 02144-182738| 166 166 | 0458-020 02144-182849| 193 122 193 | End of listing. =========================================================== SKED Summary from file ./r4021.skd for experiment R4021 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.4 Min = .0 Max = 48.0 (Baseline Ny-Wz on 1351-018) RMS = 4.8 Total time: 1442 minutes ( 24.0 hours). Key: Kk=KOKEE Ap=ALGOPARK Ft=FORTLEZA Gc=GILCREEK Ny=NYALES20 Wz=WETTZELL Kk Ap Ft Gc Ny Wz Avg % obs. time: 50 32 35 50 58 50 46 % cal. time: 2 2 2 3 3 2 2 % slew time: 14 48 27 18 15 10 22 % idle time: 32 16 35 27 23 36 28 # of tapes : .8 1.7 2.0 .8 .9 .8 total # scans: 241 235 178 271 261 258 240 # scans/hour : 10 9 7 11 10 10 10.0 Avg scan (sec): 182 118 171 161 193 168 165 tape change times (hhmm): 0000 0951 0512 0000 0000 0000 # OF OBSERVATIONS BY BASELINE | Kk Ap Ft Gc Ny Wz StnTotal -------------------------------------- Kk|241 109 34 202 91 37 473 Ap| 235 105 113 109 88 524 Ft| 178 37 64 108 348 Gc| 271 132 82 566 Ny| 261 187 583 Wz| 258 502 Number of 2-station scans: 290 Number of 3-station scans: 124 Number of 4-station scans: 86 Number of 5-station scans: 20 Number of 6-station scans: 8 Total # of scans, observations: 528 1498 =========================================================== Recording mode Name Code NEOS-WB NW Recording mode setup for: KOKEE GILCREEK NYALES20 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 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 =========================================================== Tape types ID Station Tape length Density Kk KOKEE 17400feet (Thin ) 56250. (High) Ap ALGOPARK 8700feet (Thick) 33333. (Low ) Ft FORTLEZA 8700feet (Thick) 33333. (Low ) Gc GILCREEK 17400feet (Thin ) 56250. (High) Ny NYALES20 17400feet (Thin ) 56250. (High) Wz WETTZELL 17400feet (Thin ) 56250. (High) =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 10) S-band (margin 6) Kk Ap Ft Gc Ny Kk Ap Ft Gc Ny Ap 20 Ap 15 Ft 20 20 Ft 15 15 Gc 20 20 20 Gc 15 15 15 Ny 20 20 20 20 Ny 15 15 15 15 Wz 20 20 20 20 20 Wz 15 15 15 15 15