Session Notes for session: r4030 Prepared by Merri Sue Carter, USNO. (msc@maia.usno.navy.mil) =========================================================== Parameter values for experiment R4030 Experiment description: NEOSA Scheduler: tbd Correlator: TBD Nominal start: 2002-206-18:30:00 Nominal end: 2002-207-19:00:00 Current yyyyddd: 2002206 (2002.56) ( 12481 MJD, THUR 25JUL.) Greenwich sidereal time: 14:43:10.36 (18:30: 0 UT) Sun's RA and DEC: 8h 19.7m 19d 34.2 ========================================================== The following sources were included for research purposes: CEN-A 1622-297 1706-174 =========================================================== First observations Observation listing from file ./r4030.skd for experiment R4030 Source Start DURATIONS name yyddd-hhmmss Ap Ft Kk Ma Ny Wz 1357+769 02206-183000| 113 113 98 98| 1611+343 02206-183000| 98 98 | 2201+315 02206-183416| 98 98 | 1334-127 02206-183433| 98 98 98| 1749+096 02206-183700| 98 98 98| End of listing. =========================================================== Last observations Observation listing from file ./r4030.skd for experiment R4030 Source Start DURATIONS name yyddd-hhmmss Ap Ft Kk Ma Ny Wz 1726+455 02207-182834| 98 137 98 137| End of listing. Observation listing from file ./r4030.skd for experiment R4030 Source Start DURATIONS name yyddd-hhmmss Ap Ft Kk Ma Ny Wz 0133+476 02207-180647| 98 193 98 193| 2201+315 02207-181044| 98 98 | 1334-127 02207-181126| 98 98 98| 1622-253 02207-181529| 432 419 432| 1606+106 02207-182504| 98 98 98 98| 1726+455 02207-182834| 98 137 98 137| End of listing. =========================================================== SKED Summary from file ./r4030.skd for experiment R4030 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 4.4 Min = .0 Max = 36.5 (Baseline Ny-Wz on 1741-038) RMS = 6.1 Total time: 1440 minutes ( 24.0 hours). Key: Ap=ALGOPARK Ft=FORTLEZA Kk=KOKEE Ma=MATERA Ny=NYALES20 Wz=WETTZELL Ap Ft Kk Ma Ny Wz Avg % obs. time: 28 25 33 39 28 39 32 % cal. time: 2 1 1 2 2 2 2 % slew time: 55 22 9 18 17 8 21 % idle time: 13 50 54 39 51 49 43 # of tapes : 1.5 1.4 .5 .6 .4 .6 total # scans: 211 127 170 200 255 221 197 # scans/hour : 8 5 7 8 10 9 8.2 Avg scan (sec): 114 174 172 171 98 154 147 tape change times (hhmm): 1018 1155 0000 0000 0000 0000 # OF OBSERVATIONS BY BASELINE | Ap Ft Kk Ma Ny Wz StnTotal -------------------------------------- Ap|211 92 126 81 148 100 547 Ft| 127 36 88 75 93 384 Kk| 170 39 132 59 392 Ma| 200 149 199 556 Ny| 255 169 673 Wz| 221 620 Number of 2-station scans: 109 Number of 3-station scans: 124 Number of 4-station scans: 55 Number of 5-station scans: 64 Number of 6-station scans: 9 Total # of scans, observations: 361 1586 =========================================================== 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 MATERA 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 =========================================================== 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) Ma MATERA 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 5) S-band (margin 3) Ap Ft Kk Ma Ny Ap Ft Kk Ma Ny Ft 20 Ft 15 Kk 20 20 Kk 15 15 Ma 20 20 20 Ma 15 15 15 Ny 0 0 0 0 Ny 0 0 0 0 Wz 20 20 20 20 0 Wz 15 15 15 15 0