Session Notes for session: r4024 Prepared by Merri Sue Carter, USNO. (msc@maia.usno.navy.mil) =========================================================== Parameter values for experiment R4024 Experiment description: NEOSA Scheduler: tbd Correlator: TBD Nominal start: 2002-164-18:30:00 Nominal end: 2002-165-19:00:00 Current yyyyddd: 2002164 (2002.45) ( 12439 MJD, THUR 13JUN.) Greenwich sidereal time: 11:57:35.03 (18:30: 0 UT) Sun's RA and DEC: 5h 27.6m 23d 13.8 ========================================================== The following sources were included for research purposes: 0253+133, 1117+146, 1705+135, 2029+121 Were not able to get 0508+138. =========================================================== First observations Observation listing from file ./r4024.skd for experiment R4024 Source Start DURATIONS name yyddd-hhmmss Kk Ap Ft Gc Ny Wz 0642+449 02164-183000| 117 142 142| 0718+793 02164-183000| 98 156 156 | 1749+096 02164-183459| 98 98| 0253+133 02164-183623| 317 98 317 | 1334-127 02164-183724| 98 98| End of listing. =========================================================== Last observations Observation listing from file ./r4024.skd for experiment R4024 Source Start DURATIONS name yyddd-hhmmss Kk Ap Ft Gc Ny Wz 1308+326 02165-182806| 115 115| End of listing. Observation listing from file ./r4024.skd for experiment R4024 Source Start DURATIONS name yyddd-hhmmss Kk Ap Ft Gc Ny Wz 3C418 02165-181347| 98 98 98 | 0552+398 02165-181833| 98 98| 0059+581 02165-181858| 320 98 122 320 | 1156+295 02165-182245| 278 278| 0253+133 02165-182641| 317 98 317 | 1308+326 02165-182806| 115 115| End of listing. =========================================================== SKED Summary from file ./r4024.skd for experiment R4024 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.3 Min = .0 Max = 64.0 (Baseline Ny-Wz on 1351-018) RMS = 5.0 Total time: 1440 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: 52 33 36 50 55 51 46 % cal. time: 2 2 2 3 2 2 2 % slew time: 13 49 29 19 14 10 22 % idle time: 31 14 31 26 26 35 27 # of tapes : .8 1.7 2.1 .8 .8 .8 total # scans: 251 246 179 279 256 255 244 # scans/hour : 10 10 7 11 10 10 10.2 Avg scan (sec): 180 116 177 157 186 173 164 tape change times (hhmm): 0000 0921 0527 0000 0000 0000 0000 0000 1756 0000 0000 0000 # OF OBSERVATIONS BY BASELINE | Kk Ap Ft Gc Ny Wz StnTotal -------------------------------------- Kk|251 117 24 199 82 38 460 Ap| 246 95 116 102 78 508 Ft| 179 33 67 111 330 Gc| 279 119 78 545 Ny| 256 173 543 Wz| 255 478 Number of 2-station scans: 318 Number of 3-station scans: 136 Number of 4-station scans: 81 Number of 5-station scans: 10 Number of 6-station scans: 8 Total # of scans, observations: 553 1432 =========================================================== 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