CORE-1005 (Continuous Observations of the Rotation of the Earth-1005) 2000 October 30 Notes prepared by Cynthia Thomas and Nancy Vandenberg,NVI/GSFC Session code: C1005 Schedule file: oct00/c1005.skd on CDDISA Nominal Start: 17:30 U.T. on October 30 (day 304) first observation at 17:30 U.T. on 4C39.25 for AP-GC-TS first observation at 17:30 U.T. on 0048-097 for HH-HO-MA Nominal Stop: 17:30 U.T. on October 31 (day 305) last observation at 17:14 U.T. on 0104-408 for HH last observation at 17:16 U.T. on 0749+540 for MA last observation at 17:19 U.T. on OJ287 for AP-GC last observation at 17:24 U.T. on 0229+131 for HO-TS Correlator: Haystack Observing mode: Formatter mode C Frequency sequence CDP-WBCA (720 MHz span at X, 125 MHz span at S) (modified wide-band, shifted to avoid RFI at Matera) Number of frequencies 14 Number of channels 14 (8 X-band, 6 S-band) Channel bandwidth 2.0 MHz Sample rate 4 Mb/s Bits per sample 1 Total data rate 56 Mb/s Data rate on tape 4 Mb/s/track Fan-out none Tape speed 80 ips (high density), 135 ips (low density) Tracks per sub-pass 14 Number of sub-passes 2 (each head position) Passes per tape 12 Barrel roll no Track frame format Mark3 1 letter 2 letter Station Code Code # of tapes # of obs Occupation Code Algonquin G AP 2 (HDT) 257 72828201 Fairbanks A GC 1 (TT) 337 40476601 HartRAO J HH 1 (TT) 194 72326201 Hobart H HO 2 (HDT) 219 72425901 Matera I MA 1 (TT) 268 72435701 Tsukuba T TS 1 (TT) 386 73452301 Purpose ======= The CORE-1 sessions provide 72 hours of continuous data once a month from July to December, 2000. These sessions will help reach CORE's goal of continuous data. The CORE-1 sessions use the same stations that participated in the CORE-A sessions in the first half of 2000. The CORE-A sessions, recorded simultaneously with NEOS since 1997, have provided 85 sessions with the purpose of studying differences in EOP results measured with different networks. This study is still continuing using the data already obtained. Schedule ======== This schedule was made by C. Thomas using sked. Schedule setup parameters: Early start 10 sec Minimum scan length 70 sec Maximum scan length 600 sec Minimum SNR 20 at X-band 15 at S-band Automatic scheduling setup: optimize for uniform sky coverage at all stations, maximize the number of observations, minimize slewing time, minimize time between scans, consider the top 50% of ranked scans for selection, consider the last 3 hours of scans for sky coverage calculations, minimum 40 min between scans on the same source. The characteristics of the generated schedule are listed below. These will vary slightly for each schedule that is generated. Schedule characteristics: Average scan length 110 sec Average SNR 63.1 at X-band, 48.1 at S-band Number of observations (delay measurements) 1408 obs Average number of scans per station 276 scans Flux Information ================ Program snranal compares the measured performance of a session with respect to the predicted. The program calculates an empirical flux density for each source. In order to account for changes in the flux catalog since the last update based on source modeling, the fluxes in the flux catalog for the sources in the current source catalog were adjused using the following databases: Date Session ==== ========= 00MAY02 NEOS-A366 00MAY08 IRIS-S150 00MAY09 NEOS-A367 00MAY10 CORE-B701 00MAY15 EUROPE-56 00MAY16 NEOS-A368 00MAY23 NEOS-A369 00MAY30 NEOS-A370 00JUN06 NEOS-A371 Procedures ========== Please generate the procedures for this session using drudg. SKED Summary from file ./c1005.skd for experiment C1005 (all scans with at least one subnet station) SOURCE |0 6 12 18 | #SCANS #OBS #Obs/bl 0003-066Ix x x xx x x x xx x xx x x x xx x x I 20 34 5.5 0048-097Ix x x x x x x x x x x I 11 28 4.7 0059+581I x x x x x x I 6 33 3.3 0104-408I x x x x xx x xxx x x xx x I 15 21 6.3 0119+115I x x xx x x x x xx x xx x x x x x I 18 32 4.2 0119+041I x x x xx x x x xx x x xx x x x xx I 19 36 5.3 0208-512I I 0 0 .0 0229+131I x x x xxx x x I 8 12 1.8 0235+164I x x x x I 4 10 1.3 CTA26 I x x x x xx x x x xxx x I 13 13 2.1 0402-362I x x x x I 4 4 1.2 0454-234Ix xx xx xx x x xx x xx x x x x x xI 20 30 5.7 0458-020I x x x x x x x x x x x x x xI 14 34 5.4 0528+134I x x x x x x x x x xx x x x x I 15 23 2.9 0537-441Ixx x xx xx x x x x x I 12 12 3.5 0552+398I x x x x x x xx x xx x xx xx x xx x x xxI 23 83 9.8 0556+238I x x x x x x xx x x xx x xx I 15 17 1.8 0637-752I x x x x x I 5 5 2.0 0727-115I x xx xx xx x x x x x x x x x xI 17 30 5.4 0749+540Ix x x x xx x x x x xx x x x x xx x x x x I 22 114 11.5 0804+499I x x x I 3 12 1.3 0805+410I x x I 2 6 .6 0823+033I x x x x x x x x x x x xx x x xx x I 18 22 3.2 OJ287 Ix x x x x x x x x xx xx x x I 15 15 1.8 0919-260I I 0 0 .0 0920-397I I 0 0 .0 4C39.25 I xx x x xx x x x x xx x x x x xI 17 55 5.2 OK290 I x x x x x x x x x x xI 11 11 1.2 0955+476Ixx xx x x x x x x x I 11 46 5.3 1034-293Ix xx x x xx xx xx xx xx I 15 15 2.4 1044+719I x x x x x x x x x x I 10 40 4.0 1053+815I x x x x x x I 6 18 1.8 1057-797I x x x x I 4 4 1.6 1104-445I I 0 0 .0 1124-186Ix x x x x x x xx xx x xx xx x xI 18 29 5.4 1128+385I x x x x x x x I 7 21 2.5 1144-379Ixx x xx x x x xx x x x x x I 15 21 6.4 1219+044Ix xx xx x xx xx x x x xx x xx x x x xx xI 24 59 8.7 1255-316I I 0 0 .0 1300+580I x x x x x x x x x I 9 21 2.1 1313-333I I 0 0 .0 1334-127I I 0 0 .0 1351-018I I 0 0 .0 1357+769I x x x x x x x xI 8 45 4.5 1424-418I x x I 2 2 .6 1451-375I x x x x I 4 4 1.2 1606+106I xx xx xx x x x xx xx x x x x x x xx xx x xI 25 57 7.9 1622-253I xx xx x xx x x xx x xxx x x x I 18 20 3.6 NRAO512 I x x x xx x x x x x x x x x x xI 16 47 4.6 1726+455I x x x x x x I 6 6 .7 1739+522Ix x x x x x x x x I 9 27 2.9 1741-038Ix xx xx xx xx x xx x x xx x x x xx x xI 23 25 4.1 1749+096I xx x x x x x x I 8 28 4.1 1815-553I x x I 2 2 .8 1908-201I x x x x x xx x x x I 10 10 1.8 1954-388I xx x xx xx x x xx I 11 11 3.0 1958-179I x x xx xx xx x x x x x x x x x I 17 32 6.1 2052-474I x x I 2 2 .5 2121+053Ix xx x x xx xx x x xx x x xx xx x x x x x I 24 66 9.6 2128-123I x xx x x I 5 5 2.4 2145+067I x x xx x x I 6 10 1.4 2234+282I x x x xx x x x xx x x x x x x xx I 18 42 4.4 2255-282I x I 1 1 .2 Total scans, obs: 661 1408 Average number of obs. per baseline per source (normalized by up-time) = 3.4 Min = .0 Max = 30.9 (Baseline Gc-Ts on 2128-123) RMS = 5.3 Total time: 1435 minutes ( 23.9 hours). Key: Ap=ALGOPARK Gc=GILCREEK Hh=HARTRAO Ho=HOBART26 Ma=MATERA Ts=TSUKUB32 Ap Gc Hh Ho Ma Ts Avg % obs. time: 24 39 33 26 42 42 34 % cal. time: 2 3 2 2 3 4 3 % slew time: 53 23 40 40 20 18 32 % idle time: 19 33 23 29 34 33 29 # of tapes : 1.3 .6 .5 1.5 .7 .7 total # scans: 257 337 194 219 268 386 276 # scans/hour : 10 14 8 9 11 16 11.5 Avg scan (sec): 80 100 148 105 135 95 110 # OF OBSERVATIONS BY BASELINE | Ap Gc Hh Ho Ma Ts StnTotal -------------------------------------- Ap|257 210 23 7 120 110 470 Gc| 337 6 41 105 234 596 Hh| 194 72 138 46 285 Ho| 219 21 175 316 Ma| 268 100 484 Ts| 386 665 Number of 2-station scans: 391 Number of 3-station scans: 201 Number of 4-station scans: 69 Number of 5-station scans: 0 Number of 6-station scans: 0 Total # of scans, observations: 661 1408 Average baseline components for all observations Average XY = 5413. Average XZ = 6017. Average YZ = 5492. Average length = 7384.