CORE-B702 (Continuous Observations of the Rotation of the Earth-B702) 2000 October 16 Notes prepared by Cynthia Thomas and Nancy Vandenberg,NVI/GSFC Schedule name: CB702.SKD on CDDISA Nominal Start: 16:00 U.T. on October 16 (day 290) first observation at 16:00 U.T. on 1749+096 for SM-65-FT-NY first observation at 16:00 U.T. on 0749+540 for AP-YK-TS Nominal Stop: 16:00 U.T. on October 17 (day 291) last observation at 15:45 U.T. on 1958-179 for YK last observation at 15:46 U.T. on 0749+540 for AP-YK-NY-TS last observation at 15:49 U.T. on 1622-253 for 65-FT Correlator: Haystack **Frequency Sequence**: CDPSX - Standard CDP SX sequence. (360 MHz wide at X, 85 MHz wide at S) 1 letter 2 letter Station Code Code # of tapes # of obs Occupation Code Algonquin G AP 2 (HDT) 251 72828201 Yellowknife X YK 2 (HDT) 147 72965101 Crimea C SM 2 (HDT) 163 73323401 DSS65 M 65 1 (TT) 276 13313301 Fortaleza F FT 1 (HDT) 133 72974801 Ny Alesund N NY 1 (TT) 281 73313301 Tsukuba T TS 1 (TT) 216 73452301 Purpose ======= The purpose of the CORE-B sessions is to obtain EOP data on days adjacent to the main NEOS and CORE-3 sessions and thus extend the span of continuous data. The secondary purpose of CORE-B is to provide observing sessions during which the stations can demonstrate their performance and their ability to participate in future regular CORE sessions. The CORE-B networks are numbered 7 and 8 to distinguish them from the networks used in 1999. Schedule ======== This is a new schedule generated by C. Thomas with the automatic mode of sked. The characteristics of the CORE-B schedules have changed slightly. Changes were made to smooth out the distribution of observations over the sky. Following are the characteristics of the CORE-B schedule file: 1) This schedule was optimized for sky coverage. 2) Only the observations in the previous 2 hours of the schedule were considered for the minor options. The best 60% of the configurations were considered for minor options. 3) The "minor options" were set to select observations to maximize the total number of observations, to minimize the idle time between scans, and to minimize time between scans on the same source by thirty minutes. 5) The minimum SNR limits for the baselines were set to 20 for X-band and 15 for S-band, with the exception of the Yellowknife baselines. The minimum SNR limits for the Yellowknife baselines were set to 15 for X-band and 12 for S-band. 6) This schedule was made using 66 sources which helped improve the sky coverage. 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 ==== ========= 00APR04 NEOS-A362 00APR11 NEOS-A363 00APR18 NEOS-A364 00APR18 CORE-A083 00APR24 IRIS-S149 00APR25 NEOS-A365 00MAY02 NEOS-A366 00JUN06 NEOS-A371 Procedures ========== Please generate the procedures for this session using drudg. Correlation ========== This experiment will be correlated at the Haystack Correlator with all baselines being correlated. SKED Summary from file ./cb702.skd for experiment CB702 (all scans with at least one subnet station) SOURCE |0 6 12 18 | #SCANS #OBS #Obs/bl 0003-066I x x xx xx x x x x I 10 20 2.5 0048-097I x x x x x x I 6 14 1.8 0059+581I x x x x x x x I 7 54 2.7 0104-408I x I 1 1 .8 0106+013I x x x x x x x x I 8 24 2.6 0119+115I x x xx x xx xx x x x x I 13 25 2.1 0119+041I x I 1 3 .3 0208-512I I 0 0 .0 0229+131Ix x I 2 12 1.1 0235+164I x x x I 3 10 .8 CTA26 I x x x x x x x x x xI 10 28 3.5 0402-362I x I 1 1 .5 0454-234I x x x xx x I 6 12 2.7 0458-020I x x x x x x xx x I 9 22 2.5 0530-727I I 0 0 .0 0528+134Ix x x x xx xx x x x x xx x xxxx xI 20 56 4.9 0537-441I I 0 0 .0 0552+398Ix xx xx x x x x xx x xx x x x xxx x xxxx xxx x I 29 275 17.5 0556+238I x x x x x I 5 18 1.5 0637-752I I 0 0 .0 0718+793I x x x x x x x I 7 30 1.4 0727-115I x x x xx x x I 7 17 2.4 0749+540Ix x x xx x x x x x xx x x xx x x x I 19 217 11.5 0804+499I x x x x I 4 15 .9 0805+410I x x x x x I 5 28 1.9 0823+033I xx xx x x x x xx x x x I 13 38 4.0 OJ287 I x xx x xx xx x xx x x x xxx x xI 19 42 3.4 0919-260I I 0 0 .0 0920-397I x I 1 1 .8 4C39.25 Ix xx xx x x x x x x x x x x x xx x xx x xI 23 208 13.3 OK290 Ix x x x x x x I 7 19 1.6 0955+476I x xx x x x x x xI 9 79 4.7 1034-293I x x x x I 4 10 2.6 1044+719Ix x x x x x x x x x x I 11 150 7.1 1053+815I x x x x x x x x I 8 61 3.2 1057-797I I 0 0 .0 1104-445I I 0 0 .0 1124-186I x x x x x I 5 11 1.7 1128+385I x x I 2 12 .8 1144-379I x I 1 1 .6 1219+044I xx x x x x x x x xx I 11 27 2.8 1255-316I x I 1 1 .5 1300+580I x x x x x x x x x x I 10 77 3.9 1334-127I I 0 0 .0 1351-018I I 0 0 .0 1357+769I x x x x x x x x I 8 106 5.8 1424-418I x I 1 1 2.2 1451-375I I 0 0 .0 1606+106I xx xx x xx x xx x x x x xx xxI 18 66 6.2 1622-253I x x x I 3 3 .8 NRAO512 I x x x x x x x x x I 9 51 3.4 1726+455I x I 1 6 .4 1739+522I x x xx x x x x x x xI 11 63 3.5 1741-038I xx x xx x x x x xx x x xI 14 32 3.7 1749+096I x x x x x x xx x x x I 11 82 7.9 1815-553I I 0 0 .0 1908-201I x xx x x x x x xI 9 19 3.0 1954-388I x xx I 3 5 4.0 1958-179I x x I 2 9 1.4 2005-489I I 0 0 .0 2052-474I I 0 0 .0 2121+053I x x x x x x x x I 8 34 3.5 2128-123I x x x I 3 3 .4 2134+00 I x I 1 1 .1 2145+067I x x x x x x x x x xx x x x x xI 16 67 6.7 2255-282I x x x x I 4 6 1.8 Total scans, obs: 420 2173 Average number of obs. per baseline per source (normalized by up-time) = 3.2 Min = .0 Max = 29.0 (Baseline Yk-Ny on 0552+398) RMS = 5.0 Total time: 1432 minutes ( 23.9 hours). Key: Ap=ALGOPARK Yk=ARIES_9M Sm=CRIMEA 65=DSS65 Ft=FORTLEZA Ny=NYALES20 Ts=TSUKUB32 Ap Yk Sm 65 Ft Ny Ts Avg % obs. time: 23 23 23 25 17 34 27 25 % cal. time: 2 1 1 3 1 3 2 2 % slew time: 55 18 25 46 22 15 10 27 % idle time: 18 55 49 24 58 47 59 44 # of tapes : 1.3 1.4 1.3 .4 1.0 .5 .5 total # scans: 251 147 163 276 133 281 216 209 # scans/hour : 10 6 6 11 5 11 9 8.7 Avg scan (sec): 79 138 123 80 112 104 108 106 # OF OBSERVATIONS BY BASELINE | Ap Yk Sm 65 Ft Ny Ts StnTotal ------------------------------------------ Ap|251 90 89 175 91 179 106 730 Yk| 147 46 66 27 95 120 444 Sm| 163 149 55 136 84 559 65| 276 104 216 115 825 Ft| 133 49 11 337 Ny| 281 170 845 Ts| 216 606 Number of 2-station scans: 113 Number of 3-station scans: 121 Number of 4-station scans: 94 Number of 5-station scans: 53 Number of 6-station scans: 36 Number of 7-station scans: 3 Total # of scans, observations: 420 2173 Average baseline components for all observations Average XY = 5420. Average XZ = 4362. Average YZ = 4280. Average length = 5954.