Session Notes for rd1001 Prepared by K. Baver and J. Gipson, NVI, Inc./GSFC Schedule date: 2010-Jan-27 This is a follow up to a series of four 2009 R&D sessions whose purpose was to improve scheduling of the Intensive sessions. We divide the six stations in this session into two subnets which are scheduled independently: 1.) The first subnet is the intensive network of Kokee-Wettzell. This will start at 19:46, after the conclusion of the intensive on January 27, and end at 17:46 on January 28. 2.) The second subnet is Matera, NyAlesund, Tsukuba, and Westford. This runs from 18:00 on January 27 to 18:00 on January 28. The Kokee-Wettzell network is scheduled as a series of 22 consecutive, independent intensives starting at 19:46. A) STANDARD INTENSIVES. The intensives that start within odd hours (e.g., 19:46, 21:46, 23:46... etc) are scheduled using the standard intensive sources and scheduling strategy. B) TEST INTENSIVES. The intensives that start within even hours (e.g., 20:46, 22:46, 00:46, ... etc) are scheduled using an enlarged source list. Unlike 24 hour sessions, which can observe the whole sky, intensives can observe only a small slice of the sky, and this slice varies depending on when the intensive starts and the time of the year. Because of this, the results from the sessions might depend on what part of the sky is observed. In the previous R&D sessions, the start times were chosen so that intensives would be consistent between sessions. The STANDARD INTENSIVES always looked at a part of the sky sampled by STANDARD INTENSIVES in other sessions. The TEST INTENSIVES looked at a part of the sky observed by TEST INTENSIVES in other sessions. In this session, to control for the fact that each of the STANDARD and TEST INTENSIVE series observed only half of the sky in the previous sessions, we swap things around. Each STANDARD INTENSIVE will observe a slice of the sky previously observed by a TEST INTENSIVE, and vice-versa. The four station network observes independently and serves as an independent external check on EOP. The GSFC analysis center will analyze the 22 pseudo intensive sessions with a view towards determining if one of the scheduling strategies is better in terms of things like: lower formal errors; better agreement with independent measures of UT1; and robustness of the schedule. The schedule uses the standard R1 256 data-rate. =========================================================== ----- Parameter listing -------------------------------------- Experiment: RD1001 Description R&D-01 2010. Intensive test Scheduler: NASA Correlator: HAYSTACK Start: 2010-027-18:00:00 End: 2010-028-18:00:00 Current yyyyddd: 2010027 (2010.07) ( 15224 MJD, WED. 27JAN.) Greenwich sidereal time: 2:27: 0.00 (18: 0: 0 UT) Sun's RA and DEC: 20h 40.4m -18d 20.7 =========================================================== First observations Observation listing from file ./rd1001.skd for experiment RD1001 Source Start DURATIONS name yyddd-hhmmss Kk Ma Ny Ts Wf Wz 0059+581 10027-180000| 46 30 30 46 | 1418+546 10027-180208| 114 59 30 114 | 2000+472 10027-180513| 111 61 30 111 | OJ287 10027-180901| 30 30 30 | 0716+714 10027-181046| 60 43 30 60 | 1128+385 10027-181247| 30 30 30 | 3C371 10027-181432| 76 49 30 76 | 1617+229 10027-181630| 112 46 112 | 0345+460 10027-182020| 393 201 98 393 | 0748+126 10027-182437| 30 30 | . . . . 1044+719 10027-194600| 61 61| 1739+522 10027-194748| 55 55| 0106+013 10027-194750| 38 30 38 | 2356+385 10027-194935| 116 116| 0748+126 10027-195033| 30 30 30 | 0955+476 10027-195221| 106 106 54 | 1128+385 10027-195250| 40 40| 1418+546 10027-195410| 40 40| 2000+472 10027-195538| 40 30 40 | 0014+813 10027-195539| 78 78| End of listing. =========================================================== Last observations Observation listing from file ./rd1001.skd for experiment RD1001 Source Start DURATIONS name yyddd-hhmmss Kk Ma Ny Ts Wf Wz 1617+229 10028-173714| 107 44 107 | 1300+580 10028-173919| 58 58| 0955+476 10028-174008| 105 105 50 | 0955+476 10028-174055| 85 85| 1803+784 10028-174313| 40 40| 4C39.25 10028-174449| 41 41| 0536+145 10028-174540| 124 124 45 | 1418+546 10028-174935| 113 59 30 113 | 1357+769 10028-175218| 208 101 53 208 | 1128+385 10028-175647| 30 30 30 | OJ287 10028-175818| 30 30 30 | End of listing. =========================================================== SKED Summary from file ./rd1001.skd for experiment RD1001 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 2.6 Min = 0.0 Max = 66.5 (Baseline Kk-Wz on 0528+134) RMS = 7.6 Total time: 1439 minutes ( 24.0 hours). Key: Kk=KOKEE Ma=MATERA Ny=NYALES20 Ts=TSUKUB32 Wf=WESTFORD Wz=WETTZELL Kk Ma Ny Ts Wf Wz Avg % obs. time: 60 56 45 29 53 60 50 % cal. time: 6 4 5 4 4 6 5 % slew time: 20 27 27 14 14 11 19 % idle time: 14 12 23 51 29 22 26 total # scans: 547 338 417 350 325 547 420 # scans/hour : 23 14 17 15 14 23 18 Avg scan (sec): 94 142 93 72 140 94 105 # data tracks: 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 Total GBytes: 1853 1727 1401 905 1642 1853 1563 Total GB(M5): 1647 1535 1246 804 1460 1647 1390 # of tapes : 1.0 1.0 1.0 0.1 1.0 1.0 tape change times (hhmm): Total number of tapes: 5.1 Total GBytes (M5) recorded: 8337.9 # OF OBSERVATIONS BY BASELINE | Kk Ma Ny Ts Wf Wz StnTotal ---------------------------------------- Kk| 0 0 0 0 547 547 Ma| 336 265 256 0 857 Ny| 344 321 0 1001 Ts| 252 0 861 Wf| 0 829 Wz| 547 Number of 2-station scans: 569 Number of 3-station scans: 218 Number of 4-station scans: 183 Number of 5-station scans: 0 Number of 6-station scans: 0 Total # of scans, observations: 970 2321 ===========================================================