Session Notes for RD1208 Prepared by Jing Sun, IGG, Vienna University of Technology Note: 1) This schedule was prepared with VIE_SCHED. 2) This schedule has 29 scans with observations at about 4 deg from the Sun(see table in notes file below). =========================================================== PURPOSE AND GENERAL NOTES =========================================================== With the start of the IVS observing program in 2002 (based on the WG2 Report), sources were only scheduled when they had an angular distance to the Sun of more than 15 deg. Based on data from RDV and VCS experiments, Sebastien Lambert (Paris Observatory) expects that the inclusion of sources closer to the Sun can improve the determination of the post-Newtonian parameter gamma by 15% (even with a modest number of observations below 15 deg per session; for instance, 1-2 observations per session). The purpose of RD1208 is to provide observational data to support this claim and, if successful, to eventually change the general IVS scheduling to include one or two observations per session close to the Sun. This is the eighth session to support observations close to the Sun. The RD1208 schedule uses the R1 frequency setup. It was generated using SNRs of 20 at X-band and 15 at S-band for all stations except TIGO which was scheduled with values of 18 and 12. All stations have been fully scheduled. The schedule uses a selection of 87 sources from the good geodetic source list plus six extra sources with a closer angular distance to the Sun. There are six sources with an angular distance less than 15 deg to the Sun: 1145-071, 1149-084, 1213-172, 1219+044, 1236+077, and 1243-072. The limit for the angular distance to the Sun was set to 3 deg and a regular R1 scheduling was done. This resulted in 78 observational scans with a distance to the Sun ranging from 3.5 deg to 14.5 deg. These scans are observed by network of the following seven stations: Hh, Kk, Ny, On, Tc, Ts, Wz. Scans with observations close to the Sun Source Start DURATIONS name yyddd-hhmmss Hh Kk Ny On Tc Ts Wz ------------------------------------------------------- 1213-172 12276-173428| 417 417 |14.5 deg from sun 1243-072 12276-174157| 607 607 | 4.3 deg from sun 1243-072 12276-195003| 516 516 | 4.2 deg from sun 1213-172 12276-201506| 356 356 |14.5 deg from sun 1145-071 12276-203710| 175 175 |12.7 deg from sun 1219+044 12276-204044| 112 112 | 9.0 deg from sun 1236+077 12276-204309| 54 54 |11.5 deg from sun 1243-072 12276-204439| 509 509 | 4.2 deg from sun 1149-084 12276-205346| 40 40 |12.1 deg from sun 1236+077 12276-210335| 624 624 |11.5 deg from sun 1219+044 12276-211433| 112 112 | 9.0 deg from sun 1213-172 12276-211703| 353 353 |14.5 deg from sun 1243-072 12276-212801| 506 506 | 4.2 deg from sun 1243-072 12276-215153| 505 505 116 | 4.2 deg from sun 1213-172 12276-220054| 353 353 58 |14.5 deg from sun 1149-084 12276-220720| 40 40 |12.1 deg from sun 1219+044 12276-222805| 112 112 | 9.0 deg from sun 1243-072 12276-223032| 504 116 | 4.1 deg from sun 1213-172 12276-230013| 40 40 |14.5 deg from sun 1243-072 12276-231833| 40 40 | 4.1 deg from sun 1145-071 12276-234329| 176 176 |12.8 deg from sun 1236+077 12277-000650| 54 54 |11.5 deg from sun 1243-072 12277-000821| 40 40 | 4.1 deg from sun 1243-072 12277-005906| 40 40 | 4.1 deg from sun 1149-084 12277-011213| 40 40 |12.2 deg from sun 1219+044 12277-013425| 115 115 | 9.1 deg from sun 1243-072 12277-014402| 40 40 | 4.0 deg from sun 1213-172 12277-020216| 40 40 |14.5 deg from sun 1243-072 12277-023228| 40 40 | 4.0 deg from sun 1145-071 12277-024714| 224 224 |12.9 deg from sun 1149-084 12277-025130| 40 40 |12.2 deg from sun 1236+077 12277-030317| 58 58 |11.6 deg from sun 1243-072 12277-032047| 40 40 | 4.0 deg from sun 1243-072 12277-045749| 40 40 | 3.9 deg from sun 1219+044 12277-045906| 95 95| 9.2 deg from sun 1213-172 12277-051313| 40 40 |14.5 deg from sun 1243-072 12277-054401| 40 40 | 3.9 deg from sun 1145-071 12277-055516| 183 183 |13.0 deg from sun 1149-084 12277-055924| 72 40 72|12.3 deg from sun 1236+077 12277-060901| 572 559 572 161 329|11.6 deg from sun 1243-072 12277-064010| 67 40 67| 3.9 deg from sun 1219+044 12277-064859| 431 431 193 308| 9.3 deg from sun 1213-172 12277-072012| 40 40|14.5 deg from sun 1243-072 12277-073221| 132 132 40 132| 3.8 deg from sun 1243-072 12277-082409| 126 126 119| 3.8 deg from sun 1149-084 12277-090724| 189 189 77|12.4 deg from sun 1236+077 12277-091218| 517 485 517 272|11.7 deg from sun 1243-072 12277-092237| 123 123 113| 3.8 deg from sun 1219+044 12277-095354| 387 387 269| 9.4 deg from sun 1243-072 12277-101350| 121 121 110| 3.8 deg from sun 1149-084 12277-101729| 187 187 76|12.4 deg from sun 1213-172 12277-102202| 261 421 421 150|14.5 deg from sun 1236+077 12277-102955| 512 478 512 269|11.7 deg from sun 1213-172 12277-105607| 261 421 421 150|14.5 deg from sun 1243-072 12277-110348| 121 121 109| 3.7 deg from sun 1213-172 12277-111943| 261 261 |14.5 deg from sun 1243-072 12277-112533| 409 409 | 3.7 deg from sun 1149-084 12277-113403| 189 189 |12.5 deg from sun 1213-172 12277-114208| 261 261 |14.5 deg from sun 1243-072 12277-114758| 409 409 | 3.7 deg from sun 1243-072 12277-122937| 409 409 | 3.7 deg from sun 1213-172 12277-123755| 261 261 |14.5 deg from sun 1219+044 12277-123959| 394 394 275| 9.5 deg from sun 1213-172 12277-131218| 261 261 |14.5 deg from sun 1243-072 12277-131811| 124 124 115| 3.7 deg from sun 1145-071 12277-133432| 417 417|13.2 deg from sun 1236+077 12277-134214| 525 495 525 277|11.8 deg from sun 1243-072 12277-135241| 126 126 120| 3.6 deg from sun 1213-172 12277-141255| 261 261 194|14.5 deg from sun 1243-072 12277-142538| 409 409 | 3.6 deg from sun 1149-084 12277-143630| 76 76|12.6 deg from sun 1213-172 12277-143912| 261 261 |14.5 deg from sun 1243-072 12277-144502| 409 409 | 3.6 deg from sun 1213-172 12277-145845| 261 261 |14.5 deg from sun 1243-072 12277-150435| 409 409 | 3.6 deg from sun 1219+044 12277-154508| 372 372| 9.6 deg from sun 1236+077 12277-164522| 437 437|11.8 deg from sun 1243-072 12277-171425| 717 717 | 3.5 deg from sun ------------------------------------------------------- Sources with observations close to the Sun (indicated by an 'x') 4 chars/hour SOURCE | 0 3 6 9 12 15 18 21 | #SCANS #OBS #Obs/bl ---------------------------------------------------------------------------------------------------------- 1145-071| x x x x x | 5 5 0.0 1149-084| x x x x x x x x x | 9 15 0.0 1213-172| x x x x x xx x x x xx x x x x x | 17 31 0.0 1219+044| x x x x x x x x x | 9 18 0.0 1236+077|x x x x x x x x x | 9 33 0.0 1243-072|x x x x x x x x x x x x xx x x x x x xx x x x x x x x x | 29 50 0.0 ---------------------------------------------------------------------------------------------------------- Total scans, obs: 78 152 Scans with observations of about 4 deg to the Sun (source 1243-072) Source Start ANGULAR DISTANCE TO SUN name yyddd-hhmmss Hh Kk Ny On Tc Ts Wz ------------------------------------------------------- 1243-072 12276-174157| 4.3 4.3 | 1243-072 12276-195003| 4.2 4.2 | 1243-072 12276-204439| 4.2 4.2 | 1243-072 12276-212801| 4.2 4.2 | 1243-072 12276-215153| 4.2 4.2 4.2 | 1243-072 12276-223032| 4.1 4.1 | 1243-072 12276-231833| 4.1 4.1 | 1243-072 12277-000821| 4.1 4.1 | 1243-072 12277-005906| 4.1 4.1 | 1243-072 12277-014402| 4.0 4.0 | 1243-072 12277-023228| 4.0 4.0 | 1243-072 12277-032047| 4.0 4.0 | 1243-072 12277-045749| 3.9 3.9 | 1243-072 12277-054401| 3.9 3.9 | 1243-072 12277-064010| 3.9 3.9 3.9| 1243-072 12277-073221| 3.8 3.8 3.8 3.8| 1243-072 12277-082409| 3.8 3.8 3.8| 1243-072 12277-092237| 3.8 3.8 3.8| 1243-072 12277-101350| 3.8 3.8 3.8| 1243-072 12277-110348| 3.7 3.7 3.7| 1243-072 12277-112533| 3.7 3.7 | 1243-072 12277-114758| 3.7 3.7 | 1243-072 12277-122937| 3.7 3.7 | 1243-072 12277-131811| 3.7 3.7 3.7| 1243-072 12277-135241| 3.6 3.6 3.6| 1243-072 12277-142538| 3.6 3.6 | 1243-072 12277-144502| 3.6 3.6 | 1243-072 12277-150435| 3.6 3.6 | 1243-072 12277-171425| 3.5 3.5 | ------------------------------------------------------- Kokee and Wettzell will observe INT IN112-276 during the time from 1815 UT to 1945UT. =========================================================== ----- Parameter listing -------------------------------------- Experiment: RD1208 Description R&D-08 2012 Scheduler: TUW Correlator: HAYS Start: 2012-276-17:30:00 End: 2012-277-17:30:00 Current yyyyddd: 2012276 (2012.75) ( 56202 MJD, TUE. 02OCT.) Greenwich sidereal time: 18:17:20 (17:30:00 UT) Sun's RA and DEC: 12h36m27s -4d4m19s =========================================================== First observations Observation listing from file ./rd1208.skd for experiment RD1208 Source Start DURATIONS name yyddd-hhmmss Hh Kk Ny On Tc Ts Wz 0716+714 12276-173000| 177 191 191 66 137| 1639-062 12276-173000| 231 231 | ...... End of listing. =========================================================== Last observations Observation listing from file ./rd1208.skd for experiment RD1208 Source Start DURATIONS name yyddd-hhmmss Hh Kk Ny On Tc Ts Wz ...... 1243-072 12277-171425| 717 717 | 0019+058 12277-171535| 334 318 334 83 218| End of listing. =========================================================== SKED Summary from file ./rd1208.skd for experiment RD1208 (all scans with at least one subnet station) Calculating rise/set times: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 ... done. Average number of obs. per baseline per source(normalized by up-time) = 3.8 Min = 0.0 Max = 84.7 (Baseline Tc-Ts on 0420-014) RMS = 6.5 Total time: 1431 minutes ( 23.9 hours). Key: Hh=HARTRAO Kk=KOKEE Ny=NYALES20 On=ONSALA60 Tc=TIGOCONC Ts=TSUKUB32 Wz=WETTZELL Hh Kk Ny On Tc Ts Wz Avg % obs. time: 41 55 53 61 34 27 43 45 % cal. time: 2 3 4 3 1 4 4 3 % slew time: 34 14 17 20 2 13 8 16 % idle time: 21 26 25 15 62 56 45 36 total # scans: 205 276 314 299 120 325 302 263 # scans/hour : 9 12 13 13 5 14 13 11 Avg scan (sec): 173 171 145 174 243 70 122 156 # OF OBSERVATIONS BY BASELINE | Hh Kk Ny On Tc Ts Wz StnTotal --------------------------------------------- Hh| 0 84 111 57 42 119 413 Kk| 109 97 45 201 79 531 Ny| 206 8 175 238 820 On| 13 126 214 767 Tc| 20 17 160 Ts| 124 688 Wz| 791 Number of 2-station scans: 288 Number of 3-station scans: 157 Number of 4-station scans: 131 Number of 5-station scans: 54 Number of 6-station scans: 0 Number of 7-station scans: 0 Total # of scans, observations: 630 2085 =========================================================== Recording mode Name Code GEOSX SX Recording mode setup for: HARTRAO KOKEE NYALES20 ONSALA60 TIGOCONC TSUKUB32 WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 256.000 Mbits 128.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 0.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 140.0 MHz rms spanned bw= 50.9 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 =========================================================== Tape types ID Station Tape length Density Passes Hh HARTRAO MARK5B Kk KOKEE MARK5A Ny NYALES20 MARK5A On ONSALA60 MARK5A Tc TIGOCONC MARK5B Ts TSUKUB32 K5 Wz WETTZELL MARK5A =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) Hh Kk Ny On Tc Ts Hh Kk Ny On Tc Ts Kk 20 Kk 15 Ny 20 20 Ny 15 15 On 20 20 20 On 15 15 15 Tc 18 18 18 18 Tc 12 12 12 12 Ts 20 20 20 20 18 Ts 15 15 15 15 12 Wz 20 20 20 20 18 20 Wz 15 15 15 15 12 15 ===========================================================