Grafik erstellt mit Guide 8 von Bill J Gray
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Am 07. August 2007 bedeckte der Erdmond den Sternhaufen der Plejaden (M45). Ab etwa 02h00 MESZ trat der Mond in 20 Grad Höhe über dem Osthorizont vor den Sternhaufen der Plejaden M45. Bis um etwa 04h30 MESZ bedeckte der Mond durch seine Eigenbewegung nach Osten vor dem Fixsternhimmel zahlreiche Sterne aus diesem bekannten Sternhaufen.
Bis etwa 04h09 MESZ konnte ich mit meiner Ausrüstung in dieser Nacht 16 Bedeckungsereignisse, das Hervortreten der Sterne am dunklen Mondrand, mit einer hohen zeitlichen Genauigkeit im Bereich von einigen Millisekunden auf Video erfassen und entsprechend auswerten. Mein Bericht mit den Daten der Messungen wird wie immer auch an das International Lunar Occultation Center (ILOC) in Japan gesendet.
Beobachtungsbericht 2007/08/07
Observer Position Observer 48° 47´ 13.4" North (WGS84) Gerhard Dangl 15° 14´ 08.3" East (WGS84) Nonndorf 12 586m (WGS84) 3830, Waidhofen/Thaya - AUSTRIA
TELESCOPE: Type: Newton Focal length: 1200mm Aperture: 254 mm Magnification: video/primary focus/recorded field 946" x 822" Mount: Equatorial EQ6 Motor drive: Yes TIMING & RECORDING: Timekeeping: GPS 1PPS Garmin18 LVC + KIWI-OSD Sensor/Camera: WAT-902H2 Ultimate, CCIR, 1/2" Sony CCD-Sensor ICX429ALL Mode of recording: It=20ms (50 Img/s), Video CCIR, AVI, YUY2, Huffyuv, Device of recording: Xpert V-Stream Videograbber USB2.0, Notebook Harddisk Time insertion: KIWI-OSD OBSERVING CONDITIONS: Atmospheric transparency: fair Wind: No Star image stability: fair Temperature: 288 Kelvin (+15 deg Celsius) ADDITIONAL COMMENTS: Predictions with WinOccult3.6 A total of 16 reappearances on the dark limb of the moon recorded Video evaluation accomblished with VirtualDub 1.6.16 and Limovie 0926dT3 Only clear glass filter (Astronomik) for CCD protection was used 3-D position and timing with Garmin GPS18 LVC receiving 08 satellites Horizontal dilution of precision 1.1, geoidal separation 44.4mBei der Beobachtung und Messung verwendete Komponenten
Bild vom Aufbau der Ausrüstung neben dem Wohnhaus
Der Erdmond und der Sternhaufen der Plejaden (M45) - 07. August 2007 um 01h39 MESZ
DSLR Canon EOS 20D, Canon EF 70-300 IS UMS @300mm, f9.0, 2.5 sec., ISO 800
Tabelle mit den Berechnungen durchgeführt mit Occult3.6 von Dave Herald
Occultation Predictions for Nonndorf_10Zoll in August 2007 E.Long. 15 14 8.2 Lat. 48 47 13.5 Alt. 590m. T.dia 254mm. dMag 2.0 day Time P Star Sp Mag % Elon Sun Moon CA PA VA WA Libration A B RV Cct R.A. (J2000) Dec y m d h m s No D V ill Alt Alt Az o o o o L B m/o m/o "/sec o h m s o m s 07 08 07 0 27 42 r 76113 A2 8.1v 37- 75 25 81 34N 314 0 327 +3.1 -6.0 +1.2+0.3 .243 +115 3 44 0.3 24 33 25 76113 = V1187 Tau, 8.28 +/- 0.02 B , Type DSCTC 07 08 07 0 29 6 r 76104 A7 8.3v 37- 75 26 81 78N 270 316 283 +3.1 -6.0 +0.3+1.4 .535 +159 3 43 43.2 24 22 28 76104 = V0624 Tau, 8.23 to 8.25 V , Type DSCTC 07 08 07 0 31 35 R 537SB6 3.7s 37- 75 26 82 18S 186 232 199 +3.1 -6.0 -1.0+2.9 .260 -117 3 44 52.5 24 6 48 537 = Electra = 17 Tauri 537 is triple : 3.9 7.0 0.005" 0.0 : 3.9 7.5 0.196" 117.0 537 = NSV 15755, 3.70 +/- 0.00 V , Type 07 08 07 0 46 55 R 76119cA5 8.1 37- 74 28 84 87N 261 308 274 +3.1 -6.0 +0.3+1.5 .547 +167 3 44 25.7 24 23 41 76119 is double : 9.3 9.3 0.100" 139.0 07 08 07 0 51 5 R 536cB7 5.5 37- 74 29 85 65S 234 280 246 +3.1 -6.0 +0.0+1.9 .539 -165 3 44 48.2 24 17 22 536 = Celaeno = 16 Tauri 536 is double : 5.7 7.7 0.100" 90.0 07 08 07 0 54 59 r 76136 A0 8.5 37- 74 29 86 54S 223 269 235 +3.1 -6.0 -0.1+2.1 .499 -154 3 45 6.5 24 15 49 07 08 07 1 0 10 r X 33145 10.6 37- 74 30 87 89N 260 306 273 +3.1 -6.0 +0.3+1.6 .542 +169 3 44 56.4 24 25 57 07 08 07 1 7 27 R 539SB6 4.3 36- 74 32 88 87N 262 309 275 +3.1 -6.0 +0.4+1.5 .531 +166 3 45 12.5 24 28 2 539 = Taygeta = 19 Tauri 539 is multiple : 0.000" 348.0 : 4.6 6.1 0.012" 0.0 : 4.3 8.1 71" 329.0 07 08 07 1 10 54 R 76152cB9 7.2s 36- 74 32 89 59S 228 275 241 +3.1 -6.0 +0.0+2.0 .512 -160 3 45 37.8 24 20 8 76152 is double : 7.4 9.0 0.200" 359.0 76152 = NSV 15762, 7.17 +/- 0.00 V , Type VAR: 07 08 07 1 17 15 R 541cB8 3.9 36- 74 33 90 62S 231 278 244 +3.1 -6.0 +0.1+2.0 .517 -163 3 45 49.6 24 22 4 541 = Maia = 20 Tauri 541 is double : 4.4 5.4 0.003" 69.0 07 08 07 1 26 33 R 542 B8 5.8 36- 74 35 91 82N 267 313 279 +3.1 -6.0 +0.5+1.5 .506 +161 3 45 54.5 24 33 16 542 = Asterope = 21 Tauri 07 08 07 1 29 50 R 543cA0 6.4 36- 74 35 92 90N 259 305 271 +3.1 -6.0 +0.5+1.6 .523 +169 3 46 2.9 24 31 40 543 is double : 7.3 7.3 0.100" 0.0 07 08 07 1 52 16 R 548cB9 6.8 36- 74 39 96 72S 240 287 253 +3.0 -6.1 +0.4+1.9 .513 -172 3 46 59.4 24 31 12 548 is double : 6.8 0.200" 4.0 07 08 07 2 5 29 R 76194 A0 7.7 36- 74 41 99 77S 246 292 259 +3.0 -6.1 +0.5+1.8 .509 -178 3 47 24.1 24 35 18 07 08 07 2 8 55 r X 4907DB8 8.8 36- 74 42 99 89N 259 305 272 +3.0 -6.1 +0.7+1.5 .497 +168 3 47 26.5 24 39 30 X 4907 is double : 8.5 11.0 6.8" 331.0
Tabelle mit den Resultaten der Beobachtung mit Videomessung
Nr. Video Graph MPEG4 Limovie Date Pred.time UTC Video time 50% change P Star Mag Alt Az Name Brightness Brightness 1.7MB Analysis y m d hh:mm:ss +/-s hh:mm:ss.sss +/- s deg deg change start change end 01 Video 01 Graph 2007 08 07 00:27:42 1 00:27:43.555 0.010 R SAO 76113 8.1 25 81 00:27:43.545 00:27:43.565 02 Video 02 Graph 2007 08 07 00:29:06 1 00:29:07.044 0.010 R SAO 76104 8.3 26 81 00:29:07.044 00:29:07.064 03 Video 03 Graph 2007 08 07 00:31:35 1 00:31:35.652 0.010 RL SAO 76131 3.7 26 82 Electra 00:31:35.482 00:31:35.702 04 Video 04 Graph 2007 08 07 00:46:55 1 00:46:56.197 0.010 RS SAO 76119 8.1 28 84 00:46:56.187 00:46:56.207 05 Video 05 Graph 2007 08 07 00:51:05 1 00:51:05.323 0.010 R SAO 76126 5.5 29 85 Celaeno 00:51:05.303 00:51:05.343 06 Video 06 Graph 2007 08 07 00:54:59 1 00:54:59.490 0.010 R SAO 76136 8.5 29 86 00:54:59.480 00:54:59.500 07 Video 07 Graph 2007 08 07 01:00:10 1 01:00:10.420 0.010 R X 33145 10.6 30 87 01:00:10.405 01:00:10.435 08 Video 08 Graph 2007 08 07 01:07:27 1 01:07:27.748 0.010 R SAO 76140 4.3 32 88 Taygeta 01:07:27.718 01:07:27.768 09 Video 09 Graph 2007 08 07 01:10:54 1 01:10:54.305 0.010 RS SAO 76152 7.2 32 89 01:10:54.255 01:10:54.385 10 Video 10 Graph 2007 08 07 01:17:15 1 01:17:15.669 0.010 RL SAO 76155 3.9 33 90 Maia 01:17:15.589 01:17:15.709 11 Video 11 Graph 2007 08 07 01:26:33 1 01:26:34.430 0.010 R SAO 76159 5.8 35 91 Asterope 01:26:34.410 01:26:34.450 12 Video 12 Graph 2007 08 07 01:29:50 1 01:29:50.347 0.010 R SAO 76164 6.4 35 92 Stereope 01:29:50.337 01:29:50.367 13 Video 13 Graph 2007 08 07 01:52:16 1 01:52:15.876 0.010 R SAO 76183 6.8 39 96 01:52:15.866 01:52:15.886 14 Video 14 Graph 2007 08 07 02:05:29 1 02:05:29.193 0.010 RL SAO 76194 7.7 41 99 02:05:29.133 02:05:29.213 15 Video 15 Graph 2007 08 07 02:08:55 1 02:08:50.520 0.010 R XZ 4906 11.0 42 99 02:08:50.490 02:08:50.530 16 Video 16 Graph 2007 08 07 02:08:55 1 02:08:55.180 0.010 R XZ 4907 8.6 42 99 02:08:55.150 02:08:55.210 P = phenomenon key: D ... Disappearance of the star R ... Reappearance of the star L ... long duration of total brightness change (> 80ms) S ... step in the graph of brightness change
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