Am 23. April 2007 konnte ich mit meiner Ausrüstung wieder 4 Bedeckungsereignisse mit einer hohen zeitlichen Genauigkeit auf Video erfassen und entsprechend auswerten. Mein Bericht ging wie immer an das International Lunar Occultation Center (ILOC) in Japan.

Beobachtungsbericht 2007/04/23

Observer Position                               Observer
48°  47´  13.5"  North  (WGS84)                 Gerhard Dangl
15°  14´  08.4"  East   (WGS84)                 Nonndorf 12
595m                    (WGS84)                 3830, Waidhofen/Thaya, AUSTRIA

TELESCOPE:
        Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: video/primary focus/recorded field 1112" x 830"
	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: good
	Temperature: 285 Kelvin (+12 deg Celsius)
	
ADDITIONAL COMMENTS:
	Predictions and report generation with WinOccult3.6
        A total of 4 disappearances on the dark limb of the moon recorded
	Video evaluation accomblished with VirtualDub1.6.16 and Limovie0.9.25
        Clear glass filter for CCD protection and Planet IR Pro 807nm Filter
        for more steady images were used from Astronomik.
        3-D position and timing with Garmin GPS18 LVC receiving 07 satellites
        Horizontal dilution of precision 1.5, geoidal separation 44.4m


Bild vom Aufbau der Ausrüstung





Tabelle mit den Berechnungen durchgeführt mit Occult3.6 von Dave Herald
Occultation Predictions for Nonndorf in April 2007
E.Long.   15 14  8.2   Lat.  48 47 13.5   Alt. 590m.   T.dia 250mm.   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 04 23 19 23  0 D   79868DK0  7.4   45+  84     52 243  77N  89  49  78 +7.3 -4.4 +1.4-1.1 .386  +26  8  1 30.3  23 54 46
     79868 is double :   7.2 10.7   1.30"  170.0
07 04 23 19 43 18 D    1208DK1  6.4   45+  84     48 248  14S 177 135 167 +7.3 -4.3 -0.8-4.2 .200  -63  8  1  0.8  23 34 59
      1208 is double :   6.5  9.9   2.1"  326.0
07 04 23 19 47 59 d X106694    11.1   45+  84     48 249  20S 171 128 161 +7.3 -4.3 -0.4-3.6 .247  -56  8  1 16.8  23 34 17
07 04 23 20  3 32 d X 12100 K2  9.9   45+  84     46 253  80S 111  67 101 +7.2 -4.3 +0.8-1.8 .449   +4  8  2 37.4  23 41 12



Tabelle mit den Resultaten der Beobachtung mit Videomessung
Nr.     Date        Pred.time UTC       Video time UTC       P     Stern     Mag   Alt   Az     Comment
        y  m  d     hh:mm:ss +/-s    hh:mm:ss.sss   +/- s                          deg   deg
 1    2007 04 23    19:23:00   1     19:23:00.307   0.010    D    S  79868   7.4   52    243
 2    2007 04 23    19:43:18   1     19:43:19.625   0.010    Ds   S  79864   6.4   48    248    Gradual occultation with
 2    2007 04 23    19:43:18   1     19:43:19.685   0.010    De   S  79864   6.4   48    248    duration of 60ms +/- 20ms
 3    2007 04 23    19:47:59   1     19:47:58.010   0.020    D    X 106694  11.1   48    249   
 4    2007 04 23    20:03:32   1     20:03:32.724   0.010    D    X  12100   9.9   46    253   


Diagramm der abgestuften Bedeckung(Nr.2) von SAO 79864 - Dauer 60ms +/- 20ms





Mein Bericht an das International Lunar Occultation Center (ILOC) in Japan:
(Erstellt mit Occult3.6 von Dave Herald)
PLACE NAME     Mobile station
ADDRESS        Nonndorf 12, A-3830, Austria
E-MAIL ADDRESS gerhard@dangl.at
REPRESENTATIVE Gerhard Dangl
REPORTED TO    ILOC

TA  NED  25.4  120.0   15 14 08.4  E  48 47 13.5  N  595.1GPS (WGS84)           

OA  Gerhard Dangl                        

012007042319230031 S  79868           1V MS  0011   12212                    AAA
    KIWI-OSD, WAT902H2Ultimate, IR-pass Filter >807nm
022007042319431965 S  79864           1V MS  0011   12112                    AAA
    KIWI-OSD, WAT902H2Ultimate, IR-pass Filter >807nm
032007042319475801 X 106694           1V MS  0011   12212                    AAA
    KIWI-OSD, WAT902H2Ultimate, IR-pass Filter >807nm
042007042320033272 X  12100           1V MS  0011   12212                    AAA
    KIWI-OSD, WAT902H2Ultimate, IR-pass Filter >807nm



Die Ergebnisse zu meinem Bericht, retourniert durch das ILOC:
(International Lunar Occultation Center (ILOC) in Japan)
INTERNATIONAL LUNAR OCCULTATION CENTER (ILOC)  PRELIMINARY REDUCTION OF LUNAR OCCULTATION OBSERVATIONS  FOR REPORT R1538
TEL CODE    1 LOCATION(E 15 14  8.40 N48 47 13.50  595.1M (DM 84 WGS84       )    TELESCOPE(AP  25CM FL 120CM TYPE NED)
OBS CODE    1 Gerhard Dangl                                     
 DATE     TIME(UTC)    AGE  CT STAR NO. MAG PH  TEL  OBS  REC O-C(")HW(") K-R(DEG)KM(DEG) H92     SOURCE     SAO    DM         REPORT DAT.NO.
 7  4 23  19 23  0.31   6.3 S    79868  9.1 DD    1    1    1  0.31 -0.61   343.5   88.6  H 12068 P    39235  79868 +24 1826   153800  0001 
 7  4 23  19 43 19.65   6.3 S    79864  6.4 DD    1    1    1  0.68  0.38    71.9  177.2  H 12056 P    39194  79864 +23 1866   153800  0002 
 7  4 23  19 47 58.01   6.3 X   106694 11.3 DD    1    1    1  0.43  2.39    65.3  170.6  H     0 T 19260480      0            153800  0003 
 7  4 23  20  3 32.72   6.4 X    12100 10.1 DD    1    1    1  0.25  0.24     5.7  111.0  H 12100 T 19260090      0 +24 1830   153800  0004 

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