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                 ASTERIODAL OCCULTATION - REPORT FORM

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           	           EAON & IOTA-ES

               EUROPEAN ASTEROIDAL OCCULTATION NETWORK

    INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

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1.DATE: 2010/09/06
  STAR: TYC 2416-00777-1
  ASTEROID: (326) Tamara

2.OBSERVER:
  	Name: Gerhard Dangl
	Phone: ++43-(0)2842-53908
	Address: AUSTRIA, A-3830, Nonndorf 12
	E-mail: gerhard@dangl.at

3.OBSERVING STATION:
	Nearest city: Waidhofen/Thaya
	Latitude:  N 48 47 13.3 (WGS84)
	Longitude: E 15 14 08.2 (WGS84)
	Altitude:  592m         (WGS84)
	Single/Multiple: Single

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4.TIMING OF EVENTS:
	Occultation recorded: POSITIVE
	Type of event:
	"S"tart observation; "I"nterrupt-"s"tart; "D"isappearance;
	"B"link; "F"lash; "E"nd observation; "I"nterrupt-"e"nd;
	"R"eappearance; "O"ther (specify)
	
	Personal Equation Substracted: No
	Event Time (UT)		P.E. Accuracy + Comments
	code: HH:MM:SS.ss      S.ss  S.ss
	
	S:    22:03:45

        D:    22:06:47.524 (+/- 0.01s)
        R:    22:06:49.544 (+/- 0.01s)    Duration 2.02s (+/- 0.02s)
                                          Mid time 22:06:48.534 (+/- 0.02s)

	E:    22:08:18     
	
5.TELESCOPE:
	Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: video/primary focus/FOV 18.3'x13.7' (768x576, 1.43"x1.43" per pixel)
	Mount: Equatorial
	Motor drive: Yes

6.TIMING & RECORDING:
	Timekeeping: GPS 1PPS Garmin 18x LVC + KIWI-OSD
        Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL
	Mode of recording: It=20ms (50 Img/s), Video CCIR, Y800, uncompressed AVI
	Device of recording: TIS DFG/USB2-lt Videograbber USB2.0 (Y800), Notebook Harddisk
        Time insertion: KIWI-OSD 

7.OBSERVING CONDITIONS:
	Atmospheric transparency: good
	Wind: No
	Star image stability: fair
	Minor planet visible: No
	Temperature: 278 Kelvin (+05 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star TYC 2416-00777-1, +9.6mag, 14deg Elevation.
    
        Only Clear glass filter (Astronomik) for CCD protection was used.

        Video evaluation accomplished with VirtualDub 1.9.7 and Tangra v1.0Beta8

        Because a WAT-120N was used the inserted times in video were corrected to real times using this page:
        http://www.dangl.at/ausruest/vid_tim/vid_tim1.htm
        Correction value was -40ms for all times.

        Predicted event time in Occult Watcher was 22:05:53 UTC for my observing position.
        Predicted maximum duration was 4.1 seconds with a 5.1mag drop.
        Position was 91km from predicted central line in E direction
        between center line and path edge with a probability of 67.0%.
        Occultation event detected with a duration of 2.02s(It=20ms).
        
        3-D Position and timing
	Garmin GPS18x LVC
        Receiving 08 satellites
        Horizontal Dilution of Precision 1.0
        Geoidal separation 44.5m (Altitude 547.4MSL + 44.5 = 591.9 m in WGS84 datum)

        Gerhard Dangl
	gerhard@dangl.at
	www.dangl.at/
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