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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: 2010/03/02
  STAR: 3UC205-110595
  ASTEROID: (616) Elly

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 13.4 (WGS84)
	Longitude: E 15 14 08.2 (WGS84)
	Altitude:  592m         (WGS84)
	Single/Multiple: Single

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4.TIMING OF EVENTS:
	Occultation recorded: NEGATIVE
	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:    21:22:56

	E:    21:28:05     
	
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=40ms (25 Img/s) to 320ms (3.125 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: bad, clouds moving
	Wind: No
	Star image stability: fair
	Minor planet visible: No
	Temperature: 273 Kelvin (+0 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star 3UC205-110595, +12.0mag, 46deg Elevation.
        Faintest object visible on live video fields was target star.

        Due to moving clouds the integration time had to be changed
        several times between 40ms and 320ms. In this way the star
        was never lost in the video frames.
    
        Only Clear glass filter (Astronomik) for CCD protection was used.
        
        Video evaluation accomplished with VirtualDub1.9.7, AviSynth2.5 and Limovie0.9.29b.

        Predicted event time was 21:25:24 UTC for my observing position.
        Predicted maximum duration was 1.5 seconds with 2.0mag drop.
        Position was 345km from central line in SW azimut direction
        between 1-sigma and 2-sigma line with a probability of 1.4%.
        No occultation detected (It=40ms to 320ms).
        
        3-D Position and timing
	Garmin GPS18x LVC
        Receiving 08 satellites
        Horizontal Dilution of Precision 1.1
        Geoidal separation 44.5m (Altitude 547.5MSL + 44.5 = 592.0 m in WGS84 datum)

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