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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: 2008/09/04
  STAR: TYC 1853-00796-1
  ASTEROID: (465) Alekto

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:  598m         (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:    23:39:08

	E:    23:44:02         
	
5.TELESCOPE:
	Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: video/primary focus/FOV 15.8'x13.7' (640x576, 1.48"x1.43" per pixel)
	Mount: Equatorial
	Motor drive: Yes

6.TIMING & RECORDING:
	Timekeeping: GPS 1PPS Garmin 18 LVC + KIWI-OSD
        Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL, 768x576
	Mode of recording: It=160ms (6.25 Img/s), Video CCIR, AVI, YUY2, Huffyuv,
	Device of recording: Xpert V-Stream Videograbber USB2.0, Notebook Harddisk
        Time insertion: KIWI-OSD 

7.OBSERVING CONDITIONS:
	Atmospheric transparency: fair
	Wind: No
	Star image stability: fair
	Minor planet visible: No
	Temperature: 285 Kelvin (+12 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star TYC 1853-00796-1, +11.6mag, 25deg Elevation.
        Faintest object visible on live video fields was target star.

        Only Clear glass filter (Astronomik) for CCD protection was used.

        Video evaluation with VirtualDub1.7.8 and Limovie0.9.28c
        No occultation detected (It=160ms)

        3-D Position and timing
	Garmin GPS18 LVC
        Receiving 06 satellites
        Horizontal Dilution of Precision 1.9
        Geoidal separation 44.4m (Altitude 553.4MSL + 44.4 = 597.8m in WGS84 datum)

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