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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: 2016/09/01
  STAR: HIP 5594
  ASTEROID: (4149) Harrison

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 an der Thaya
	Latitude:  N 48 47 13.5 (WGS84)
	Longitude: E 15 14 08.2 (WGS84)
	Altitude:  593m         (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:    22:15:50

	E:    22:18:45
	
5.TELESCOPE:
	Type: WO Doublet APO Megrez 72
	Focal length: 432mm
 	Aperture: 72 mm
	Magnification: video/primary focus/FOV 50.9'x38.2' (768x576, 3.98"x3.98" per pixel)
	Mount: Equatorial, EQ8
	Motor drive: Yes

6.TIMING & RECORDING:
	Timekeeping: GPS Sensor Garmin GPS18xLVC
        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 with SSD and OS W7/64P
        Time insertion: KIWI-OSD VTI

7.OBSERVING CONDITIONS:
	Atmospheric transparency: fair
	Wind: no
	Star image stability: fair
	Minor planet visible: no
	Temperature: 286 Kelvin (+13 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star HIP 5594, +5.9mag, 24deg Elevation.
        Only Clear glass filter (Astronomik) for CCD protection was used.

        Video evaluation accomplished with VirtualDub 1.10.0 and Tangra 3.5.9

        Event data details according to the predictions from Occult Watcher Feed IOTA (Steve Preston).
        Predicted event time was 22:17:14 UTC (+/- 9s) for my observing position.
        Predicted maximum duration was 1.9 seconds with a 10.9mag drop.
        Position was 27km from predicted central line in ENE direction
        between path edge and 1-sigma line with a probability of 11.1%.
        No occultation event detected (It=0.02s).
        
        3-D Position and timing
	Garmin GPS18x LVC
        Receiving 08 satellites
        Horizontal Dilution of Precision 0.9
        Geoidal separation 44.5m (Altitude 548.0MSL + 44.5 = 592.5 m in WGS84 datum)

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