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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: 2014/02/20
  STAR: TYC 1391-00288-1
  ASTEROID: (6656) Yokota

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 13.4 (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:    18:44:47

	E:    18:47:18   
	
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, GlobalSat EM-406A GPS Board + IOTA-VTI (Demo3) V1.1.43
        Sensor/Camera: WAT-902H2 Ultimate, CCIR, 1/2" Sony CCD-Sensor ICX429ALL
	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: IOTA-VTI

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 1391-00288-1, +10.7mag, 48deg Elevation.
        Only Clear glass filter (Astronomik) for CCD protection was used.

        Video evaluation accomplished with VirtualDub 1.10.0, Tangra v1.4.0.499

        Event data details according to the predictions from feed IBEROC.
        Predicted event time was 18:45:50 UTC (+/- 12s) for my observing position.
        Predicted maximum duration was 2.4 seconds with a 5.7mag drop.
        Position was on predicted central line with a probability of 8.0%.
        No occultation event detected (It=20ms).
        
        3-D Position and timing
	GlobalSat EM-406A GPS Board
        Receiving 06 satellites
        Horizontal Dilution of Precision 1.8
        Geoidal separation 44.6m (Altitude 553.4MSL + 44.6 = 598.0 m in WGS84 datum)

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