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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: 2014/03/08
  STAR: 2UCAC 40653410
  ASTEROID: (1258) Sicilia

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: 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:    20:44:50

	D:    20:46:15.300 (+/- 0.09s)
        R:    20:46:18.980 (+/- 0.09s)    Duration       03.680 (+/- 0.18s)  
                                          Mid time 20:46:17.140 (+/- 0.18s)

	E:    20:47:04   
	
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 Sensor Garmin GPS18xLVC
        Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL
	Mode of recording: It=160ms (6.25 Img/s), Video CCIR, Y800, uncompressed AVI
	Device of recording: TIS DFG/USB2-lt Videograbber USB2.0 (Y800), Notebook Harddisk
        Time insertion: KIWI-OSD VTI

7.OBSERVING CONDITIONS:
	Atmospheric transparency: fair
	Wind: no
	Star image stability: fair
	Minor planet visible: No
	Temperature: 277 Kelvin (+04 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star 2UCAC 40653410, +12.2mag, 49deg Elevation.
        Only Clear glass filter (Astronomik) for CCD protection was used.

        Video evaluation accomplished with VirtualDub 1.10.0, Tangra v1.4.0.499

        Because of the use of a WAT-120N CCIR in integration mode Frame4 (It=160ms),
        a correction of -110ms was performed at the times inserted in the video by the VTI
        The correction value is according to measurements results with EXposure Time Analyzer - EXTA.
        http://www.dangl.at/exta/exta_e.htm
        So all event times in this report are corrected times representing the real event times.

        Event data details according to the predictions from Steve Preston, IOTA.
        Predicted event time was 20:46:20 UTC (+/- 12s) for my observing position.
        Predicted maximum duration was 5.4 seconds with a 4.1mag drop.
        Position was -66km from predicted central line in NE direction
        between path edge and 1-sigma line with a probability of 19.2%.
        Occultation event detected with duration 3.68s +/-0.18s (It=0.16s).
        
        3-D Position and timing
	Garmin GPS18x LVC
        Receiving 08 satellites
        Horizontal Dilution of Precision 0.9
        Geoidal separation 44.5m (Altitude 553.6MSL + 44.5 = 598.1 m in WGS84 datum)

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