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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: 2016/07/19
  STAR: UCAC4 345-180315
  ASTEROID: (134340) Pluto

2.OBSERVER:
  	Name: Gerhard Dangl
	Phone: ++43-(0)2842-53908
	Address: AUSTRIA, A-3830, Nonndorf 12
	E-mail: gerhard@dangl.at

3.OBSERVING STATION:
        MPC station Nonndorf - C47
	Nearest city: Waidhofen an der Thaya
	Latitude:  N 48 47 13.6 (WGS84)
	Longitude: E 15 14 08.2 (WGS84)
	Altitude:  547m         (MSL)
	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:    20:43:04

	D:    20:52:06.5  +/-4.0s
        R:    20:53:35.9  +/-4.0s    Duration       89.4s +/-8.0s
                                     Mid time 20:52:51.2  +/-4.0s

	E:    21:03:40   
	
5.TELESCOPE:
	Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: CCD @263K/primary focus/FOV 25.7'x19.2' (1391 x 1039, 1.11"x1.11" per pixel)
	Mount: Equatorial, EQ8
	Motor drive: Yes

6.TIMING & RECORDING:
	Timekeeping: Notebook clock synchronized via cabel Internet and Dimension 4
        Sensor/Camera: Atik 314L+ B/W, CCD, 2/3" Sony CCD-Sensor ICX285AL
	Mode of recording: It=5s + 1.9s download (0.145 Img/s), FITS, 16-bit, bin 1x1, 
	Device of recording: Notebook USB3.0 with SSD and OS W7/64P
        Time insertion: FITS header, time stamp within 50ms of UTC

7.OBSERVING CONDITIONS:
	Atmospheric transparency: bad (moving clouds)
	Wind: no
	Star image stability: fair
	Minor planet visible: yes, but not separated
	Temperature: 287 Kelvin (+14 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star UCAC4 345-180315, +14.2mag, 17deg Elevation.
        Baader Multi Purpose Coma Corrector MPCC for Newtons was used.

        Because of moving clouds many data points of the recording are unuseable. And many other data
        points are affected so that the beginn and end of the light curve is always steep and between
        only two data points.

        Evaluation accomplished with Astrometrica 4.9.3.423 and Tangra 3.5.9

        Event data details according to the predictions from RIO-TNO team.
        Predicted event time was 20:52:35 UTC (+/- 25s) for my observing position.
        Predicted maximum duration was 104.1 seconds with a 1.1mag drop.
        Position was 1702km from predicted central line in NNW direction
        between center line and path edge with a probability of 60.9%.
        Occultation event detected with duration 89.4s +/-8.0s (It=5.0s).
        
        Gerhard Dangl
        gerhard@dangl.at
        www.dangl.at/
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