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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: 2006/06/07
  STAR: TYC 6244-00688-1
  ASTEROID: (1618) Dawn

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 34.6 (WGS84)
	Longitude: E 15 13 56.7 (WGS84)
	Altitude: 560m (MSL)
	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:   23:55:22   

	E:   23:59:04   
	
5.TELESCOPE:
	Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: video/primary focus/recorded field 1112" x 830"
	Mount: Equatorial
	Motor drive: Yes

6.TIMING & RECORDING:
	Timekeeping: GPS 1PPS Garmin18 LVC + KIWI-OSD
        Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL
	Mode of recording: integration time=40ms, 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: hazy but fair
	Wind: No 
	Star image stability: good
	Minor planet visible: No (integration time 40 ms)
	Temperature: 276 Kelvin (+03 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Target star TYC 6244-00688-1, +09.4mag, 19.5deg Elevation

        No filter or clear glass filter was used

        Limit on Video "live"-frames (integration time = 40 ms)
        GSC6244 592 +11.5 mag
        
        No occultation lasting all of one integrated frame=40ms 
        
        3-D Position and timing
	Garmin GPS18 LVC
        Receiving 10 satellites
        Horizontal Dilution of Precision 0.8
        Geoidal separation 44.4m

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