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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: 2006/09/22
  STAR: UCAC2 41685659
  ASTEROID: (519) Sylvania

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 13.4 (WGS84)
	Longitude: E 15 14 08.2 (WGS84)
	Altitude: 551m (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:    00:55:59

        D:    00:58:20.256           0.01     (D:time +/-80ms)
        R:    00:58:21.536           0.01     (R:time +/-80ms)
                                               Duration 1.28s (+/- 160ms)
	E:    01:01:11   
	
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: It=160ms (6,25 Img/s), 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: good
	Wind: No 
	Star image stability: good
	Minor planet visible: Yes (see additional comments)
	Temperature: 283 Kelvin (+10 deg Celsius)
	
8.ADDITIONAL COMMENTS:
	Video evaluation accomblished with VirtualDub1.6.16 and Limovie0.9.24
        Due to integration time = 160ms video output signal gets timestamp
        at event time + 160ms (4 equal frames are transfered every 160ms)

        Only Clear glass filter (Astronomik) for CCD protection was used

        Target star UCAC2 41685659, +11.2mag, 39deg Elevation
        Limit on Video "live"-frames (integration time = 160 ms)
        GSC 1889 198 +12.3 mag

        Sylvania (519) +14.3mag was clear visible separated from target
        with It=2.56s (64x frames) until 00:50 UT and after positive
        occultation separated again from around 01:08 UT

        3-D Position and timing
	Garmin GPS18 LVC
        Receiving 05 satellites
        Horizontal Dilution of Precision 1.7
        Geoidal separation 44.4m

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