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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: 2007/07/13
  STAR: TYC 0564-00169-1
  ASTEROID: (654) Zelinda

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 08.4 (WGS84)
	Altitude:  592m         (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:    00:11:02

        D:    00:13:25.94      0.00  0.01    (D:time +/-20ms)
        R:    00:13:34.10      0.00  0.01    (R:time +/-20ms)   
                                              Duration 8.16s (+/-40ms)
	E:    00:16:06         
	
5.TELESCOPE:
	Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: video/primary focus/FOV 18.5'x13.8'/1.5" per pixel
	Mount: Equatorial
	Motor drive: Yes

6.TIMING & RECORDING:
	Timekeeping: GPS 1PPS Garmin 18 LVC + KIWI-OSD
        Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL
	Mode of recording: It=80ms (12.5 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 (with It=1.28s)
	Temperature: 281 Kelvin (+8 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Video evaluation accomblished with VirtualDub1.6.16, Limovie0.9.25f_beta
        and Iris5.51 (aperture photometry)

        Inserted video times of events corrected by -100ms      (WAT-120N Mode 2x)
        Correction value from table at: www.dangl.at/ausruest/vid_tim/vid_tim1.htm

        D and R times determined more exactly within the 80ms exposure windows with
        Iris using 3 circle aperture photometry (radius 6, 10, 20), (pos x405, y288)
	D event 36ms (at 45.5%) after 80ms exposure window start
        R event 35ms (at 43.8%) after 80ms exposure window start
        
        Only Clear glass filter (Astronomik) for CCD protection was used

        Asteroid Zelinda, +13.2mag, was visible before and after event with It= 1.28s

        Target star TYC 0564-00169-1, +11.3mag, 43deg Elevation
        Limit on recorded video fields without editing was TYC 564-00907, +11.6mag

        3-D Position and timing
	Garmin GPS18 LVC
        Receiving 09 satellites
        Horizontal Dilution of Precision 1.0
        Geoidal separation 44.4m (Altitude 547.1MSL + 44.4 = 591.5m in WGS84 datum)

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