+--------------------------------+ +--------------------------------+

                 ASTERIODAL OCCULTATION - REPORT FORM

+--------------------------------+ +--------------------------------+

           	           EAON & IOTA-ES

               EUROPEAN ASTEROIDAL OCCULTATION NETWORK

    INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

+--------------------------------+ +--------------------------------+

1.DATE: 2007/09/24
  STAR: TYC 5611-00652-1
  ASTEROID: (489) Comacina

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 33.8 (WGS84)
	Longitude: E 15 13 57.3 (WGS84)
	Altitude:  606m         (WGS84)
	Single/Multiple: Single

+--------------------------------------------------------------------+

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:    19:31:56    
                          
        E:    19:37:08    
	
5.TELESCOPE:
	Type: Newton
	Focal length: 1200mm
 	Aperture: 254 mm
	Magnification: video/primary focus/FOV 15.8'x13.7'/1.48"x1.43" 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=1.28s (0.78125 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: fair
	Wind: 0-0.5m/s
	Star image stability: bad
	Minor planet visible: No
	Temperature: 282 Kelvin (+09 deg Celsius)
	
8.ADDITIONAL COMMENTS:
        Video evaluation accomblished with VirtualDub1.6.16 and Limovie0926gT4
        Integrating mode 32x=1280ms was necessary to hold the faint star in low
        elevation on a always visible level. No occultation detected (It=1.28s)
        
        Only Clear glass filter (Astronomik) for CCD protection was used

        Target star TYC 5611-00652-1 at 05deg Elevation was reported as +11.9mag but
        video record shows the star seems to be much fainter in the range up to +13mag.
        Limit on recorded video fields without editing was target star.

        3-D Position and timing
	Garmin GPS18 LVC
        Receiving 08 satellites
        Horizontal Dilution of Precision 1.3
        Geoidal separation 44.4m (Altitude 561.2MSL + 44.4 = 605.6m in WGS84 datum)

        Gerhard Dangl
	gerhard@dangl.at
	www.dangl.at
+--------------------------------------------------------------------+