+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1.DATE: 2008/10/05 STAR: HIP 5925 ASTEROID: (1181) Lilith 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: 593m (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: 20:21:55 E: 20:26:11 5.TELESCOPE: Type: Newton Focal length: 1200mm Aperture: 254 mm Magnification: video/primary focus/FOV 15.8'x13.7' (640x576, 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, 768x576 Mode of recording: It=20ms (50 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: bad Wind: No Star image stability: fair Minor planet visible: Yes, see comments Temperature: 281 Kelvin (+08 deg Celsius) 8.ADDITIONAL COMMENTS: Target star HIP 5925, +8.2mag, 44deg Elevation. Faintest object visible on live video fields (It=20ms) was star TYC 1200 1020, +9.6mag. Until about 14 minutes before predicted time I could record Lilith with It=1.28s and 2.56s. After this time Lilith came too close to the target star and was outshined by the big bright star disk. Only Clear glass filter (Astronomik) for CCD protection was used. Video evaluation accomblished with VirtualDub1.8.5 and Limovie0.9.28c Due to some moving clouds the It had to be increased twice for few seconds to 80ms. No occultation detected (It=20ms, few seconds It=80ms) 3-D Position and timing Garmin GPS18 LVC Receiving 07 satellites Horizontal Dilution of Precision 1.1 Geoidal separation 44.4m (Altitude 548.4MSL + 44.4 = 592.8m in WGS84 datum) Gerhard Dangl gerhard@dangl.at www.dangl.at/ +--------------------------------------------------------------------+