+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1.DATE: 2012/03/02 STAR: UCAC2 33550772 ASTEROID: (41) Daphne 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: Zwettl Latitude: N 48 33 36.4 (WGS84) Longitude: E 15 09 51.2 (WGS84) Altitude: 717m (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: 18:46:42 E: 18:50:17 5.TELESCOPE: Type: Newton Focal length: 1200mm Aperture: 254 mm Magnification: video/primary focus/FOV 18.3'x13.7' (768x576, 1.43"x1.43" per pixel) Mount: Equatorial Motor drive: Yes 6.TIMING & RECORDING: Timekeeping: GPS 1PPS, GlobalSat EM-406A GPS Board + IOTA-VTI (Demo3) V1.1.43 Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL Mode of recording: It=0.64s (1.5625 Img/s), Video CCIR, Y800, uncompressed AVI Device of recording: TIS DFG/USB2-lt Videograbber USB2.0 (Y800), Notebook Harddisk Time insertion: IOTA-VTI 7.OBSERVING CONDITIONS: Atmospheric transparency: bad Wind: 1-2m/s Star image stability: fair Minor planet visible: Yes, separated until some minutes before event time Temperature: 276 Kelvin (+03 deg Celsius) 8.ADDITIONAL COMMENTS: Target star UCAC2 33550772, +12.0mag, 46deg Elevation. Only Clear glass filter (Astronomik) for CCD protection was used. Video evaluation accomplished with VirtualDub 1.10.0, Tangra v1.4.0.435 Event data details according to the predictions from Steve Preston. Predicted event time was 18:48:50 UTC (+/- 20.6s) for my observing position. Predicted maximum duration was 24.7 seconds with a 0.6mag drop. Position was 469km from predicted central line in WSW direction between 2-sigma and 3-sigma limit with a probability of 1.8%. Due to a hazy sky a longer integration time had to be used. No occultation event detected (It=0.64s). 3-D Position and timing Garmin GPS18x LVC Receiving 10 satellites Horizontal Dilution of Precision 0.9 Geoidal separation 44.6m (Altitude 672.2MSL + 44.6 = 716.8 m in WGS84 datum) Gerhard Dangl gerhard@dangl.at www.dangl.at/ +--------------------------------------------------------------------+