+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1.DATE: 2010/09/27 STAR: TYC 0025-00630-1 ASTEROID: (136) Austria 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 13.5 (WGS84) Longitude: E 15 14 08.3 (WGS84) Altitude: 589m (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: 22:04:59 I-s: 22:05:29 I-e: 22:05:39 I-s: 22:05:48 I-e: 22:06:11 E: 22:07:42 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 Garmin 18x 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, Y800, uncompressed AVI Device of recording: TIS DFG/USB2-lt Videograbber USB2.0 (Y800), Notebook Harddisk Time insertion: KIWI-OSD 7.OBSERVING CONDITIONS: Atmospheric transparency: bad (moving clouds) Wind: 0 - 1m/s Star image stability: fair Minor planet visible: No Temperature: 283 Kelvin (+10 deg Celsius) 8.ADDITIONAL COMMENTS: Due to bad transparency with moving clouds a long integration time of 1.28s was needed. Target star TYC 0025-00630-1, +09.7mag, 42deg Elevation. Only Clear glass filter (Astronomik) for CCD protection was used. Video evaluation accomplished with VirtualDub 1.9.7. Predicted event time was 22:06:10 UTC for my observing position. Predicted maximum duration was 3.0 seconds with a 2.5mag drop. Position was 138km from predicted central line in NW direction outside 3-sigma line with a probability of nearly zero. No occultation event detected (It=1.28s). 3-D Position and timing Garmin GPS18x LVC Receiving 08 satellites Horizontal Dilution of Precision 1.1 Geoidal separation 44.5m (Altitude 544.4MSL + 44.5 = 588.9 m in WGS84 datum) Gerhard Dangl gerhard@dangl.at www.dangl.at/ +--------------------------------------------------------------------+