+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1.DATE: 2011/04/03 STAR: TYC 6133-01012-1 ASTEROID: (134) Sophrosyne 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 13.6 (WGS84) Longitude: E 15 14 08.5 (WGS84) Altitude: 592m (WGS84) Single/Multiple: Single +--------------------------------------------------------------------+ 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: 21:45:50 D: 21:47:15.427 (+/- 0.08s) R: 21:47:18.807 (+/- 0.08s) Duration 3.38s (+/- 0.16s) Mid time 21:47:17.117 (+/- 0.16s) E: 21:48:37 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=160ms (6.25 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 Wind: no Star image stability: fair Minor planet visible: No Temperature: 283 Kelvin (+10 deg Celsius) 8.ADDITIONAL COMMENTS: Target star TYC 6133-01012-1, +10.8mag, 15deg Elevation. Only Clear glass filter (Astronomik) for CCD protection was used. Video evaluation accomplished with VirtualDub 1.9.7 and Tangra v1.2.0.373 Because of the use of a WAT-120N in integration mode frame4 (It=160ms) a correction of -110ms was made to the video inserted times according to the correction value table on: http://www.dangl.at/ausruest/vid_tim/vid_tim1.htm#wat_120n Predicted event time was 21:47:14 UTC for my observing position. Predicted maximum duration was 9.9 seconds with a 2.0mag drop. Position was 323km from predicted central line in NO direction between 2-sigma and 3-sigma line with a probability of 1.5%. Occultation event with a duration of 3.38s detected (It=160ms). 3-D Position and timing Garmin GPS18x LVC Receiving 09 satellites Horizontal Dilution of Precision 0.9 Geoidal separation 44.5m (Altitude 547.2MSL + 44.5 = 591.7 m in WGS84 datum) Gerhard Dangl gerhard@dangl.at www.dangl.at/ +--------------------------------------------------------------------+