+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1.DATE: 2019/01/29 STAR: UCAC4 468-041872 ASTEROID: (1585) Union 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 an der Thaya Latitude: N 48 47 13.5 (WGS84) Longitude: E 15 14 08.1 (WGS84) Altitude: 596m (WGS84) 551m (MSL) 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: 21:24:57 E: 21:28:01 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, EQ8 Motor drive: Yes 6.TIMING & RECORDING: Timekeeping: GPS Sensor Garmin GPS18xLVC Sensor/Camera: WAT-910BD System TACOS, CCIR, 1/2" CCD-Sensor Mode of recording: It=80ms (12.5 Img/s), Interlaced Video CCIR, Y800, uncompressed AVI Device of recording: TIS DFG/USB2-lt Videograbber USB2.0 (Y800), Notebook with SSD and OS W7/64P Time insertion: GPS time with VTI KIWI-OSD 7.OBSERVING CONDITIONS: Atmospheric transparency: fair Wind: no Star image stability: fair Minor planet visible: yes Temperature: 265 Kelvin (-08 deg Celsius) 8.ADDITIONAL COMMENTS: Target star UCAC4 468-041872, +13.3mag, 38deg Elevation. Only Clear glass filter (Astronomik) for CCD protection was used. Video evaluation accomplished with VirtualDub 1.10.0 and Tangra 3.6.18 Event data details according to the predictions from Occult Watcher Feed UKOCL. Predicted event time was 21:26:00 UTC (+/- 3s) for my observing position. Predicted maximum duration was 3.5 seconds with a 1.2mag drop. Position was 75km from predicted central line in SW direction between path edge and 1-sigma line with a probability of 15.2%. No occultation event detected (It=0.08s). 3-D Position and timing Garmin GPS18x LVC (Update of Almanac data before recording start) Receiving 09 satellites Horizontal Dilution of Precision 0.8 Geoidal separation 44.5m (Altitude 551.1MSL + 44.5 = 595.6 m in WGS84 datum) Gerhard Dangl gerhard@dangl.at www.dangl.at/ +--------------------------------------------------------------------+