+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1.DATE: 2008/08/25 STAR: 2UCAC 26798093 ASTEROID: Nereid (Neptune II) 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 29.5 (WGS84) Longitude: E 15 13 59.4 (WGS84) Altitude: 602m (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: 22:17:48 Is: 22:32:23 Ie: 22:33:12 Decision for longer recording E: 23:01:06 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=1.28s (0.78125 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: fair Wind: 0 - 0.5m/s Star image stability: fair Minor planet visible: No Temperature: 285 Kelvin (+12 deg Celsius) 8.ADDITIONAL COMMENTS: Target star 2UCAC 26798093, +13.6mag, 26deg Elevation. Faintest object visible on live video fields was 2UCAC 26798071, +13.7mag. Due to some passing clouds several times for few seconds an integration time of 2.56s was used. In this way the target star was never lost in record. No filter was used. After the planned first recording around 22:25 UT I saw that the weather would be clear for some more minutes. So I decided to start recording again until 23:01 UT. Video evaluation accomblished with VirtualDub1.7.8 and Limovie0.9.28c No occultation detected (It=1.28s) 3-D Position and timing Garmin GPS18 LVC Receiving 11 satellites Horizontal Dilution of Precision 0.8 Geoidal separation 44.4m (Altitude 557.4MSL + 44.4 = 601.8m in WGS84 datum) Gerhard Dangl gerhard@dangl.at www.dangl.at/ +--------------------------------------------------------------------+