+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1. DATE: 2010 Nov 05 STAR: TYC 0637-00667-1 ASTEROID: (769) Tatjana 2. OBSERVER Name: Stefano SPOSETTI Address: 6525 GNOSCA - Switzerland Email: stefanosposetti@ticino.com 3. OBSERVING STATION Nearest city: CH-6500 Bellinzona Longitude: 46deg 13min 53.2sec (N) Latitude: 9deg 1min 26.5sec (E) Altitude: 260m 4. TIMING OF EVENTS Occultation recorded: NEGATIVE Type of event: "S"tart observation; "I"nterrupt-start; "D"isappearance; "B"link; "F"lash; "E"nd observation; "I"nterrupt-end; "R"eappearance; "O"ther (specify) Personal Equation Substracted: No Event Time (UTC) Accuracy + Comments code: HH:MM:SS.ss S.ss -S : 23:51:57 -D : -R : -E : 00:00:35 5. TELESCOPE Type: Schmidt-Cassegrain, Celestron 8-inch Aperture: 200mm Focal length: 800mm (with focal reducer) Magnification: FOV 30x20arcmin Mount: Equatorial Motor drive: Yes 6. TIMING & RECORDING Timekeeping: KIWI-OSD with GPS Garmin 18 LVC Sensor/Camera: Videocamera WAT-120N+, CCIR, 1/2" Sony CCD-Sensor ICX419ALL Videocamera settings: Shutter mode=3, Gain=HI , Gamma=LO Device of recording: Personal computer, TV-AV PCI-TV7130, S-video input, Virtualdub software, saved on Harddisk Mode of recording: Integration time=0.160s (6.25 Img/s), CCIR, Huffyuv Time insertion: KIWI-OSD 7. OBSERVING CONDITIONS Atmospheric transparency: good Wind: none Star image stability: good Minor Planet Visible: no 8. ADDITIONAL COMMENTS Tangra software was used to analyze the AVI files. An additional 40cm f/4 telescope with CCD in scan mode with 0.01s/line integration was also used. Stars show 5arcsec FWHM. No occultation was recorded.