+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1. DATE: January 3, 2019 STAR: UCAC4 418-150499 ASTEROID: (137) Meliboea 2. OBSERVER Name: Alberto OSSOLA Address: 6933 Muzzano (Switzerland) Email: aossola@bluewin.ch 3. OBSERVING STATION Nearest city: CH-6900 Lugano Longitude: 8d 55m 10.5s (E) Latitude: 45d 59m 50.6s (N) Altitude: 350m (From Google Earth) 4. TIMING OF EVENTS Occultation recorded: POSITIVE 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: AOTA Event Time (UTC) Accuracy + Comments code: HH:MM:SS.ss S.ss -S : 18:28:30 -D : 18:29:09.98 +/- 0.08 ss. -R : 18:29:12.70 +/- 0.08 ss. -E : 18:31:30 5.TELESCOPE: Type: Schmid Cassegrrain Aperture: 230 mm Focal lenght: ca. 700mm (focal reducer F:6.3 and f:5) Magnification: - Filters: no Mount: equatorial Motor drive: yes 6. TIMING & RECORDING Sensor/Camera: Videocamera 910HX/RC, CCIR, 1/2" EXWiew HAD CCD II Videocamera settings: Shutter mode=x8 , Gain=31. , Gamma=1.0 Device of recording: Personal computer Virtualdub software, saved on Harddisk Mode of recording: Integration time=0.16 s., CCIR, Time-inserter device: IOTA VTI 7. OBSERVING CONDITIONS Atmospheric transparency: good Wind: strong Star image stability: very poor Minor Planet Visible:no 8. ADDITIONAL COMMENTS