+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1. DATE: 15 Aug 2018 STAR: UCAC4 623-13116 ASTEROID: (602) Marianna 2. OBSERVER Name: Stefano SPOSETTI Address: 6525 GNOSCA - Switzerland Email: stefanosposetti@ticino.com 3. OBSERVING STATION Nearest city: CH-Bellinzona Station: LiBe Longitude (DD MM SS.s): 09 00 51.0 E Latitude (DD MM SS.s): 46 11 50.0 N Altitude: 240m (WGS84) 4. TIMING OF EVENTS Occultation recorded: NEGATIVE Type of event: "S"tart observation; "E"nd observation; Personal Equation Substracted: - Event Time (UTC) Accuracy + Comments code: HH:MM:SS.ss S.sss -S : 22:39:51 -E : 22:41:50 5. TELESCOPE -Type: Schmidt-Cassegrain, Celestron 8-inch -Aperture: 200 mm -Focal length: about 700 mm (with 2 focal reducers) -Magnification: - -Mount: Equatorial -Motor drive: No 6. TIMING & RECORDING -Camera/Sensor: Videocamera WAT-910HX-RC, CCIR, 1/2" -Videocamera settings: Shutter = x32, Gain = 41/41, Gamma = 1.00, other settings = OFF or NULL -Device of recording: personal computer -Videograbber: Logilink USB Grabber VG0001, composite input -Software: Virtualdub v. 1.10, saved on Harddisk as Huffyuv compressed file -Timekeeping: GPS 1PPS (US Global Sat EM-406A) -Time insertion device: IOTA-VTI v. 1.1.42 -Integration time: 0.640 s 7. OBSERVING CONDITIONS -Atmospheric transparency: good/fair -Wind: - -Star image stability: good -Minor Planet Visible: - 8. ADDITIONAL COMMENTS -