+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1. DATE: 16 Oct 2017 STAR: 4UC 535-034621 ASTEROID: (28894) Ryanchung 2. OBSERVER Name: Stefano SPOSETTI Address: 6525 GNOSCA - Switzerland Email: stefanosposetti@ticino.com 3. OBSERVING STATION Nearest city: CH-6525 Gnosca Longitude: 9d 1m 26.5s (E) Latitude: 46d 13m 53.2s (N) Altitude: 260m (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 : 02:58:30 -E : 03:06:30 5. TELESCOPE -Type: Newton -Aperture: 420 mm -Focal length: 1640 mm -FOV: 14 x 12 arcmin -Mount: Equatorial -Motor drive: Yes 6. TIMING & RECORDING Sensor/Camera: Videocamera WAT-910HX, CCIR, 1/2", ICX429ALL sensor Videocamera settings: Shutter = x4 ; Gain = 41/41; Gamma = 1.00 Device of recording: Personal computer, Hauppauge HVR-1700 (PCIcard), S-video input, Virtualdub acquiring software saving the data as an uncompressed AVI on Harddisk Integration time = 0.080 s Time insertion device: IOTA-VTI, v.1.1.42 7. OBSERVING CONDITIONS Atmospheric transparency: good Wind: none Star image stability: good Minor Planet Visible: - 8. ADDITIONAL COMMENTS -