+--------------------------------+ +--------------------------------+ ASTERIODAL OCCULTATION - REPORT FORM +--------------------------------+ +--------------------------------+ EAON & IOTA-ES EUROPEAN ASTEROIDAL OCCULTATION NETWORK INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION +--------------------------------+ +--------------------------------+ 1. DATE: 30 Dec 2016 STAR: 2UCAC 27466644 ASTEROID: (754) Malabar 2. OBSERVER Name: Stefano SPOSETTI Address: 6525 GNOSCA - Switzerland Email: stefanosposetti@ticino.com 3. OBSERVING STATION Nearest city: CH-6600 Locarno Longitude: 8 d 47.2554 m (E) Latitude: 46 d 10.3364 m (N) Altitude: 368 m (WGS84) 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: No Event Time (UTC) Accuracy + Comments code: HH:MM:SS.ss S.sss -S : 05:05:10 -D : 05:09:12.41 ± 0.32 s -R : 05:09:22.49 ± 0.16 s -E : 05:12:30 Duration: 10.08 s ± 0.48 s TELESCOPE -Type: Schmidt-Cassegrain, Celestron 8-inch -Aperture: 200 mm -Focal length: about 800 mm (with f/3.3 focal reducer) -FOV: about arcmin -Mount: Equatorial -Motor drive: Yes 6. TIMING & RECORDING Sensor/Camera: Videocamera WAT-910HX, CCIR, 1/2", ICX429ALL sensor Videocamera settings: Shutter = x16; Gain = 35/41; Gamma = 1.00 Device of recording: Personal computer, Imaging Source DFG/USB2-lt, Composite input, Virtualdub software, AVI file uncompressed Time insertion device: KIWI-OSD with GPS Garmin 18 LVC Integration time: 0.320 s 7. OBSERVING CONDITIONS Atmospheric transparency: fair Wind: no Star image stability: fair Minor Planet Visible: - 8. ADDITIONAL COMMENTS -Target position at: azimut = 240 deg; elevation = 11 deg -Moonlight: none Accordingly to Occultwatcher prediction (IOTA feed): -Rank: 100 -Probability: 94 % -Combined magnitude: 12.0 mag -Asteroid magnitude: 13.8 mag -Lightdrop: 1.7 - 2.1 mag -Max duration: 9.8 s -Event time: 06:09:19 UT -Error in time: 5 s -Tangra v. 3.6 was used to generate the lightcurve (aperture photometry, average background). -A correction of - 0.330 s was applied because of the use of an integration camera. -Measured lightdrop: 1.8 mag. -A lightcurve can be seen here: http://sposetti.ch/wp-content/uploads/2014/09/2016DEC30_Malabar.png