ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE: 2020 November 14 STAR: UCAC4 542-001187 ASTEROID: 2000 AR184 2 OBSERVER: Name: Gérard VAUDESCAL Abbr:VDC E-mail: gg.vaudescal@free.fr Address: 65380 Azereix - France 3 OBSERVING STATION: Nearest city: AZEREIX(65380) Station: Observatoire d'Azereix Latitude: N 43 12 36.0 (WGS84) Longitude: W 00 00 46.5 (WGS84) Altitude: 340 m Single, OR Double or Multiple station (Specify observer's name): Single +----------------------------------+ 4 TIMING OF EVENTS: | | | OCCULTATION RECORDED: POSITIVE | | | +----------------------------------+ Type of event Start observation Interrupt-start Disappearance Blink Flash End observation Jnterrupt-end Reappearance Other (specify) Event Time (UT) Acc. Comments Code HH MM SS.ss S.ss S - 19:20:46.96 on frame n°7 D - 19:22:03.61 +/- 0,18 R - 19:22:06.23 +/- 0,17 E - 19:23:14.66 on frame n°429 Duration : sec 2.62" +/-0,24 Mid-event: 19:22:04.92 UT (Pédicted 19:22:02 +/- 9.7sec UT) Was your reaction time applied to the above timings? NO 5 TELESCOPE: Type: NEWTON - Aperture: 254 mm - Magnification: Focus 2000 mm x0.67 (reducer) F/D=5.27 Mount: Equatorial Motor drive: YES 6 TIMING & RECORDING: Time source: GPS 1 PPS Sensor: CAMERA ASI178MM - Binning x2 - Exposition :0,35sec/f) = 2.86 fps Gamma na - Gain 510/510 Recording: Genika 8bits - format ADV - Time insertion: module GPS_DCD_Time (Genika)-Synchronisation times UTC/frames with module File_Convert(Génika) Event insertion (specify): PC-Windows10 7 OBSERVING CONDITIONS: Clear SKY Wind: 0 ms Temperature: 10 °C Cloud : 50% Star image stability: seeing 1.7arcsec Minor planet visible: No 8 ADDITIONAL COMMENTS: Reduction under TANGRA 3.7.3 Rev 20200512 Predicted Max Duration: 2.8 sec Predicted Magnitude Drop: 5.9 mag No corrections applied / the test results show a variation of +/- 10ms whatever the exposure times between 20 and 700ms