ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +------------------------------+ 1 DATE (YYYY/MM/DD): 2013/02/28 STAR: TYC 6815-00206-1 ASTEROID: Laurentia N°: 162 2 OBSERVER: Name: Peter DELINCAK E-mail: pdlink@astronomy.sk Address: SLOVAKIA, Hviezdoslavova 1971, 022 01 Cadca Phone: +421 915 710 121 Web: www.astronomy.sk 3 OBSERVING STATION: Nearest city: Cadca Station: PDlink Observatory Longitude (DD MM SS.s): E 18 42 09.47 (WGS84) Latitude (DD MM SS.s): N 49 24 15.20 (WGS84) Altitude (m): 680.231m (WGS84) Single|Multiple station: Single +----------------------------+ 4 TIMING OF EVENTS: | | | EVENT REPORTED: POSITIVE | | | +----------------------------+ Event code S: observation Start I: Interruption start D: Disappearance J: Interruption end R: Reappearance B: Blink F: Flash E: observation End O: Other (specify) Personal Equation Substracted: No Comments Event Time (UT) P.E. Acc. Code HH:MM:SS.ss S.ss S.ss S - 03:06:54.5 1s : - - - : D - 03:07:14.9 1s : R - 03:07:18.8 1s : - - - : E - 03:08:43.4 1s : Duration : 3.9s Mid-event : 03:07:16.8 5 TELESCOPE: Type: Mirror optics Aperture: 355mm Magnification: prime focus (f/4.2) Mount: EQUATORIAL Motor drive: YES 6 TIMING & RECORDING: Time source: DCF 77 reciever => RAD++ Sensor: QHY5 Recording: It=1000ms (1 Img/s) 7 OBSERVING CONDITIONS: Atmospheric transparency: MIST ILLUMINATED BY MOON LIGHT Wind: SMALL Temperature: -4C Star image stability: NORMAL Minor planet visible: NO 8 ADDITIONAL COMMENTS: Event data details according to the predictions from IOTA Predicted event time was 03:07:19 UTC (+/- 4s) for my observing position. Predicted maximum duration was 4.3 seconds with a 3.3mag drop. Position was 35km from predicted central line in SW direction inside the shadow with a probability of 52.8%. Due to moon light and low star altitude it was impossible to use an analog camera with better timing and exposure time had to be 1s - horrible accuracy.