ASTEROIDAL OCCULTATION - REPORT FORM

    +------------------------------+  +------------------------------+
    |           EAON               |  |            IOTA/ES           |
    |                              |  | INTERNATIONAL OCCULTATION    |
    |     EUROPEAN  ASTEROIDAL     |  |      TIMING  ASSOCIATION     |
    |     OCCULTATION NETWORK      |  |       EUROPEAN SECTION       |
    +------------------------------+  +------------------------------+

1 DATE (YYYY/MM/DD): 2019/03/31   STAR: 4UC475-051755   ASTEROID: ALETHEIA  N°: 259 

2 OBSERVER: Name: Maciej Czepita              EAON Abbr:

            Address: 72-003 Dobra, Poland

3 OBSERVING STATION: Nearest city: Szczecin 

  Longitude E 14 23 29.7 (WGS84)  
  Latitude  N 53 29 48.9 (WGS84)
  
  Altitude (m): 30 m (MSL)  


4 TIMING OF EVENTS:   EVENT REPORTED: NEGATIVE  

  Event   Time (UT)    P.E.   Acc.   
  
  Code   HH:MM:SS.ss   S.ss   S.ss
     
    S  - 21:44:02.084   -      0.03 s
    E  - 21:48:13.792       -   0.03 s.
  

5 TELESCOPE: Type: NEWTON    Aperture: 152 mm        
             Magnification: prime focus + f/2.5 focal reducer
             
             Mount: EQUATORIAL          Motor drive: YES    


6 TIMING & RECORDING:
  
  Time source: intermittent radio controlled clock updated before event - Vector RC 22 receiving DCF77 time signal
  Sensor: Watec 910HX/RC low light video camera

  Recording: A recording of the event was made on my laptop computer using ActivePresenter version 6.1.6 software. 
  The radio controlled clock was set to ring at 21:46:00 UT. 
  This was captured in the recording and compared with the time in the timestamp. 
  The difference in the time in the timestamp and the time from the radio controlled clock was calculated and adjusted for.
    
  Time insertion (specify): Sharp Cap 3.0 software inserted time from my laptop computer. 
  The computer time was updated just before event using network time protocol   

7 OBSERVING CONDITIONS:
  
  Atmospheric transparency: GOOD     
  Wind: NO    
  Temperature: 10deg 
  Star image stability: GOOD 
  Minor planet visible: YES

8 ADDITIONAL COMMENTS: The recording was analyzed using Tangra version 3.6.17