ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 2020 December 17      		    STAR : UCAC4 606-023376

  ASTEROID: (1753) Mieke        

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: NEGATIVE  |
                          |                                  |
                          +----------------------------------+
  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  -  20:05:40.44     	on frame n°7   
    D  -  	  	 +/- 		 		 
    R  -  		 +/- 		 		 
    E  -  20:07:57.67 	        on frame n°384		  
  
  Duration :  		 sec  +/-	Mid-event:    :  :  .	 UT   (Pédicted 20:06:28 UT +/-3.9 sec)

  Was your reaction time applied to the above timings? NO
 
5 TELESCOPE: Type: Ritchey Chrétien RC10  - 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-NMEA
  Sensor: CAMERA ASI178MM -  Binning x2  - Exposition :0,364sec/f => 2.75 fps
  Gamma na   -    Gain 510/510
  Recording: Genika 10 bits - format SER - 
  Time insertion: module GPS_DCD_Time (Genika)-Synchronisation times UTC/frames with module SER Toolbox    	  (Génika)
  Event insertion (specify): PC-Windows10 

7 OBSERVING CONDITIONS: Sky : Cloudy       Wind: 0 ms       Temperature: 5 °C      Cloud : Fog
  Star image stability:  seeing 1.7 arcsec         Minor planet visible: No

8 ADDITIONAL COMMENTS: Reduction under TANGRA 3.7.3 Rev 20200512
  Predicted Max Duration: 1.3 sec  
  Predicted Magnitude Drop: 2.5 mag 

  No corrections applied / the test results show a variation of +/- 10ms whatever the exposure times between   20  and 700ms