ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 2021 May 24     		    STAR : UCAC4 361-167169

  ASTEROID: (16921) 1998 FZ52       

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

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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  -   1:39:53.38     	on frame n°7   
    D  -   	  	 +/-		 		 
    R  -   		 +/- 		 		 
    E  -   1:42:09.66 	        	on frame n°279		  
  
  Duration : 	 sec  xxxx +/-	Mid-event: xxxxx  (Pédicted 1:40:58  +/- 8.8 sec UT)

  Was your reaction time applied to the above timings? NO
 
5 TELESCOPE: Type: Ritchey Chrétien RC10  - Aperture: 254 mm  -  Magnification: Focus 1340mm    - F/D=5.27
             Mount: Equatorial   -  Motor drive: YES

6 TIMING & RECORDING: 
  Time source: GPS 1 PPS-NMEA
  Sensor: CAMERA ASI178MM -  Binning x2  - Exposition : 0,5 sec/f  => 2 fps
  Gamma na   -    Gain 510/510    -   Black 543/600
  Recording: Genika 10bits - 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: Clear      Cloud : 0 	Wind: 0 ms       Temperature: 12 °C      
  Star image stability:  seeing 2 arcsec         Minor planet visible: No

8 ADDITIONAL COMMENTS: Reduction under TANGRA 3.7.3 Rev 20200512
  Predicted Max Duration: 2.3sec  
  Predicted Magnitude Drop: 4.9 mag 

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