ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 2020 September 12              STAR: UCAC4 602-020082

  ASTEROID: (4534) Rimskij-Korsako          

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  - 03:17:19.36     	on frame n°7   
    D  - 	  	 +/- 		 		 
    R  - 		 +/- 		 		 
    E  - 03:19:17.69 	        on frame n°498		  
  
  Duration : 	 sec  		Mid-event:  UT   (Pédicted 03:18:01  +/- 3sec)

  Was your reaction time applied to the above timings? NO
 
5 TELESCOPE: Type: Ritchey-Chrétien - Aperture: 254 mm -  Magnification: Focus 1340 mm (réduc x0.67)

             Mount: Equatorial          Motor drive: YES

6 TIMING & RECORDING: 
  Time source: GPS 1 PPS (NMEA)
  Sensor: CAMERA ASI178MM -  Binning x2  - Exposition :0,24sec/f) = 4 fps
  Gamma 0 -   Gain 422/510  -  Black 22
  Recording: Genika 8bits  mode SER - 
  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: 13,6 °C
  Star image stability: good - seeing 1.3 arcsec    -    Minor planet visible: No

8 ADDITIONAL COMMENTS: Reduction under TANGRA 3.7.3 Rev 20200512
  Predicted Max Duration: 1.1 sec  max
  Predicted Magnitude Drop: 5.8 mag 
  maximum corrections applied = 10ms for exposures between 20 and 700ms: Jitter 0.74ms (correct by Tangra)