ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 2020 November 14              STAR: UCAC4 535-013994

  ASTEROID: 275 Sapientia         

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: POSITIVE  |
                          |                                  |
                          +----------------------------------+
  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  - 21:01:36.68     	on frame n°7   
    D  - 21:02:48.12  	 +/- 0,13		 		 
    R  - 21:02:57.70	 +/- 0,13		 		 
    E  - 21:04:04.86 	        on frame n°595		  
  
  Duration : 	 sec  9.58" +/-	0.18   Mid-event: 21:02:52.91 UT   (Pédicted 21:02:52  +/-4 sec UT)

  Was your reaction time applied to the above timings? NO
 
5 TELESCOPE: Type: NEWTON    -   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 
  Sensor: CAMERA ASI178MM -  Binning x2  - Exposition :0,252sec/fr) => 3.97 fps
  Gamma na -       Gain 510/510
  Recording: Genika 8bits - format ADV - 
  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: 10 °C   -   Cloud : 60%
  Star image stability:  seeing 1.7arcsec     -    Minor planet visible: Yes

8 ADDITIONAL COMMENTS: Reduction under TANGRA 3.7.3 Rev 20200512
  Predicted Max Duration: 12.1 sec  
  Predicted Magnitude Drop: 2 mag 

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