ASTEROIDAL OCCULTATION - REPORT FORM
					REPORTED to SODIS
    +------------------------------+  +------------------------------+
    |            EAON              |  |            IOTA/ES           |
    |                              |  |   INTERNATIONAL OCCULTATION  |
    |     EUROPEAN  ASTEROIDAL     |  |      TIMING  ASSOCIATION     |
    |     OCCULTATION NETWORK      |  |       EUROPEAN SECTION       |
    +------------------------------+  +------------------------------+

1 DATE:   2 May 2023                 STAR: UCAC4 566_048194  

  ASTEROID: Elfriede                 N?: 618


2 OBSERVER: Name:   Tim HAYMES 

3 OBSERVING STATION: Nearest city:  OXFORD, UK
  Station  : Southside Observatory Y98
  Latitude : N 51 55 40".3
  Longitude: W 01 18 47".1
  Altitude : 122m
  Datum (WGS84 preferred): WGS84

  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)

                                                  Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
    S  - 2211:07s    -      -      :
    D  - 2213:21.0         +/- 1.3
    R  - 2213:37.3  		 +/- 1.0         
    E  - 2216:00s    -      -      :
  
                          Duration : 16.3
                         Mid-event : 2213 29.2


5 TELESCOPE: Type: C11  		Aperture: 280mm       Magnification: F/6
             Mount:EQ8 Pro      Motor drive: Yes

6 TIMING & RECORDING:
  Exposure    : 			1.00 s
  Signal/noise:				12 (@ event: 2.4)
  Time source:			GPS++
  Sensor:				QHY174-GPS (5.86x5.86u), Global Shutter
  Recording:	    		FITS-12/16 BIT(2x2bin), SharpCap v4.0.9478, HP i5 SSD W10.
  Time  insertion (specify):	1 PPS (@ start of frame)
  Event insertion (specify):	Tangra analysis

7 OBSERVING CONDITIONS:         	
  Atmospheric transparency: slight haze   	Wind: 0 Bft       Temperature: +7 C
  Star image stability:  Steady      Minor planet visible?     :   Yes
           

8 ADDITIONAL COMMENTS:
  Star defocused.
  Tangra re-processed with px=3.0, OEP and Median background
 
  Plate scale    : 1.5 arcsec/pix (binned)

  Predicted Time : 02 May; 22:13:35 UT   +/- 6 sec
  Combined Mag   : 13.8
  Predicted drop : 0.2
  Max. Duration  : 21 sec
  OW Centre Dist.: 2 km
  OW Probability : 97.6%
  Shadow Width   : 139 km
  Alt/Az         : 59° @203°
  Moon Alt       : 37°     
  Constellation  : Leo

  more CAMERA SETTINGS
  Filter:        Clear
  USB Traffic	 = 0 
  Gain		 : 320
  Offset	 	 : 100
  Gamma		 : 1
  CCD Temporature: -15 C