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

1 DATE:   25 February 2025                 STAR: UCAC4 471_042744  

  ASTEROID: Purple Mountain                 N?: 3494


2 OBSERVER: Name:   Tim HAYMES 
            E-mail: 
		 Address:

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  - 21:36:30    -        
       -             -      -      :
    D  - 21:37:32.56     +/- 0.06  
    R  - 21:37:33.12     +/- 0.06 
       -             -      -      :
    E  - 21:38:30    -  
  
                          Duration : 0.56
                         Mid-event : 21:37:32.8


5 TELESCOPE: Type: C11  		Aperture: 280mm       Magnification: F/4 (0.33 Reducer)
             Mount:EQ8 Pro      Motor drive: Yes

6 TIMING & RECORDING:
  Exposure    : 		0.08s  (x2)
  Signal/noise:			5
  Time source:			GPS++
  Sensor:				WAT910HX/RC
  Recording:	    		AVI,  SharpCap v4.1.11786, HP i5 SSD W10.
  Time  insertion (specify):	1 PPS (@ start of frame)
  Event insertion (specify):	Tangra analysis

7 OBSERVING CONDITIONS:         	
  Atmospheric transparency: thin cloud    	Wind: 1 Bf       Temperature: +3 C
  Star image stability: 	strong scintination      Minor planet visible?     :  No
           

8 ADDITIONAL COMMENTS: 
 
  Plate scale    : 

  Predicted Time : 25 Feb; 21:37:33 UT   +/- 0 sec
  Combined Mag   : 13.5
  Predicted drop : 3.0
  Max. Duration  : 0.5 sec
  OW Centre Dist.: 0 mi

  Shadow Width   : 5 mi
  Alt/Az         : 37° @144°
  Moon Alt       : -58°     
  Constellation  : Sextans

  more CAMERA SETTINGS
  Gain		 : 39 dB
  Gamma		 : 1
  Setting		 x2