ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 26 July 2019                   STAR: TYC 5157_01423_1  

  ASTEROID: Comacina                 N?: 489


2 OBSERVER: Name:   Tim HAYMES          
            E-mail: ********
            Address: 3 Florence Villas, Bottle Lane, Littlewick Green, SL6 3SA

3 OBSERVING STATION: Nearest city: MAIDENHEAD
  Station:  ** Temporary **
  Latitude: N 51 30 *****
  Longitude:W 00 48 *****
  Altitude: 63m

  Datum (WGS84 preferred): WGS84

                         +----------------------------------+
4 TIMING OF EVENTS:      |                                  |
                         |  OCCULTATION RECORDED: POSITIVE  |
                         |                                  |
                         +----------------------------------+
                                                    Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
    S  - 0014:32     -      -      :  The recording started at 0012 in a separate AVI sequence.
       -             -      -      :
    D  - 0015: 7.00  -    +/- 0.04    0.04s integration (1 frame). Time corrections by AOTA (G.Dangl)
    R  - 0015:18.06  -    +/- 0.02
       -             -      -      :
    E  - 0015:50     -      -      :  Ended by cloud
  
                          Duration : 11.06s
                         Mid-event : 0015: 12.53s


5 TELESCOPE: Type: SCHMIDT NEWT. Aperture:  203mm   Magnification: Prime focus F/4
             Mount:EQ6       Motor drive: Yes

6 TIMING & RECORDING:
  Time source:			GPSBOXSPRITE2-U 
  Sensor:			WATEC 910HX/RC (CCIR, #1106) 1/2 inch 752x582 array (8.6 x 8.3u)
  Recording:	                Digital tape: Sony TRV33E DV camcorder (video-in)
  Time  insertion (specify):	1 PPS, Tangra inserted time with OCR - no corrections are applied to an AVI file.
  Event insertion (specify):	TANGRA + AOTA [AVI obtained with FIREwire Express Card and MS MovieMaker in W7] 

7 OBSERVING CONDITIONS:         	
  Atmospheric transparency: 4/5      Wind: 0 B          Temperature: +18C
  Star image stability:     3/5      Minor planet visible?     :  YES        

8 ADDITIONAL COMMENTS: 
  Good clear conditions for the event, but the last 30s of extra time was spoiled by cloud.
  GPS time was X-checked with a DCF radio clock.

  Integration    :  0.04s  (x2 fields)
  Gain (dB)      :  41 dB
  Gamma          :  1.0
  S/N(Tangra)    :  5
     

  Predicted Time : 26 Jul; 00:15:06 UT   +/- 3 sec
  Combined Mag   : 10.8
  Predicted drop : 2.2
  Max. Duration  : 10 sec
  OW Centre Dist.: 2 km
  OW Probability : 99.5%
  Shaddow Width  : 200 km
  Alt/Az         : 31° @191°
  Moon Alt       : 5°    Phase: 41% @ 108 deg Distance
  Constellation  : Aquila