ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 06 January 2017                   STAR:  4U 570-41232  

  ASTEROID: Lutetia                       No: 21


2 OBSERVER: Name:    Wojciech Burzynski              MPC-Code: 
            Address: 15-345 Bialystok

3 OBSERVING STATION: Nearest city: Bialystok
  Station:   Ignatki
  Latitude:  53 04 07.5 N
  Longitude: 23 06 05.5 E
  Altitude:  143

  Datum (WGS84 preferred): WGS84

  Single, OR Double or Multiple station (Specify observer's name): single

                         +----------------------------------+
4 TIMING OF EVENTS:      |                                  |
                         |  OCCULTATION RECORDED: NEGATIVE  |
                         |                                  |
                         +----------------------------------+
  Type of event
  "S"tart observation   "I"nterrupt-start   "D"isappearance   "B"link   "F"lash
  "E"nd observation     "J"nterrupt-end     "R"eappearance    "O"ther (specify)

                                                  Comments
  Event   Time (UT)    P.E.   Acc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
    S  - 19:43:02,6  -      - 0.04 : 
       -             -      -      : 
       -             -      -      : 
    E  - 19:45:00,8  -      - 0.04 : 
                                    
                 Duration observed : 
                Mid-event observed : 
           predicted max. Duration : 7,2
               predicted max. drop : 0,15
               predicted Mid-event : 19:43:43

  Was your reaction time applied to the above timings? not relevant, VTI recording

5 TELESCOPE: Type: Newton     f/5                 Aperture: 300 mm
             Focal length: 1500 mm                FOV : 11,0'x 8,5'
             Mount: azimuthal                     Motor drive: yes

6 TIMING & RECORDING:
  Time source: GPS VTI 1PPS by Tomasz Wezyk, 
  Sensor:      Videocamera NOVUS NVC GDN5811C-2, CCIR, 1/3" SONY EXview HAD II
  Mode of recording: Integration time = 0.08 s,  12,5 fps
  Recording:         Laptop Dell Latitiude 3540 (Intel Core i5 1,7 GHz/RAM 8 GB/SSD 128 GB)
  Recording: Video Grabber Aver Media EzMaker 7, VirtualDub 1.10.4, uncompressed AVI 
  Time insertion:    VTI by Tomasz Wezyk (www.tomasztech.pl)

7 OBSERVING CONDITIONS: 
  Atmospheric transparency    : good 
  Wind                  (km/h): 5
  Temperature (deg C / humid.): -21 / 80
  Star image stability        : good 
  Minor planet visible        : yes

8 ADDITIONAL COMMENTS:
  Observed star                          : 4U 570-41232
  Feed                                   : IBEROC
  Distance                           (km): 38 N from the central line, in the shadow
  Shadow                             (km): 107
  Predicted probability OccultWatcher (%): 70,4
  Predicted combined magnitude      (mag): 11,0 
  Local conditions               (degree): star height: 42, sun height: -46, moon height: 36, moon distance: 84
  Atmospheric transparency               : clear
  Faintest star on AVI              (mag): 13,4
  Evaluation with Tangra 3.6.2 

E. Frappa comment: After a look at your noisy light curve sent on January and also regarding the fact that your target star is partially u saturated, 
I have considered this observation to be inconclusive, not positive or negative: a potential event could be drowned in the variations of the curve because of the very small predicted mag drop (0.15).