ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE: 2021/O8/10  STAR: UCAC4 448-069424  ASTEROID: Paris  N°: 3317

2 OBSERVER:   Name: Eric FRAPPA           Abbr: FRP
              E-mail: frappa@euraster.net
              Address: 1 rue du tonnelier 46100 FAYCELLES, FRANCE

3 OBSERVING STATION: Nearest city: Izon (33 - France)
  Longitude: W 00 21 42.1 (WGS84)
  Latitude:  N 44 55 23.8 (WGS84)
  Altitude:  8 m (MSL)
  (from IGN website)
  Single station

                         +----------------------------+
4 TIMING OF EVENTS:      |                            |
                         |  EVENT REPORTED: POSITIVE  |
                         |                            |
                         +----------------------------+
  Event code
  S: observation Start   I: Interruption start
  D: Disappearance       J: Interruption end
  R: Reappearance        B: Blink   F: Flash
  E: observation End     O: Other (specify)
  
  Abbreviations
  P.E.: Personal Equation = reaction time (for visual obs)
  Unc.: Uncertainty (global uncertainty of the given time)

                                                    Comments
  Event   Time (UT)    P.E.   Unc.   
  Code   HH MM SS.ss   S.ss   S.ss
  
    S  - 21:39:48    -      -      :

    D  - 21:40:44.56 -      - 0.08 :
    R  - 21:40:51.96 -      - 0.08 :

    E  - 21:42:00    -      -      :

                          Duration : 7.40 +/- 0.11 s
                         Mid-event : 21:40:48.3

5 TELESCOPE: Type: SCHMIDT-CASSEGRAIN   Aperture: 203 mm
             Magnification: prime focus + f/3.3 focal reducer
             Mount: EQUATORIAL          Motor drive: YES

6 TIMING & RECORDING:
  Time source: OEM Garmin GPS 16 1PPS
  Sensor: Watec 910HX/RC low light video camera - mode x16
    0.32s integration (8 frames) - fixed gain 38 dB - gamma 1
	sharpness 0 - all Sens Up, BLC, 3DNR, WDR OFF
  Recording: Laptop with SSD and W7Pro + DVC101 Pinnacle Dazzle grabber
    VirtualDub 1.10.4 and Huffyuv v2.1.1 lossless compression
    Time insertion: BlackBoxCamera GPS video time inserter
	(Times inserted checked against a DCF77 clock)

7 OBSERVING CONDITIONS:
  Atmospheric transparency: GOOD
  Wind: NO                         Temperature: 21 deg
  Star image stability: GOOD       Minor planet visible: YES

8 ADDITIONAL COMMENTS:
  Jupiter trojan.
  In the shadow, 5 km NW of the predicted centerline (Lucky Star).
  Probability: 56%.
  Photometric analysis performed with Tangra 3.7 and spreadsheet.
  SNR = 9. Measured signal drop is 82% (1.9 mag drop).
  -0.18s applied on the central time of the first output,
  to take into account the time insertion delay with the 910HX
  and 0.32s integration.