ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE:                  2022 Mar 24, 00:41 (UTC)

  STAR:                  TYC 2421-00831-1      mv: 11.7 mag
  ASTEROID:              (438) Zeuxo           mv: 15.2 mag  (diam. 61.0 km)
                         combined magnitude:   mv: 11.7 mag
                         delta-magnitude:      mv:  3.5 mag

2 OBSERVER:
  Name:                  Stefan Meister
  E-mail:                meister@dolphins.ch
  Address:               Sandgruebstr. 9, CH-8193 Eglisau, Switzerland

3 OBSERVING STATION:
  Nearest city:          Buelach, Switzerland
  Station:               Observatory Buelach (MPC Observatory Code: 167)
                         http://www.sternwartebuelach.ch/
  Latitude:              N47 31' 10.402" (WGS84)
  Longitude:             E08 34' 14.300" (WGS84)
  Altitude:              550 m (MSL)  (WGS84)
  Single station:        yes

  Predicted observation: yes (Distance 23.8 km from C.L.)
                         Probability: 75.8 percent


                         +----------------------------------+
4 TIMING OF EVENT:       |                                  |
                         |  OCCULTATION RECORDED: POSITIVE  |
                         |                                  |
                         +----------------------------------+
  Type of event:
   S = Start observation I = Interrupt-start   D = Disappearance
   B = Blink             F = Flash             E = End observation
   I = Interrupt-end     R = Reappearance
   M = Mid-event         P = Predicted time

  Event  Time (UTC)      Acc.         Comments
  Code   HH MM SS.sss    S.sss

   S     00 41 39.463    +/-  0.001 s  : Start observation (UTC)
   D     00:41:53.470    +/-     *  s  : Disappearance     (UTC)
   R     00:41:54.571    +/-     *  s  : Reappearance      (UTC)
   E     00 42 09.577    +/-  0.001 s  : End observation   (UTC)

   Duration:    1.101    +/-     *  s  : (predicted: max. 4.2 s)
   M     00:41:54.021    +/-     *  s  : Mid-event         (UTC)       
   P     00 41 54.767    +/-  1.817 s  : Predicted time    (UTC)

* Accurancy with confidence intervals from PyOTE: 

magDrop: 3.594  +/- 0.990  (0.95 ci)
snr: 2.82

D time: [00:41:53.4700]
D: 0.6800 containment intervals:  {+/- 0.0196} seconds
D: 0.9500 containment intervals:  {+/- 0.0557} seconds
D: 0.9973 containment intervals:  {+/- 0.1235} seconds

R time: [00:41:54.5710]
R: 0.6800 containment intervals:  {+/- 0.0196} seconds
R: 0.9500 containment intervals:  {+/- 0.0557} seconds
R: 0.9973 containment intervals:  {+/- 0.1235} seconds

Duration (R - D): 1.1010 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0301} seconds
Duration: 0.9500 containment intervals:  {+/- 0.0700} seconds
Duration: 0.9973 containment intervals:  {+/- 0.1571} seconds


5 TELESCOPE: 
  Type:                  Cassegrain Reflector f/8
  Aperture:              800 mm, 11.7% obstruction
  Focal length:          6500 mm (with reducer)
  Magnification:         focal (resulting field of view: 6' in x-axis)
  Mount:                 equatorial
  Motor drive:           yes

6 TIMING & RECORDING:
  Time source:           GPS
  Quality of signal:     Accuracy 1 m
  Camera/Sensor:         Digital Camera with integrated GPS-VTI (DVTI CAM Prototype V3, serial #15)
                         Image Sensor Sony IMX174LLJ-C (1/1.2" 1920x1200 5.86um CIS)
                         Website of the project: https://groups.io/g/d-vti-cam/
  Settings:              640x400, Exposure time 100 ms, Gain +30 dB D, Binning 3x3, Format ADV 16-bit
                         without Dark Frame, but correction algorithm "Fixed pattern noise red." applied
  Time insertion:        Digital GNSS timestamp into image sensor data stream

7 OBSERVING CONDITIONS:
  Atmospheric transp.:   poor
  Moon:                  64 percent lit, distance 162 deg
  Wind:                  -
  Star image stability:  fair
  Altitude of star:      13 deg
  Azimut of star:        301 deg in Auriga

8 ADDITIONAL COMMENTS:
  Feed:                      IOTA Updates
  Video recording software:  DVTI Cam Control v5.0.1-0
  Light measurement tool:    PyMovie v3.3.1 and PYOTE v4.2.1
  Remarks:

  Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)