ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE:                  2020 Feb 08, 19:11 (UTC)

  STAR:                  UCAC4 492-049845      mv: 12.2 mag
  ASTEROID:              (1579) Herrick        mv: 15.1 mag  (diam. 46.9 km)
                         delta-magnitude:      mv:  3.0 mag

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

3 OBSERVING STATION: 
  Nearest city:          Eglisau, Switzerland
  Station:               Home Observatory
  Latitude:              N 47 34 09.2 (WGS84)
  Longitude:             E 08 31 26.6 (WGS84)
  Altitude:              390 m (MSL)  (WGS84)

  Predicted observation: yes (located OUTSIDE of predicted shadow path, 46 km S to C.L.)
                         Probability: 26%

  Single station:        Stefan MEISTER

                         +----------------------------------+
4 TIMING OF EVENT:       |                                  |
                         |  OCCULTATION RECORDED: NEGATIVE  |
                         |                                  |
                         +----------------------------------+
  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     19 11 15.043    +/-  0.5 s    : Start observation (UTC)
   D     -               +/-  -        : Disappearance     (UTC)
   R     -               +/-  -        : Reappearance      (UTC)
   E     19 12 22.042    +/-  0.5 s    : End observation   (UTC)

   Duration:        -    +/-  -        : (predicted: max. 4.0s)
   
   P     19 11 31        +/-  6.00  s  : Predicted time    (UTC)

        
5 TELESCOPE: 
  Type:                  Borg Refractor f/6.6, Apochromat
  Aperture:              125 mm
  Focal length:          800 mm
  Magnification:         focal (resulting field of view: 48.5' in x-axis)
  Mount:                 EQ6, equatorial
  Motor drive:           yes

6 TIMING & RECORDING:
  Time source:           GPS
  Quality of signal:     Accurancy 7m
  Camera/Sensor:         Digital Camera with integrated GPS-VTI (Prototype v2b, #8)
                         IMX174LLJ, Pixel size 5.86my, QE ~77% @ 530nm
                         Website of the project: https://groups.io/g/d-vti-cam/
  Settings:              960x600, 2x Binning, Exposure time 500ms (2 fps), Gain +15dB, Format SER 16 Bit
                         no Dark Frame substracted, correction algorithm "Fixed pattern noise
                         reduction" applied
  Time insertion:        within Camera, visual and digital timestamp (highly accurate timestamp at bottom line)
                         Backup with NTP synced PC timestamp (not accurate, just used for comparison purposes
                         at upper left corner)
  
7 OBSERVING CONDITIONS:
  Atmospheric transp.:   good
  Moon:                  100% @ 14° distance
  Wind:                  no
  Star image stability:  fair
  Altitude of star:      30°
  Azimut of star:        113° in Cancer

8 ADDITIONAL COMMENTS:    
  Feed:                      IOTA
  Video recording software:  DvtiCamControl v4.8.1
  Light measurement tool:    Tangra v3.6.21
  Remarks:                   -
  
  
  Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)