ASTEROIDAL OCCULTATION - REPORT FORM

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

1 DATE:                  2019 Sep 23, 20:39 (UTC)

  STAR:                  UCAC4 341-173752      mv: 13.4 mag
  ASTEROID:              (6588) 1985 RC4       mv: 17.6 mag  (diam. 9.1 km)
                         delta-magnitude:      mv:  4.2 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:              N 47 31 10.4 (WGS84)
  Longitude:             E 08 34 14.3 (WGS84)
  Altitude:              550 m (MSL)  (WGS84)

  Predicted observation: yes (located INSIDE of predicted shadow path, 4 km SW to C.L.)
                         Probability: 7%

  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     20 38 54.705    +/-  0.001 s  : Start observation (UTC)
   D                -                  : Disappearance     (UTC)
   R                -                  : Reappearance      (UTC)
   E     20 40 16.428    +/-  0.001 s  : End observation   (UTC)

   Duration:        -                  : (predicted: max. 0.8s)

   P     20 39 29        +/-  4.00  s  : Predicted time    (UTC)

        
5 TELESCOPE: 
  Type:                  Newton Reflector f/5
  Aperture:              500 mm
  Focal length:          2500 mm
  Magnification:         focal (resulting field of view: 6.6' in x-axis)
  Mount:                 equatorial
  Motor drive:           yes

6 TIMING & RECORDING:
  Time source:           GPS
  Quality of signal:     Accurancy 5m
  Camera/Sensor:         Digital Camera with integrated GPS-VTI (Prototype v1)
                         AR0130CSSM, Pixel size 3.75my, QE 77%
                         Website of the project: https://groups.io/g/d-vti-cam/
  Settings:              424x318, 3x Binning, Exposure time 250ms (4 fps), Gain 10, Format SER 16 Bit
                         No Dark Frame substracted
  Time insertion:        within Camera, visual and digital timestamp

7 OBSERVING CONDITIONS:
  Atmospheric transp.:   good, but very low at the bright horizont
  Moon:                  no
  Wind:                  no
  Star image stability:  fair 
  Altitude of star:      13° SW in Sagittarius

8 ADDITIONAL COMMENTS:    
  Feed:                      IBEROC
  Video recording software:  DvtiCamControl v4.3.4
  Light measurement tool:    Tangra v3.6.19
  Remarks:                   -
  
  
  Published by e-mail to planoccult@ls.vvs.be (Planoccult mailing list)