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                ASTERIODAL OCCULTATION - REPORT FORM

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                      EAON & IOTA-ES

              EUROPEAN ASTEROIDAL OCCULTATION NETWORK

   INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

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1. DATE: 07 Mar 2014
   STAR: HIP 78193
   ASTEROID: (9) Metis

2. OBSERVER
   Name: Stefano SPOSETTI (station 1)
   Address: 6525 GNOSCA - Switzerland
   Email: stefanosposetti@ticino.com

3. OBSERVING STATION 1
   Nearest city: CH-Bellinzona
   Longitude: 09d 00m 51.0s E
   Latitude:  46d 11m 50.0s N
   Altitude: 240m
   (WGS84)

4. TIMING OF EVENTS
   Occultation recorded: POSITIVE
   Type of event:
   "S"tart observation;
   "I"nterrupt-start;
   "D"isappearance;
   "B"link;
   "F"lash;
   "E"nd observation;
   "I"nterrupt-end;
   "R"eappearance;
   "O"ther (specify)

   Personal Equation Substracted: No
   Event Time (UTC)       Accuracy + Comments
   code: HH:MM:SS.ss      S.ss
    -S : 03:08:04
    -D : 03:08:48.55 ± 0.01
    -R : 03:09:02.34 ± 0.01
    -E : 03:10:24

    Duration: 13.79s ± 0.02

5. TELESCOPE
   Type: Schmidt-Cassegrain, 8-inch
   Aperture: 200mm
   Focal length: 500mm (with focal reducer)
   Magnification: FOV about 30x24arcmin
   Mount: Equatorial
   Motor drive: No

6. TIMING & RECORDING
   Timekeeping: GPS 1PPS (US Global Sat EM-406A)
   Sensor/Camera: Videocamera WAT-902H Ultimate, 1/2" Sony CCD-Sensor ICX429ALL
   Videocamera settings: AGC=LO, Gamma=OFF
   Device of recording: Personal computer, Logilink USB Grabber, composite-video input, Virtualdub software, saved on Harddisk,
   Mode of recording: Integration time=0.040s, CCIR, Lagarith
   Time insertion device: IOTA-VTI, v.1.1.42

7. OBSERVING CONDITIONS
   Atmospheric transparency: good
   Wind: no
   Star image stability: good
   Minor Planet Visible: yes, during the event

8. ADDITIONAL COMMENTS

Automatic observation.

Several faint comparison stars were in the field of view.
Tangra was used to analyze the avi-file.
Occular 4.0 was used to plot the "signal minus background" versus time and extract the D and R times. Evaluation was made in frames.

An image of the lightcurve is posted here:
http://www.sposetti.ch/images/stories/Minor_planets/2014_MAR_7_Metis_Bellinzona_Gnosca_Biasca_Semione.png