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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 : 2010 Jan 14 
 STAR : 2UCAC 38224770
 ASTEROID : (442) Eichsfeldia

2.OBSERVER:
Name: Stefano SPOSETTI
Address: CH-6525 Gnosca, Switzerland
E-mail: stefanosposetti@ticino.com

3.OBSERVING STATION:
Nearest city: CH-6500 Bellinzona
Station: Gnosca Observatory
Latitude: 46deg 13min 54sec (N)
Longitude: 9deg 1min 30sec (E)
Altitude: 260 m
Single/Multiple: single

5.TELESCOPE:
Type: Newtonian
Aperture: 40cm f/4
Magnification: -
Mount: equatorial
Motor drive: yes

6.TIMING & RECORDING:
        Occultation recorded:   POSITIVE
        Personal Equation Substracted: No because of electronic timing
        Event Time in UT
        Code:        HH:MM:SS.ss  S.ss
        Code:        HH:MM:SS.ss  S.ss
        S            23:17:20
        D            23:19:12.3  ± 0.3s
        R            23:19:17.2  ± 0.3s
        E            23:21:00


Duration of the occultation: 4.85s ± 0.2s

Timekeeping: via Computer ("Dimension4" software)
Mode of recording: CCD drift-scan ("Winscan 207" software)
Device of recording:  CCD (SBIG ST8XME)

7.OBSERVING CONDITIONS:
Atmospheric transparency: fair
Wind: none at the observatory
Star image stability: good
Driftscan speed at 0.05s/line
Sampling: 1.2arcsec/pixel
FWHM of stars: 5arcsec


8. NOTES:

TECHNICAL NOTES

The luminosity drop lasted 4.85s ± 0.2s.
The intensity of the lightcurve dropped from about 11500 to roughly 4000. The
division gives 0.35, ie. a drop of 1.1mag (prediction: 1.1mag).

An image of the scan is here.
http://web.ticino.com/sposetti/Eichsfeldia_2010Jan14.gif