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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 : 23/12/2008
 STAR : 2UCAC 27593946
 ASTEROID : (120348) 2004TY364

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
Magnification: -
Mount: equatorial
Motor drive: yes

6.TIMING & RECORDING:
        Occultation recorded:   NEGATIVE
        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            19:03:00
        D
        R
        E            19:19:00


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

7.OBSERVING CONDITIONS:
Atmospheric transparency: fair.
Wind: none at the observatory position.
Star image stability: some turbulence because of low altitude star.
Driftscan speed at 0,6s/pixel.
Sampling: 1 pixel = 3,6 arcsec.


8. NOTES:
The 14magV star, and its low sky position (airmass=1.9), obliged to increase the
drift scan resolution to binning 3x3. It resulted a driftscan speed of
0,6s/pixel. With this speed I could get a low signal trace. By eye inspection of
the trace I consider the time resolution of the drift-scan image
no better than 10 pixels, ie. about 6s. No  occultation occured in a temporal
duration higher than this resolution.