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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: April 15, 2022
    STAR: UCAC4 621-038470
    ASTEROID: (22) Kalliope
 
2. OBSERVER
    Name: Alberto OSSOLA
    Address: 6933 Muzzano (Switzerland)
    Email: aossola@bluewin.ch

3. OBSERVING STATION
    Nearest city: CH-6900 Lugano
    Longitude: 8d 55m 10.5s (E)
    Latitude: 45d 59m 50.6s (N)
    Altitude: 350m
    (From Google Earth)
    

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: AOTA, contrtolled and corrected by Eric Frappa
    Event Time (UTC)       Accuracy + Comments
    code: HH:MM:SS.ss      S.ss

     -S : 21:07:24
     -D : 21:09:12.28 +/- 0.89
     -R : 21:09:17.08 +/- 0.89
     -E : 21:11:00


5.TELESCOPE:
    Type: Schmid Cassegrrain
    Aperture: 230 mm
    Focal lenght: ca. 700mm (focal reducer F:6.3 and f:5)
    Magnification: -
    Filters: no
    Mount: equatorial
    Motor drive: yes

6. TIMING & RECORDING
    Sensor/Camera: Videocamera 910HX/RC, CCIR, 1/2" EXWiew HAD CCD II
    Videocamera settings: Shutter mode=x16 , Gain=34, Gamma=1
    Device of recording: Personal computer
    Virtualdub software, saved on Harddisk
    Mode of recording: Integration time:0.32 sec., CCIR, 
    Time-inserter device: IOTA VTI


7. OBSERVING CONDITIONS
    Atmospheric transparency: moderate haze
    Wind : (+)
    Star image stability: poor
    Minor Planet Visible: yes

8. ADDITIONAL COMMENTS
    Very difficult because of irregular fog and reduced drop.
    R seems to be enough sure, but D seems very uncertain.
    Enclosed report, lc, aota form.