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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: 08 Oct 2017
   STAR: TYC 5632-00827-1
   ASTEROID: (173) Ino

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

3. OBSERVING STATION
   Nearest city: CH-6600 Locarno
   Longitude: 8 d 47.2554 m (E)
   Latitude: 46 d 10.3364 m (N)
   Altitude: 368 m
   (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: -
   Event Time (UTC) Accuracy + Comments
   code: HH:MM:SS.ss S.sss

-S : 18:21:36
-D : 18:27:22.09 ± 0.02 s
-R : 18:27:26.45 ± 0.02 s
-E : 18:31:10

   Duration: 4.36 s ± 0.04 s


5. TELESCOPE
   Type: Schmidt-Cassegrain, Celestron 8-inch
   Aperture: 200mm
   Focal length: 800mm (with focal reducer)
   Magnification: -
   Mount: Equatorial
   Motor drive: Yes

6. TIMING & RECORDING
   -Sensor/Camera: Videocamera WAT-910HX-RC, CCIR, 1/2", ICX429ALL sensor
   -Videocamera settings: Shutter = x2; Gain = 41/41; Gamma = 1.00
   -Device of recording:  Imaging Source DFG/USB2-lt, Composite input, Virtualdub software, AVI file uncompressed
   -Time insertion device: IOTA-VTI, v.1.1.42
   -Integration time: 0.040 s

7. OBSERVING CONDITIONS
   -Atmospheric transparency: good
   -Wind: no
   -Star image stability: fair/poor
   -Minor Planet Visible: -

8. ADDITIONAL COMMENTS
-Target position at: azimut = 234 deg; elevation = 16 deg
-Moonlight: no

Accordingly to Occultwatcher prediction (IOTA feed):
-Rank: 100
-Probability: 100 %
-Combined magnitude: 11.0 mag
-Asteroid magnitude: 13.6 mag
-Lightdrop: 2.6 mag
-Max duration: 4.6 s
-Event time: 18:27:26 UT
-Error in time: 1 s
-Moon distance: -
-Moon illumination: -

-Tangra v. 3.6 was used to generate the lightcurve (aperture photometry, average background).
-A correction of -0.040 s was applied because of the use of an integration camera.
-A lightcurve can be seen here:
http://sposetti.ch/wp-content/uploads/2014/09/2017Oct08_Ino.png