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EAON & IOTA-ES

EUROPEAN ASTEROIDAL OCCULTATION NETWORK

INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

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1. DATE: 6 Jan 2017
STAR: 4U 538-9473
ASTEROID: (10057) L'Obel

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

3. OBSERVING STATION
Nearest city: CH-6525 Gnosca
Longitude: 9d 1m 26.5s (E)
Latitude: 46d 13m 53.2s (N)
Altitude: 260m
(WGS84)

4. TIMING OF EVENTS
Occultation recorded: NEGATIVE
Type of event:
"S"tart observation;
"E"nd observation;

Event Time (UTC) Accuracy + Comments
code: HH:MM:SS.ss S.ss
-S : 18:30:27
-E : 18:36:00

5.TELESCOPE:
   Type: Newtonian
   Aperture: 400mm
   Focal length: 930mm (with focal reducer)
   Magnification: -
   Mount: equatorial
   Motor drive: yes

6. TIMING & RECORDING
   Timekeeping: GPS 1PPS (US Global Sat EM-406A)
   Sensor/Camera: Videocamera WAT-120N+, CCIR, 1/2" Sony CCD-Sensor ICX419ALL
   Videocamera settings: Shutter mode = slow 5, Gain=HI , Gamma=OFF
   Device of recording: Personal computer, Hauppauge HVR-1700(PCI), S-video input
   Virtualdub software, saved on Harddisk, Huffyuv compression
   Integration time = 0.640s
   Time insertion device: IOTA-VTI, v.1.1.42

7. OBSERVING CONDITIONS
Atmospheric transparency: good
Wind: fair
Star image stability: fair
Minor Planet Visible: -

8. ADDITIONAL COMMENTS
-