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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: 24 Sept 2016
STAR: TYC 1298-00763-1
ASTEROID: (45) Eugenia

2. OBSERVERS
Name: Stefano SPOSETTI, Andrea MANNA
Address: 6525 GNOSCA - Switzerland
Email: stefanosposetti@ticino.com

3. OBSERVING STATION
Nearest city: CH-6565 San Bernardino
Longitude: 9 d 11.3608 m (E)
Latitude: 46 d 27.7094 m (N)
Altitude: 1630 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: No
Event Time (UTC) Accuracy + Comments
code: HH:MM:SS.ss S.sss

-S : 00:51:18
-D : 00:55:03.61 ± 0.04 s
-R : 00:55:14.65 ± 0.04 s
-E : 00:58:06

Duration: 11.04 s ± 0.08 s

TELESCOPE
Type: Schmidt-Cassegrain, Celestron 8-inch
Aperture: 200mm
Focal length: about 800mm (with f/3.3 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; Manual Gain = 41/41; Gamma = 1.00
Device of recording: Personal computer, Imaging Source DFG/USB2-lt, Composite input, Virtualdub software, AVI file with Huffyuv compression
Time insertion device: KIWI-OSD with GPS Garmin 18 LVC
Integration time: 0.040 s

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

8. ADDITIONAL COMMENTS

Event predicted by Occultwatcher:
-Feed: IOTA
-Rank: 100
-Probability: 99 %
-Predicted lightdrop: 1.7 - 2.0 mag
-Predicted maximal duration: 14.9 s
-Target position: azimut 100 deg , elevation 32 deg
-Moon illumination: 43 %
-Moon position: azimut 87 deg , elevation 24 deg
-Moon distance from target: 15 deg


-Tangra v. 3.5 was used to produce the lightcurve.
-A time correction of -0.040 s was performed because of the use of an integrating camera.
-A lightcurve can be seen here:
http://sposetti.ch/wp-content/uploads/2014/09/Eugenia_Manna_Sposetti_San_Bernardino.png