Jupiter moon Io (I) eclipsed Europa (II) - 1E2
September 01, 2009

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The prediction of the partial eclipse

Year  M  D  h  m  s  Event Type     Ph   Dur dMag  %Ill   Sep  PA  MinD      h  m  s   h  m  s   h  m  s   h  m  s   h  m  s   h  m  s   h  m  s
2009  9  1 21  3 47  (I) ecl (II)    P   680  0.5  62.0 154.1  70  0.523 |  20 58  7  21  0  2            21  3 47            21  7 31  21  9 26 

Diagram of the eclipse
Data and diagrams created with
Occult 4 from Dave Herald

 

Jupiter system - 2009/09/01
Jupiter system
Starmap created with Guide 8 from Bill J Gray.


The setup for eclipse recording

Diagram of equipment setup

 

CCIR (PAL) full size video image 768x576
Video image Jupiter system

 

Limovie settings
Limovie settings

 

MUTUAL ECLIPSE - REPORT

MUTUAL ECLIPSE - REPORT
EAON & IOTA-ES
EUROPEAN ASTEROIDAL OCCULTATION NETWORK
INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

1.DATE: 2009/09/01
Event: Jupiter system 1E2; Io (I) eclipsed Europa (II)

2.OBSERVER:
Name: Gerhard Dangl
Phone: ++43-(0)2842-53908
Address: AUSTRIA, A-3830, Nonndorf 12
E-mail: gerhard@dangl.at

3.OBSERVING STATION:
Nearest city: Waidhofen/Thaya
Latitude:  N 48 47 13.3 (WGS84)
Longitude: E 15 14 08.3 (WGS84)
Altitude:  599m         (WGS84)
Single/Multiple: Single

4.TIMING OF EVENTS:
Type of event:
"S"tart observation; "I"nterrupt-"s"tart; "D"isappearance;
"B"link; "F"lash; "E"nd observation; "I"nterrupt-"e"nd;
"R"eappearance; "O"ther (specify)

Recording time HH:MM:SS UTC
S:    20:54:51

O:    21:03:41.0   +/- 10.4s  Eclipse maximum time derived from data with  8 measurement points binning.
O:    21:03:42.0   +/- 11.2s  Eclipse maximum time derived from data with 16 measurement points binning.
O:    21:03:41.1   +/- 13.0s  Eclipse maximum time derived from data with 32 measurement points binning.
                             (see comments)
E:    21:15:15       

5.TELESCOPE:
Type: Newton
Focal length: 1200mm + Powermate 2.5x = 3000mm effective focal length
Aperture: 254 mm
Magnification: video/primary focus/FOV 7.3'x5.5' (768x576, 0.57"x0.57" per pixel)
Mount: Equatorial
Motor drive: Yes

6.TIMING & RECORDING:
Timekeeping: GPS 1PPS Garmin 18x LVC + KIWI-OSD
Sensor/Camera: WAT-120N, CCIR, 1/2" Sony CCD-Sensor ICX419ALL, GAMMA=OFF (linear)
Mode of recording: It=40ms (25 Img/s),  Video CCIR, UYVY, Huffyuv, HFYU coded AVI,
Device of recording: TIS DFG/USB2-lt Videograbber USB2.0 (UYVY), Notebook Harddisk
Time insertion: KIWI-OSD 

7.OBSERVING CONDITIONS:
Atmospheric transparency: good
Wind: No
Object image stability: good
Temperature: 287 Kelvin (+14 deg Celsius)

8.ADDITIONAL COMMENTS:
Object height above local horizon at recording start: 24.3 deg
Object height above local horizon at recording end:   25.0 deg

Only Clear glass filter (Astronomik) for CCD protection was used.
        
Video evaluation accomplished with VirtualDub1.8.6, AviSynth2.5,
Limovie0.9.29b, LimovieAverage 1.2.0.0 and Excel

Occultation maximum calculation with software Peranso 2.31
using Kwee-van Woerden method or polynominal fit.

3-D Position and timing
Garmin GPS18x LVC
Receiving 09 satellites
Horizontal Dilution of Precision 1.0
Geoidal separation 44.5m (Altitude 554.1MSL + 44.5 = 598.6m in WGS84 datum)

Gerhard Dangl
gerhard@dangl.at
www.dangl.at/


The evaluation of the measurement data

The evaluation of the measurement data from recorded video was done with the software packages below:

VirtualDub
Limovie
Avisynth
LimovieAverage
Help text, using LimovieAverage with mutual events


Measurement data and results in csv and Excel data format

CSV file, binning 8 data points (229 KB)
Excel file, binning 8 data points (978 KB)

CSV file, binning 16 data points (115 KB)
Excel file, binning 16 data points (701 KB)

CSV file, binning 32 data points (58 KB)
Excel file, binning 32 data points (653 KB)

The diagrams in an overview

 

Diagram binning 8 data points - click for full size
Click for full size

 

Diagram binning 16 data points - click for full size
Click for full size

 

Diagram binning 32 data points - click for full size
Click for full size

 


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December 14, 2009
Kuvert Questions and suggestions to => Gerhard Dangl

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