Jupiter moon Europa eclipsed Io

Jupiter moon Europa (II) eclipsed Io (I) - 2E1
September 20, 2009

Seite in Deutsch Overview - all events Frameless version of this page

The prediction of the penumbral 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 20 23 19 34  (II) ecl (I)    E   226  0.2  84.4  41.3  69  0.693 |  23 17 41                      23 19 34                      23 21 26

Data and diagrams created with Occult 4 from Dave Herald

Jupiter system - 2009/09/20

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

MUTUAL ECLIPSE - REPORT

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

1.DATE: 2009/09/20
Event: Jupiter system 2E1; Europa (II) eclipsed Io (I)

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 28.4 (WGS84)
Longitude: E 15 13 59.8 (WGS84)
Altitude:  601m         (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:    23:09:45
E:    23:25:44       

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, AVI, YUY2, Huffyuv,
Device of recording: TIS DFG/USB2-lt Videograbber USB2.0, Notebook Harddisk
Time insertion: KIWI-OSD 

7.OBSERVING CONDITIONS:
Atmospheric transparency: very bad (dense ground fog)
Wind: No
Object image stability: fair
Temperature: 284 Kelvin (+11 deg Celsius)

8.ADDITIONAL COMMENTS:
Object height above local horizon at recording start: 15 deg
Object height above local horizon at recording end:   13 deg

Only about one minute before the eclipse start Io reappeared from the shadow of Jupiter.

At the last minutes of the recording Jupiter was dimmed out near
to the limit of unaided eye visibility by the dense ground fog.

Only Clear glass filter (Astronomik) for CCD protection was used.
        
Video evaluation accomplished with VirtualDub1.8.6, AviSynth2.5,
Limovie0.9.29b, LimovieAverage 1.3beta and Excel

3-D Position and timing
Garmin GPS18x LVC
Receiving 08 satellites
Horizontal Dilution of Precision 1.1
Geoidal separation 44.5m (Altitude 556.8MSL + 44.5 = 601.3m 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

Video, measurement data and results in csv and Excel data format of 2E1 on 2009/09/20 at 23:19 UTC

Time lapse video 50x with simulation overlay - MPEG4 (1.89 MB)

CSV file, binning 8 data points (179 KB)
Excel file, binning 8 data points (1.55 MB)

CSV file, binning 16 data points (90 KB)
Excel file, binning 16 data points (1.21 MB)

CSV file, binning 32 data points (45 KB)
Excel file, binning 32 data points (1.04 MB)

The diagrams in an overview

Diagram binning 8 data points, overview - click for full size