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 11 23 17 29 43  (II) occ (I)    A   231  0.6  57.5  54.3  69  0.036 |            17 27 48  17 29 35  17 29 43  17 29 50  17 31 38           

Data and diagrams created with Occult 4 from Dave Herald

Jupiter system - 2009/11/23

Starmap created with Guide 8 from Bill J Gray.

The setup for occultation recording

CCIR (PAL) full size video image 768x576

Limovie settings

MUTUAL OCCULTATION - REPORT

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

1.DATE: 2009/11/23
Event: Jupiter system 2O1; Europa (II) occulted 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 13.3 (WGS84)
Longitude: E 15 14 06.3 (WGS84)
Altitude:  596m         (WGS84)
           552m         (MSL)
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:    17:24:20

O:    17:29:47.9   +/- 0.1s  Occultation maximum time derived from data with  8 measurement points binning.
O:    17:29:45.7   +/- 0.3s  Occultation maximum time derived from data with 16 measurement points binning.
O:    17:29:47.0   +/- 0.6s  Occultation maximum time derived from data with 32 measurement points binning.
                             (see comments)
E:    17:35:26       

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: fair but some thin clouds passing
Wind: 1 - 5m/s
Object image stability: fair
Temperature: 282 Kelvin (+09 deg Celsius)

8.ADDITIONAL COMMENTS:
Object height above local horizon at recording start: 23.8 deg
Object height above local horizon at recording end:   23.2 deg

Only Clear glass filter (Astronomik) for CCD protection was used.
        
Video evaluation accomplished with VirtualDub1.9.7, AviSynth2.5,
Limovie0.9.29b, LimovieAverage 1.3.0.0 beta and Excel

Occultation maximum calculation with software Peranso 2.31 using Kwee-van Woerden method

3-D Position and timing
Garmin GPS18x LVC
Receiving 08 satellites
Horizontal Dilution of Precision 1.0
Geoidal separation 44.5m (Altitude 551.5MSL + 44.5 = 596.0m 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 of 2O1 on 2009/11/23 at 17:29 UTC

Video simulation - MPEG4 (1.41 MB)

CSV file, binning 8 data points (125 KB)
Excel file, binning 8 data points (581 KB)

CSV file, binning 16 data points (63 KB)
Excel file, binning 16 data points (403 KB)

CSV file, binning 32 data points (32 KB)
Excel file, binning 32 data points (315 KB)

The diagrams in an overview

Diagram binning 8 data points - click for full size

Diagram binning 16 data points - click for full size

Diagram binning 32 data points - click for full size

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