Hi all,
meanwhile, I further simplified quite significantly the code along with the procedure of investigating mutual (Galilean) events. Only the earth-bound date-time of an event (UTC) needs to be entered into
celestia.Sci's Time dialog, the rest proceeds automatically.
Let me show you for the previously addressed two events how well they match the respective predictions.
1) 1ECL2_2003_3_13.jpg
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In this event the
shadow of Io is partially cast onto Europa. The event happened in March 13 of 2003 with a maximum around 23h 05m.
[Click on image for a bigger size and then hit your browser's fullscreen key (F11?)]Attachment:
1ECL2_2003_3_13.jpg [ 114.43 KiB | Viewed 2416 times ]
On the r.h.s you also see the filled-in Time dialog for this example. Note that the Time dialog is opened by simply clicking onto the 1st tool-button in the lower left of the canvas! Very handy...The eclipse event happend just a few minutes before Europa vanishes behind Jupiter, a small part of which you can see on the right...
Dr. Arlot's predicted time (TT=TerestialTime) for the maximum of the event is visible in the simulation settings, and indeed the display verifies the perfect agreement!
Couldn't be better...
2) 2O1_2014_12_20.jpg
+++++++++++++++++++
Here
Europa occults Io partially . The predicted maximum is at 05h:36m in perfect agreement with the
celestia.Sci simulation!
Here is the corresponding screenshot! This time the Time dialog is dogged into the main canvas on the right. Just to illustrate a few of the many possibilities...
[Click on image for a bigger size and then hit your browser's fullscreen key (F11?)]Attachment:
2O1_2014_12_20.jpg [ 98.73 KiB | Viewed 2416 times ]
Altogether, the orbit accuracy is impressive!
Enjoy,
Fridger