Last night the sky suddenly cleared up and I decieded to try imaging Io's shadow transit and the moon.
Transparency was perfect but seeing was bad, the moon appears horrible on screen and my ETX was not tracking very well, so I decided to image Jupiter only.
My initial plan was to image Jupiter from GRS's appearance to Io's reappearance and then make an animation. However, at around 4:20am, I found the image becoming dimmer and dimmer, and then found the corrector plate covered with thick dew
Before that I only got 4 video clips from 4:00 to 4:20 but the first video had problems with two frames which almost make the operating system collapse... So the only 3 video clips I could use were from 4:10 to 4:20. However, Jupiter's rotation and Io's shadow movement were still very obvious in the short animation.
You can see that the three frames in the animaition are not 100% aligned, since field rotation was already obvious during this ten minutes, which maked aligning the images difficult... Hope you folks can give some suggestions on aligning such images~~~
Now have updated my first lunar moasic using the trial videos I shot at the same night. As the videos are short and seeing was bad, three of the six images are achieved by stacking only 50 - 60 frames...
Jia Hao
"The universe is composed mainly of hydrogen and ignorance." 
