It had been a long time since the last time I took a image of Jupiter, so I decided to try to took one at the end of the observation session on last Saturday night.
First try to stack my 2x and 1.6x barlow, but had problem to get a good focus due to the play of my focuser. Try only using the 2x barlow, but still can't get a good focus and time was running out (want to see the 2nd half of M vs A


The result was just as expected... no good

Below is the image:
Jupiter and 3 of it's Moons (Left to right: Europa, Io and Ganymede)

Shooting info
Telescope: Vixen R200SS 800mm F4.0 + 2x Barlow + MPCC = ~1600mm F8.0
Camera: Canon 450D
Image: 30 images x 1/80s exposure @ ISO200
Moral of the story: don't rush, be patient, take your time to focus as accurately as possible and take a lots of images.
Will try again next time and hopefully will get a better result.
Have a nice day.