Moon shadows

Hi!
Here's my first try of photographing shadow transit in Jupiter. And it (shadow) doesn't look very special.
I thought I could do better, compared to what I have seen here and in other forums.
So my question: what could I do to improve the visibility of the shadow (or Jupiter's belts as well) ?
Some data:
Orion StarMax 127, 10mm Plössl, Philips Vesta webcam, 30 best frames out of 150-frame avi-video and K3CCDTools.

Attached Image:

Tapio,

I'm not familiar with the Vesta webcam, but if you can remove its lens and attach it to your scope in prime-focus mode - you might get better results (leveraging its focal-length). If seeing conditions permit, you can add a barlow to increase image size.

I took this shot last night (prime focus) using a Quickcam VC and my C8Dlx @f/10. Seeing conditions would not support a barlow, but you can still make out some detail given the small image scale.

Hope this helps,
Bill

Attached Image: