I observed Jupiter too :
I used at the "holiday" Observatory Kirchheim/Thüringen the
really nice 250/5000mm Lichtenknecker-Kutter.
The seeing was at the eveningvery good.
I used my bino with 20mm eyepieces so -> 250x
2011-02-09 , 16:35 UT
2011-02_09 , 17:00 UT
The too dark spot near the GRF were very interesting. They looked like too moon shadows !
The big "oval" behind (II ~210°)the GRF is very interesting too.