Jupiter - December 28, 2011

[DarkerSky]

Got an early Jupiter on Dec 28th with my 12". Seeing was generally poor. IV-III.

12" x192

17.45UT to 18-30UT

Neodymimum filter

System I: 284 degrees

System II: 326 degrees

SEB and NEB looking fairly quiet. The main features on the NEB were a darker northern edge and slight undulations on the southern side - more particularly on the following side of the CM where an undulation seemed to creep into the EZ, flanked by flatter bays either side. Some dusky material seen in the EZ as plumes. These helped shape some large brighter ovals in the EZ itself.

NTB looked thin and sharp with the NTZ nicely defined as a much lighter zone sandwiched between NTB and NEB. Noticed a plume of darker material drop through the NTZ midway between the preceeding limb and CM.

NPR was well defined again as a darker cap of material with a distinct southern boundary.