Imaged Saturn July 21st targeting the optical counterpart to the new SED's outbreak. The seeing was poor, effected by scattered cloud wafting through, however I have capture the discrete bright spot again that I imaged previously on July 14th. Even though the seeing was worse than July 14th the spot is brighter in this data.
I measure it to be at approx L3 169.1 Lat +46.5. The long lived dark oval is also in this data and is at L3 195.5 Lat +45. Based on the L3 & Lat of the bright spot measured July 14th & 21st it is clearly further North than the long lived dark oval and therefore more effected by the adjoining zonal wind maxima.
My measurements infer a drift rate for the bright spot of approx L3 3.6 degrees / Earth day whereas the long lived dark oval, over the last month, appears to be drifting at approx 3.1 degrees / Earth day, although my data for the last 12 months infers a drift of 3.4 degrees / Earth day. Either way the bright spot seems to have a greater drift rate.
Have attached an R channel image & animation showing the bright spot and dark oval. Also have attached a 742nm IR image and animation. The bright spot is difficult to see in IR but it is in there. It is more or less at the CM in the IR image. The IR animation need to be watched very closely to detect the bright spot.
