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Saturn Image 2013/07/21(UT)
小澤徳仁郎,堀内 直
Trevor Barry
T.Kozawa,T.Horiuchi,T.Barry
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Kozawa Tokujiro(318mm Newtonian) |
1カット撮影できたのみであった。輝度は大きく変化しユラユラと揺れていたが
画像処理の結果は比較的良くまとまった。
(Kozawa Tokujiro : Hachiouji-City Tokyo Japan)
≪小澤徳仁郎:東京都八王子市≫
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Tadashi Horiuchi(300mm Newtonian) |
《京都府宇治市、堀内直》[T.Horiuchi: Uji- City Kyoto Japan]
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Trevor Barry(406mm Newtonian) |
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. Have attached R channel images & animation showing the bright spot, the dark oval is in the 2nd R channel image.
Also have attached 2 742nm IR images 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 first IR image. The IR animation need to be watched very closely to detect the bright spot.
[Trevor Barry:Broken Hill:Australia]
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