Saturn Image 2005/02/28(UT)

土星月惑星研究会関西支部

Saturn Image 2005/02/28(UT)
米山誠一,柚木健吉,
Jan Adelaar,Christophe Pellier
S.Yoneyama,K.Yunoki,J.Adelaar,Christophe.P

Seiichi Yoneyama(200mm F4 Newton,ToUcam PRO)

薄雲がかかっていたので、
拡大率を下げて撮影しました。
それでも光量不足でした。
≪神奈川県横浜市  米山誠一≫

Kenkichi.Yunoki (200mm Newtonian, ToUcam Pro)

[Kenkichi Yunoki  (Sakai City  Japan)]
≪大阪府  堺市  柚木健吉≫

Jan Adelaar(178mm (7') Maksutov cass:ToUcam)

seeing fair

[ジャン-アデラー:オランダ]
[Jan Adelaar:Netherlands Arnhem City]

Christophe Pellier (C14 ; ATK-1HS)

Hi all, here is my best color Saturn to date.
As my hardrive was almost full from my feb. 27th observations, I decided to go back to imaging with the IR-cut filter; and surprisingly enough for me it gave an excellent result. My previous experience was, the IR-cut filter always give a less steady image than with a color filter and so should be avoided. But, when seeing is very good like that night, it might outperform even a red filter, it seems.
Note the quick slope of resolution in a deeper IR band such as 780 nm.
Again that night, the jetstream was more or less present; although a high-pressure band was transiting in a north-south direction. I have always identified those "bands" as an excellent source of good seeing in northern France.
Best wishes
Christophe
[Christophe Pellier Bruz City , France]

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