Saturn Image 2005/02/11(UT)

土星月惑星研究会関西支部

Saturn Image 2005/02/11(UT)
柚木健吉,瀧本郁夫,
Brian Colville
K.Yunoki,I.Takimoto,B.Colville

Kenkichi.Yunoki (200mm Newtonian, ToUcam Pro)

2月08日にEZに白斑らしきものがあったが確信はもてなかった。今回ほぼ同じ辺りが撮像できた。画像から判断すると08日と同じ位置にWhite Spot（Bright Spot)があるようである。またSEB南辺内には白斑等の模様もいくつか確認出来る。南極地方周辺部がきれいな円ではなく不規則な様子である。

２月０８日と１１日に体系Ⅰの同経度の画像が得られました。比べてみるとＥＺの同じ辺りに白斑が認められました。

２００５年２月８日と２月１１日との画像比較しやすいように動画にしました。
02/08 15:01:43(UT) Ⅰ=108.5 Ⅲ=68.6 02/11 14:38:45(UT) Ⅰ=108.0 Ⅲ=328.2

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

Ikuo Takimoto (310mm Newtonian :ToUcam Pro )

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2005/02/11 11:07:27(UT)
I=344.1 III=209.2
De=-25.8  E.Dia=20.17"
Ring Long  dia 45.98"  Ring short dia 20.03"
15fps AVI 90sec 667/1350frams Stacked
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コメント：なんとも情けない状況です。雲ってしまいました。
[Ayauta-gun Kagawa-Prefecture Japan]
≪香川県  綾歌郡  瀧本郁夫≫

Brian Colville(300mm F10 Schmidt-Cass:ToUcam Pro)

Great images of Saturn arriving on a daily basis...great work to everyone and thanks for sharing.
I have attached a set of images from last week - 11 February 2005.
The Luminance (monochrome) images were taken through the Schuler IR rejection filter, one each in medium and hi-res mode of the ATK-1HS camera. A RGB medium and hi-res image taken with my ToUcam is also included. The 30cm Meade SCT was used, as described below. Image capture with K3CCD Tools, processed with Resgistax 2.
The ATiK camera was working at f26.5 and the ToUcam was at f23. The ToUcam was operating with a 2x barlow though the flip mirror, and the ATiK camera was set up to image with a 2x teleconverter with the light passing straight through the flip mirror. I need to work on getting an equal f-ratio with the two cameras. This setup will allow a quick colour image clip with the ToUcam and then run through the IR/Methane/UV filters in the long exposure mode of the ATiK camera. This worked well last spring while imaging Jupiter, saved time by not having to capture and combine RGB frames with the ATiK camera, and keeping the complete sequence of filters under 10min to minimize rotation of Jupiter.
Conditions were only moderate for these images...strong winds caused a lot of image motion in the video clips, but the actual image quality was good when you examined the individual frames.
Please note that I have revised my distribution list. Please let me know if anyone who does not wish to receive these images and I will revise the list.

[ Brian Colville : Cambray Canada]

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