大阪Masahito Niikawa (280mm SC, Hand-made PC camera (CCD:ICX424AL))
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この日は、海外からの紫外線観測レポートがすでに掲載されています。
私の観測と模様が同定できましたので、日、米、欧と3ヶ所の観測を使って、
模様の自転スピードの測定にトライしたいと思います。
結果が出たらレポートします。 また、赤外での異様な模様に注目です。
Venus on Feb. 08, 2004
k = 0.73, Dia = 15.5"
IDAS-U filter (340nm - 390nm) with IR Blocker
08:54 (UT)
Exposure 0.04sec
1885 frames composite
Effective Fno. = 10 (Prime focus)
IR96 filter (960nm - 1000nm)
(1)
08:54 (UT)
Exposure 0.04sec
550 frames composite
Effective Fno. = 26 (XP24mm Eyepiece projection)
(2)
09:56 (UT)
Exposure 0.04sec
990 frames composite
Effective Fno. = 26 (XP24mm Eyepiece projection)
Telescope:C11(D=280mmm fl=2800mm)
Camera:Hand-made PC camera (CCD:ICX424AL)
Seeing = 6/10, Transparency = 3/6
Observer:Masahito Niikawa Sakai Osaka JAPAN
Processed with CRoPP, Registax and Photoshop
In the middle of both IR images which are enhanced contrast
a vertical glow pattern of arc is observed.
These images are almost same as the previous day Feb.07 images.
Consider to slow rotational period of Venus surface
this pattern might be the low altitude cloud.
Is this a high temperature area of the Venus?
As the UV pattern is definitely
I'll try to analyze the rotational period of Venus SO2 cloud
with other observes' images.
≪大阪府 堺市 新川勝仁≫
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