金星 月惑星研究会 関西支部


ALPO-Japan
Venus Image 2004/02/08(UT)

瀧本郁夫,新川勝仁,
Christophe Pellier,Frank J Melillo

I.Takimoto,M.Niikawa,Christophe,Frank


Ikuo Takimoto (310mm Newtonian :ToUcam Pro )
2004/02/08 08:36:22(UT)
C.M.=282.82
P=337.19
K=0.7263
Dia.=15.53"
De=-0.51
515 frames Stacked
Seeing:2/10 Trans:4/5
-----------------------------------------------------------
コメント:昼間も撮影したが、シンチレーションが悪かった。
何も模様が見えない。
The scintillation was bad although a photograph was also taken daytim
e.
No patterns are in sight.
[Ayauta-gun Kagawa-Prefecture Japan]
≪香川県  綾歌郡  瀧本郁夫≫


大阪Masahito Niikawa (280mm SC, Hand-made PC camera (CCD:ICX424AL))
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≫


Christophe Pellier (C14 webcam Toucam Pro)

Here are some recent Venus images - seeing was good on both days. The UV images keep on showing interesting details. Most surprising is that bright patch in the UV image of feb. 8th ! Does anyone know what it could be ? In IR, again some faint dark markings. Best wishes Christophe [Christophe Pellier Bruz City , France]
Frank J Melillo()
Here is an animation of Venus taken by Christophe Pellier and myself on February 8th.
The two images you see here at below are 5 hours and 15 minutes apart and it is obvious that all features are rotating from right to left.
It is a first time I ever see something like this!!
Japanese
(このアニメ画像は上が北になっています。)
2月8日のフランスのChristophe  の画像と私の画像でGIFアニメを作りました。
5時間15分の時間差により、循環していることがよく見えます。
このようなものを見るのは私も始めてです。
[Frank J Melillo  Holtsville NY U.S.A]

ALPO-Japan Latest Venus Section
2004/02/09
2004/02/07