2004/02/29 08:04:38(UT)
K=0.6495 P=338.46
Dia=17.95"
De=-2.12
840 frames Stacked
Seeing:3/10 Trans:3/5
-----------------------------------------------------------
コメント：欠け際が不規則に見える。
[Ayauta-gun Kagawa-Prefecture Japan]
≪香川県  綾歌郡  瀧本郁夫≫

Venus on Feb.29, 2004
k = 0.65, Dia = 18.0"

UV image
IDAS-U filter (340nm - 390nm) with IR Blocker
Exposure 0.04sec
Effective Fno. = 10 (Prime focus)
09:04 (UT)
1202 frames composite

09:21 (UT)
1933 frames composite

IR image
IR96 filter (960nm - 1000nm)
09:54 (UT)
Exposure 0.3sec
225 frames composite
Effective Fno. = 26 (XP24mm Eyepiece projection)

Telescope:C11(D=280mmm fl=2800mm)
Camera:Hand-made PC camera (CCD:ICX424AL)

Seeing = 7->3/10, Transparency = 3->1/6
Observer:Masahito Niikawa Sakai Osaka JAPAN
Processed with CRoPP, Registax and Photoshop

On my way of taking image the cloud spread gradually all over the sky
so I had to stop observation unwillingly.

紫外線画像に注目です。
このパターンは、何日か前に観測したパターンです。
ここから、模様の周期を求めてみます。
これも、堺にて観測です。
≪大阪府  堺市  新川勝仁≫

2004/02/29 17:35:30 (UT)
D:150mm/f:1200mm Achromatic refractor
+2X barlow apo : Toucam PRO I
CM: 226.31
Seeing: 6/10
Trans: 8/10

2004/02/29 - 17:56:30 (UT)
D:150mm/f:1200mm Achromatic refractor
 +2X barlow apo : Toucam PRO I
RG 715 filter: ON
CM: 226.27
Seeing: 6/10
Trans: 8/10

[ Daniele Botallo : Palermo, Italy]

ALPO-Japan Latest Venus Section	2004/03/01
	2004/02/28