Venus on Aug.04, 2001
k = 0.74, Dia = 14.7"

[U1}
2001/08/03 20:00 (UT)
160 frames composite

[IR92]
2001/08/03 21:29 (UT)
145 frames composite

Observer:Masahito Niikawa
Email:zba03198@bird.zero.ad.jp
Obs.site : Mozuhonmachi Sakai-City Osaka Japan
Telescope : C11 (SC) D=280mm fl=2800mm

Camera:Minolta DimageEx1500 Digital Camera taking lens removed
CCD:ICX205AL (Sony Monochrome CCD)

Near UV Image
indicate [U]
Filter: IDAS-U (350nm - 390nm)
Exposure :1/15
F No.:10 (No Projection)

IR image
indicate [IR]
Filter: IR92 (920nm - 1000nm)
Exposure :1/30
F No.:10 (No Projection)

Seeing = 7/10~9/10 ,Transparency = 2/6

Image Processing;
Enhanced with unsharp masking method.

Caption:
Polar Caps noted.
2 dark area along the terminator fan out symmetrically
from the equator.in IR image.

説明
極冠がある。
赤外画像では、欠け際に沿った扇形の２つの暗い領域が
赤道に対して対称的に拡がっている。
　　　　　　≪大阪府　堺市　新川勝仁≫

ALPO-Japan Latest Venus Section	2001/08/04
	2001/07/25