金星 月惑星研究会 関西支部

Venus Image 2007/02/21(UT)
柚木健吉
Arnaud van Kranenbu,David Arditti
K.Yunoki,Arnaud,D.Arditti
Kenkichi.Yunoki (260mm Newtonian)
久しぶりの金星撮像をした。この時刻はもう高度も低く２６㎝を設置しているスライディングルーフからは電線や前の屋根が障害となる。シーイングが悪く、おまけにフィルターにもゴーストが出てしまった。

[Kenkichi Yunoki (Sakai City Japan)]
≪大阪府 堺市 柚木健吉≫
Arnaud van Kranenburg(235mm SCT)
235mm SCT (C9.25)
SKYnyx 2-0
Seeing 4/10   Trans 9/10 (varying)
Comments (English):
Although it had been cloudy all day,the evening of wednesday the 21th suddenly cleared,showing a very transparant sky. Seeing was reasonable at that moment. Unfortunately the sky near Venus was still scattered with soms clouds,so I couldn't get a good sampling set of all channels. I started out with recordings with the 390 nm bandpass filter. Because of the great transparecy I was able to get a clear view,which is a prerequisite for this small bandpass. The filter worked very good,yielding a sharp image. Three sets of 5000 frames were taken and combined to the UV-image.
After that,clouds obscured the planet. I was able to scarcely sample enough frames in the red channel to attempt at a colour composite,so it's quality leaves something to be desired.
The images already show good promise of what is to come,certainly considering the disc is only 11" big.

[アナド:オランダ]
[Arnaud van Kranenburg:Vlaardingen Netherlands]
David Arditti (250mm Dall-Kirkham Cassegrain)
Feb. 21, which show features in IR-R 
distinct from the UV features. I have turned this data into an enlarged false 
colour image, in a separate file, for what it is worth.
 
[David Arditti: Edgware Middlesex HA8 5LW: United Kingdom]
ALPO-Japan Latest Venus Section
2007/02/26
2007/02/19