金星 月惑星研究会 関西支部

Venus Image 2005/11/18(UT)
David Arditti
D.Arditti

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This is the first time I have used a UV filter. It1s quite difficult as the
amount of radiation transmitted is so low, so the image is dim. It requires
the lowest shutter speed (1/25th) as well as about 50% gamma and full gain,
even with a 10-inch telescope. In contrast R or IR requires only 1/1000th s
exposure! No details revealed yet. 
 
[David Arditti: Edgware Middlesex HA8 5LW: United Kingdom]

ALPO-Japan Latest Venus Section	2005/11/19
	2005/11/15