Re: Something weird about Venus transit images
From: Juan M. Lleras (julleras_at_unete.com)
Date: 10/14/04
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Date: 14 Oct 2004 15:32:49 -0700
thad@thadlabs.com (Thad Floryan) wrote in message news:<179a6eb9.0410132317.5564443b@posting.google.com>...
> rander3127 <rander3127@rogers.com> wrote in message news:<0lqlm0ls8liqrjkqgajq76nodp730a89hs@4ax.com>...
> > I've seen this on more than a few images, my own being a case in
> > point. In some cases, the image of Venus is not round, it's ovoid,
> > like Jupiter. Does anyone know what caused this? I used an Olympus
> > C-3040 which is prosumer model with fixed zoom lens.
>
> Shoulda used a variable zoom lens for higher magnification, and I bet
> you also forgot to use the flash; Venus is closer to the Sun than the
> Earth thus there'll be a dark crescent in the Sun's shadow -- the flash
> on your camera would've filled-in the dark crescent nicely and 2 remote
> flashes to the side of Venus would have created a nice halo effect from
> the light bounce off Venus' clouds. This is a simple photo trick you can
> find in the September issue of Popular Photography.
>
> :-)
>
> Since when has Jupiter appeared ovoid? Surely not at opposition.
You cannnot be serious! Light from your flash would be irrelevant by
the time it gets to Venus. Your flash might lighten the 'haze' around
you, but not Venus's clouds.
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