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Something weird about Venus transit images



 
 
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  #1  
Old October 11th 04, 09:21 PM
rander3127
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Default Something weird about Venus transit images

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. I know the lens
has some barrel distortion at it's widest setting but I don't think
this is the culprit since I can compensate for it in software.
Is this another oddity like the ink drop effect?

  #2  
Old October 13th 04, 03:56 PM
anton jopko
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Is it possible that these pictures were taken near the horizon which would
mean venus would be flattened just like the sun is?
just a thought
anton



"rander3127" wrote in message
...
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. I know the lens
has some barrel distortion at it's widest setting but I don't think
this is the culprit since I can compensate for it in software.
Is this another oddity like the ink drop effect?



  #3  
Old October 13th 04, 05:17 PM
Greg Crinklaw
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anton jopko wrote:

Is it possible that these pictures were taken near the horizon which would
mean venus would be flattened just like the sun is?
just a thought
anton


More likely just a function of his monitor...



"rander3127" wrote in message
...

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. I know the lens
has some barrel distortion at it's widest setting but I don't think
this is the culprit since I can compensate for it in software.
Is this another oddity like the ink drop effect?






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  #4  
Old October 14th 04, 08:17 AM
Thad Floryan
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rander3127 wrote in message . ..
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.
 




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