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Venus transit question

  1. Jun 11, 2004 #1
  2. jcsd
  3. Jun 11, 2004 #2


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    Rotation of the Earth during the transit changes the angle of the Sun's north pole as viewed from the telescope, maybe?
  4. Jun 11, 2004 #3
    Oh, man, that's bizarre.

    I took a movie of the thing too - think I'll have to go back and review it, but I really don't think I noticed anything like that.

    Did you get footage as venus crossed the opposite limb? I'd be curious to know if this is observational effect which is observed when it's near the sun's limb, much like the mysterious "tadpole" effect (ohterwise known as the "black drop" effect).

    What did you take the footage with? - I had a 14inch schmidt-cass and a sony 5 megapixel and my video isn't nearly as good as yours. :grumpy: :biggrin:
  5. Jun 11, 2004 #4


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    I don't think the field rotation is significant in this clip.
  6. Jun 11, 2004 #5


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    Over on another forum, someone posted this image of the transit from TRACE:

    http://vestige.lmsal.com/TRACE/transits/venus_2004/images/VenusTransit2004_1600small.gif [Broken]

    The apparent 'bobbing' motion of venus is the effect of parallax due to the satellite's orbit about the earth.

    What is the source of the clip on this page?
    Last edited by a moderator: May 1, 2017
  7. Jun 14, 2004 #6
    ^oohhh, yes that would make sense now wouldn't it? :P
  8. Jun 14, 2004 #7
  9. Jun 14, 2004 #8


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    Then it came from TRACE.
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