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Thread: What is this?

  1. #1

  2. #2
    Equitorial sundial?

  3. #3
    Can see a balance at the bottom, and behind is a lense.

  4. #4
    Master alfat33's Avatar
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    What is this?

    A camera mount for taking long exposure astronomical pictures?

    The spirit level and bracket marked in degrees would allow you to adjust to angle to match your latitude.

  5. #5
    Master bobbee's Avatar
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    Quote Originally Posted by alfat33 View Post
    A camera mount for taking long exposure astronomical pictures?

    The spirit level and bracket marked in degrees would allow you to adjust to angle to match your latitude.

    Totally agree with that one!

  6. #6
    I don't see how the camera mounts??

  7. #7
    Craftsman
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    I'm going to go with early photographic equipment too here.

  8. #8
    Master alfat33's Avatar
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    Quote Originally Posted by catch21 View Post
    I don't see how the camera mounts??
    A bracket or plate. attached to the central pinion (where the hands might have been if it was a clock).

    Bear in mind I am guessing :). But I have seen something similar.

    Here is a modern equivalent:


  9. #9
    So the camera would be mounted on the central shaft and would rotate at the same speed as the target?

  10. #10
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    it is a constant forward timing tachograph, found on engineering and exploration vessels, link to the details can be found here -

    https://forums.frontier.co.uk/showthread.php/325081-Looking-for-advice-on-ships-engineering

  11. #11
    Master alfat33's Avatar
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    Quote Originally Posted by sestrel View Post
    So the camera would be mounted on the central shaft and would rotate at the same speed as the target?
    Yes, if I'm right. It would rotate once every 24 hours matching the earths rotation. If you get the angle right as well to match the latitude, a star would seem stationary.

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