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Thread: I'm planning building an EQ platform

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    Default Re: I'm planning building an EQ platform



    Quote Originally Posted by Aero787 View Post
    I don't understand how yours is working Camel, nothing seems to slide, rotate or anything, stress must build in the rod and the motor shouldn't turn passed a certain angle
    The screw goes through a T nut that is mounted rather loose in the hole so it allows for small angular changes. To keep the T nut's rotation around one axis I put in two pointy screws from the bottom that lift the nut by 2 mm or so. They touch the T nut in 2 places on a line parallel to the hinge. I try to keep things very simple, that's the whole idea. The motor axis sits freely in a rectangularly shaped hole in blob of epoxy putty mounted on top of the screw.

    Quote Originally Posted by Aero787 View Post
    I still have one question, what exactly is y0 and y1 ?
    y0 and y1 represent the initial and final position (in cm IIRC) in terms of the length of thread showing. So, 0 cm means that the boards are closed together. For the one that I still have, the initial position was 3 cm and the final was 1 cm. That is enough for about 6 degrees of rotation, a little over 20 minutes. That is enough for most of my pictures (wide view MW), after that a reset is needed and the view of the sky is slightly rotated if you continue on the same target.
    Clear skies, Henk. Telescopes: Carbon fiber ES ED127CF, Zhumell Z12, Coulter Odyssey 10, AT6RC, Venture RX-7, Celestron Skymaster 20x80, Mounts and tripod: AVX, LXD55, Tiltall, Cameras: Canon (SX40, 450D, 350D, ELPH 100HS), Samsung NX100, DIY: Dob and camera barndoor trackers, afocal adapter, foldable Dob base with leveling feet, Az/Alt setting circles, Accessories: Counterweight bar attachment, Plossls, Barlows, Telrad, SSAG, laser collimators (Seben LK1, Z12, Howie Glatter), Cheshire, 2 Orion RACIs 8x50, Software: DSS, ImageMagick, PHD, Nebulosity, Photo Gallery, Gimp, CHDK

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  2. The Following User Says Thank You to CamelHat For This Useful Post:

    Aero787 (03-28-2017)

 

 
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