3D Printing Projects:
Design, Printing, Implementation

RASA cable router clamps
Updated 1/31/24

 

      
 These cable routing
      clamps provide a secure and asthetic tie down for camera and
      power cables for the RASA 8 inch.

      
Why 2 at 90 degrees?

      
Most images just leave
      thier cables hang in an unruly fashion, and this results in strange
      and asymetrical spikes and extensions to brighter star images,
      which as you know looks very unprofessional. Curved arcs have
      been used as well for routing in a semicircular path, however
      we tried several commercial versions and they always produced
      ugly lumps on both sides of bright stars and made the stars look
      deformed or badly guided. Here we mount the cables on two tie
      down struts at 90 degrees. This produces a symetric cross shaped
      diffraction pattern like a Newtonian would produce however -
      because it is only on one side they are half the strength of
      a full cross. This means most of the time you will see just round
      stars, and only on the brightest stars will they show weak symetrical
      diffraction spikes that are far more acceptable than asymetric
      blobs achieved with other methods.

      

        

          

            

          
 The
            cables are attached permanently with wire tie wraps so when the
            clamps are loosened the cable comes with it. Then is fast and
            easy re installation!
 
        
      

      

        

          

            

          

            
 The 3d CAD model.
            note the hole in the middle to clear the rivet on the edge of
            the tube which holds the lens cap on.

            
NOTE: You will have
            to tap the two thumbscrew holes in the plastic with a 1/4-20
            tap, and add two nylon clamp bolts. Both items available at any
            ACE hardware. They also have the cable ties used to hold the
            cables to the braces.
          
        
      

      
DOWNLOAD THIS .STL FILE
      HERE


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