Cloudy Nights 8 inch F/7 group build

I started a thread on Cloudy Nights for a group build of an 8 inch F/7 Chief. I have had a custom lens make to mate with a Newport Optics COTS lens so that all the optics for this design can be bought and assembled into an unobstructed telescope. The 8 inch F/7 is a standard primary listed on Discovery’s web site. The concave corrector I am having made, the convex corrector is a Newport optics KPX205 lens and is listed for $75. Then it uses a 2 inch secondary mirror and a standard 2.14 inch mirror will work fine from a number of suppliers. Below is the optical prescription in Zemax for the 90 degree layout although other layout are possible

Here is a closeup of the correctors with coordinates taken from the Zemax layout.

Here is a link to CAD files and Zemax files.







http://8 inch F7 correctors.png


3 thoughts on “Cloudy Nights 8 inch F/7 group build

  1. The CAD file links are missing the server name, so consequently don’t work… Is there another way to obtain these files? Thanks!


  2. With Ed’s consent, I have placed all the files (mentioned above) on Thingiverse and are now available for download. Here’s a link:

    I am not a 3D artist/engineer/designer, but will attempt to add a design file for the corrector lens cell, which could then be printed. When finished it will also be available from Thingiverse at the above stated link.



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