6" F5 Newtonian telescope

Open source 6" Newtonian telescope

This telescope is mostly 3D Printed. It features a 6" Mirror and a vixen style mount that allows you to mount it on almost any existing mount. The primary mirror holder as well as the secondary mirror holder are both 3D printed, and fully adjustable. The main tube is a ~1M section of 8" PVC drain pipe. All the 3D printed parts were printed at 15% infill, 0.4mm layer height with a 0.6mm nozzle on a Ender 3, primarily for speed.

List of components:

Primary Mirror - I used a 6" 750mm from Aliexpress

Secondary mirror - 45mm mirror, glued onto the secondary mirror holder. Evostick impact adhesive worked very well.

Rack and Pinion - I used a Meade 07345 however any other one should work fine. There are also 3D printed designs online.

Main tube - ~1M length of 8" PVC Drain pipe. I spray painted the inside with matte black paint.

3D printed Components:

Primary Mirror Holder

Primary Mirror Tube Mount

Primary Mirror Clips x3

Adjuster knob x3

Secondary Mirror Holder

Secondary Mirror Vane Mount

Tube brace upper x2

Tube brace lower x2

Handle (optional)

Meade Finderscope adapter (optional) - fits meade 8x50mm finderscope adapter

Hardware:

A pack of M6 Nuts and washers

3x M6 100mm Coach bolts, M6 threaded rod also works just fine.

3X Springs, they need to have a internal diameter of at least 6.2mm so they fit over a M6 thread. I used springs from a Hilka 200pk assortment

3x M6x50mm (socket cap head) bolts. The length can vary a bit depending on your springs so getting an assortment of metric bolts may be a good idea.

3x M4x20mm bolts, preferably countersunk. Again the length may vary depending on your mirror thickness, so getting an assortment of metric bolts may be a good idea.

4x M4x~40 bolts, used in the secondary mirror mount.

Printing info:

All of the components were printed with eSun matte black PLA, on an Ender 3, however most filaments should work just fine. I used a 0.6mm nozzle at 0.44mm layer

CAD Files

The STEP files are available as well as the STL files. The design is also free for remixing on Onshape. I have used variable tables so that the dimensions can be easily changed to suit your needs, eg using a 8" Mirror instead.

https://cad.onshape.com/documents/0abb62a35b992c1ce160fe1f/w/e32492d8b36c852e50ae356f/e/025d8034f0b37bea9582ff6e?renderMode=0&uiState=63c2c6bc88221e5f763d6ead

Contact me

If you have any issues or suggestions please feel free to contact me at gaowaylon@gmail.com