How tight should my primary mirror retaining clips be? --- I wish I asked and found this answer before I had to learn it the hard way. I hope this graphic I
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The Newtonian telescope has flat secondary mirror and a paraboloid or spherical primary mirror | Webel IT Australia
Ronchigrams for a primary mirror of a Newtonian telescope (parabolic... | Download Scientific Diagram
UV Collimator schematic, including made in-house Newtonian telescope. | Download Scientific Diagram