Astatic newton cell

[Hakann 2]

I have a Quartz 18 f/4 from Carl Zambuto I plan a std 18 points classic cell and the triangles will be in carbon fiber.

It will be a low number nm RMS but I don't like what I saw in others 18 pts cell where 1 triangle can be loose or bend harder into the glass.

I will use the flexuare edge support, so is 120 degree best or 90 degree?

So 3 triangles will be like a hard dots  (and where I plan collimate cell at ) and the other 3 triangles will be astatic.

I read on Frederic Gea's web, that it was 2 versions (maybe also more ) of this system.

So question will be, how will I solve the movement the best way.

Bearings and a piston or the bronze plate and the 'chrysocal plate'? (or another good idea?)

If I read your text it has been some upgrades - so what is the best way solve this?

I also did note it was said the plate and 2 L-irons there is no 'piston', but on this picture on the web it is a 'piston' even at the chrysocal design (where pin goes up to the triangle)

I would appreciate if someone her familiar with this systems can help me with some advise here!

[Alain MOREAU 7 318]

Hello Hakann,

Welcome to Astrosurf.

May be you could post your question on : Astronomie > Astronomie Pratique.

A best place to receive somme answers