Wanted 10" f4 mirror high quality

[alpal]

I am building a carbon fiber 10" f4 Newt.
A medium quality mirror is on the way but I would like to
eventually install a high quality mirror.

f3.8 would also be ok.

[glend]

Visual or imaging? There is a difference in quality requirement.

[alpal]

Imaging.

[ariefm71]

How so? visual requires a better mirror?

[alpal]

I want pinpoint stars when using an eyepiece & only then would I
bother attaching a camera to it.

Something that is tested to 1/8th wave pv on an interferometer would be a nice start.
If it was a cellular or honeycomb mirror then all the better.
I want to see what's out there to buy.

cheers
Allan

[alpal]

Hasn't anyone got a good 10" f4 mirror?