I wouldn't mind building a 10" f3.8 Newt. but something special -
with perhaps a honeycomb mirror.
Have a look at this web page:
http://www.mdpub.com/scopeworks/hexagons/index.html
I admire Michael Davis for having a go.
The honeycomb design reduces weight & makes it easier to stop boundary
layer temperature differences from distorting the image.
Anthony Wesley goes to great trouble to get the temperatures the same:
http://www.acquerra.com.au/astro/cooling/ballarat/
I also remember that Anthony tried a honeycomb mirror but ran into problems with it's construction.
Newport says they make them:
http://www.newportglass.com/afuscelr.htm
but there aren't any in a 10" size that I would like.
Questions:
what do you all think of honeycomb mirrors?
Who makes them for sale?
I wonder if anyone can make one out of zero expansion glass?
cheers
Allan