Re: [ATM] Figuring Methods

[Kevin MIchael Zabbo <chaosopher23@yahoo.com>]

Compared to a sphere, which is my eventual goal, that
way I know I need to parabolize .0004" of glass away,
I read that the hyperboloid has wider horns than the
paraboloid, making it relatively shallower in the
center than the paraboloid.  It will take time to go
back to spherical and then to paraboloid, but with the
amount of glass going bye-bye, it will take a bit of
time.  f/3.125 is a salad bowl that I could almost use
my laptop's yagi antenna as a secondary.

Kevin

--- Richard <cnc@cncservo.co.uk> wrote:

> Hi Kevin,
> 
> Saturday, April 29, 2006, 6:42:42 PM, you wrote:
> 
> KMZ> I have a
> KMZ> hyperboloid of about 1.7 or so indicating that
> I have
> KMZ> a really huge TDE and I have to dig a hole in
> the
> KMZ> center
> 
> How are you comparing?. To my way of thinking a
> Hyperboloid has
> a deeper centre than a Paraboloid, just as a
> Paraboloid has a
> deeper centre than a Sphere.
> 
> -- 
> 
> Best regards,
>   Richard in the UK
> 
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