From: "Aditya Munshi" 
To: 
Reply-To: "Aditya Munshi" 


Hi everyone,


I am almost done correcting my 8" f/7 to a sphere. There is almost
nothing left if the TUE only a central hole persists ? What I would like to
know is how do I measure the magnitude of the central depression and how
much can I correct in the final figuring ? Would it be advisable to correct
the surface to a sphere now or to merge the hole into the parabola itself ?

I need your thoughts on this

Thanks

Aditya

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