Re: [ATM] Flat grinding the back of the primary mirror

[Richard <cnc@cncservo.co.uk>]

Hi Mike,

Wednesday, December 28, 2005, 8:20:13 PM, you wrote:

ML> Again, understand that doing this is purely for mechanical reasons, it
ML> is not necessary optically......

I don't know... what about when you are polishing and figuring?.
You really want the mirror hels ad well then as you do when it
is in its cell, and you aren't going to achieve that with lumps
and bumps on the back surface. In fact, you will get localised
stress that I think will affect it.

-- 

Best regards,
  Richard in the UK

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