Re: ATM polishing advice sought

[Scott Rychnovsky <srychnov@chem.ps.uci.edu>]

Frank,

I don't worry about the figure until it is polished out.  Just get a good
polish with the normal strokes (1/3 COC).  I usually do most of the
polishing TOT, but add a bit of MOT to balance it out, particularly if the
center is not polishing as quickly. Lots of force is good at this stage.

Once it is polished, then worry about the figure.

Scott


>
>I have three hours (actual lapsed time) of strictly MOT polishing on a 16"
>mirror with (what I'm sure) is a well pressed lap.  Today I took a look at
>the figure just to get a baseline using a 100 lpi ronchi grating, 5 lines
>showing across the aperture.  The mirror has been in the test stand 24 hours.
>

--
Scott Rychnovsky
srychnov@chem.ps.uci.edu