Re: ATM atm ground- to deep

[Mel Bartels <mbartels@efn.org>]

If the mirror is too deep, flip the tool and mirror over, and use tool
on top with long wide aggressive strokes.  This will bring down the edge
of the mirror, lessening the radius of curvature.  This is very
effective, so measure often.

--
Clear skies, Mel Bartels // Programmer/Analyst, amateur astronomer
Springfield, Oregon,     // USA homepage: http://www.efn.org/~mbartels
mailto:mbartels@efn.org  // atm, atm-digest list-owner
Motorize A Dob: http://zebu.uoregon.edu/~mbartels/altaz/altaz.html