Re: ATM Altitude Bearing Angle

[Mel Bartels <mbartels@efn.org>]

The friction is more if you up the angle of the altitude bearings -
changes as sin of the angle.  So bearing points at 45 degrees will have
1.4 times friction than at 30 degrees.  Given an altitude bearing and
scope weight and moment arm of the eyepiece, you can adjust the bearing
point angle to achieve the friction of movement desired at the eyepiece.

--
Clear skies, Mel Bartels    Programmer/Analyst, amateur astronomer
Eugene, 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