ATM Stepper Motor

[cshaw@ghg.net (Charles W. Shaw)]

>From: JHM.van.Gastel@psy.vu.nl
>A shop here in Amsterdam sells two kinds of 4-fase steppermotors: 350 milli-
>amperes and 800 milli-amperes. The last one is the strongest, but also the
>most expensive. Is it, for a poncet mount (for a 12" dob), nessesary to use
>the strongest one or is the smaller strong enough?

Jan,

The 350 ma motor should be fine considering that you will need to gear the
motor down quite a bit to allow at least 40 steps/sec.  You need this rate
to make the steps small and fast enough to not see them in the eyepiece at
high power..

Regards,

Chuck



Chuck Shaw
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