Mr Gray, you haven't specified the type of mount your SCT 10 is on.
So can't advise for you particular case. However in general terms the
answer is "no". The tracking rate is determined by the Earth's
rotation rate. Various mounts allow you to set tracking correction
rates to less than 0.5% (the G-11, for example).

Serena

--- In ccdimaging2@yahoogroups.com, mrzeta7 <no_reply@y...> wrote:
> I have an SCT 10, use ST237, and F6.3 focal reducer (high power).
The
> tracking at +/- 0.5% adjustment seems to be just too slow or just
too
> fast. Is there anyway to divide the RA motor signal with an
external
> circuit to improve tracking resolution.
>
> Those interested can check out my ET/Astronomy website at:
>
> http://home.earthlink.net/~mrzeta/amseti.html
>
> Thanks !
>
> Mr Gray