Various companies such as Celestron and Orion (USA) sell versions of
these mounts. They are all produced by Synta. By adding on the motor
and hand controller accessories that are available for these mounts,
long-exposure manually-guided astrophotography can be performed.
However, these hand controllers do not include autoguider ports so
that computer driven autoguiding can be utilized. There is no
standardized autoguider port that is common to all manufacturers,
but the socalled ST4 port is a very common format used on most scopes.
If you own one of these styles mounts, and are comfortable with opening up the
handcontroller box and making some simple modifications, then read on! If you are not
comfortable doing this, maybe you have a friend that is. Webcam autoguiding is an
inexpensive way to eliminate the monotony of manually autoguiding.
Read through these instruction entirely prior to beginning the modification. Make sure
you understand what must be done, and are completely comfortable with doing it.
Once the modification to the hand controller has been performed, you will
need the Shoestring GPINT-PT Auto-Guider Kit or
the Shoestring GPUSB Auto-Guider Kit to connect
the computer to the telescope mount.
Modified hand controller.