On Sat, 18 Sep 2004 20:16:05 GMT, Chris L Peterson
wrote:

Yes. Manual guiding involves putting a piggyback telescope onto your imaging
scope and keeping a star centered on the reticle of a high power eyepiece...

I should have mentioned the other approach to manual guiding, an off-axis
guider. This is a unit that sits in the optical path of your scope, in front of
the camera, and picks off part of the field outside the camera FOV and directs
it to a reticle eyepiece. This can be more robust than a piggyback scope because
you are guiding on the same optics you are imaging with.

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com