Precision Dob mounts, was: Re: ATM A cage as secondary holder

[Marinus Lugt <Marinus.Lugt@dss.dornier.dasa.de>]

Mel Bartels wrote:

> Dob builders are going to have to switch gears because precision work
> and adjustable setups are not a part of our consciousness quite yet, but
> we are getting there.

As Andy Saulietis wrote, this is only necessary for imaging.
Photography can be done with dobs, but CCD is more of a natural to dobs.
When using a CCD, it might also be possible to use a conventional dob mount
and fine point the scope using the actual image from the CCD and compare
it against a data-base like "Real-Sky". This kind of feed-back loop should
allow easy (but sturdy) mounts and high accurancy pointing.

Rien