Kevin--

Field rotation would fairly quickly creep in. Doc's web site has a great
discussion on this subject--I got convinced to go with a wedge rather than a field
derotator ( which is used on alti-az scopes ).

Clear skies, Andy


> A question for the thoughtful & knowlegeable members in this area:
>
> I was thinking about a comment I read in a recent article that said most
> modern observatory scopes are alt-az mounted vs. equatorially. LX200 in alt-
> az is steadier and easier as we know.
>
> Now the question:
>
> Understanding that PEC isn't available in alt-az for some reason, if you
> routinely used a 201xt with a guidescope in alt-az, how would this compare
> with a wedge mounted arrangement with PEC activated and no auto guiding? I
> suspect one would see superior results with 201xt/guidescope / wedge/polar but
> what about this 'in-between' solution?
>
> Thoughts appreciated.
> Kevin

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