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Re: [ATM] Field derotator
The best field derotator I've ever met is an
equatorial mount. One motor to drive everything, and
the field stays stuck.
Kevin
--- Jim Burrows <burrjaw@earthlink.net> wrote:
> At 2005-03-29 09:18 -0500, Jonathan Lavoie wrote:
>
> >I searched on making a field derotator but found
> not much information.
> >Can you point me to webpages on the subject if
> there is? This is for my
> >16" RC under construction with Mel's stepper drive.
>
> Meade used to sell a field derotator for LX200s
> being used with altaz
> mounts (maybe they still do). The feeling I got
> from comments on the Meade
> user group email list was that they didn't work very
> well, and it was much
> better to go with an equatorial mount. I'd say it
> would be best to go with
> a wedge, considering all the work involved in a big
> RC.
>
> Hey, ATMs! Meade is diving into the RC sea along
> with Hubble, Keck, etc. -
> big article in the May S&T.
>
> -- Jim Burrows
> -- mailto://burrjaw@earthlink.net
> -- http://home.earthlink.net/~burrjaw
> -- Seattle N47.4723 W122.3662 (WGS84)
>
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