At 11:07 PM -0400 6/28/99, Carl wrote:
>I have read (and reread) Doc G's site. I am interested in the best
>way to visually adapt my 12" to F6.3, while avoiding vignetting.
>
>Possible answers:
>
>1. Buy Meade or Celestron F6.3 focal reducer and vignette above 32
>mm or so, thus losing some wide field. By the way, my lowest power
>eyepieces are 2" Panoptic 35 mm and a generic 2" 62 mm.

A 35mm Panoptic will vignette badly with a 12" LX200 and a Celestron
f6.3 focal reducer. So much so that I never use mine.

>2. Lumicon Giant Easy Guider - I am now limited by the Meade 2"
>diagonal, not by the visual back supplied with the telescope, right?

Right. And as I understand it you can fiddle with the GEG to get
various f ratios.

>3. Jim's mobile 2" motofocuser - again I'm limited by the 2" Meade
>diagonal - ID is several mm under 2"

This doesn't get you to f6.3 but it is a huge improvement over the
meade focuser.

Bill Arnett
http://www.seds.org/billa/
"Science is a way of trying not to fool yourself." -- Richard Feynman

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