Don't forget too that Newts are already APO's and long focus versions F8 to
F10 don't have coma problems like the shorties do. Last its much easier to get
a very high corrected parabola with a longer focus version as well.
Advantage of the APO is no secondary to deal with can be a more compact tube
and you can use really low powers without the secondary causing problems.
That Stellarvue SV115 at F7 with the blue anodized tube is got me interested.
Clear Skies
Dwight L Bogan
>Of course a moderate f/ratio (f8 to f10) 6 to 7" Newt might >just make you
>think it's a refractor. :) (A curved spider helps .. at >least that's what I
>hear<g>)
>Best,
>--Mike Spooner
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