I tried the WO binoviewer last night. Mixed results.
1. To focus the Meade F4 SN10, it required not only the supplied WO X 1.6 corrector but also a long 2X Barlow, both together. And then it was nearly at the very end of focuser travel with a 20mm eyepiece, effectively a 3.2 X, SN10 focal length 1012mm.
This gave a narrow filed of view which delets the advantage of an F4 10" Newtonian for nebula etc.
But it will focus...
An extender might help
(By the way, a smaller Newtonian (150mm X 1400mm) will focus with the WO 1.6X corrector, but not at all without it. That one has a Barlow in the focusser.)
2. Any comments or comparisons with the Burgess MK24 ?
Burgess has a wider clear aperture, the OCS supplied is 2.3X..not as bad a X 3.2, .....But will it focus on the F4 SN10"?
Would the supplied extension tube help?
3. The Siebert MultiMag OCS option I have in mind would be in addition to one of the above BVs.
Sieberts suggested "Ad#2 either the standard or multi-mag OCA. (SBW-1.25x for $99 or SBW-1.25x-3.5x for $134) This should work with both 2" and 1.25" setups with a slight change in configurations. "
4. However I do not know whether
all those varieties of magnification would work with a Newtonian F4, using either WO or Burgess BV.
5. Given that the MK24 Burgess pack costs an extra $160, does anyone know if the performance is better?
Let's see who has some ideas.
Leo
