Re: Use of stereo eyepieces in compound microscope???

"BOB MARABLE" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I'm just a hobbiest at microscopy, with a very limited "allowance" for
> equipment (hope my wife doesn't read this!) Here's my problem--I have
> a Zeiss Axiostar 'scope, with infinity tube correction, and which
> takes the larger-size 30mm barrel eyepieces.  New eyepieces of this
> size are very expensive, and I've found only a meager market for used
> items for this series--however, I think many stereo 'scopes use 30mm
> eyepieces, and there's substantial availability of used and
> alternative-vendor items for these 'scopes.  What are the
> issues/ramifications of using "stereo scope" eyepieces in a compound,
> infinity system?? I appreciate all input!!
> Bob Marable

I wouldn't recommend using a stereo eyepiece at all.  The first point is
that your Zeiss is infinity corrected, the beam path from the objective to
the eyepiece is parallel.  This is not the case with some stereos so the
microscope will not produce the correct power and corrections such as
parfocality.  It' just better to find some eyepieces designed for this
instrument.  A minor point,sleeves to adapt regular eyepieces to larger size
openings can be had for free or very little, Olympus among others gave them
away.  Oh, I have never heard of a "semi-apo".  Maybe I'm confused.

Kevin