Re: optician's trial lens for telescope use?

waz writes:

> In theory, would it be possible to mount an optician's test lens
> (let's say to correct for -0.50 cylinder) BETWEEN the telescope
> eyepiece and the objective and have it correct the view for me?

No, the correction must be applied as close to your astigmatic lens (which
is to say, your cornea) as possible.

May I suggest RGP contact lenses? That yields the best possible
correction.
.