Hello!

I have a astigmatism developing in my eyes, -0.50 each eye.
I also use a telescope. I prefer to observe without my glasses on if
possible but this is getting to be a problem.

I do not have any test lenses to try, so I have to ask...

In theory, would it be possible to mount a 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?? Could this lens be placed somewhere in
the barrel of the eyepiece?

(I am sure it would work between the eyepiece and the eye).

Would the distance between the test lens and the eyepiece lenses be critical
or would a centimeter either way be usable?

If this trial lens (-0.50 cyl) would work for one eyepiece of a given focal
length, would work for several eyepices of different focal lengths?

I was thinking of trying some "quality test lenses" but thought I would ask
my question here before I looked into where and how to obtain them.

Many thanks for your thoughts on this.

Waz