Posts Made By: Jim Kaminski

When looking into the eyepiece at the enlongated image, be sure to turn (rotate) your head to see if your eyeball lens is adding to the problem.

Also, loosen the setscrew and turn the eyepiece in the diagonal to see if it adds to the problem.

Anything in the optics path, from objective to diagonal to eyepiece to eyeball can contribute to astigmatism.

Thank you.

Pictures, with a good explanation, are always appreciated.

I have only a C-8, but the techniques are equally useful.

There are many opinions on proper cleaning methods, and I enjoy reading and comparing them so I can use what suits my needs best.

Thanks again!