diffractionrings
New member
I just got a C90 (older style, black metal body, front plastic focus ring, no special coatings, in quite good shape) for $35.00 at a rummage sale. It has an Olympus microscope eyepiece (!!, labeled "GWH10x 23", and uses a spacer sleeve to fit well into the mirror diagonal) that gives quite good images, as good or better than good, regular, non-mirror spotting scopes I have looked through (but not as good as a Questar!).
As the mirror diagonal has an inside diameter of 1.25", I am guessing it would be compatible with any eyepiece of this diameter.
I am looking for a good fixed power eyepiece for terrestrial use that would yield somewhere around 25x to 45x, but as the scope is not the coated model, and I only plan on using it for informal astronomy with my young daughters, don't want to get an eyepiece beyond the capability of the mirror.
Any recommendations? Is the eyepiece I am using not to be appreciably improved upon by a different one? Thanks!
As the mirror diagonal has an inside diameter of 1.25", I am guessing it would be compatible with any eyepiece of this diameter.
I am looking for a good fixed power eyepiece for terrestrial use that would yield somewhere around 25x to 45x, but as the scope is not the coated model, and I only plan on using it for informal astronomy with my young daughters, don't want to get an eyepiece beyond the capability of the mirror.
Any recommendations? Is the eyepiece I am using not to be appreciably improved upon by a different one? Thanks!