Hi, this telescope is adapted to accessories (eyepieces, diagonal) in the size of 0.96''. If you have 1.25'' eypieces, look for a suitable adapter that allows a 1.25-0.96'' reduction. The original set included the 90o diagonal, but you can use any other 0.96 '' diagonal - buying, for example, a cheap, old copy of any telescope from those years as a source of 0.96'' accessories, or even buying a brand new 0,96'' diagonal, because they are still produced in this size today.
Don't be afraid to take your eyepieces apart into single lenses and clean the optics properly. Read about cleaning the optics first and complete the necessary equipment and cleaning agents - it is neither difficult nor expensive. The most important thing is not to confuse the order and direction of the lenses - with multi-element constructions it becomes a bit of a challenge, so it is absolutely necessary to photograph each stage.
Edited by LukaszLu, 23 December 2020 - 06:46 AM.