منشور Apertura بزاوية 45 درجة قطري 1.25" - A-P45

The 45-degree angle makes a huge difference for my back when observing objects high in the sky, and the prism keeps the image nice and bright. It slides into the focuser smoothly without any slop, so I'm pretty satisfied with this upgrade.

Finally got this diagonal for my refractor and the views are noticeably brighter than my previous mirror diagonal. The prism holds alignment perfectly with no slippage in the focuser. Exactly what I needed for comfortable daytime and evening viewing.

I've been using this diagonal for a few weeks now, and the viewing angle is much more comfortable for my neck than a straight-through setup. The prism seems to deliver crisp, clear images without any noticeable light loss in my refractor.