Olympus GSWH 10x high resolution eyepiece (25mm FL and 30mm barrel)
Introduction: After many years and now focused on CCD observations, I plan to sell my personal collection of rare and high resolution eyepieces. Most come from microscope world and are tested to perform very good to excellent as "relay eyepieces" (eyepiece projection technique), but most work visually great too. These belong to *the best* after testing indoors with Imatest software and controlled enviroment with a modern Catadioptric telescope design. You are garanteed these can perform great as planetary/lunar eyepieces, even exceeding some top planetary eyepieces.You can see the report here: https://www.marronyazul.es/azul/how.htm (click on the PDF of the test entitled "A new approach for testing optical trains").
Description: Well known Olympus GSWH model, a jewel in the sky. Known since a long time ago as an excellent planetary performer due to its "wide" angle feature, low scatter and velvet views (around 50ยบ FOV). This is a 30mm barrel eyepiece which needs a 30mm to 1,25" adapter to use on telescopes (I sell them in my shop). LENSES are absolutely nice with no haze or scratches. It may show some marks in BODY. Includes convenient rubber eyecap to avoid stray light coming into your observing experience.