Premium 90mm dual separation lenses designed for refractive astronomical telescopes, enhancing your stargazing experience. Available in different focal lengths 500mm, 650mm, 900mm and 1000mm, offering versatility for different astronomical observations. Featuring coatings (green and blue film) that improve light transmission and image clarity, ensuring stunning visuals. Precision engineered with tolerances for diameter, center thickness and focal length, ensuring optimal performance and image quality. Ideal for DIY telescope assembly, these lenses are perfect for objective and collimation applications, making them a must-have for astronomy enthusiasts.
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