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Until May 2nd, 2025, orders under US$800 will not incur any duties or taxes upon delivery. Please note that orders under US$800 crossing the Canada-USA border after this date will be subject to duties. They will be billed by the carrier, and you will be responsible to pay them. Prioritize ordering items that are in stock!
Until May 2nd, 2025, orders under US$800 will not incur any duties or taxes upon delivery. Please note that orders under US$800 crossing the Canada-USA border after this date will be subject to duties. They will be billed by the carrier, and you will be responsible to pay them. Prioritize ordering items that are in stock!

The 2" 99% Dielectric Twist-Lock Diagonal is an essential upgrade for astronomers seeking the best in optical performance and convenience. This premium diagonal features 99% dielectric coatings, ensuring exceptional light transmission and durability. With dielectric coatings, you gain a brighter, sharper image with enhanced contrast, as the high reflectivity minimizes light loss across the optical path – perfect for observing fine planetary details, star clusters, and deep-sky objects.

Equipped with an innovative twist-lock mechanism, this diagonal provides a secure, centered hold for your eyepieces and accessories. Simply twist to lock your eyepiece in place – no more fumbling with thumbscrews or misalignments. This mechanism not only protects your equipment but also ensures optimal alignment for the best possible image quality, making it a convenient and reliable addition to your telescope setup.

The 2” format is compatible with standard 2” focusers, and its wide clear aperture is designed to support even large, wide-field eyepieces without vignetting. This twist-lock diagonal is built to last, with an anodized aluminum body that’s as durable as it is lightweight.

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