Product Description
Sky-Watcher 2" Dielectric 90° Star Diagonal with 1.25" Adaptor
The Sky-Watcher 2" Dielectric 90° Star Diagonal is a premium accessory designed to deliver brighter, higher-contrast views through your telescope. With its high-grade dielectric mirror coatings and solid construction, it’s an excellent upgrade for observers who want to get the very best performance from their optics.
Ideal for refractors, Schmidt-Cassegrain and Maksutov telescopes with a 2" focuser or visual back, this diagonal provides a comfortable 90° viewing position, making it easier to observe objects high in the sky.
Brighter, sharper visual performance
Unlike standard mirror diagonals, the dielectric-coated mirror offers extremely high reflectivity with superb durability. This results in:
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Excellent light transmission
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Increased image brightness
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Improved contrast and clarity
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Long-lasting optical performance
Dual-format versatility
This diagonal includes a 1.25" adaptor, allowing you to use both 2" and 1.25" eyepieces with the same setup — ideal if you have a mixed eyepiece collection.
Key features
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Model: Dielectric Star Diagonal
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Viewing position: 90°
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Format: 2" diagonal with 1.25" adaptor
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Coatings: Premium dielectric, ultra-reflective multi-coating
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Designed to maximise light intensity and deliver bright, high-contrast images
The Sky-Watcher 2" Dielectric 90° Star Diagonal is a high-quality upgrade that enhances visual performance while adding flexibility to your observing setup — a great choice for anyone looking to step up from a standard diagonal.
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