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Celestron 90-degree star diagonal with 1.25-inch barrel, silver metal body

Celestron

Celestron 90 Degree Star Diagonal 1.25

SKU CH-B79Q-H5BBZ

A 90-degree star diagonal for 1.25-inch eyepieces that redirects the light path for comfortable high-angle viewing while preserving bright, high-contrast images

  • Comfortable 90-degree viewing angle reduces neck strain
  • High-quality optics deliver bright, clear, high-contrast images
  • Fits any telescope accepting standard 1.25-inch eyepieces
  • Robust construction ensures long-lasting performance and reliability
  • Right-side-up image orientation aids intuitive sky navigation

Comfortable 90-degree viewing angle

The 90-degree star diagonal diverts the light path so observers can look down into the eyepiece instead of craning their neck when the telescope points near the zenith. This right-angle orientation makes extended sessions significantly more comfortable for both casual and dedicated stargazers.

Bright high-contrast images under sustained use

High-quality optics minimise light loss and maintain sharpness even during long observation periods. The clear aperture preserves maximum transmission so planetary and deep-sky targets remain vivid without the dimming or softness that can appear in lesser diagonals after prolonged aiming at high altitudes.

Upgrades from fixed or lower-quality diagonals

The 1.25-inch barrel fits any telescope accepting standard eyepieces, replacing straight-through viewing or diagonals with inferior coatings. The improvement is most worthwhile for observers who regularly track objects overhead and want to avoid neck strain while retaining an upright, though laterally reversed, image.

Highlights

  • Comfortable 90-degree viewing angle reduces neck strain
  • High-quality optics deliver bright, clear, high-contrast images
  • Fits any telescope accepting standard 1.25-inch eyepieces
  • Robust construction ensures long-lasting performance and reliability
  • Right-side-up image orientation aids intuitive sky navigation

Specifications

No published specifications for this item yet.

Questions about this item

Does the 90-degree angle add any heat or power draw to my telescope setup?

No, the 1.25-inch star diagonal is a passive optical accessory with no electronics, so it adds no heat or power consumption.

What must my telescope already have to accept this 1.25-inch diagonal?

Your telescope needs a standard 1.25-inch focuser or eyepiece holder to fit this diagonal.

Will the image orientation from this 90-degree diagonal match my older finderscope or star chart?

The diagonal delivers a right-side-up but laterally reversed view, which may differ from a straight-through finder or printed chart.

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