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Cylindrical silver telescope eyepiece with black rubber grip and 1.25 inch barrel

Celestron

Celestron 8-24mm 1.25" Zoom Eyepiece

SKU CH-75RV-TJSGS

A 1.25" zoom eyepiece covering 8-24mm magnification with a 60-degree field at 24mm and 40-degrees at 8mm, featuring fully multi-coated optics for bright, high-contrast views

  • TypeTelescopes
  • Zoom to high power without swapping eyepieces
  • Wide 60-degree field at 24 mm finds objects fast
  • 40-degree view at 8 mm keeps detail immersive
  • Fully multi-coated optics deliver bright, high-contrast images
  • 25-inch barrel fits standard focusers with textured grip

Zoom range and fit

The Celestron 8-24mm zoom eyepiece covers a continuous magnification range with a simple twist of the barrel. It slides into any 1.25" drawtube or accessory, making it compatible with a wide range of telescopes. The design removes the need to swap individual eyepieces during an observing session. It suits astronomers who want flexible magnification without changing hardware.

Optical coatings and viewing angles

Fully multi-coated anti-reflection optics deliver bright, high-contrast images with accurate colour rendition across the zoom range. At the 24mm setting the apparent field of view reaches 60 degrees for wide-field scanning. When zoomed to 8mm the field remains 40 degrees, preserving a generous window at high power. The coatings maintain image quality throughout the transition.

Handling features

A slip-resistant textured collar provides secure grip during adjustments, especially in cold or damp conditions. The rotating zoom mechanism operates smoothly to change magnification without removing the eyepiece. No additional filters or accessories are required for basic operation. The durable construction withstands regular field use.

Highlights

  • Zoom to high power without swapping eyepieces
  • Wide 60-degree field at 24 mm finds objects fast
  • 40-degree view at 8 mm keeps detail immersive
  • Fully multi-coated optics deliver bright, high-contrast images
  • 25-inch barrel fits standard focusers with textured grip

Specifications

BrandCELESTRON
TypeTelescopes

Questions about this item

How do I install the 1.25" zoom eyepiece and what step do people often miss?

Insert the eyepiece into any 1.25" drawtube or accessory barrel until it seats fully, then tighten the thumbscrew; the step people miss is confirming the textured collar is locked so the eyepiece cannot rotate or slip out during use.

What maintenance or replacement will this eyepiece need over time?

Clean the fully multi-coated lenses only with a soft optics brush or lint-free cloth and approved solution; the coatings are durable but can be scratched if wiped while gritty, and the sliding zoom mechanism needs no lubrication — if it ever binds, the eyepiece must be replaced.

What is the first limit I will hit during a long observing session with this zoom?

At the 8 mm high-magnification setting the apparent field narrows to 40°, so eye relief becomes the limiting factor — you must keep your eye precisely centred to see the full field, which is harder to sustain than at the 24 mm, 60° setting.

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