Eyepiece Tele Vue Delos 14 mm 1.25" – wide-field astronomical eyepiece, 14mm focal length, 1.25-inch barrel

The Tele Vue Delos 14 mm 1.25" eyepiece is a wide-field astronomical eyepiece with a 14 mm focal length and a standard 1.25-inch barrel. It is built for visual observation through compatible telescopes and delivers a balance of apparent field of view and eye relief suitable for extended viewing sessions. The eyepiece is intended for higher-magnification planetary and detailed deep-sky inspection when installed in a telescope focuser or eyepiece holder that accepts 1.25-inch barrels.

Advantages

The Delos 14 mm eyepiece combines a relatively wide apparent field with comfortable eye relief, allowing observers to maintain good field coverage without frequent repositioning. Optical design minimizes aberrations and provides defined images across the field for both bright and faint targets. Its 1.25-inch barrel size ensures compatibility with a broad range of telescopes and accessories commonly used in visual astronomy.

Suitable for

• Planetary observation at medium to high magnification
• Lunar surface detail studies and close views of bright solar system objects (with appropriate solar filters)
• Deep-sky object inspection requiring moderate focal magnification
• Field use in telescopes, including refractors, reflectors, and compound designs that accept 1.25-inch eyepieces

When it may not be suitable

This eyepiece may not be ideal for users who require the widest possible true field of view for low-power sweeping of large nebulae and star fields; ultra-wide or low-power eyepieces are better suited for that purpose. It is also not compatible with focusers or accessories that accept only 2-inch barrels without an adapter.

Key specifications

• Focal length: 14 mm
• Barrel size: 1.25 inches
• Optical design: wide-field eyepiece optimized for visual use
• Typical use: medium to high magnification visual observing

How to use

Insert the 1.25-inch barrel into a compatible telescope focuser or eyepiece holder and secure it with the focuser thumbscrew or locking mechanism. Focus the telescope on the target and adjust fine focus until the image appears sharp. For best results, use a stable mount and appropriate telescope alignment. When switching between eyepieces, allow time for the observer's eye to adapt and adjust eye relief to center the view. For solar observing, always use certified solar filters and follow safety procedures.

What to consider before purchase

• Confirm your telescope accepts 1.25-inch eyepieces or you have the correct adapter
• Match eyepiece focal length to desired magnification with your telescope focal length
• Consider eye relief requirements if you wear eyeglasses during observation
• Check compatibility with existing accessories such as diagonals and extension tubes

Usage recommendations

Use the Delos 14 mm eyepiece for targeted, medium- to high-magnification observing sessions—planetary, lunar, and detailed deep-sky views—mounted on a stable, well-collimated telescope and combined with suitable accessories for comfort and safety.