Eyepiece Explore Scientific 100° 14 mm 2" for telescopes — 14 mm focal length, 2-inch barrel, 100° apparent field

Explore Scientific 100° 14 mm 2" eyepiece is a wide-field ocular for telescopes with a 14 mm focal length and a 2-inch barrel. It delivers an apparent field of view of 100°, offering expansive views that enhance visual observing sessions. The eyepiece is compatible with standard 2" focuser holders and is suitable for a range of instruments used by amateur and advanced astronomers. Its optical design balances a wide field with comfortable eye relief to allow immersive panoramas of star fields, nebulae and large deep-sky objects.

Advantages

The 100° apparent field provides a broad sky view that reduces the need for frequent re-centering and makes it easier to appreciate extended objects. The 14 mm focal length yields moderate to high magnification depending on telescope focal length, useful for planetary detail and resolving structure in nebulae and star clusters. The 2" barrel ensures stable mounting in common focusers and allows full use of the eyepiece field without vignetting in many telescopes. The eyepiece construction and optical coatings are designed to deliver good contrast and minimize internal reflections under typical observing conditions.

Suitable for

• Wide-field visual observation of deep-sky objects and star fields
• Planetary and lunar observing at moderate to high magnification
• Use with telescopes that accept 2" eyepieces
• Public outreach and star party sessions where expansive views are desired

Key specifications

• Focal length: 14 mm
• Apparent field of view: 100°
• Barrel diameter: 2 inches
• Designed for visual observation through telescopes

How to use

Insert the eyepiece into a compatible 2" focuser and secure it with the focuser thumbscrews. Start observing with the eyepiece in a stable, well-collimated telescope and allow the optics to reach thermal equilibrium for best performance. For initial alignment, use lower magnification or a finder scope to place the target in the center of the field, then refine focus using the telescope focuser. Adjust eye position to achieve the full 100° apparent field while maintaining comfortable eye relief; eyeglass wearers may need to step back slightly to see the entire field.

Usage recommendations

For wide-field targets and comfortable viewing, pair this 14 mm eyepiece with telescopes of medium to long focal length where the resulting magnification provides a balance between detail and field size. Use with high-quality mounts and accurate pointing when observing small or high-contrast targets to take advantage of the eyepiece’s resolving potential.