Quillon Fenwick 14 mm Plössl eyepiece, with hard case

Specifications

Description

The Fenwick 14 mm is a four-element Plössl eyepiece with a 50-degree apparent field and a 1.25 in barrel. It falls in the middle of the focal range, where it covers a wide set of deep-sky objects and planetary detail in most amateur telescopes. Once a low-power wide-field eyepiece is in place, this model can serve as a general-purpose eyepiece.

A 14 mm eyepiece gives moderate magnification: 71x in a 1,000 mm refractor, 86x in a 1,200 mm Dobsonian, and 143x in a 2,000 mm Schmidt-Cassegrain. In the 1,200 mm telescope, the 12.2 mm field stop sets a true field of about 0.58 degrees, enough to frame a globular cluster such as M13 with room around the edges. At these magnifications, your telescope's tracking and the steadiness of the air will affect the image more than they do at lower power.

The Plössl design uses two pairs of cemented lenses facing each other. It gives sharp stars across most of the field in telescopes slower than about f/6, with some softening at the edge in faster reflectors. All lens surfaces are fully multi-coated, and the barrel interior is blackened to reduce internal reflections that lower contrast on bright targets.

With 16 mm of eye relief, the Fenwick 14 mm suits many observers who wear glasses. Fold the rubber eyecup down to make room for eyeglasses, or fold it up to block stray light. The barrel is threaded for standard 1.25 in filters, so you can add a moon filter or a light-pollution filter without an adapter.

About this configuration

This listing covers one configuration of the Quillon Fenwick 14 mm Plössl eyepiece, defined by its case, eyecup, finish, and edition year. The hard foam-lined case protects the eyepiece from knocks during travel and stacks neatly with other cases. A hard case keeps the eyepiece safe in a busy accessory box at a star party or an outreach event. The winged eyeguard wraps around the side of your eye and blocks light from nearby houses and streetlights.

A color ring near the top of the body marks the focal length, which helps when you swap eyepieces in the dark. This is the 2023 edition of the Fenwick line, the earliest version that is still listed in the catalog. The true field in your telescope is roughly the apparent field divided by the magnification you reach with this eyepiece.

What's in the box

• Eyepiece with fold-down rubber eyecup
• Top and bottom dust caps
• Padded storage pouch
• Hard foam-lined case
• Winged rubber eyeguard

Compatibility notes

• Fits any 1.25 in focuser, diagonal, or Barlow lens.
• The barrel accepts standard 1.25 in filters (M28.5 x 0.6 thread).
• Sharp across most of the field at f/6 and slower; softer at the edge in faster reflectors.