Eyepiece Sky-Watcher WA-66 15mm 66° 1.25″

Sky-Watcher WA-66 15mm 66° 1.25″ eyepiece

If you are looking for an eyepiece that gives you a genuinely wide view of the sky without spending a lot of money, the Sky-Watcher WA-66 15mm wide-angle eyepiece is a great option. With a 66° apparent field of view, it belongs to the category of wide-angle eyepieces for astronomers who want easy object finding, comfortable observing sessions and a reasonable price. Simply put - this eyepiece offers an excellent balance of performance and value.

Optics and image quality

The eyepiece uses a 5-element optical design with fully multi-coated surfaces on all glass elements. In practice, this means better light transmission, higher contrast and fewer unwanted reflections or ghost images when observing bright objects such as the Moon or planets.

Image quality is comparable to well-established Plossl SWA 58° eyepieces, while the 8° wider field of view of the WA-66 gives it a clear advantage over popular Erfle designs - and this is achieved while maintaining good edge correction. The eyepiece works well with telescopes down to f/6, where it delivers surprisingly good results even at the edges of the field.

Build quality and comfort

The eyepiece body is fully made of metal, which ensures durability and precise tolerances for stable fitting in focusers. The eyecup is equipped with a fold-down rubber ring, so observers who wear glasses can easily adjust the eye relief to a comfortable position without removing their glasses.

Comfortable eye relief is one of the key factors for long and relaxed observing sessions - and the WA-66 does not disappoint in this regard. The standard 1.25″ barrel includes a filter thread, so any 1.25″ filter can be easily attached - including Moon filters, color filters or UHC nebula filters.

Who is this eyepiece best suited for?

The Sky-Watcher WA-66 15mm is an ideal choice in two main situations:

• Beginners in astronomy who appreciate a wide field of view when searching for and centering objects in the sky.
• More experienced observers who want to add a reliable and affordable 15mm focal length eyepiece to their collection.

This eyepiece also works very well as an upgrade to the standard eyepieces that come included with telescopes, which often have a limited field of view and lower overall quality.

Technical specifications

Summary

The Sky-Watcher WA-66 15mm eyepiece is a practical and capable choice for anyone who wants to observe the night sky with comfort, a wide field of view and without unnecessary compromises in image quality. To put it simply - at this price, it is hard to find a better alternative.