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Providing performance at a reasonable price for most beginners, the Explore Scientific 52° Series Eyepiece produces a moderate power in most telescopes, and is a perfect addition to your observation arsenal.
with a generous 52° apparent field of view, it employs a flat-field
lens system that is treated with their proprietary Enhanced Multi-Layer
Deposition (EMD) coatings to produce bright and clear views that are
flat edge-to-edge. This lens design makes this eyepiece ideal for
averted viewing techniques in which you view dim deep sky objects, such
as wispy nebulae, indirectly using the portion of the eye that is most
sensitive to light.
This model of the 52° series is offered here
with a standard 1.25" barrel to make it compatible with the most popular
size drawtubes and accessories. The eyepiece is argon-filled and O-ring
sealed to be waterproof against condensation and dew and resistant to
fogging. A textured collar provides a slip-resistant grip, especially in
cold weather or while wearing gloves. A fold down rubber eyecup makes
it comfortable and easy to view through, with or without eyewear.