The New Astro-Tech UWA 82° eyepieces from Astronomics offer an 82° apparent field of view and are available in six different sizes. The eyepieces offer a seven element/four group design featuring low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across a very wide 82° field of view. The lens edges have been blackened to improve contrast. Each eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.
The eye relief is good for such a short focal length eyepieces, although eyeglass wearers will still see a somewhat vignetted image. This isn’t as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. This is an eyepiece that shows you a “picture window view” of space for a true full-immersion observing experience. With its unconstricted view, your eye relaxes, allowing you to easily use the “averted vision” technique to study faint details across a huge field of view.
Astro-Tech 4mm, 7mm, 10mm, 13mm 1.25″ UWA Eyepieces
The Astro-Tech 4mm, 7mm, 10mm, 13mm 1.25″ UWA eyepieces work well with virtually any telescope from a fast focal ratio reflector to a long focal length refractor or Maksutov. They are particularly good with Dobsonians and fast focal ratio refractors, providing high magnification with a very wide field of view for observing smaller globular clusters and compact nebulas.
Astro-Tech 16mm 1.25″ UWA Eyepiece
The Astro-Tech 16mm 1.25″ UWA eyepiece, when used with a 10″ f/4.5 Dobsonian reflector will have a full 1.29° field at 71x, able to encompass all of the Pleiades in one field. Even an 8″ f/10 catadioptric will have a field almost one and a half lunar diameters across, able to encompass the full Moon with room to spare, the Orion Nebula, and many globular clusters, as well.
Astro-Tech 28mm 2″ UWA Eyepiece
The 2″ 28mm Astro-Tech is designed for the serious deep space explorer – no matter what your telescope type. For example, the 28mm Explore Scientific will give you a 1.15 degree field at 71x with the 2000mm focal length of either a big 17.5″ f/4.5 Dobsonian or an 8″ f/10 Schmidt-Cassegrain. That’s almost two lunar diameters and is ideal for observing emission and reflection nebulas and nebula remnants.
A 10″ f/4.5 Dobsonian reflector will have a full 2.01° field at 40x with this eyepiece, able to encompass all of the Pleiades in one field. As with the 16mm, a 8″ f/10 catadioptric will have a field almost one and a half lunar diameters across, able to encompass the full Moon with room to spare, the Orion Nebula, and many globular clusters, as well.
You can learn more about the new Astro-Tech UWA 82° eyepieces here.
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