82° Series 30mm Waterproof Eyepiece
The 30mm 82° Series Waterproof Argon-Purged Eyepiece is a popular focal length in the upper-medium power magnification class providing both super-wide apparent field and generous eye relief. It is perfect for any application where more power is desired including observing globular star clusters, planetary nebulae, the bright cloud structure near the nucleus of comets, initial observations of planets, and (with the proper safe filtration on your telescope), observations of active regions of the sun. Use with Explore Scientific Focal Extenders for 2X, 3X, or 5X magnification increases while maintaining the eyepiece native apparent field and eye relief.
Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable enhanced multilayer deposition (EMD) coatings, Explore Scientific 82° Series super wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. The visual effect of these eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the “averted vision” technique to study faint details across a huge field-of-view.
Each eyepiece is meticulously assembled into precision machined metal lens barrels that maintain the perfect alignment of the optical train for years of rugged use in the field. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves.
Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. Explore Scientific 82° Series eyepieces, with their 82° apparent field of view, immerses you in a very comfortable ultra-wide field that naturally promotes relaxation at the eyepiece. When you relax your eyes and take in the scene presented before you, it is much easier to observe for longer periods of time, and details begin to materialize that may not have become apparent to you at first glance. Another great benefit of ultra-wide eyepieces is the ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.
Use with the Explore Scientific 2X Focal Extender (2.0-inch O.D. to double the magnification of this eyepiece (making it an effective 15mm focal length while maintaining the same eye relief and apparent field.
Customers praised this waterproof eyepiece for its "high quality" and "excellent view." The 82° wide field delivers "pinpoint stars" and "sharp" images across most of the field. Shoppers noted "spectacular views" with "fine, wispy details" on deep sky objects and "excellent light throughput." Heavy at 2 pounds, but well-built.
- Great wide views, completely flat field, stars were pinpoint, can really feel the 82 degrees.
- The views are spectacular with pinpoint stars and an amazing depth of field.
- Excellent light throughput and contrast, fine wispy details clearly seen in emission nebulae.
Great eyepiece - very wide apparent field of view, with decent eye relief. Excellent light throughput and contrast on deep sky objects with fine, wispy details clearly seen in emission nebulae. Used with an 18" f/4.5, stars are sharp across 90% of the field. Typical wide field eyepiece performance in a fast Newtonian scope. The addition of a coma corrector brings all star images to sharp points across the entire field, for those who are perfectionists. In terms of build quality and visual performance, this eyepiece compares very favorably with much more expensive competing units at a much lower price point. Highly recommended!
High quality eyepieces. Have not been able to use yet, but I am excited!
Very nice.
High quality. Excellent view.
Great wide views, completely flat field from what I could see in my single use, stars were pinpoint, and can really feel the 82 degrees. Would highly recommend. This eyepiece was the last of my collection and I'm happy it has filled it.
I needed a wide field low power eyepiece to go with my Askar 140 and what a great match it is! The views are spectacular with pinpoint stars and an amazing depth of field. At 2 pounds it’s a heavy eyepiece but I didn’t have any balancing issues with the OTA on my EQ6-R Pro.
Amazing views with this eyepiece!
Always wanted a wide-angle 30 mm eyepiece, and this one is a beauty. Superb engineering and such a quality product, eager for clear nights with this stunning eyepiece.
Great eyepice
Great clarity. It made finding Neptune and Uranus easy.
Very effective eyepiece, well packed and fast shipping. Can't beat that!