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Baader Planetarium 31mm Hyperion Aspheric Eyepiece for 1.25" and 2" Focusers
SKU: AA2454631 MFR: HYP-31
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Key Features
- Enjoy wide, 72° views with this 31mm Hyperion aspheric eyepiece for stunning astronomy.
- Versatile compatibility: fits both 2" and 1.25" focusers for different telescope types.
- Experience exceptional clarity with high-quality lens coatings, enhancing your views.
- Optimized eye relief ensures comfortable viewing sessions, even during long observations.
- Durable build quality, weighing only 13.8 oz, makes it a reliable addition to your gear.
- Includes dust caps and folding eyecup to protect your valuable Baader Planetarium eyepiece.
Special Order?Estimated to Ship: 08/13/2025
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About Baader Planetarium Hyperion
FEATURED REVIEWS
Baader Hyperion eyepieces are provide great bang for the buck
I am an experienced amateur astronomer and I am currently converting my primary eyepiece set over to Baader Hyperions. These eyepieces provide a clear, wide field of view that rivals more expensive brands such as Televue. The only feature I don't like it the eyepiece guard which is separate rubber ring and is not incorporated into eyepiece casing.
Nice eyepiece!
Great contrast and clarity, good color. Nice wide view with good sharpness almost to the edge.
From the renowned brand Baader Planetarium comes the innovative 31mm Hyperion Aspheric Eyepiece, a high-quality, durable piece of astronomy equipment. This advanced eyepiece is one of the first in the world to incorporate cutting-edge aspheric surface technology. This innovative design allows for the elimination of eyepiece aberrations without the need for extra lens elements, excessive size, weight, or higher costs, making it a versatile choice for astronomy enthusiasts.
The Hyperion Aspheric Eyepiece boasts a clever design that includes 2" x 24 tpi SCT threads for attaching the 2" barrel. This unique feature allows the eyepiece to directly thread onto the rear cell of popular Schmidt-Cassegrain Telescopes (SCTs), resulting in unparalleled rigidity, which is crucial for high-quality imaging.
This eyepiece comes with two barrel sizes, providing flexibility for different viewing requirements. The standard 2" barrel delivers a full 72-degree field of view, while a special wide field 1-1/4" barrel offers the maximum true field in this barrel size, with a field stop of 1.265" (32 mm). This makes it perfect for extracting every bit of field possible in 1.25" focusers or binocular viewers.
Whether you're observing stars, planets, or deep sky objects, the 31mm Hyperion Aspheric Eyepiece is designed to provide a wide field of view and high contrast images, enhancing your celestial viewing experience.
Baader Planetarium Hyperion Features
- The aspheric surfaces on the 31 mm Baader Hyperion Aspheric Eyepiece eliminates distortion without extra elements, weight
- Supplied with a 2" barrel and 1.25" barrel
- The 31 mm Baader Hyperion Aspheric Eyepiece threads onto the back of most SCT rear cells, producing a rigid connection for imaging
- A wide 72-degree field of view and excellent eye relief are hallmarks of this great eyepiece
- The Baader Hyperion Aspheric eyepiece offers freedom from blackouts, kidney beaning, and lack of distortion, and combine with long eye relief to produce a view that is uncommonly comfortable and natural for all users
- The ultra-wide 72-degree field of view of these eyepiece is extremely flat and without distortion, and are virtually free of angular magnification distortion
- Baader's renowned Phantom Group Multi-Coatings and thorough internal baffling produce an extremely bright and high contrast view that is free of scatter
- The Hyperion Aspheric eyepiece accepts Televue's Dioptrx astigmatism correcting lenses
- The 31 mm Baader Hyperion Aspheric weighs 13.8 oz or 390 g
Warranty Information
This product has a limited warranty of 24 months for parts and 24 months for labor.