Baader Hyperion-Aspheric Eyepiece - 31mm # HYP-31 2454631

Our Price: $209.00
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In Stock (10+ Available)
Ships by Next Business Day
Our Product ID: E-BP-HYPA-31
Manufacturer SKU: 2454631
Item Can Ship: Worldwide
Baader Hyperion-Aspheric Eyepiece - 31mm # HYP-31 2454631

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  • Baader Hyperion-Aspheric Eyepiece - 31mm # HYP-31 2454631
  • Baader Hyperion-Aspheric Eyepiece - 31mm # HYP-31 2454631

Product Details

Baader Planetarium has evolved the wide-field astronomical eyepiece to a new level. Introducing the worlds first production Astronomical Eyepieces to use aspheric surfaces, the 31mm and 36mm Baader Hyperion-Aspheric 72-deg Modular Eyepieces. This new technology has allowed Baader to eliminate eyepiece aberrations without the usual penalty of extra lens elements, excessive size and weight, or high cost.

• The Hyperion-Aspherics freedom from blackouts, kidney beaning, and lack of distortion combines with their long eye relief to produce a view that is uncommonly comfortable and natural for all users (including eye-glass wearers and users of popular astigmatism correcting lenses).
• The ultra-wide 72° field is extremely flat and distortionless (virtually free of angular magnification distortion).
• Baaders renowned Phantom Group Multi-Coatings and thorough internal baffling produce an extremely bright and high contrast view that is free of scatter.
• Hyperion Modularity Superb for projection imaging. The Hyperion-Aspherics are threaded to accept the full line of Hyperion Digital T-Rings, for a robust direct attachment of almost any camera. The clever use of 2"x24 TPI SCT threads for attaching the 2" barrel permits the Hyperion-Aspherics to directly thread onto the rear cell of popular SCTs. This results in the highest rigidity possible for imaging.
• Dual Barrel Configuration two barrel sizes are provided with each Hyperion Aspheric. The standard 2" barrel provides the full 72-deg field size, and a special wide-field 1.25" barrel provides the maximum true field ever in a 1.25" format, with a field stop size of 1.265 (32mm)! - perfect for extracting every bit of field possible in 1.25" telescopes or binoviewers.
• Accepts popular astigmatism correcting lenses.
• Weight: 390 g (13.8 oz)

Useful Resources

Hyperion Brochure
Eyepiece Series Hyperion-Aspheric
Focal Length 31mm
Barrel Size 1.25" (31.7mm) and 2" (50.8mm)
Apparent Field of View (Mfg Specified) 72°
Eye Relief (Designed) 17mm
Filter Threads Standard 1.25" (M28.5 x 0.6) and 2" (M48 x 0.75) Filter Thread
Coatings Fully Broadband Multi-Coated (Phantom Group)
Lens Elements 6
Lens Groups 4
Blackened Lens Edges Yes
Barrel Type With safety undercut
Protective Plastic Storage Container Yes - Free Agena Eyepiece Container
Protective Plastic Storage Container Size Agena 65x120mm
Maximum Width 59.5mm
End Caps 3
Field Stop Diameter 32mm (1.265")
Parfocal Yes
Rubber Eye Guard Yes
Weight 13.8 oz (390 g)