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Description
ALPINE ASTRONOMICAL Hyperion Aspheric 72 31mm Eyepiece with Winged Eyeshield (1.25"/2")31mm Focal Length 72 Field of View 6 Element 4 Group Aspheric Lens Design 1. 25" 2" Diameter Barrel Phantom Coating Group Multi Coatings 43mm and 54mm T Ring Threads With an exceptional field of view and long eye relief, the Alpine Astronomical Baader 72 Hyperion 31mm Aspheric Eyepiece produces relatively low magnifications on most telescopes, making it ideal for detailed lunar and planetary viewing or wide field deep sky observations, plus
- 31mm Focal Length
- 72° Field of View
- 6-Element/4-Group Aspheric Lens Design
- 1.25"/2" Diameter Barrel
- Phantom Coating Group Multi-Coatings
- 43mm and 54mm T-Ring Threads
With an exceptional field of view and long eye relief, the Alpine Astronomical Baader 72° Hyperion 31mm Aspheric Eyepiece produces relatively low magnifications on most telescopes, making it ideal for detailed lunar and planetary viewing or wide-field deep sky observations, plus astrophotography. Its 72° field of view offers a viewing angle that is wider than the human eye, but not so wide that contrast and image brightness are compromised.
The eyepiece lens is made with a unique 6-element/4-group aspheric configuration to virtually eliminate spherical aberration, astigmatism, "kidney beaning," and other optical distortions. Phantom Coating Group multi-coatings, blackened lens edges, and internal baffling deliver bright and high-contrast views that are free of scattered and diffracted light. It comes with two barrel sleeves that allow it to fit into 1.25" and 2" drawtubes and accessories. When using the 1.25" barrel, the field of view is reduced to 55 degrees. To limit distraction and improve brightness and contrast, a winged eyecup is included that can fold down for those who require eyeglasses during viewing. To perform all types of astrophotography, including afocal and projection, two sets of T-mount threads are provided�43mm and 54mm�that accept standard camera-specific T-rings to directly attach CCD imaging cameras or DSLRs.
| Focal Length | 31 mm |
| Barrel Diameter | 1.25" / 2" |
| Eye Relief | 17 mm |
| Field Stop Diameter | 1.25": 30 mm 2": 38 mm |
| Apparent Field of View | 72° using 2" barrel 55° using 1.25" barrel |
| Dimensions | Length: Main body: 3.0" / 76.7 mm 1.25" Barrel: 0.9" / 23.9 mm 2" Barrel: 1.1" / 27.5 mm Diameter |
| Weight | 17.4 oz / 493.0 g |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy