From $169.00
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The Baader Planetarium 21mm Hyperion is a premium wide-field eyepiece featuring an 8-element/5-group optical design optimized for exceptional sharpness and color fidelity across a 68-degree apparent field of view. With 20mm of comfortable eye relief and proprietary Phantom Group multi-coatings, it delivers superior contrast and light transmission even in fast telescopes, making it ideal for both visual observation and afocal astrophotography. The eyepiece's innovative modular design works in both 1.25" and 2" focusers, with a removable negative lens element that permits variable focal lengths using optional Baader Fine Tuning Rings.
TelescopesPlus
Planetarium 21mm Hyperion Telescope Eyepiece - HYP-21
$169.00
Astronomy Plus
Baader Hyperion 21mm 68° (HYP-21)
CA$241.00
~$177.05
Astroshop.eu
Hyperion eyepiece 21mm
€165.00
~$195.88
High Point Scientific
Baader Hyperion 21 mm 68° 1.25"/2" Eyepiece with Free Case
$217.00
Agena Astro
Baader 1.25" and 2" Hyperion Eyepiece - 21mm
$217.00
| Focal length | 21 mm |
| Filter Threads | M43 and M54 |
| Barrel Length (1.25 inch) | 0.94 in |
| Maximum Camera Weight Support | 6.6 lb |
| Apparent Field of View | 68° |
| Modular Design | ✓ |
| Eye Relief | 20 mm |
| Barrel Length (2 inch) | 0.94 in |
| Focuser Compatibility | 1.25 inch and 2 inch |
| Glass Type | High-index water-white glass |
| Suitable for Binoviewing | ✓ |
| Optical design | 8 elements in 5 groups |
| Optical Coatings | Phantom Group 7-layer broadband multi-coatings |
| Removable Negative Lens Element | ✓ |