At a Glance
8mm
Focal Length
68°
Apparent FOV
18mm
Eye Relief
1.25"
Barrel Size
Score Breakdown
Overview
The Baader Hyperion 8mm is a well-regarded short-focal-length eyepiece aimed at observers who want detailed views of planets, the Moon, and tighter deep-sky objects. At 8mm, it delivers high magnification when paired with most telescopes, making it a solid choice for resolving lunar craters, Saturn's rings, and Jupiter's cloud bands. The 68-degree apparent field of view is wide enough to keep things interesting without pushing into territory where edge sharpness typically suffers.
Fully multi-coated optics help maximize contrast and light transmission, which matters when you are trying to tease out fine planetary detail. The 20mm of eye relief is genuinely useful, particularly for eyeglass wearers who often struggle with shorter focal length eyepieces. One standout characteristic is the modular design.
The eyepiece can be disassembled to work as a projection lens for astrophotography or paired with Baader's own Barlow adapters, giving it more versatility than a standard fixed eyepiece. At $196, this sits in the mid-to-upper range for 1.25-inch eyepieces. It is worth the investment if you plan to use it regularly, but casual observers may find comparable performance at lower prices.
Key Features
- 68-degree apparent field of view balances magnification with a comfortable, spacious image
- 20mm eye relief makes extended planetary sessions manageable, especially for eyeglass wearers
- Fully multi-coated optics improve contrast and reduce glare on bright targets like the Moon
- Modular construction allows use as a projection lens for lunar and planetary astrophotography
- Compatible with both 1.25-inch and 2-inch focusers, fitting most telescope setups without adapters
- Disassembles to connect with Baader Barlow accessories, effectively expanding your focal length options
- Includes a protective carrying pouch, a small but practical addition for storage and travel
Specifications
| Focal Length | 8mm |
| Apparent FOV | 68° |
| Eye Relief | 18mm |
| Barrel Size | 1.25" |
| Design | Modified Erfle |
| Elements/Groups | 8/5 |
| Series | Hyperion |
| Coating | Fully Multi-Coated |
| Waterproof | No |
Popular Telescopes for This Eyepiece
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Celestron NexStar 130SLT
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Sky-Watcher FlexTube 300P
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Unistellar eVscope Equinox
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Amazon Reviews
Good product fast delivery
I purchased this eyepiece after deciding I needed a closer look at bright Jupiter in its current perihelion. After some research on planetary viewing, the orthoscopic rose to the top of the list. This was my choice and I'm sticking to it.
Very nice eyepiece one of my favorites!!!
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