Baader 17mm Hyperion Modular Eyepiece - 1.25"/ 2"

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Baader 17mm Hyperion Modular Eyepiece - 1.25"/ 2"

Baader Planetarium's Hyperion Modular Eyepieces are some of the finest available amateur wide field of view eyepieces in the world. Built for efficiency and quality to provide a high-end and world-class level of performance to the amateur astronomers of the world, the Hyperion eyepieces have been designed for optimal transmission, contrast, and clarity. By utilizing the best available optical coatings and a superb mechanical design Baader has produced a low cost eyepiece that operates on an entirely different level from competition at a similar price point. A prime quality of these splendid eyepieces is their modular and multi-functional nature. Designed to be usable with a wide variety of telescopes, these eyepieces can be inserted into both 1.25" and 2" compatible focusers. These eyepieces have also taken comfort into consideration, and have been ergonomically constructed with long astronomy sessions in mind from the start with features such as an integrated eye guard and 20mm of eye relief.


Dust Caps IncludedYes
ER20mm or More
Eye Guard IncludedYes
Eye Relief20mm
Eyepiece OpticsHyperion Modular
Field of View68 degrees
Focal Length17mm
FoV 79 Degrees
Free ShippingYes
Lens Elements & Groups8 elements & 5 groups
ModelBaader Hyperion
Warranty1 Year Warranty
Customer Reviews
4.3 Based on 9 Reviews
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Baader 17 mm Hyperion

The eyepiece works great. Sharp images

Alexis V.
United States

Llegó impecable este magnifico ocular, recomendado 100%, me encantan los hyperion de baader


Hey there, 20 50 is alright, a bit too high maioifgcatinn for a 50mm apeture. If you already have it thats wonderful. Theres two main type of binos. One is for bird watching and the other is astronomical. If you want astronomical, I'd recommend a 15 70 Celestron Skymaster Binos the down side is that it weighs alot so youd need a tripod. If you want Bird watching binos, get a lower maioifgcatinn and a smaller apeture and it doesnt need a tri pod. If you got more questions message me.


You'd find 50mm objectives would not allow engouh light gathering at that great magnification. Big dim images are less rewarding than smaller, wider field, brighter ones. With binos, a wider less magnified image allows you to locate deep sky objects as they relate to their neighbours; i.e. whole constellations make sense, but isolated stars streaking by don't. Finally, if that 50 50 objective to magnification relationship were useful, pros would use and advocate them. They don't.

Baader Hyperion 17 mm

I bought this EP along with the 13mm version about a month ago as an alternative to the 19mm Panoptic. I'm very satisfied with both EPs and plan on adding the 5mm and 21mm as my next EP purchases.

P. Beach

These Baader hyperion eyepieces are superb value for money. Great optics at a really good price. I have a fast F/5 dobsonion, and I struggle to find my 17mm views in any way inferior to the views through my 10mm Pentax eyepiece (and that's saying something!. I didn't find the 13mm as good as the 17mm, but the 17mm is definitely a keeper.