SKU: 42809328134

ALPINE ASTRONOMICAL Hyperion 68 13mm Eyepiece (1.25")

Sale price$14483.25 Regular price$16092.50
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Description

ALPINE ASTRONOMICAL Hyperion 68 13mm Eyepiece (1.25")13mm Focal Length Wide 68 Field of View 8 Element 5 Group Lens Design 7 Layer Broadband Multi Coatings 1. 25" & 2" Diameter Barrel M43 and M54 Imager Threads Fold Down Rubber Eyecup Parfocal with Most Hyperion Eyepieces With a wide angle of view and generous eye relief, the Alpine Astronomical Baader Hyperion 68 13mm Astronomical Eyepiece delivers the performance that avid amateur astronomers demand for viewing and imaging. Engineered with an 8

  • 13mm Focal Length
  • Wide 68° Field of View
  • 8-Element/5-Group Lens Design
  • 7-Layer Broadband Multi-Coatings
  • 1.25" & 2" Diameter Barrel
  • M43 and M54 Imager Threads
  • Fold-Down Rubber Eyecup
  • Parfocal with Most Hyperion Eyepieces

With a wide angle of view and generous eye relief, the Alpine Astronomical Baader Hyperion 68° 13mm Astronomical Eyepiece delivers the performance that avid amateur astronomers demand for viewing and imaging. Engineered with an 8-element/5-group lens design, the eyepiece features Baader's proprietary 7-layer broadband multi-coatings to maximize light transmission across the entire visual spectrum with true color rendition and without the green tint and halos common in many astronomical eyepieces.

Baader made this eyepiece with a unique modular design that allows it to fit into standard 1.25" holders and accessories with the ability to remove the primary snout and have it fit into larger 2" holders. Since one of the lens groups is in the 1.25" snout, when it is removed it changes the focal length without changing the brightness or long 20mm eye relief. The focal length can also be changed through the use of compatible filters�allowing you to customize the magnification yield based on your optical tube assembly and need.

The eyepiece comes with a fold-down rubber eyecup for use with or without eyewear, and the eyecup can be completely removed to reveal a set of two threads. These M43 and M54 threads allow T-rings and other adapters to be mounted for direct connection of imaging systems for afocal and projection astrophotography techniques. This model is parfocal with all other Hyperion eyepieces except the 24mm version, which means there is little to no need to refocus when changing eyepieces within the Hyperion line.

Focal Length 13 mm
Barrel Diameter 1.25"
2"
Eye Relief 20 mm
Field Stop Diameter 15.4 mm
Apparent Field of View 68°
Dimensions 4.3 x 2.3" / 109.6 x 58.0 mm
Weight 13.7 oz / 387.0 g
In the Box
ALPINE ASTRONOMICAL Baader Hyperion 68° 13mm Astronomical Eyepiece (1.25"/2")
  • Carrying Pouch
  • Limited 2-Year Warranty

All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 42809328134

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Justin Tyme
Chelsea, US
★★★★★ 5
Might seem pricey, totally worth it.
Size: One Size, Color: Classic Grey
Was a little more than I wanted to spend, but hey, it's cashmere. Super light but sturdy. Stiching seemed a little off and had a couple of funny points but I gave it a few wearings and they smoothed out just fine. I was looking for a tight fitting beanie for my bald head, hat size 7 1/4, with a bunch of loose fitting at the top like one of the seven dwarves and this one is form fitting. Perfect for my bald brothers and sisters out there. Compared to almost an exact beanie I have in Marino wool, this is lighter, softer,and warmer. Excellent buy.
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Reviewed in the United States on January 7, 2026
M
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Mimi Beach
New York, US
★★★★★ 5
Exceptional and dvellence
Size: One Size, Color: Black
Exceptional quality cashmere
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Reviewed in the United States on April 8, 2026
M
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Maureen Ney
Bozeman, US
★★★★★ 5
The hungry mini schnauzer
Size: One Size, Color: Black
I bought this hat for my husband, twice. He loved the hat, and the dog did too. My dog Lola, ate the hat twice. With these cold, snowy New England days and nights, this hat was so warm, soft and felt great on his head, it was perfect until Lola decided if anyone would have it, it would be her! Is there any way you could possibly replace this hat??
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Reviewed in the United States on January 3, 2026
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Verified Purchase
Candid Colin
Whiting, US
★★★★★ 5
Comfortable
Size: One Size, Color: Black
Warm and stretches to fit without feeling tight, my favorite lightweight knit hat.
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Reviewed in the United States on April 12, 2026
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Anonymous
Louisville, US
★★★★★ 3
Pure 100% Cashmere Beanie for Men - runs very small.
Size: One Size, Color: Black
A soft cashmere which is ribbed. However it is advertised as a Mens hat but size is very small for a man. Would be a better fit for a petite woman. Looks here like it has a turn up ribbing at bottom, but it does not.
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Reviewed in the United States on February 24, 2026

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