Description

Baader Hyperion Eyepieces

Modular dual 31.7mm/50.8mm 68 degree widefield eyepieces that performs as well as eyepieces three times its price.

Baader Hyperion Eyepieces Main Features:

Hyperion 68° eyepieces are multifunctional.
Here are the most important features:
1.25" and 2" barrels with self-locking safety groove
Unscrewing the 1.25" barrel (which contains the first group of lenses) allows changing focal length by adding our finetuning rings.
The M48 thread located between the 1.25" and 2" barrels allows inserting a 2" filter.

All eyepieces are suitable for afocal and classical eyepiece projection.

The Hyperion design has has both a 31.7mm (1 1/4") and 50.8mm (2") barrel for fitting into either size focuser or diagonal. Both barrel sizes have a safety groove for safe use in your telescope. Each Hyperion features Baader's PHANTOM-GROUP Multi-Coatings for maximum light transmission and the ultimate in image contrast. There are two photographic threads on each Hyperion, M43 and SP54. These threads are located under the rubber eye-cap, or rather beneath the thread protecting ring which is made of high-quality and aging-resistant silicone rubber.

A variety of focal lengths can be obtained from each Hyperion. A second focal length is easily acheived by removing the first group of lenses. Additional FL can then be acheived by purchasing a 14mm Fine Tuning Ring (FTR), 28mm FTR, combining the 14mm and 28mm FTR, and with 2" Baader Filter (height 8mm).

The Hyperion can be combined with a Baader adaptor ring to mount a camera directly onto the eyepiece. In addition, there are a large number of Baader adapting rings and fittings to make the Hyperion suitable for (almost) every task in astronomical - and nature - photography as a high quality projection optic or as a tele-extender.

Each Hyperion is supplied with a soft leather storage bag for safe keeping, and two dust caps for storing the eyepiece with either the rubber eyeguard either folded up or down!

Baader Hyperion Eyepieces Specifications

Specifications

Specifications: Baader Hyperion Eyepieces

FOCAL LENGTH: 5, 8, 10, 13, 17, 21, 24 mm
APPARENT FIELD OF VIEW&: 68°
EYE RELIEF (MM): 20 mm
AR-COATING: Phantom Coating® Group
PARFOCAL EYEPIECES: Yes
BARREL SIZE (IN): 1¼", 2"
OPTICAL DESIGN: Modular
SPECIALITY: Eyepiece projection: afocal, Eyepiece projection: classical
FIELD STOP DIAMETER: varies for each focal length
FIELD STOP DISPLACEMENT TO REFERENCE PLANE: varies for each focal length
NUMBER OF LENS ELEMENTS: 8
NUMBER OF GROUPS: 5
SLIP PROTECT SAFETY: Classic Undercut
EYEPIECE BODY ABOVE REFERENCE PLANE (MM): varies for each focal length
LENGTH OF 1¼" BARREL (MM): 24 mm
LENGTH OF 2" BARREL (MM): varies for each focal length
OUTER DIAMETER: 58 mm
OUTER CONNECTION (EYEPIECE/-CAMERA-SIDED): M43
INNER CONNECTION (LENS SIDED): M28.5, M48
OUTER CONNECTION (LENS SIDED): ø 1¼" (31.75 mm), ø 2" (50.8mm)
CAMERA THREAD: M43, SP54
THREADED FOR FILTERS: Yes

The effective FL of the 5mm eyepiece is as follows:

With 14mm FTR: 4mm
With 28mm FTR: 3.2mm
Combined FTR: 2.6mm
2" Baader filter: 4.3mm
Removing first group of lenses: 22.5mm

The effective FL of the 8mm eyepiece is as follows:

With 14mm FTR: 6mm
With 28mm FTR: 5mm
Combined FTR: 4.3mm
2" Baader filter: 6.9mm
Removing first group of lenses: 21.8mm

The effective FL of the 10mm eyepiece is as follows:

With 14mm FTR: 8.4mm
With 28mm FTR: 7.1mm
Combined FTR: 6.1mm
2" Baader filter: 9.1mm
Removing first group of lenses: 22.4mm

The effective FL of the 13mm eyepiece is as follows:

With 14mm FTR: 10.8mm
With 28mm FTR: 9.2mm
Combined FTR: 8.1mm
2" Baader filter: 11.7mm
Removing first group of lenses: 22.9mm

The effective FL of the 17mm eyepiece is as follows:

With 14mm FTR: 13.1mm
With 28mm FTR: 10.8mm
Combined FTR: 9.2mm
2" Baader filter: 14.6mm
Removing first group of lenses: 21.8mm

The effective FL of the 21mm eyepiece is as follows:

With 14mm FTR: 17.6mm
With 28mm FTR: 15.5mm
Combined FTR: 14mm
2" Baader filter: 18.5mm
Removing first group of lenses: 32.2mm

What's in the Box

What's in the Box: Baader Hyperion Eyepieces

Baader Hyperion Eyepiece
1¼" Dustcap (31,8mm)
2" Dustcap (45mm)
2" Dustcap (46.5mm - fits over eyecup)
Folding Eyecup (M43)
Soft-leather bag

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Delivery

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