BAADER Hyperion 68° Modular eyepieces
Get more out of your telescope!
Most telescopes are supplied with one or two simple eyepieces in the set, which do not fully utilize the performance of the optics. Moderate contrast and sharpness, a small field of view and poor viewing behavior quickly spoil the fun of observing the sky. With Hyperion eyepieces, however, you can get the most out of your telescope!
The complete range of high-quality Hyperion eyepieces includes all important focal lengths and offers a wealth of possible combinations. With the right accessories, you will experience unforgettable hours observing a wide variety of celestial bodies. The special thing about Hyperion eyepieces: they are suitable for photography! Capture your astronomical impressions forever - by connecting cameras and camcorders to Hyperion eyepieces!
A distinction is made between the series with "fixed focal lengths" f = 5mm, 8mm, 10mm, 13mm, 17mm, 21mm, 24mm, the two large aspherical eyepieces 31mm and 36mm and the Hyperion zoom eyepiece with infinitely variable focal length from 8 to 24mm.
The 68° "fixed focal length" series of Hyperion eyepieces
The word "fixed focal length" is used here in quotation marks in this brief description because the modular design of the eyepieces enables you as the user to change the focal length. The fixed focal length Hyperion eyepieces are multifunctional eyepieces.
Wide range of applications
Connection of cameras and camcorders
The Hyperion eyepieces have two system threads at the top ("on the eye side"). To expose them, either the eyecup and/or the large thread protection ring made of silicone must be removed. One is an M43 external thread and the other has an SP54 external thread. The M43 thread (system thread 1) is used to connect T2 accessories, e.g. for normal eyepiece projection. A transition ring (Hyperion M43/T-2) must be inserted between the M34 and T2 threads for this purpose.
The SP54 thread (system thread 2) is used to connect digital cameras or camcorders where the Lens cannot be removed (so-called afocal projection).
Focal length variability and filter insert
The Hyperion eyepieces can be opened at the M48 (filter) thread at the upper end of the chrome-plated 1¼" eyepiece receptacle. The first lens group is located in the receptacle; if this is unscrewed together with the receptacle and the eyepiece is connected directly to the telescope in a 2" eyepiece clamp, you get an overview eyepiece with a long focal length and maximum field of view.
Inserting a 2" filter between the 2" and 1¼" receptacles has the opposite effect: the focal length becomes shorter and thus the magnification higher. Furthermore, astronomical 1¼" eyepiece filters can of course be screwed into the 1¼" receptacle of the eyepiece.
Our fine tuning rings (FTR) with 14 and 28 mm length are available for further modification of the focal length. The various possible focal lengths when removing the first lens group and in combination with filters and fine tuning rings can be found in the table above.
Stop ring (#2958097): Another "smart" accessory for our Hyperion eyepieces is the stop ring. It can be used to set the insertion depth of the eyepieces so that each eyepiece immediately provides a sharp image when inserted into a 2" star diagonal mirror.
Hyperion eyepieces 6-page instruction manual
Due to the wealth of functions, there is a separate 6-page instruction manual for the Baader Hyperion eyepieces to explain the variety of camera connection options and all the possibilities of focal length fine-tuning.
Hyperion fixed focal length eyepieces on Zeiss Diascope spotting scopes
The Hyperion fixed focal length eyepieces can also be used on Zeiss Diascope spotting scopes. For this, you need the BAADER Diascope eyepiece bayonet 1¼" adapter (#2454500) for connecting 1¼" astro eyepieces to the Zeiss Diascope spotting scopes. It is pushed over the 1¼" receptacle of the Hyperion eyepiece and fixed to the receptacle using 3 small clamping screws. The Zeiss bayonet connection is already present on the Diascope spotting scope, so that the complete Hyperion eyepiece and Baader bayonet adapter unit can be inserted directly into the Zeiss spotting scope.
Baader Phantom Coating® Group
Baader Phantom Group Coating is a 7-layer broadband antireflection coating with extremely low residual reflection. The designation "Group" indicates that the most effective anti-reflection coating system has been calculated for each individual glass type of the lenses used in the Hyperion eyepieces.
All these different anti-reflection coatings on each individual glass surface have been optimized to be most effective where the human eye has its highest night sensitivity - at approx. 520 nm - in the green region of the spectrum.
The best anti-reflective coating appears almost colorless: this proves that the anti-reflective coating is equally effective across the entire visible spectrum. Phantom Group anti-reflective coatings are - depending on the type of lens - almost completely colorless. This ensures that the least amount of light is lost to the night-adapted eye and that no stray light can occur.
If a coated lens (eyepiece or Lens) shows a strong green reflection when viewed directly from the front, then it is not a Baader Phantom Group anti-reflection coating! The intense green reflection is an indication of a less complex coating technique and means that most light is reflected, i.e. lost, in the spectral range between 500-550 nm.
Technical data
Manufacturer: Baader Planetarium
Net weight (kg): 4.10
Eyepiece series: Hyperion
Eyepiecedesign
Anti-slip protection: Classic Undercut
Number of lens elements: 8
Number of lens groups: 5
Outer diameter (mm): 58 mm
Field diaphragm diameter: varies for each focal length
Field diaphragm offset to reference surface: varies for each focal length
Height 1¼" receptacle: 24 mm
Height 2" receptacle: varies for each focal length
Eyepiece height above reference surface: varies for each focal length
Features
Interpupillary distance (mm): 20 mm
Focal length: 5, 10, 17, 24 mm
Field of view: 68°
Optical design: modular
Parfocal: yes
Specialty: afocal eyepiece projection, classic eyepiece projection
Insertion dimension (inches): 1¼"2"
Coating (anti-reflection coating): Phantom Coating® Group
Accessories included
Eyecups: foldable eyecup (M43)winged eyecup (M43)
Accessories included: eyepiece case
Dust caps: 1¼" dust cap (31.8mm), 2" dust cap (45mm), 2" dust cap (46.5mm)
Connections
External connection (eyepiece/camera side): M43
External connection (telescope side): ø 1¼" (31.75 mm), ø 2" (50.8mm)
Filter thread: Yes
Internal connection (telescope side): M28.5M48
Camera thread: M43, SP54
