Baader 8mm Hyperion Telescope Eyepiece

This Baader Planetarium Hyperion 8mm 1.25" Eyepiece is more than just a pretty face!  With a 68 degree field of view, coatings that rival eyepieces costing hundreds of dollars more, and great eye relief, the Baader Hyperion's are the perfect visual eyepiece, however, their innovative auto-locking 2-inch sleeve supports heavy cameras for afocal projection photography with the appropriate Hyperion T-ring.

Baader Hyperion Multi-Purpose 68 Degree Eyepieces - Great for visual use

• All Baader Hyperion eyepieces have an optimal 68-degree apparent field of view, the largest accessible to the stationary human eye. The entire field remains visible despite slight involuntary motions of an observer’s head.

• The annoying "kidney bean effect", the bane of many ultra wide-field eyepiece designs, is completely absent in the Baader Hyperion.

• Eight lens elements in five groups provide outstanding sharpness and color correction over the entire field.

• This Baader 8mm Hyperion eyepiece has 20mm of comfortable eye relief.

• No vignetting or falloff of illumination near the edge of the field.

• The use of high-index glass results in minimal distortion and astigmatism.

• The Baader Hyperion has unsurpassed color fidelity. Many eyepieces that employ cheaper glasses or inferior designs impart a yellow or blue cast to the image. With Hyperion eyepieces, white stays white!

• The most advanced anti-reflection multi-coatings are employed on all ten air-to-glass surfaces for maximum light throughput and brilliant images.  All coatings are carefully matched to the index of refraction for each of the different glass substrates used.

• The painstaking design and execution of baffling have all but eliminated troublesome stray light and ghost reflections.  Under all conditions of illumination, the interior of a Hyperion eyepiece will appear jet black, testimony to the virtual elimination of stray light.

• The Hyperion has the shortest field stop position of all wide field eyepieces known.

• Specifically designed for binocular viewing.  Ideal for use with accessory binocular viewers thanks to a tight barrel diameter (58 millimeters with the removable neoprene rubber grip ring, 56 millimeters with the grip ring removed) that permits interpupillary distance settings of as little as 56 millimeters.

• Each Baader Hyperion eyepiece in the series is actually two eyepieces in one!  A much longer focal length lens can be created by unscrewing the forward 1.25-inch diameter portion of the barrel that houses the negative achromat lens group.  Color correction remains excellent, and the field curvature that results is no greater than in a decent specimen of the 6-element Erfle design.  Removing the negative lens group exposes an M48 female thread so that large-format light pollution and nebular filters can be employed.

• Thanks to the short 1.25 chrome sleeve of 0.94”, all Hyperion’s are principally compatible with spotting scopes, including high-end units by Leica, Swarovski, and Zeiss.

The perfect eyepiece for afocal projection imaging

• The digital camera threads S54 and M43 x 0.75 have been incorporated into the Hyperion eyepiece for compatibility with the Baader Series 54 digital T-rings.  With a Series 54 t-ring installed on the Hyperion, you can attach almost any digital and video camera without vignetting. These threads are protected by caps when not in use.

• The vast majority of large digital cameras and camcorders of recent vintage feature an internal zoom lens with a fixed front lens and standard filter threads.

• The robust construction of Hyperion eyepieces is capable of directly supporting heavy video and film cameras weighing up to 6.6 lb.

• Hyperion eyepieces are also ideal for use with so-called clamping-style universal digital camera holders, and will precisely support cameras squarely with respect to the optical axis, due to their straightforward cylindrical-shaped outer body.

• With or without the removable negative lens group, the Hyperion eyepiece is an incredibly sharp projection system.

• In combination with a short-focus objective as small as 60mm, the same afocal imaging configuration can be employed in the industry for monitoring hazardous operations like plasma welding from a safe distance.