Focus Scientific

USED Baader Hyperion 8-24mm Zoom Eyepiece Mark I (1.25\"/2\")

Condition: Very good. Has both focuser barrel adapters, end caps, and comes with a soft carrying bag with drawstring.

This is the eyepiece that made zooms respectable. While it is the Mark I, it holds up well to more modern variants.

Features and Specifications

  • Wide apparent field of view for a zoom
  • ~16mm eye-relief, large eye lens, and a pupil free of the kidney-beaning and blackouts common in many wide field eyepieces
  • High grade water-white glasses used throughout for crystal clear views, low scatter and excellent color fidelity
  • Use of high-index glasses delivers low distortion and astigmatism on scopes as fast as f/4
  • Phantom™ multicoating group for superior light transmission
  • Fits virtually every telescope
  • Modular design
  • Twist-up eyecup with rubber rim
  • Includes soft leather carry pouch

Photographic Features

  • Extremely sharp wide-field optical design highly suitable for projection photography, compatible with large chip CCD and DSLRs
  • Eye lens barrels provide M43 threads (covered by removable rubber)
  • Adapter ring system enables cameras to be directly close-coupled for afocal projection, or variably extended for classical eyepiece projection imaging with Baader T-adapter and extension tubes
  • Series of 16 threaded rings provide compatibility with virtually every digital (CCD/DSLR) and video camera (sold separately)


  • Focal length: 24mm-8mm
  • Apparent field: 50°-68°
  • 7 elements
  • Fully multicoated
  • 1.25" and 2" interfaces
  • Accepts 1.25" and 2" standard eyepiece filters
  • Adapter threads: M43mm (requires additional adapter, sold separately)
  • Binoviewer compatible: Yes
  • Tele Vue DIOPTRX™ compatible: No
  • Length: 11.3cm (4.4")
  • Weight: 415g (14.5oz)
  • Engineered in Germany, made in China