The Baader Hyperion Zoom Barlow quickly attaches to any Hyperion 8-24mmm Clickstop zoom eyepiece, instantly converting it into a 3.5-10.5mm Zoom.  The matched optical design results in a virtually transparent 2.25X multiplication, without any optical compromises, essentially giving a 7X zoom range with outstanding optical performance throughout the 3.5-24mm range.  

Some highlights of the Hyperion Zoom Barlow Lens

• Optically Matched for perfect optical performance with the Hyperion 8-24mm Clickstop Zoom.
• Anastigmatic Flatfield Design.
• Air-spaced triplet lens.
• Baader Phantom Group Coatings on all air-glass surfaces
• Fully internally baffled and blackened to eliminate stray light reflections
• Enables dual 2"/1¼" Barrel Configuration with all Baader Hyperion Clickstop Zooms (MkI - MkIII)
• Threaded for standard 1¼" filters.
• Modular Design.

Outstanding as a general purpose Visual Barlow and Flatfield Projection Optic

• Includes all adapters needed to couple to any 1¼" filter thread.  Enables attachment to practically any 1¼"Eyepiece for use as a classic APO barlow.
• Includes T-adapter to couple to any T-threaded component, camera, extension tubes, diagonal, etc.

The Hyperion Barlow works superbly with all DSLR and CCD cameras for projection imaging.  The included T-2 Adapter enables the Barlow to be attached and configured with practically any camera, and is able to cover projection ratios of up to 5X through the use of extension tubes