The Houdini eyepieces provide around 19–20 mm of nominal eye relief, with a foldable eyecup that provides around 15 mm of effective eye relief. This is sufficient for many observers wearing glasses. However, some glasses wearers may still find that they need to get their eyes slightly closer to the eye lens to see the full field of view comfortably.
The release of the Houdini 30 and Houdini 9 over the summer months has been a tremendous success. The 30 mm eyepiece has been our most successful model ever in its first couple of months.
We are pleased to introduce two new additions to the series: the Houdini 30 mm and Houdini 9 mm, both available for preorder now, with delivery expected by the end of June.
This is a longer blog post reporting on my findings with the Houdini 30 prototype we received on the last day of 2025, compared to the legendary Nagler 31—one of my all-time favorite eyepieces.
Happy New Year — and clear skies in 2026!
Since its release in April, the Houdini 20 has been a huge success, receiving excellent reviews from observers using Newtonian, refractor, and SCT telescopes. It's hard to believe it's only been seven months!
The validation of the Houdini 7 last month went very well.
The prototype of the Houdini 7, the third model in the series, has arrived!
The first batch of Houdini 12 will be shipped from KUO this week. We will validate and package them in our EU offices, and begin shipping them around August 12.
The Houdini 12 prototypes we received a few weeks ago have been successfully validated. It's a beautiful eyepiece that packs a lot of goodies into a compact body.
To ensure the best user experience, we validate each Houdini eyepiece in a 200 mm (8 inch) f/4 Newtonian telescope.
We've been using ROR fluid for many years - it's the best solution we know for cleaning eyepieces.
