For passionate stargazers the search for optical perfection is never-ending. Whether you are observing the stunning spirals of distant galaxies or admiring the intricate beauty of a globular cluster, you want nothing but the sharpest, clearest image your telescope can offer. However, anyone using a Newtonian telescope is likely familiar with a common optical challenge: coma. This optical aberration distorts stars at the edges of your field of view, making them appear elongated or comet-like rather than as pinpoint dots of light.
Until now, the only solution to this problem was expensive and bulky coma correctors. But we are excited to introduce a revolutionary innovation that will change how you see the universe forever — the Houdini Coma-Correcting Eyepieces.
In the first months after their release, these eyepieces have received rave reviews. Read what observers are saying about them!
Price includes VAT. For non-EU customers 20% VAT will be deducted at checkout. Free shipping within the EU.
With the arrival of the Houdini 7 in December 2025, we're delighted to introduce the Houdini Starter Set containing the 20, 12 and 7 mm eyepieces. This set is the perfect starter kit for Newtonian telescope owners and includes three of the most commonly used focal lengths, for a lifetime of high-quality observing.
Although Houdini coma-correcting eyepieces were designed for Newtonian telescopes, they also work well on all telescopes with long focal ratios. Their overall optical excellence and ergonomic design make them an excellent choice for any telescope with focal ratio of f/6 or higher.
Set of three coma-correcting 20 mm, 12 mm and 7 mm eyepieces. The perfect starter package for any Newtonian telescope owner, with three of the most used eyepiece focal lengths.
Price includes VAT. For non-EU customers 20% VAT will be deducted at checkout.
Free shipping within the EU.
The image below graphically illustrates what the Houdini coma correction does in a fast f/4 Newtonian telescope. The spot diagrams are greatly magnified to show the optical aberrations more clearly. Near the edge of the field, star images are 5 times smaller in the Houdini 20 than in a standard 20 mm eyepiece!
Houdini eyepieces have been perfected to provide telescope users with the best image quality and ergonomic features:
[Robert Houdart, creator of the Houdini Coma-Correcting Eyepieces]
The Houdini eyepieces usher in a new era of observing with Newtonian telescopes. With parabolic coma correction built into the eyepiece, there is no need for an expensive and cumbersome coma corrector. The bulk and weight, cost, mechanical flexure, barlow effect, and focus in-travel of the coma corrector are removed.
You will never again have to worry about eyepiece positioning in a corrector. Just place the eyepiece in the focuser and focus to completely remove the coma from the parabolic mirror. No need to fumble with the tunable top or locking screws of the coma corrector when switching eyepieces.
The Houdini 86° series will further be expanded with coma-correcting eyepieces from 30 mm down to 4 mm focal length with the same optical excellence and great ergonomics. The goal is to completely eliminate the cost, bulk, and hassle of coma correctors for visual observations.
You can read more details on the Benefits of Coma-Correcting Eyepiece page.
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.
[Robert Houdart, creator of the Houdini Coma-Correcting Eyepieces]
Houdini Telescopes was created by long-time amateur astronomers and enthusiasts who want to share their knowledge and love of the stars with you. We understand that every stargazer wants to have the best experience, which is why we offer carefully selected products that meet the highest quality standards. We believe in providing excellent customer service and prompt delivery so you can quickly enjoy your new eyepiece. Whether you are an experienced amateur astronomer or just starting out, we have the right solution for your viewing needs.
Houdini Telescopes
Cruxis BV
Lange Lostraat 12
3010 Leuven
Belgium
VAT: BE0478.960.660
