Binorum SuperStrong 2″ 45mm Extension Tube

Binorum SuperStrong 2″ 45mm Extension Tube

Every astronomer who experiments with different eyepiece systems or a binocular diagonal will eventually face the same problem - the eyepiece simply cannot reach focus. A sharp image stays out of reach, even when the telescope itself is in perfect condition. The Binorum SuperStrong 2″ 45mm extension tube solves this directly and without compromise: it adds exactly 45mm to the optical path - precisely the distance that is missing in these situations. The compact length means you are not adding unnecessary extra travel, just as much as the situation actually requires. The result is a sharp image without frustrating adjustments or repeatedly reassembling your setup.

The extension tube is also useful where the issue is not technical but simply comfort. When working with a mount in a low position, sitting on a stool, or observing at an awkward angle, shifting the eyepiece by a few centimetres can make a real difference to your whole session. Just insert the tube into the focuser, tighten the locking screw, and place your eyepiece or any accessory into the other end. Installation takes just a few seconds. The tube sits firmly with no play that could disturb an otherwise stable view. The SuperStrong build lives up to its name - this is a robust solution you can rely on even with regular use in the field.

Who benefits most from a telescope extension tube?

Extension tubes for telescopes are especially useful for owners of instruments with a short focal length, where the standard focuser travel is not enough to reach focus with certain eyepiece systems or a binocular diagonal. The standard 2″ diameter ensures compatibility with the vast majority of modern refractors, reflectors and catadioptric telescopes. Amateur astronomers who regularly change configurations and combine different accessories will appreciate that the tube works as a reliable and unobtrusive link in the optical chain - it does not get in the way, it requires no attention, and it simply does its job. Whether you are observing visually or doing astrophotography, a 45mm extension is often exactly the value that saves the session.

About Binorum

Binorum was founded by astronomers who know precisely what observers need at the eyepiece - and what frustrates them. The brand is not built on grand gestures, but on a carefully considered range that covers the entire chain from the telescope itself to seemingly small accessories such as extension tubes, adapters and eye shields. Binorum accessories stand out for their emphasis on compatibility with widely used standards, solid build quality and a broad selection that appeals equally to beginners and experienced observers. If you are looking for a brand you can trust even when choosing a small but important addition to your setup, Binorum is a choice that comes from real-world experience - not from marketing spreadsheets.

Technical specifications