Omegon SC Hybrid Crayford 2″ Dual Speed 1:10 Focuser

Omegon SC Hybrid Crayford 2″ dual speed 1:10 focuser

If you photograph or observe through a Schmidt-Cassegrain telescope, you know the frustration all too well: you focus carefully, then find that the primary mirror shifted by a fraction of a millimeter at the last turn of the knob - and the image is blurry again. This "mirror shift" is a classic problem with SC telescopes, and the Omegon SC Hybrid Crayford 2″ dual speed 1:10 focuser is its elegant solution. Coarse focusing is still handled by the standard mirror knob, but the final - and truly critical - fine adjustment is taken over by this focuser, with a precision that will satisfy both astrophotographers and visual observers.

Bearing-type Crayford design - a step beyond the standard

The classic Crayford focuser is popular for its smooth, backlash-free movement. Omegon went further and developed a so-called "bearing type" Crayford. The inner drawtube is supported by 8 oversized cylindrical bearings that keep it precisely centered and prevent any rotation or axial shift. This is a significant advantage over standard Crayford focusers, where the drawtube can drift slightly under load. In addition, a toothed wheel with a pin ensures that the drawtube stays firmly in the set position and does not slip under the weight of attached accessories - even at full extension.

Smooth movement and reliable locking

The drawtube movement is genuinely silky smooth throughout the full 25 mm of travel. Rubber-reinforced and finely knurled focusing wheels offer a pleasant feel and reliable grip even when wearing winter gloves. The locking screw can firmly fix the entire focusing mechanism for imaging sessions - without clamping the drawtube from the side, so neither the centering accuracy nor the focuser mechanics are compromised.

Dual speed 1:10 ratio for precise focus control

Dual-speed focusing with a 1:10 ratio is almost essential for astrophotography. When working with live view on a laptop or with planetary cameras, a single millimeter of drawtube movement can make an enormous difference in sharpness. The fine wheel with a 1:10 reduction gives you complete control even under these demanding conditions - allowing you to focus precisely on a specific layer of Jupiter's atmosphere or a delicate structure in a star cluster without overshooting.

High load capacity and rotating drawtube

Astrophotography rigs can be heavy - a large CCD or CMOS camera, an off-axis guider, or a heavier 2″ eyepiece. The Omegon SC Hybrid Crayford handles such setups with ease, with a load capacity of up to 8 kg in a fixed, vertical position. The rotating drawtube is a practical bonus: by rotating it you can easily adjust the composition of your shot without rearranging the entire setup. Standard accessories in the 1.25″ to 2″ range connect directly.

Direct SC thread connection - fits in minutes

The focuser connects directly to the standard SC (Schmidt-Cassegrain) thread, so it can be mounted on any SC telescope - Celestron, Meade, Sky-Watcher and others - without any adapters. The entire installation takes just a few minutes. The focuser is part of the Pro series and features a black anodized construction.

Technical specifications

About the Omegon brand

Omegon is a brand created by astronomers for astronomers - with a focus on practicality, build quality, and the real needs of those who observe and photograph the night sky. Pro series products are designed to withstand the demanding conditions of summer nights and winter frosts, and to perform reliably year after year. Omegon offers a wide range of astronomy accessories - from eyepieces and focusers to mounts and complete telescopes - so you can build your entire observing setup from one manufacturer with confidence in compatibility and consistent quality.