Omegon Crayford Focuser 2 inch Newton Dual Speed 1:10

Omegon Crayford-Focuser 2 inch Newton Dual Speed 1:10: precisely focus with 1:10 fine adjustment

The standard focus mechanism on a Newton is often the weakest part of the telescope. It is sluggish, has play, and shifts under the weight of a heavy camera. This Omegon Crayford focus mechanism replaces that mechanism with a ball-bearing system that moves smoothly and without play.

The dual-speed gearing is the difference you notice immediately: with the large button you set the focus coarsely, with the small button ten times more precisely. At high magnification and when shooting astrophotography, that is exactly what you need to hit the focus point exactly.

Bullet-proof Crayford design

A Crayford focus lens works without a cam. The pull tube rests on ball bearings and is driven by a smooth shaft. This eliminates any play and ensures no jerky movement.

You set the friction yourself. If you use a heavier camera, you can tighten the clamp a little so that nothing falls out.

Fine adjustment of 1:10

The reduction of 1:10 means that ten turns of the fine knob are equivalent to a single turn of the coarse knob. Each touch therefore results in a slight displacement.

The focusing distance is 33 mm. That is more than enough for eyepieces, cameras, and extenders on a Newton.

Connections for visual and photographic work

The ocular side accepts both 2-inch and 1.25-inch accessories. On the camera side there is a T2 thread (M42 x 0.75) and an M54 thread, so you can connect a camera directly and without vibrations.

The telescope connection measures 78 mm. That is the standard screw spacing for many Newton tubes, including the Omegon Advanced series.

Included

• Crayford focus with 1:10 dual speed
• T2 adapter (M42 x 0.75)
• 2 inch to 1.25 inch transition ring
• Accessory ring clamp

Featured accessories

A laser collimator is the first addition to every Newton: after installing a new focuser, the optics must be aligned again. For the finest focusing in planet photography, combine this focuser with a 2-inch helicoidal microfocuser.

For whom yes and for whom no

• ✓ Newton owners who want to replace their standard focus ring
• ✓ Astrophotographers who are looking for stable focus under camera weight
• ✓ Observers who often work with high magnification
• ✗ Telescopes with a different bolt spacing than 78 mm
• ✗ Camera setups heavier than 1.5 kg
• ✗ Who doesn't want to use tools: assembly requires care and a collimation ring

Specifications

You can find more focusers and parts for this brand on the Omegon brand page.