Omegon Step-Down Ring 109 mm to 78 mm

Omegon Step-Down Ring 109 mm to 78 mm: large tube opening, standard focus ring

Some Newton tubes have a focal opening with a 109 mm ring clamp, while the Omegon focusers connect to 78 mm. This ring bridges that difference in a single part: 109 mm on the tube side, 78 mm on the focus side.

The free passage of 75 mm remains ample, so that the beam of fast Newtons is not squeezed. The optical length of 2 mm is negligible.

Features

• Tube-side ring clamp 109 mm
• Focusing side 78 mm
• Free passage 75 mm
• Optical length 2 mm
• Anodized aluminum

Compatibility

For Newton tubes with 109 mm ring clamp and focal lengths with 78 mm connection.

Specifications

You can find more adapters for this brand on the Omegon brand page.