Baader Planetarium 14 mm Hyperion Fine Tuning Ring - Black

• Focal length fine-tuning for Hyperion eyepieces (all focal lengths)
• Up to 40% shorter focal length.
• Spacer rings fit between the negative lens and the 2" lens mount so that the respective eyepiece focal lengths meet your needs.
• A 13 mm eyepiece can be converted into, for example, a 9 or 11 mm eyepiece without any loss in quality.
• Baader Planetarium Hyperion Fine Tuning Ring 14mm

Product Description Hyperion 14mm fine tuning ring (2" extension, M48 female / M48 male, 14 mm optical path). Focal length fine tuning for Hyperion eyepieces. Up to 40% reduction in focal length. Spacer rings between the negative lens and the 2" barrel to adjust the respective eyepiece focal length to suit your requirements. Turn the 13mm eyepiece into a 9 or 11mm eyepiece for example, without loss of quality. The fine tuning rings can also be combined! Box Contains Baader Planetarium Hyperion Fine Tuning Ring 14mm