Duclos 1.7x Expander

A brand new array of optics designed from the ground up, the Duclos 1.7x Expander effectively increases the image circle of the taking lens, providing a narrower field of view while maintaining the highest level of image quality. The Duclos 1.7x Expander features an integrated back focus adjustment for quick, easy field tuning. No need for shimming. Designed and manufactured with high grade, anodized aluminum body and stainless steel PL mounts, the Duclos 1.7x Expander excels at maintaining resolution throughout the field.