M68 EXTENSION RING 5mm Saxon Communication ports

Communication ports

If you need to compensate the small misalignment in the imaging train

Deep Sky Tour function that suggests a list of the most interesting deep sky objects currently visible

Photographically

Connection lens side Canon EF (bayonet)

M68 EXTENSION RING 5mm Saxon Communication portsThis 5mm extension ring is often used for professional field flatteners such as the SharpStar 2. 5" field flattener. The extension ring has an M68 x 1 male thread on one side and an M68 x 1 female thread on the other side. The total thickness is 9mm which includes the 4mm male thread. Specifications Connection (side a) M68 x 1 male Connection (side b) M68 x 1 female Optical thickness 5 mm (not including 4 mm male thread) Clear aperture 63 mm SKU